Semiconductor device

A semiconductor device A1 includes a substrate 3, a conductive section 5 formed on the substrate 3 and including a conductive material, a lead 1A located on the substrate 3, a semiconductor chip 4A located on the lead 1A, a control chip 4G located on the substrate 3 and electrically connected to the conductive section 5 and the semiconductor chip 4A for controlling an operation of the semiconductor chip 4A, and a resin 7 covering the semiconductor chip 4A, the control chip 4G, at least a part of the substrate 3 and a part of the lead 1A. This configuration contributes to achieving a higher level of integration of the semiconductor device.

TECHNICAL FIELD

The present disclosure relates to a semiconductor device.

BACKGROUND ART

As conventionally known, a semiconductor device may include a semiconductor chip, a control chip in which a control current for controlling an operation current of the semiconductor chip passes, and a resin member encapsulating the semiconductor chip and the control chip (see Patent Literature 1).

CITATION LIST

Patent Literature

SUMMARY

Technical Problem

A plurality of types of control signals are inputted to and outputted from the control chip. It is necessary to increase the number of conduction paths to the control chip in order to cope with an increase in number of control signals. However, employing a plurality of metal leads to constitute the conduction paths as is conventionally done may make it difficult to achieve a higher level of integration for the semiconductor device.

The present disclosure has been presented under the foregoing situation and provides semiconductor devices capable of achieving a higher level of integration.

Solution to Problem

In an aspect, the present disclosure provides a semiconductor device including: a substrate; a conductive section formed on the substrate and including a conductive material; a first lead located on the substrate and more heat-dissipative than the substrate; a semiconductor chip located on the first lead; a control chip that controls an operation of the semiconductor chip, where the chip is electrically connected to the conductive section and the semiconductor chip, and located on the substrate so as to be spaced apart from the semiconductor chip and the first lead in a plan view; and a resin covering the semiconductor chip, the control chip, at least a part of the substrate and a part of the lead.

Advantageous Effects of Invention

The present disclosure provides a semiconductor device that enables a higher level of integration to be realized, without compromising heat dissipation characteristics.

Other features and advantages of the present disclosure will become more apparent through the detailed description, given hereunder with reference to the accompanying drawings.

MODE FOR CARRYING OUT INVENTION

The terms “first”, “second”, “third” and so forth used in the present disclosure merely serve as a label, and are not intended to specify any order with respect to the objects accompanied by these terms.

First Embodiment

FIG. 1toFIG. 19illustrate a semiconductor device according to a first embodiment of the present disclosure. The semiconductor device A1according to this embodiment includes a plurality of leads1, a plurality of leads2, a substrate3, a plurality of semiconductor chips4, a plurality of control chips4, a plurality of diodes49, a conductive section5, a plurality of bonding sections6, a plurality of first wires91, a plurality of second wires92, and an encapsulating resin7. The semiconductor device A1is applicable, for example, to a driver circuit that drives a compressor of an outdoor unit of an air-conditioning apparatus, or a driver circuit that drives a compressor of a refrigerator, or a driver circuit that drives a fan. These driver circuits may be configured to drive a three-phase AC motor, for example.

FIG. 1is a perspective view showing the semiconductor device A1.FIG. 2is a plan view showing the semiconductor device A1.FIG. 3is a bottom view showing the semiconductor device A1.FIG. 4is a partial plan view of the semiconductor device A1.FIG. 5is a cross-sectional view taken along a line V-V inFIG. 4.FIG. 6is an enlarged partial cross-sectional view of the semiconductor device A1.FIG. 7is an enlarged partial cross-sectional view of the semiconductor device A1.FIG. 8is an enlarged partial cross-sectional view of the semiconductor device A1.FIG. 9is a cross-sectional view taken along a line IX-IX inFIG. 4.FIG. 10is an enlarged partial plan view of the semiconductor device A1.FIG. 14is an enlarged partial plan view of the semiconductor device A1.FIG. 15is an enlarged partial plan view of the semiconductor device A1.FIG. 16is an enlarged partial plan view of a substrate of the semiconductor device A1.FIG. 17is an enlarged partial cross-sectional view of the semiconductor device A1.FIG. 18is a schematic circuit diagram showing an electrical configuration of the semiconductor device A1.FIG. 19is a circuit diagram showing a part of the circuit configuration of the semiconductor device A1.

In the mentioned drawings, a z-direction corresponds to a thickness direction of the substrate3. An x-direction, which is orthogonal to the z-direction, corresponds to the first direction in the present disclosure. A y-direction is orthogonal to both of the z-direction and the x-direction.

The material of the substrate3is not specifically limited. It is preferable that the material of the substrate3has higher thermal conductivity, for example than the material of the resin7. Examples of the material of the substrate3include ceramics such as alumina (Al2O3), silicon nitride (SiN), aluminum nitride (AlN), and zirconia-containing alumina. The thickness of the substrate3is not specifically limited, but may be, for example, approximately 0.1 mm to 1.0 mm.

The shape of the substrate3is not specifically limited. In this embodiment, as shown inFIG. 4toFIG. 9, the substrate3includes a first face31, a second face32, a third face33, a fourth face34, a fifth face35, and a sixth face36. The first face31is oriented in the z-direction. The second face32is oriented to the opposite side of the first face31, in the z-direction. The third face33is located between the first face and the second face32in the z-direction and, in the illustrated example, connected to the first face31and the second face32. The third face33is oriented in the x-direction. The fourth face34is located between the first face and the second face32in the z-direction and, in the illustrated example, connected to the first face31and the second face32. The fourth face34is oriented to the opposite side of the third face33, in the x-direction. The fifth face35is located between the first face31and the second face32in the z-direction and, in the illustrated example, connected to the first face31and the second face32, The fifth face35is oriented in the y-direction. The sixth face36is located between the first face31and the second face32in the z-direction and, in the illustrated example, connected to the first face31and the second face32. The sixth face36is oriented to the opposite side of the fifth face35, in the y-direction. In the illustrated example, the substrate3has a rectangular shape as viewed in the z-direction. The substrate3has an elongate rectangular shape, having the long sides extending along the x-direction, as viewed in the z-direction.

The conductive section5is formed on the substrate3. In this embodiment, the conductive section5is formed on the first face31of the substrate3. The conductive section5is formed of a conductive material. The conductive material to form the conductive section5is not specifically limited. Examples of the conductive material to form the conductive section5include materials containing silver (Ag), copper (Cu), or gold (Au). In the subsequent description, it will be assumed that the conductive section5contains silver. However, the conductive section5may contain copper instead of silver, or gold instead of silver or copper. Alternatively, the conductive section5may contain Ag—Pt or Ag—Pd. The forming method of the conductive section5is not limited. For example, the conductive section5may be formed by sintering a paste containing the mentioned metal. The thickness of the conductive section5is not specifically limited, but may be, for example, approximately 5 μm to 30 μm.

The shape of the conductive section5is not specifically limited. In this embodiment, for example as shown inFIG. 16, the conductive section5includes wirings50A to50P, a first base portion55, a second base portion56, and a connecting portion57, each of which will be described hereunder.

The shape of the first base portion55is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first base portion55has a rectangular shape. In the illustrated example, the first base portion55has an elongate rectangular shape, having the long sides extending along the x-direction.

The shape of the second base portion56is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second base portion56has a rectangular shape. In the illustrated example, the second base portion56has an elongate rectangular shape, having the long sides extending along the x-direction.

The second base portion56is located on the side of the fourth face34with respect to the first base portion55, in the x-direction. In the illustrated example, the edge of the second base portion56on the side of the sixth face36in the y-direction is located generally at the same position as the edge of the first base portion55on the side of the sixth face36, in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located exactly at the same position, or being deviated by within ±5% of the characteristic size (size of the first base portion55or second base portion56in the y-direction). In the illustrated example, the edge of the second base portion56on the side of the fifth face35in the y-direction is located on the side of the sixth face36, with respect to the edge of the first base portion55on the side of the fifth face35. In the illustrated example, the center of the second base portion56in the y-direction is located on the side of the sixth face36, with respect to the center of the first base portion55in the y-direction.

The connecting portion57is interposed between the first base portion55and the second base portion56and, in the illustrated example, connecting the first base portion55and the second base portion56. In the illustrated example, the connecting portion57is located between the first base portion55and the second base portion56, as viewed in the y-direction. The shape of the connecting portion57is not specifically limited. In the illustrated example, the connecting portion57includes a first portion571, a second portion572, and a third portion573, each of which will be described hereunder.

The first portion571is located between the first base portion55and the second base portion56, as viewed in the y-direction. The shape of the first portion571is not specifically limited. In the illustrated example, the first portion571has a strip shape extending along the x-direction. In the illustrated example, the size of the first portion571in the y-direction is constant.

The second portion572is interposed between the first portion571and the first base portion55and, in the illustrated example, connected to the first portion571and the first base portion55. The second portion572is larger in size in the y-direction, than the first portion571. The shape of the second portion572is not specifically limited. In the illustrated example, the second portion572includes a fourth portion572aand a fifth portion572b, each of which will be described hereunder. The fourth portion572ais a portion where the size in the y-direction increases in the direction from the first portion571toward the first base portion55. In the fifth portion572b, the size in the y-direction is constant. The fifth portion572bis larger in size in the x-direction, than the fourth portion572a.

The third portion573is interposed between the first portion571and the second base portion56and, in the illustrated example, connected to the first portion571and the second base portion56. The third portion573is larger in size in the y-direction, than the first portion571. The shape of the third portion573is not specifically limited. In the illustrated example, the size of the third portion573in the y-direction increases in the direction from the first portion571toward the second base portion56.

In the illustrated example, the respective edges of the first base portion55, the second base portion56, and the connecting portion57on the side of the sixth face36in the y-direction are located generally at the same position in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located exactly at the same position, or being deviated by within ±5% of the characteristic size (size of the first base portion55or second base portion56in the y-direction).

The wiring50A includes a first portion51A, a second portion52A, and a third portion53A, each of which will be described hereunder.

The shape of the first portion51A is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51A has a rectangular shape. In this embodiment, the first portion51A is located on the side of the third face33in the x-direction with respect to the first base portion55, and spaced therefrom. In the illustrated example, in addition, the first portion51A partially overlaps with the first base portion55, as viewed in the x-direction. The center of the first portion51A in the y-direction is located on the side of the fifth face35, with respect to the first base portion55.

The second portion52A is located on the side of the fifth face35with respect to the first portion51A, in the y-direction. The shape of the second portion52A is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51A has a rectangular shape. In the illustrated example, an end portion of the second portion52A in the x-direction includes a portion extending toward the third face33in the x-direction, with respect to the first portion51A. An end portion of the first portion51A in the x-direction includes a portion extending toward the fourth face34in the x-direction, with respect to the second portion52A.

The third portion53A is interposed between the first portion51A and the second portion52A and, in the illustrated example, connected to the first portion51A and the second portion52A. The shape of the third portion53A is not specifically limited. In the illustrated example, the third portion53A has a rectangular shape. In the illustrated example, the edge of the third portion53A on the side of the fourth face34in the x-direction is linearly connected to the edge of the second portion52A on the side of the fourth face34. The edge of the third portion53A on the side of the third face33in the x-direction is linearly connected to the edge of the first portion51A on the side of the third face33. In the illustrated example, the second portion52A and the third portion53A are located on the side of the third face33in the x-direction, with respect to the center of the first portion51A in the x-direction.

The wiring50B includes a first portion51B, a second portion52B, and a third portion53B, each of which will be described hereunder.

The shape of the first portion51B is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion518has a rectangular shape. In this embodiment, the first portion51B is located on the side of the fifth face35in the y-direction with respect to the first base portion55, and spaced therefrom. In addition, the first portion51B is located on the side of the fourth face34in the x-direction with respect to the first portion51A, and spaced therefrom. In the illustrated example, the first portion51B at least partially overlaps with the first portion51A, as viewed in the x-direction, and generally the entirety of the first portion51B overlaps with the first portion51A. Here, the expression “generally the entirety overlaps” refers to completely overlapping in its entirety, or being deviated by within 5% from each other. In the illustrated example, the center the first portion51B in the y-direction is located on the side of the fifth face35, with respect to the center of the first portion51A in the y-direction. In the illustrated example, an end portion of the first portion51B in the x-direction includes a portion extending toward the third face33in the x-direction, with respect to the first base portion55. In the illustrated example, the center of the first portion51B in the x-direction overlaps with the first base portion55, as viewed in the y-direction.

The second portion52B is located on the side of the fifth face35with respect to the first portion51B, in the y-direction. In addition, the second portion52B is located on the side of the fourth face34in the x-direction with respect to the second portion52A, and spaced therefrom by a clearance G51. The shape of the second portion52B is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52B has a rectangular shape. In the illustrated example, in addition, generally the entirety of the second portion52B overlaps with the first portion51B, as viewed in the y-direction. Here, the expression “generally the entirety overlaps” refers to completely overlapping in its entirety, or being deviated by within 5% from each other. In the illustrated example, the second portion52B generally coincides with the second portion52A, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52A or second portion52B in the y-direction). In the illustrated example, the second portion52B is shifted toward the third face33, from the center of the first portion51B in the x-direction.

The third portion53B is interposed between the first portion51B and the second portion52B and, in the illustrated example, connected to the first portion51B and the second portion52B. The shape of the third portion53B is not specifically limited. In the illustrated example, the third portion53B has a rectangular shape. In the illustrated example, the third portion53B generally coincides with the second portion52B, as viewed in the y-direction. Here, the expression “generally coincides” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52B or third portion53B in the x-direction). In the illustrated example, the third portion53B is shifted toward the third face33, from the center of the first portion51B in the x-direction.

The wiring50C includes a first portion51C, a second portion52C, and a third portion53C, each of which will be described hereunder.

The shape of the first portion51C is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51C has a rectangular shape. In this embodiment, the first portion51C is located on the side of the fifth face35in the y-direction with respect to the first base portion55, and spaced therefrom. In addition, the first portion51C is located on the side of the fourth face34in the x-direction with respect to the first portion51A, and spaced therefrom. In the illustrated example, the first portion51C generally coincides with the first portion51B, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion51B or first portion51C in the y-direction). In the illustrated example, the center the first portion51C in the y-direction is located on the side of the fifth face35, with respect to the center of the first portion51A in the y-direction. In the illustrated example, the first portion51C is shifted toward the fourth face34, from the center of the first base portion55in the x-direction. In the illustrated example, the center of the first portion51C in the x-direction overlaps with the first base portion55, as viewed in the y-direction.

The second portion52C is located on the side of the fifth face35with respect to the first portion51C, in the y-direction. In addition, the second portion52C is located on the side of the fourth face34in the x-direction with respect to the second portion52B, and spaced therefrom by a clearance G52. In the illustrated example, the clearance G52is wider than the clearance G51. The shape of the second portion52C is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52C has a rectangular shape. In the illustrated example, in addition, generally the entirety of the second portion52C overlaps with the first portion51C, as viewed in the y-direction. Here, the expression “generally the entirety overlaps” refers to completely overlapping in its entirety, or being deviated by within 5% from each other. In the illustrated example, the second portion52C generally coincides with the second portion52B, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52B or second portion52C in the y-direction). In the illustrated example, the second portion52C is shifted toward the fourth face34, from the center of the first portion51C in the x-direction.

The third portion53C is interposed between the first portion51C and the second portion52C and, in the illustrated example, connected to the first portion51C and the second portion52C. The shape of the third portion53C is not specifically limited. In the illustrated example, the third portion53C has a rectangular shape. In the illustrated example, the third portion53C generally coincides with the second portion52C, as viewed in the y-direction. Here, the expression “generally coincides” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52C and the third portion53C in the x-direction). In the illustrated example, the third portion53C generally coincides with the third portion53B, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion53B and the third portion53C in the y-direction). In the illustrated example, the third portion53C is shifted toward the fourth face34, from the center of the first portion51C in the x-direction.

The wiring50D includes a first portion51D, a second portion52D, a third portion53D, a fourth portion54D, and a fifth portion55D, each of which will be described hereunder.

The first portion51D is located on the side of the fifth face35in the y-direction with respect to the first base portion55, and spaced therefrom. The shape of the first portion51C is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51C has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion51D overlaps with the first base portion55, as viewed in the y-direction. The edge of the first portion51D on the side of the fourth face34in the x-direction generally coincides with the edge of the first base portion55on the side of the fourth face34, as viewed in the y-direction. Here, the expression “generally coincides” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion51D and the first base portion55in the x-direction). The first portion51D is smaller in size in the y-direction, than the first portion51C.

The second portion52D is located on the side of the fifth face35with respect to the first portion51D, in the y-direction. In addition, the second portion52D is located on the side of the fourth face34with respect to the first portion51D, in the x-direction. The second portion52D is located on the side of the fourth face34in the x-direction with respect to the second portion52C, and spaced therefrom by a clearance G53. The clearance G53is generally the same in size as the clearance G52(exactly the same, or different by within ±5%). The shape of the second portion52D is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52D has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the second portion52D is spaced apart from the first portion51D, as viewed in the y-direction. In the illustrated example, the second portion52D generally coincides with the second portion52C, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52C or second portion52D in the y-direction).

The third portion53D is interposed between the first portion51D and the second portion52D and, in the illustrated example, connected to the edge of the first portion51D on the side of the fourth face34in the x-direction. The shape of the third portion53D is not specifically limited. In the illustrated example, the third portion53D has a strip shape extending along the x-direction. The third portion53D is spaced apart from the second portion52D, as viewed in the y-direction.

The fourth portion54D is interposed between the first portion51D and the second portion52D and, in the illustrated example, connected to the edge of the second portion52D on the side of the sixth face36in the y-direction. The shape of the fourth portion54D is not specifically limited. In the illustrated example, the fourth portion54D has a strip shape extending along the y-direction. The fourth portion54D is spaced apart from the first portion51D, as viewed in the x-direction.

The fifth portion55D is interposed between the third portion53D and the fourth portion54D and, in the illustrated example, connected to the third portion53D and the fourth portion54D. The shape of the fifth portion55D is not specifically limited. In the illustrated example, the fifth portion55D has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50E includes a first portion51E, a second portion52E, a third portion53E, a fourth portion54E, and a fifth portion55E, each of which will be described hereunder.

The first portion51E is spaced apart from the first base portion55toward the fifth face35in the y-direction, and toward the fourth face34in the x-direction. In addition, the first portion51E is located on the side of the fourth face34in the x-direction with respect to the first portion51D, and spaced therefrom. The shape of the first portion51E is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51E has an elongate rectangular shape, having the long sides extending along the x-direction. In the illustrated example, first portion51E is spaced apart from the first base portion55, as viewed in the y-direction. In the illustrated example, the first portion51D overlaps with the first base portion55, as viewed in the y-direction. The first portion51E overlaps with the first portion51D, as viewed in the x-direction. Further, the first portion51E overlaps with the second portion52D, as viewed in the y-direction.

The second portion52E is located on the side of the fifth face35with respect to the first portion51E, in the y-direction. In addition, the second portion52E is located on the side of the fourth face34with respect to the first portion51E, in the x-direction. The second portion52E is located on the side of the fourth face34in the x-direction with respect to the second portion52D, and spaced therefrom by a clearance G54. The clearance G54is narrower than the clearance G53. Here, a difference in size of the clearance G54, referred to in relation to the wirings50E to50N, is within ±5%. The shape of the second portion52E is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52E has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the second portion52E is spaced apart from the first portion51E, as viewed in the y-direction. In the illustrated example, the second portion52E generally coincides with the second portion52D, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52D or second portion52E in the y-direction).

The third portion53E is interposed between the first portion51E and the second portion52E and, in the illustrated example, connected to the edge of the first portion51E on the side of the fourth face34in the x-direction. The shape of the third portion53E is not specifically limited. In the illustrated example, the third portion53E has a strip shape extending along the x-direction. The third portion53E is spaced apart from the second portion52E, as viewed in the y-direction.

The fourth portion54E is interposed between the first portion51E and the second portion52E and, in the illustrated example, connected to the edge of the second portion52E on the side of the sixth face35in the y-direction. The shape of the fourth portion54E is not specifically limited. In the illustrated example, the fourth portion54E has a strip shape extending along the y-direction. The fourth portion54E is spaced apart from the first portion51E, as viewed in the x-direction.

The fifth portion55E is interposed between the third portion53E and the fourth portion54E and, in the illustrated example, connected to the third portion53E and the fourth portion54E. The shape of the fifth portion55E is not specifically limited. In the illustrated example, the fifth portion55E has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50F includes a first portion51F, a second portion52F, a third portion53F, a fourth portion54F, and a fifth portion55F, each of which will be described hereunder.

The first portion51F is located on the side of the fourth face34in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51F overlaps with the first base portion55, as viewed in the x-direction. The shape of the first portion51F is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51F has an elongate rectangular shape, having the long sides extending along the x-direction. In addition, the first portion51F generally coincides with the first portion51E, as viewed in the y-direction. Here, the expression “generally coincides” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion51E or first portion51F in the y-direction).

The second portion52F is located on the side of the fifth face35with respect to the first portion51F, in the y-direction. In addition, the second portion52F is located on the side of the fourth face34with respect to the first portion51F, in the x-direction. The second portion52F is located on the side of the fourth face34in the x-direction with respect to the second portion52E, and spaced therefrom by the clearance G54. The shape of the second portion52F is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52F has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the second portion52F is spaced apart from the first portion51F, as viewed in the y-direction. In the illustrated example, the second portion52F generally coincides with the second portion52E, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52E or second portion52F in the y-direction).

The third portion53F is interposed between the first portion51F and the second portion52F and, in the illustrated example, connected to the edge of the first portion51F on the side of the fourth face34in the x-direction. The shape of the third portion53F is not specifically limited. In the illustrated example, the third portion53F has a strip shape extending along the x-direction. The third portion53F is spaced apart from the second portion52F, as viewed in the y-direction. The third portion53F is larger in size in the x-direction, than the third portion53E.

The fourth portion54F is interposed between the first portion51F and the second portion52F and, in the illustrated example, connected to the edge of the second portion52F on the side of the sixth face36in the y-direction. The shape of the fourth portion54F is not specifically limited. In the illustrated example, the fourth portion54F has a strip shape extending along the y-direction. The fourth portion54F is spaced apart from the first portion51F, as viewed in the x-direction. The fourth portion54F is larger in size in the y-direction, than the fourth portion54E.

The fifth portion55F is interposed between the third portion53F and the fourth portion54F and, in the illustrated example, connected to the third portion53F and the fourth portion54F. The shape of the fifth portion55F is not specifically limited. In the illustrated example, the fifth portion55F has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50G includes a first portion51G, a second portion52G, a third portion53G, a fourth portion54G, and a fifth portion55G, each of which will be described hereunder.

The first portion51G is located on the side of the fourth face34in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51G overlaps with the first base portion55, as viewed in the x-direction. The shape of the first portion51G is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51G has an elongate rectangular shape, having the long sides extending along the x-direction. In addition, the first portion51G generally coincides with the first portion51F, as viewed in the y-direction. Here, the expression “generally coincides” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion51F or first portion51G in the x-direction). The first portion51G overlaps with the fifth portion572b, as viewed in the y-direction.

The second portion52G is located on the side of the fifth face35with respect to the first portion51G, in the y-direction. In addition, the second portion52G is located on the side of the fourth face34with respect to the first portion51G, in the x-direction. The second portion52G is located on the side of the fourth face34in the x-direction with respect to the second portion52F, and spaced therefrom by the clearance G54. The shape of the second portion52G is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52G has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the second portion52G is spaced apart from the first portion51G, as viewed in the y-direction. In the illustrated example, the second portion52G generally coincides with the second portion52F, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52F or second portion52G in the y-direction).

The third portion53G is interposed between the first portion51G and the second portion52G and, in the illustrated example, connected to the edge of the first portion51G on the side of the fourth face34in the x-direction. The shape of the third portion53G is not specifically limited. In the illustrated example, the third portion53G has a strip shape extending along the x-direction. The third portion53G is spaced apart from the second portion52G, as viewed in the y-direction. The third portion53G is larger in size in the x-direction, than the third portion53F.

The fourth portion54G is interposed between the first portion51G and the second portion52G and, in the illustrated example, connected to the edge of the second portion52G on the side of the sixth face36in the y-direction. The shape of the fourth portion54G is not specifically limited. In the illustrated example, the fourth portion54G has a strip shape extending along the y-direction. The fourth portion54G is spaced apart from the first portion51G, as viewed in the x-direction. The fourth portion54G is larger in size in the y-direction, than the fourth portion54F.

The fifth portion55G is interposed between the third portion53G and the fourth portion54G and, in the illustrated example, connected to the third portion53G and the fourth portion54G. The shape of the fifth portion55G is not specifically limited. In the illustrated example, the fifth portion55G has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50H includes a second portion52H and a fourth portion54H, each of which will be described hereunder.

The second portion52H is located on the side of the fifth face35with respect to the second base portion56, in the y-direction. The second portion52H is located on the side of the fourth face34in the x-direction with respect to the second portion52G, and spaced therefrom by the clearance G54. The shape of the second portion52H is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52H has an elongate rectangular shape, having the long sides extending along the y-direction. In addition, the second portion52H overlaps with the second base portion56, as viewed in the y-direction. In the illustrated example, the second portion52H generally coincides with the second portion52G, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52G or second portion52H in the y-direction).

The fourth portion54H is interposed between the second base portion56and the second portion52H and, in the illustrated example, connected to the second base portion56and the second portion52H. The fourth portion54H is connected to the edge of the second base portion56on the side of the fifth face35in the y-direction, and the edge of the second portion52H on the side of the sixth face36in the y-direction. The shape of the fourth portion54H is not specifically limited. In the illustrated example, the fourth portion54H has a strip shape extending along the y-direction.

The wiring50I includes a first portion51I, a second portion52I, a third portion53I, a fourth portion54I, and a fifth portion55I, each of which will be described hereunder.

The first portion51I is located on the side of the fifth face35in the y-direction with respect to the second base portion56, and spaced therefrom. The shape of the first portion51I is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51I has an elongate rectangular shape, having the long sides extending along the x-direction. In the illustrated example, the first portion51I overlaps with the second base portion56, as viewed in the y-direction. In addition, the first portion51I is spaced apart from the second portion52H, as viewed in the y-direction.

The second portion52I is located on the side of the fifth face35with respect to the first portion51I, in the y-direction. In addition, the second portion52I is located on the side of the fourth face34in the x-direction with respect to the second portion52H, and spaced therefrom by the clearance G54. The shape of the second portion52I is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52I has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the second portion52I is spaced apart from the first portion51I, as viewed in the y-direction. In addition, generally the entirety of the second portion52I overlaps with the second base portion56, as viewed in the y-direction. Here, the expression “generally the entirety overlaps” refers to completely overlapping in its entirety, or being deviated by within 5% from each other. In the illustrated example, the second portion52I generally coincides with the second portion52H, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52H or second portion52I in the y-direction).

The third portion53I is interposed between the first portion51I and the second portion52I and, in the illustrated example, connected to the edge of the first portion51I on the side of the fifth face35in the y-direction. The shape of the third portion53I is not specifically limited. In the illustrated example, the third portion53I has a strip shape extending along the y-direction.

The fourth portion54I is interposed between the first portion51I and the second portion52I and, in the illustrated example, connected to the edge of the second portion52I on the side of the sixth face36in the y-direction. The shape of the fourth portion54I is not specifically limited. In the illustrated example, the fourth portion54I has a strip shape extending along the y-direction.

The fifth portion55I is interposed between the third portion53I and the fourth portion54I and, in the illustrated example, connected to the third portion53I and the fourth portion54I. The shape of the fifth portion55I is not specifically limited. In the illustrated example, the fifth portion55I has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50J includes a first portion51J, a second portion52J, a third portion53J, a fourth portion54J, and a fifth portion55J, each of which will be described hereunder.

The first portion51J is located on the side of the fourth face34in the x-direction with respect to the first portion51I, and spaced therefrom by a clearance G55. In the illustrated example, the clearance G55is narrower than the clearance G54. The first portion51J is located on the side of the fifth face35in the y-direction with respect to the second base portion56, and spaced therefrom. The shape of the first portion51J is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51J has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion51J overlaps with the second base portion56, as viewed in the y-direction. In addition, the first portion51J overlaps with the second portion52I, as viewed in the y-direction. In the illustrated example, the first portion51J generally coincides with the first portion51I, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion51I or first portion51J in the y-direction).

The second portion52J is located on the side of the fifth face35with respect to the first portion51J, in the y-direction. In addition, the second portion52J is located on the side of the fourth face34in the x-direction with respect to the second portion52I, and spaced therefrom by the clearance G54. The shape of the second portion52J is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52J has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the second portion52J is spaced apart from the first portion51J, as viewed in the y-direction. In addition, generally the entirety of the second portion52J overlaps with the second base portion56, as viewed in the y-direction. Here, the expression “generally the entirety overlaps” refers to completely overlapping in its entirety, or being deviated by within 5% from each other. In the illustrated example, the second portion52J generally coincides with the second portion52I, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion51I or second portion52J in the y-direction).

The third portion53J is interposed between the first portion51J and the second portion52J and, in the illustrated example, connected to the edge of the first portion51J on the side of the fifth face35in the y-direction. The shape of the third portion53J is not specifically limited. In the illustrated example, the third portion53J has a strip shape extending along the y-direction. The third portion53J is smaller in size in the y-direction, than the third portion53I.

The fourth portion54J is interposed between the first portion51J and the second portion52J and, in the illustrated example, connected to the edge of the second portion52J on the side of the sixth face36in the y-direction. The shape of the fourth portion54J is not specifically limited. In the illustrated example, the fourth portion54J has a strip shape extending along the y-direction. The fourth portion54J is smaller in size in the y-direction, than the fourth portion54I.

The fifth portion55J is interposed between the third portion53J and the fourth portion54J and, in the illustrated example, connected to the third portion53J and the fourth portion54J. The shape of the fifth portion55J is not specifically limited. In the illustrated example, the fifth portion55J has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50K includes a first portion51K, a second portion52K, a third portion53K, a fourth portion54K, and a fifth portion55K, each of which will be described hereunder.

The first portion51K is located on the side of the fourth face34in the x-direction with respect to the first portion51J, and spaced therefrom by the clearance G55. The first portion51K is located on the side of the fifth face35in the y-direction with respect to the second base portion56, and spaced therefrom. The shape of the first portion51K is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51K has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion51K overlaps with the second base portion56, as viewed in the y-direction. In addition, the first portion51K overlaps with the second portion52J, as viewed in the y-direction. In the illustrated example, the first portion51K generally coincides with the first portion51J, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion51J or first portion51K in the y-direction).

The second portion52K is located on the side of the fifth face35with respect to the first portion51K, in the y-direction. In addition, the second portion52K is located on the side of the fourth face34in the x-direction with respect to the second portion52J, and spaced therefrom by the clearance G54. The shape of the second portion52K is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52K has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the second portion52K is spaced apart from the first portion51K, as viewed in the y-direction. In addition, generally the entirety of the second portion52K overlaps with the second base portion56, as viewed in the y-direction. Here, the expression “generally the entirety overlaps” refers to completely overlapping in its entirety, or being deviated by within 5% from each other. In the illustrated example, the second portion52K generally coincides with the second portion52J, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52J or second portion52K in the y-direction).

The third portion53K is interposed between the first portion51K and the second portion52K and, in the illustrated example, connected to the edge of the first portion51K on the side of the fifth face35in the y-direction. The shape of the third portion53K is not specifically limited. In the illustrated example, the third portion53K has a strip shape extending along the y-direction. The third portion53K is smaller in size in the y-direction, than the third portion53J.

The fourth portion54K is interposed between the first portion51K and the second portion52K and, in the illustrated example, connected to the edge of the second portion52K on the side of the sixth face36in the y-direction. The shape of the fourth portion54K is not specifically limited. In the illustrated example, the fourth portion54K has a strip shape extending along the y-direction. The fourth portion54K is smaller in size in the y-direction, than the fourth portion54J.

The fifth portion55K is interposed between the third portion53K and the fourth portion54K and, in the illustrated example, connected to the third portion53K and the fourth portion54K. The shape of the fifth portion55K is not specifically limited. In the illustrated example, the fifth portion55K has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50L includes a first portion51L, a second portion52L, a third portion53L, a fourth portion54L, and a fifth portion55L, each of which will be described hereunder.

The first portion51L is located on the side of the fourth face34in the x-direction with respect to the first portion51K, and spaced therefrom by the clearance G55. The first portion51L is located on the side of the fifth face35in the y-direction with respect to the second base portion56, and spaced therefrom. The shape of the first portion51L is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51L has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion51L overlaps with the second base portion56, as viewed in the y-direction. In addition, the first portion51L is located between the second portion52J and the second portion52K, as viewed in the y-direction. In the illustrated example, the first portion51L generally coincides with the first portion51K, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion51K or first portion51L in the y-direction).

The second portion52L is located on the side of the fifth face35with respect to the first portion51L, in the y-direction. In addition, the second portion52L is located on the side of the fourth face34in the x-direction with respect to the second portion52K, and spaced therefrom by the clearance G54. The shape of the second portion52L is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52L has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the second portion52L is spaced apart from the first portion51L, as viewed in the y-direction. In addition, the second portion52L is spaced apart from the second base portion56, as viewed in the y-direction. In the illustrated example, the second portion52L generally coincides with the second portion52K, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52K or second portion52L in the y-direction).

The third portion53L is interposed between the first portion51L and the second portion52L and, in the illustrated example, connected to the edge of the first portion51L on the side of the fifth face35in the y-direction. The shape of the third portion53L is not specifically limited. In the illustrated example, the third portion53L has a strip shape extending along the y-direction. The third portion53L is smaller in size in the y-direction, than the third portion53K.

The fourth portion54L is interposed between the first portion51L and the second portion52L and, in the illustrated example, connected to the edge of the second portion52L on the side of the sixth face36in the y-direction. The shape of the fourth portion54L is not specifically limited. In the illustrated example, the fourth portion54L has a strip shape extending along the y-direction. The fourth portion54L is smaller in size in the y-direction, than the fourth portion54K.

The fifth portion55L is interposed between the third portion53L and the fourth portion54L and, in the illustrated example, connected to the third portion53L and the fourth portion54L. The shape of the fifth portion55L is not specifically limited. In the illustrated example, the fifth portion55L has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50M includes a first portion51M, a second portion52M, a third portion53M, a fourth portion54M, and a fifth portion55M, each of which will be described hereunder.

The first portion51M is located on the side of the fourth face34in the x-direction with respect to the first portion51L, and spaced therefrom by the clearance G55. The first portion51M is located on the side of the fifth face35in the y-direction with respect to the second base portion56, and spaced therefrom. The shape of the first portion51M is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51M has a rectangular shape. In the illustrated example, the first portion51M overlaps with the second base portion56, as viewed in the y-direction. In addition, the first portion51M overlaps with the second portion52K, as viewed in the y-direction. In the illustrated example, the first portion51M generally coincides with the first portion51L, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion51L or first portion51M in the y-direction).

The second portion52M is located on the side of the fifth face35with respect to the first portion51M, in the y-direction. In addition, the second portion52M is located on the side of the fourth face34in the x-direction with respect to the second portion52L, and spaced therefrom by the clearance G54. The shape of the second portion52M is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52M has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the second portion52M is spaced apart from the first portion51M, as viewed in the y-direction. In addition, the second portion52M is spaced apart from the second base portion56, as viewed in the y-direction. In the illustrated example, the second portion52M generally coincides with the second portion52L, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52L or second portion52M in the y-direction).

The third portion53M is interposed between the first portion51M and the second portion52M and, in the illustrated example, connected to the edge of the first portion51M on the side of the fourth face34in the x-direction. The shape of the third portion53M is not specifically limited. In the illustrated example, the third portion53M has a strip shape extending along the x-direction.

The fourth portion54M is interposed between the first portion51M and the second portion52M and, in the illustrated example, connected to the edge of the second portion52M on the side of the sixth face36in the y-direction. The shape of the fourth portion54M is not specifically limited. In the illustrated example, the fourth portion54M has a strip shape extending along the y-direction. The fourth portion54M is larger in size in the y-direction, than the fourth portion54L.

The fifth portion55M is interposed between the third portion53M and the fourth portion54M and, in the illustrated example, connected to the third portion53M and the fourth portion54M. The shape of the fifth portion55M is not specifically limited. In the illustrated example, the fifth portion55M has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50N includes a first portion51N, a second portion52N, and a fifth portion55N, each of which will be described hereunder.

The first portion51N is located on the side of the fifth face35with respect to the second base portion56, in the y-direction. The shape of the first portion51N is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51N has a rectangular shape. In the illustrated example, the first portion51N is spaced apart from the second base portion56, as viewed in the y-direction. The first portion51N overlaps with the second portion52K, as viewed in the y-direction. Further, the first portion51N overlaps with the second base portion56and the first portion51M, as viewed in the x-direction.

The second portion52N is located on the side of the fifth face35with respect to the first portion51N, in the y-direction. In addition, the second portion52N is located on the side of the fourth face34in the x-direction with respect to the second portion52M, and spaced therefrom by the clearance G54. The shape of the second portion52N is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52N has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the second portion52N is spaced apart from the first portion51N, as viewed in the y-direction. In addition, the second portion52N is spaced apart from the second base portion56, as viewed in the y-direction. In the illustrated example, the second portion52N generally coincides with the second portion52M, as viewed in the x-direction. Here, the expression “generally coincides” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52M or second portion52N in the y-direction).

The fifth portion55N is interposed between the first portion51N and the second portion52N and, in the illustrated example, connected to the first portion51N and the second portion52N. The shape of the fifth portion55N is not specifically limited. In the illustrated example, the fifth portion55N has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50O includes a first portion51O, a second portion52O, a third portion53O, and a fifth portion55O, each of which will be described hereunder.

The first portion51O is located on the side of the fourth face34in the x-direction with respect to the second base portion56, and connected thereto. The shape of the first portion51O is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51O has an elongate rectangular shape, having the long sides extending along the x-direction. In the illustrated example, the first portion51O overlaps with the second base portion56, as viewed in the x-direction.

The second portion52O is located on the side of the fifth face35in the y-direction, and on the side of the fourth face34in the x-direction, with respect to the first portion51O. The second portion52O is located on the side of the sixth face36with respect to the second portion52N, in the y-direction. The shape of the second portion52O is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52O has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the second portion52O is spaced apart from the first portion51O and the first portion51M, as viewed in the y-direction. In addition, the second portion52O is spaced apart from the second base portion56, and overlaps with the second portion52N, as viewed in the y-direction.

The third portion53O is interposed between the first portion51O and the second portion52O and, in the illustrated example, connected to the edge of the first portion51O on the side of the fourth face34in the x-direction. The shape of the third portion53O is not specifically limited. In the illustrated example, the third portion53O has a strip shape extending along the x-direction.

The fifth portion55O is interposed between the first portion51O and the third portion53O and, in the illustrated example, connected to the first portion51O and the third portion53O. The shape of the fifth portion55O is not specifically limited. In the illustrated example, the fifth portion55O has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50P includes a first portion51P, a second portion52P, a third portion53P, and a fifth portion55P, each of which will be described hereunder.

The first portion51P is located on the side of the fourth face34in the x-direction with respect to the second base portion56, and spaced therefrom. The shape of the first portion51P is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51P has an elongate rectangular shape, having the long sides extending along the x-direction. In the illustrated example, the first portion51P overlaps with the second base portion56, as viewed in the x-direction. In addition, the first portion51P overlaps with the first portion51O, as viewed in the y-direction.

The second portion52P is located on the side of the fifth face35in the y-direction, and on the side of the fourth face34in the x-direction, with respect to the first portion51P. The second portion52P is located on the side of the sixth face36with respect to the second portion52O, in the y-direction. The shape of the second portion52P is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52P has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the second portion52P is spaced apart from the first portion51P and the second portion52M, as viewed in the y-direction. In addition, the second portion52P is spaced apart from the second base portion56, and overlaps with the second portion52N, as viewed in the y-direction. In the illustrated example, the second portion52P generally coincides with the second portion52O, as viewed in the y-direction. Here, the expression “generally coincides” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second portion52O or second portion52P in the x-direction).

The third portion53P is interposed between the first portion51P and the second portion52P and, in the illustrated example, connected to the edge of the first portion51P on the side of the fourth face34in the x-direction. The shape of the third portion53P is not specifically limited. In the illustrated example, the third portion53P has a strip shape extending along the x-direction.

The fifth portion55P is interposed between the first portion51P and the third portion53P and, in the illustrated example, connected to the first portion51P and the third portion53P. The shape of the fifth portion55P is not specifically limited. In the illustrated example, the fifth portion55P has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50A to the wiring50P are formed on a region in the substrate3, on the side of the fifth face35in the y-direction. The region on the side of the fifth face35will be defined as a second region30B.

The plurality of bonding sections6are formed on the substrate3. In this embodiment, the plurality of bonding sections6are formed on the first face31of the substrate3. The material of the bonding section6is not specifically limited, provided that the material is capable of bonding the substrate3and the lead1together. The bonding section6is formed of, for example, a conductive material. The conductive material to form the bonding section6is not specifically limited. Examples of the conductive material to form the bonding section6include materials containing silver (Ag), copper (Cu), or gold (Au). In the subsequent description, it will be assumed that the bonding section6contains silver. The bonding section6according to this embodiment contains the same conductive material as that employed to form the conductive section5. However, the bonding section6may contain copper instead of silver, or gold instead of silver or copper. Alternatively, the bonding section6may contain Ag—Pt or Ag—Pd. The forming method of the bonding section6is not limited. For example, the bonding section6may be formed, like the conductive section5, by sintering a paste containing the mentioned metal. The thickness of the bonding section6is not specifically limited, but may be, for example, approximately 5 μm to 30 μm.

In this embodiment, the plurality of bonding sections6include a bonding section6A to a bonding section6D.

The bonding section6A is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6A overlaps with the entirety of the first base portion55, as viewed in the y-direction. The shape of the bonding section6A is not specifically limited. In the illustrated example, the bonding section6A includes a first edge61A, a second edge62A, a third edge63A, a fourth edge64A, a fifth edge65Aa, a sixth edge66Aa, a seventh edge65Ab, and an eighth edge66Ab.

The first edge61A extends along the y-direction. In the illustrated example, the first edge61A overlaps with the first portion51A, as viewed in the y-direction.

The second edge62A is located on the opposite side of the first edge61A in the x-direction, across the center of the bonding section6A in the x-direction, and extends along the y-direction. In the illustrated example, the second edge62A overlaps with the first portion571of the connecting portion57, as viewed in the y-direction. The second edge62A is smaller in size in the y-direction, than the first edge61A.

The third edge63A is connected to the respective ends of the first edge61A and the second edge62A, on the side of the fifth face35in the y-direction. The third edge63A extends along the x-direction. The third edge63A is spaced apart from the first base portion55, in the y-direction. In the illustrated example, the third edge63A overlaps at least with the first portion51A, the first base portion55, and the first portion571, as viewed in the y-direction.

The fourth edge64A is located on the opposite side of the third edge63A in the y-direction, across the center of the bonding section6A in the y-direction. The fourth edge64A extends along the x-direction. The fourth edge64A is smaller in size in the x-direction, than the third edge63A. The entirety of the fourth edge64A overlaps with the third edge63A, as viewed in the y-direction.

The fifth edge65Aa is connected to the end of the first edge61A on the side of the sixth face36in the y-direction. In the illustrated example, the fifth edge65Aa is inclined with respect to the x-direction and the y-direction. The seventh edge65Ab is connected to the end of the second edge62A on the side of the sixth face36in the y-direction. In the illustrated example, the seventh edge65Ab is inclined with respect to the x-direction and the y-direction.

The sixth edge66Aa is connected to the end of the fifth edge65Aa on the side of the sixth face36in the y-direction, and the end of the fourth edge64A in the x-direction. In the illustrated example, the sixth edge66Aa extends along the y-direction. The eighth edge66Ab is connected to the end of the seventh edge65Ab on the side of the sixth face36in the y-direction, and the end of the fourth edge64A in the x-direction. In the illustrated example, the eighth edge66Ab extends along the y-direction.

The bonding section6B is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6B is located on the side of the fourth face34with respect to the bonding section6A, in the x-direction. In the illustrated example, the bonding section6B overlaps with the first portion571, the third portion573, and the second base portion56, as viewed in the y-direction. The shape of the bonding section6B is not specifically limited. In the illustrated example, the bonding section6B includes a first edge61B, a second edge62B, a third edge63B, a fourth edge64B, a fifth edge65B, a sixth edge66B, and an eighth edge68B.

The first edge61B extends along the y-direction. The first edge61B is opposed to the second edge62A. In the illustrated example, the first edge61B overlaps with the first portion571, as viewed in the y-direction.

The second edge62B is located on the opposite side of the first edge61B in the x-direction, across the center of the bonding section6B in the x-direction, and extends along the y-direction. In the illustrated example, the second edge62B overlaps with the second base portion56, as viewed in the y-direction. The second edge62B is smaller in size in the y-direction, than the first edge61B. In addition, the second edge62B is generally the same in size in the y-direction, as the second edge62A (exactly the same, or different by within ±5%).

The third edge63B is connected to the respective ends of the first edge61B and the second edge62B, on the side of the fifth face35in the y-direction. The third edge63B extends along the x-direction. In the illustrated example, the third edge63B overlaps at least with the first portion571, the third portion573, and the second base portion56, as viewed in the y-direction. In the illustrated example, in addition, the third edge63B is located generally at the same position as the third edge63A, in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located at exactly the same position, or being deviated by within ±5% of the characteristic size (size of the bonding section6A or bonding section6B in the y-direction).

The fourth edge64B is located on the opposite side of the third edge63B in the y-direction, across the center of the bonding section6B in the y-direction. The fourth edge64B extends along the x-direction. The fourth edge64B is connected to the end of the first edge61B on the side of the sixth face36in the y-direction. The fourth edge64B is smaller in size in the x-direction, than the third edge63B. The entirety of the fourth edge64B overlaps with the third edge63B, as viewed in the y-direction.

The fifth edge65B is connected to the end of the second edge62B on the side of the sixth face36in the y-direction. In the illustrated example, the fifth edge65B is inclined with respect to the x-direction and the y-direction.

The sixth edge66B is connected to the end of the fourth edge64B on the side of the fourth face34in the x-direction. In the illustrated example, the sixth edge66B extends along the y-direction.

The eighth edge68B is connected to the fifth edge65B and the sixth edge66B. In the illustrated example, the eighth edge68B extends along the x-direction.

The bonding section6C is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6C is located on the side of the fourth face34with respect to the bonding section6B, in the x-direction. In the illustrated example, the entirety of the bonding section6C overlaps with the second base portion56, as viewed in the y-direction. The shape of the bonding section6C is not specifically limited. In the illustrated example, the bonding section6C includes a first edge61C, a second edge62C, a third edge63C, a fourth edge64C, a fifth edge65C, a sixth edge66C, and an eighth edge68C.

The first edge61C extends along the y-direction. The first edge61C is opposed to the second edge62B. In the illustrated example, the first edge61C overlaps with the second base portion56, as viewed in the y-direction.

The second edge62C is located on the opposite side of the first edge61C in the x-direction, across the center of the bonding section6C in the x-direction, and extends along the y-direction. In the illustrated example, the second edge62C overlaps with the second base portion56, as viewed in the y-direction. The second edge62C is smaller in size in the y-direction, than the first edge61C. In addition, the second edge62C is generally the same in size in the y-direction, as the second edge62B (exactly the same, or different by within ±5%).

The third edge63C is connected to the respective ends of the first edge61C and the second edge62C, on the side of the fifth face35in the y-direction. The third edge63C extends along the x-direction. In the illustrated example, the third edge63C overlaps with the second base portion56, as viewed in the y-direction. In the illustrated example, in addition, the third edge63C is located generally at the same position as the third edge63B, in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located at exactly the same position, or being deviated by within ±5% of the characteristic size (size of the bonding section6B or bonding section6C in the y-direction).

The fourth edge64C is located on the opposite side of the third edge63C in the y-direction, across the center of the bonding section6C in the y-direction. The fourth edge64C extends along the x-direction. The fourth edge64C is connected to the end of the first edge61C on the side of the sixth face36in the y-direction. The fourth edge64C is smaller in size in the x-direction, than the third edge63C. The entirety of the fourth edge64C overlaps with the third edge63C, as viewed in the y-direction.

The fifth edge65C is connected to the end of the second edge62C on the side of the sixth face36in the y-direction. In the illustrated example, the fifth edge65C is inclined with respect to the x-direction and the y-direction.

The sixth edge66C is connected to the end of the fourth edge64C on the side of the fourth face34in the x-direction. In the illustrated example, the sixth edge66C extends along the y-direction.

The eighth edge68C is connected to the fifth edge65C and the sixth edge66C. In the illustrated example, the eighth edge68C extends along the x-direction.

The bonding section6D is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6D is located on the side of the fourth face34with respect to the bonding section6C, in the x-direction. In the illustrated example, the bonding section6D overlaps with the second base portion56, the first portion51P, the third portion53P, and the second portion52P, as viewed in the y-direction. The shape of the bonding section6D is not specifically limited. In the illustrated example, the bonding section6D includes a first edge61D, a second edge62D, a third edge63D, a fourth edge64D, and a fifth edge65D.

The first edge61D extends along the y-direction. The first edge61D is opposed to the second edge62C. In the illustrated example, the first edge61D overlaps with the second base portion56, as viewed in the y-direction.

The second edge62D is located on the opposite side of the first edge61D in the x-direction, across the center of the bonding section6D in the x-direction, and extends along the y-direction. In the illustrated example, the second edge62D overlaps with the second portion52P, as viewed in the y-direction. The second edge62D is smaller in size in the y-direction, than the first edge61D.

The third edge63D is connected to the respective ends of the first edge61D and the second edge62D, on the side of the fifth face35in the y-direction. The third edge63D extends along the x-direction. In the illustrated example, the third edge63D overlaps with the second base portion56, the first portion51P, the third portion53P, and the second portion52P, as viewed in the y-direction. In the illustrated example, in addition, the third edge63D is located generally at the same position as the third edge63C, in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located at exactly the same position, or being deviated by within ±5% of the characteristic size (size of the bonding section6C or bonding section6D in the y-direction).

The fourth edge64D is located on the opposite side of the third edge63D in the y-direction, across the center of the bonding section6D in the y-direction. The fourth edge64D extends along the x-direction. The fourth edge64D is connected to the end of the first edge61D on the side of the sixth face36in the y-direction. The fourth edge64D is smaller in size in the x-direction, than the third edge63D, The entirety of the fourth edge64D overlaps with the third edge63D, as viewed in the y-direction.

The fifth edge65D is connected to the second edge62D and the fourth edge64D. In the illustrated example, the fifth edge65D is inclined with respect to the x-direction and the y-direction.

The bonding section6A to the bonding section6D are formed on a region in the substrate3on the side of the sixth face36, with respect to the conductive section5in the y-direction. The region in the substrate3on the side of the sixth face36in a plan view, where the bonding sections6are formed, will be defined as a first region30A.

The plurality of leads1contain a metal, and have higher heat dissipation characteristics, for example than the substrate3. The metal to form the lead1is not specifically limited, and may be, for example, copper (Cu), aluminum, iron (Fe), oxygen-free copper, or an alloy of the cited metals, such as a Cu—Sn alloy, a Cu—Zr alloy, or a Cu—Fe alloy. The plurality of leads1may be plated with nickel (Ni). Examples of the forming method of the plurality of leads1include pressing a metal plate with a die, and patterning a metal plate by etching, without limitation thereto. The thickness of the lead1is not specifically limited, but may be, for example, approximately 0.4 mm to 0.8 mm.

In this embodiment, the plurality of leads1include a plurality of leads1A to1G, and1Z, as shown inFIG. 1toFIG. 4. The plurality of leads1A to1G constitute conduction paths, for example to the semiconductor chips4A to4F.

The lead1A is located on the substrate3and, in this embodiment, on the first face31. The lead1A exemplifies a first lead in the present disclosure. The lead1A is bonded to the bonding section6A, via a bonding material81. The bonding material81may be any material that is capable of bonding the lead1A to the bonding section6A. From the viewpoint of efficient heat transmission from the lead1A to the substrate3, it is preferable to employ a material having high thermal conductivity as the bonding material81, such as silver paste, copper paste, or solder. However, the bonding material81may be an insulative material such as an epoxy-based resin or a silicone-based resin. In the case where the bonding section6A is not provided on the substrate3, the lead1A may be bonded to the substrate3.

The configuration of the lead1A is not specifically limited and, in this embodiment, the lead1A includes a first portion11A, a second portion12A, a third portion13A, and a fourth portion14A, each of which will be described hereunder.

As shown inFIG. 5,FIG. 9, andFIG. 10, the first portion11A includes a main surface111A, a back surface112A, a first face121A, a second face122A, a third face123A, a fourth face124Aa, a fifth face125Aa, a sixth face126Aa, a seventh face127Aa, an eighth face124Ab, a ninth face125Ab, a tenth face126Ab, an eleventh face127Ab, a plurality of recesses and a groove1112A.

The main surface111A is oriented in the same direction as the first face31, in the z-direction.

The back surface112A is oriented to the opposite side of the main surface111A in the z-direction and, in the illustrated example, a planar surface. The back surface112A is bonded to the bonding section6A via the bonding material81, as shown inFIG. 5andFIG. 9.

The first face121A is located between the main surface111A and the back surface112A in the z-direction, and oriented in the same direction as the third face33as a whole, in the x-direction. In the illustrated example, the first face121A is connected to the main surface111A and the back surface112A.

The second face122A is located on the opposite side of the first face121A in the x-direction, and oriented in the same direction as the fourth face34, in the x-direction. The second face122A is located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A. The second face122A is smaller in size in the y-direction, than the first face121A.

The third face123A is located between the first face121A and the second face122A in the x-direction, and oriented in the same direction as the fifth face35, in the y-direction. The third face123A is located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A.

The fourth face124Aa and the eighth face124Ab are located on the opposite side of the third face123A in the y-direction, and oriented in the same direction as the sixth face36in the y-direction. The fourth face124Aaa and the eighth face124Ab are spaced apart from each other in the x-direction. The fourth face124A is located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A. The fourth face124Aa and the eighth face124Ab are located generally at the same position in the y-direction. Here, the expression “generally at the same position” in the y-direction refers to, for example, being at exactly the same position, or being deviated by within ±5% of the characteristic size (size of the first portion11A in the y-direction).

The fifth face125Aa and the ninth face125Ab are located between the first face121A and the second face122A, in the x-direction. The fifth face125Aa is connected to the end of the first face121A on the side of the sixth face36in the y-direction. The ninth face125Ab is connected to the end of the second face122A on the side of the sixth face36in the y-direction. The fifth face125Aa and the ninth face125Ab are inclined with respect to the x-direction. The fifth face125Aa and the ninth face125Ab are located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A.

The sixth face126Aa is located between the fifth face125Aa and the fourth face124Aa in the x-direction, and between the fifth face125Aa and the fourth face124Aa in the y-direction. In the illustrated example, the sixth face126Aa is connected to the fourth face124Aa and the fifth face125Aa.

The tenth face126Ab is located between the ninth face125Ab and the eighth face124Ab in the x-direction, and between the ninth face125Ab and the eighth face124Ab in the y-direction. In the illustrated example, the tenth face126Ab is connected to the eighth face124Ab and the ninth face125Ab. The sixth face126Aa and the tenth face126Ab extend along the y-direction. The sixth face126Aa and the tenth face126Ab are located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A.

The seventh face127Aa is located between the first face121A and the third face123A in the x-direction, and between the first face121A and the third face123A in the y-direction. The seventh face127Aa is connected to the first face121A and the third face123A. In the illustrated example, the seventh face127Aa forms a convex curved surface, as viewed in the z-direction. The seventh face127Aa is located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A. The eleventh face127Ab is located between the second face122A and the third face123A in the x-direction, and between the second face122A and the third face123A in the y-direction. The eleventh face127Ab is connected to the second face122A and the third face123A. In the illustrated example, the eleventh face127Ab forms a convex curved surface, as viewed in the z-direction. The eleventh face127Ab is located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A.

In the illustrated example, the first face121A, the second face122A, and the third face123A each include a plurality of protrusions131A. The plurality of protrusions131A each protrude outwardly of the first portion11A as viewed in the z-direction, and extend along the z-direction. Here, the plurality of protrusions131A may be formed on the first portion11A, in portions other than the first face121A, the second face122A, and the third face123A. In addition, at least one of the first face121A, the second face122A, and the third face123A may be without the plurality of protrusions131A.

The plurality of recesses1111A are each recessed from the main surface111A in the z-direction. The shape of the recess1111A in a z-direction view is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular. In the illustrated example, the plurality of recesses1111A are arranged in a matrix pattern.

The groove1112A is recessed from the main surface111A in the z-direction. In the illustrated example, the shape of the groove1112A in a z-direction view is not specifically limited. In the illustrated example, the groove1112A includes a first portion1112Aa of a rectangular shape, and a pair of second portions1112Ab extending along the y-direction in the rectangular shape. The cross-sectional shape of the groove1112A is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular.

The number of rows of the plurality of recesses1111A in the y-direction is larger in the region between the groove1112A, and the fourth face124Aa and eighth face124Ab, than in the region between the groove1112A and the third face123A.

The third portion13A and the fourth portion14A are covered with the encapsulating resin7. The third portion13A is connected to the first portion11A and the fourth portion14A. In the illustrated example, the third portion13A is connected to a portion of the first portion11A between the fourth face124Aa and the eighth face124Ab. In addition, the third portion13A overlaps with the sixth face36, as viewed in the z-direction. As shown inFIG. 5, the fourth portion14A is shifted from the first portion11A in the z-direction, to the side to which the main surface111A is oriented. The end portion of the fourth portion14A is flush with a sixth face76of the resin7.

The second portion12A is connected to the end portion of the fourth portion14A, and corresponds to a portion of the lead1A sticking out from the encapsulating resin7. The second portion12A sticks out to the opposite side of the first portion11A, in the y-direction. The second portion12A is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion12A is bent in the z-direction, to the side to which the main surface111A is oriented.

The lead1B is located on the substrate3and, in this embodiment, on the first face31. The lead1B exemplifies a first lead in the present disclosure. The lead1B is bonded to the bonding section6B, via the bonding material81. In the case where the bonding section6B is not provided on the substrate3, the lead1B may be bonded to the substrate3.

The configuration of the lead1B is not specifically limited. In this embodiment the lead1B includes, as shown inFIG. 4andFIG. 14, a first portion11B, a second portion12B, a third portion13B, and a fourth portion14B, each of which will be described hereunder.

As shown inFIG. 9andFIG. 14, the first portion11B includes a main surface111B, a back surface112B, a first face121B, a second face122B, a third face123B, a fourth face124B, a fifth face125B, a sixth face126B, a seventh face127B, an eighth face128B, a ninth face125Bb, a tenth face126Bb, an eleventh face127Bb, a plurality of recesses1111B, and a groove1112B.

The main surface111B is oriented in the same direction as the first face31, in the z-direction.

The back surface112B is oriented to the opposite side of the main surface111B in the z-direction and, in the illustrated example, a planar surface. The back surface112B is bonded to the bonding section6B via the bonding material81, as shown inFIG. 9.

The first face121B is located between the main surface111B and the back surface112B in the z-direction, and oriented in the same direction as the third face33as a whole, in the x-direction. In the illustrated example, the first face121B is connected to the main surface111B and the back surface112B. The first face121B is opposed to the second face122A.

The second face122B is located on the opposite side of the first face121B in the x-direction, and oriented in the same direction as the fourth face34, in the x-direction. The second face122B is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B. The second face122B is smaller in size in the y-direction, than the first face121B.

The third face123B is located between the first face121B and the second face122B in the x-direction, and oriented in the same direction as the fifth face35, in the y-direction. The third face123B is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B.

The fourth face124B is located on the opposite side of the third face123B in the y-direction, and oriented in the same direction as the sixth face36in the y-direction. The fourth face124B is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B. In the illustrated example, the fourth face124B overlaps with the third face123B, as viewed in the y-direction.

The fifth face125Ba is connected to the end of the first face121B on the side of the sixth face36in the y-direction. The fifth face125Ba is opposed to the ninth face125Ab. The fifth face125Ba is inclined with respect to the x-direction. The fifth face125Ba is spaced apart from the third face123B, as viewed in the y-direction. The fifth face125Ba is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B. The ninth face125Bb is connected to the end of the second face122B on the side of the sixth face36in the y-direction. The ninth face125Bb is inclined with respect to the x-direction and the y-direction. The ninth face125Bb overlaps with the third face123B, as viewed in the y-direction. The ninth face125Bb is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B.

The sixth face126Ba extends along the y-direction. In the illustrated example, the sixth face126Ba is connected to the fifth face125Ba. The sixth face126Ba is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B. The tenth face126Bb extends along the y-direction. In the illustrated example, the tenth face126Bb is connected to the fourth face124B. The tenth face126Bb is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B.

The seventh face127Ba is located between the first face121B and the third face123B in the x-direction, and between the first face121B and the third face123B in the y-direction. The seventh face127Ba is connected to the first face121B and the third face123B. In the illustrated example, the seventh face127Ba forms a convex curved surface, as viewed in the z-direction. The seventh face127Ba is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B. The eleventh face127Bb is located between the second face122B and the third face123B in the x-direction, and between the second face122B and the third face123B in the y-direction. The eleventh face127Bb is connected to the second face122B and the third face123B. In the illustrated example, the eleventh face127Bb forms a convex curved surface, as viewed in the z-direction. The eleventh face127Bb is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B.

The eighth face128B is located between the tenth face126Bb and the ninth face125Bb in the x-direction and the y-direction, and connected to the tenth face126Bb and the ninth face125Bb. In the illustrated example, the eighth face128B extends along the x-direction. The eighth face128B is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B.

In the illustrated example, the first face121B, the second face122B, and the third face123B each include a plurality of protrusions131B. The plurality of protrusions131B each protrude outwardly of the first portion11B as viewed in the z-direction, and extend along the z-direction. Here, the plurality of protrusions131B may be formed on the first portion11B, in portions other than the first face121B, the second face122B, and the third face123B. In addition, at least one of the first face121B, the second face122B, and the third face123B may be without the plurality of protrusions131B.

The plurality of recesses1111B are each recessed from the main surface111B in the z-direction. The shape of the recess1111B in a z-direction view is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular. In the illustrated example, the plurality of recesses1111B are arranged in a matrix pattern.

The groove1112B is recessed from the main surface111B in the z-direction. In the illustrated example, the shape of the groove1112B in a z-direction view is not specifically limited and, in the illustrated example, the groove1112B has a rectangular shape. The cross-sectional shape of the groove1112B is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular.

The number of rows of the plurality of recesses1111B in the y-direction is larger in the region between the groove1112B and the fourth face124B, than in the region between the groove1112B and the third face123B.

The third portion13B and the fourth portion14B are covered with the encapsulating resin7. The third portion13B is connected to the first portion11B and the fourth portion14B. In the illustrated example, the third portion13B is connected to a portion of the first portion11B adjacent to the fourth face124B. In addition, the third portion13B overlaps with the sixth face36, as viewed in the z-direction. As shown inFIG. 5, the fourth portion14B is, like the fourth portion14A of the lead1A, shifted from the first portion11B in the z-direction, to the side to which the main surface111B is oriented. The end portion of the fourth portion14B is flush with the sixth face76of the resin7.

The second portion12B is connected to the end portion of the fourth portion14B, and corresponds to a portion of the lead1B sticking out from the encapsulating resin7. The second portion12B sticks out to the opposite side of the first portion11B, in the y-direction. The second portion12B is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion12B is bent in the z-direction, to the side to which the main surface111B is oriented.

The lead1C is located on the substrate3and, in this embodiment, on the first face31. The lead1C exemplifies a first lead in the present disclosure. The lead1C is bonded to the bonding section6C, via the bonding material81. In the case where the bonding section6C is not provided on the substrate3, the lead1C may be bonded to the substrate3.

The configuration of the lead1C is not specifically limited. In this embodiment the lead1C includes, as shown inFIG. 4andFIG. 14, a first portion11C, a second portion12C, a third portion13C, and a fourth portion14C, each of which will be described hereunder.

As shown inFIG. 9andFIG. 14, the first portion11C includes a main surface111C, a back surface112C, a first face121C, a second face122C, a third face123C, a fourth face124C, a fifth face125Ca, a sixth face126Ca, a seventh face127Ca, an eighth face128C, a ninth face125Cb, a tenth face126Cb, an eleventh face127Cb, a plurality of recesses1111C, and a groove1112C.

The main surface111C is oriented in the same direction as the first face31, in the z-direction.

The back surface112C is oriented to the opposite side of the main surface111C in the z-direction and, in the illustrated example, a planar surface. The back surface112C is bonded to the bonding section6C via the bonding material81, as shown inFIG. 9.

The first face121C is located between the main surface111C and the back surface112C in the z-direction, and oriented in the same direction as the third face33as a whole, in the x-direction. In the illustrated example, the first face121C is connected to the main surface111C and the back surface112C. The first face121C is opposed to the second face122B.

The second face122C is located on the opposite side of the first face121C in the x-direction, and oriented in the same direction as the fourth face34, in the x-direction. The second face122C is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C. The second face122C is smaller in size in the y-direction, than the first face121C.

The third face123C is located between the first face121C and the second face122C in the x-direction, and oriented in the same direction as the fifth face35, in the y-direction. The third face123C is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C.

The fourth face124C is located on the opposite side of the third face123C in the y-direction, and oriented in the same direction as the sixth face36in the y-direction. The fourth face124C is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C. In the illustrated example, the fourth face124C overlaps with the third face123C, as viewed in the y-direction.

The fifth face125Ca is connected to the end of the first face121C on the side of the sixth face36in the y-direction. The fifth face125Ca is opposed to the ninth face125Bb. The fifth face125Ca is inclined with respect to the x-direction and the y-direction. The fifth face125Ca is spaced apart from the third face123C, as viewed in the y-direction. The fifth face125Ca is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C. The ninth face125Cb is connected to the end of the second face122C on the side of the sixth face36in the y-direction. The ninth face125Cb is inclined with respect to the x-direction and the y-direction. The ninth face125Cb overlaps with the third face123C, as viewed in the y-direction. The ninth face125Cb is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C.

The sixth face126Ca is located on the opposite side of the third face123C with respect to the fifth face125Ca, in the y-direction. In the illustrated example, the sixth face126Ca is opposed to the tenth face126Bb. The sixth face126Ca extends along the y-direction. The sixth face126Ca is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C. The tenth face126Cb is located on the opposite side of the third face123C with respect to the ninth face125Cb, in the y-direction. In the illustrated example, the tenth face126Cb is connected to the fourth face1240and the ninth face125Cb. The tenth face126Cb extends along the y-direction. The tenth face126Cb is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C.

The seventh face127Ca is located between the first face121C and the third face1230in the x-direction, and between the first face121C and the third face123C in the y-direction. The seventh face127Ca is connected to the first face121C and the third face123C. In the illustrated example, the seventh face127Ca forms a convex curved surface, as viewed in the z-direction. The seventh face127Ca is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface1120. The eleventh face127Cb is located between the second face122C and the third face123C in the x-direction, and between the second face122C and the third face123C in the y-direction. The eleventh face127Cb is connected to the second face122C and the third face123C. In the illustrated example, the eleventh face127Cb forms a convex curved surface, as viewed in the z-direction. The eleventh face127Cb is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C.

The eighth face128C is located between the fifth face125Ca and the sixth face126Ca in the x-direction and the y-direction, and connected to the fifth face125Ca and the sixth face126Ca. In the illustrated example, the eighth face128C extends along the x-direction, and is opposed to the eighth face128B. The eighth face128C is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C.

In the illustrated example, the first face121C, the second face122C, and the third face123C each include a plurality of protrusions131C. The plurality of protrusions131C each protrude outwardly of the first portion11C as viewed in the z-direction, and extend along the z-direction. Here, the plurality of protrusions131C may be formed on the first portion11C, in portions other than the first face121C, the second face122C, and the third face123C. In addition, at least one of the first face121C, the second face122C, and the third face123C may be without the plurality of protrusions131C.

The plurality of recesses1111C are each recessed from the main surface111C in the z-direction. The shape of the recess1111C in a z-direction view is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular. In the illustrated example, the plurality of recesses1111C are arranged in a matrix pattern.

The groove1112C is recessed from the main surface111C in the z-direction. In the illustrated example, the shape of the groove1112C in a z-direction view is not specifically limited and, in the illustrated example, the groove1112C has a rectangular shape. The cross-sectional shape of the groove1112C is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular.

The number of rows of the plurality of recesses1111C in the y-direction is larger in the region between the groove1112C and the fourth face124C, than in the region between the groove1112C and the third face123C.

The third portion13C and the fourth portion14C are covered with the encapsulating resin7. The third portion13C is connected to the first portion11C and the fourth portion14C. In the illustrated example, the third portion13C is connected to a portion of the first portion11C adjacent to the fourth face1240. In addition, the third portion13C overlaps with the sixth face36, as viewed in the z-direction. The fourth portion14C is, like the fourth portion14A of the lead1A, shifted from the first portion11C in the z-direction, to the side to which the main surface111C is oriented, and connected to the second portion12C. The end portion of the fourth portion14C is flush with the sixth face76of the resin7.

The second portion12C is connected to the end portion of the fourth portion14C, and corresponds to a portion of the lead1C sticking out from the encapsulating resin7. The second portion12C sticks out to the opposite side of the first portion11C, in the y-direction. The second portion12C is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion12C is bent in the z-direction, to the side to which the main surface111C is oriented.

The lead1D is located on the substrate3and, in this embodiment, on the first face31. The lead1D exemplifies a first lead in the present disclosure. The lead1D is bonded to the bonding section6D, via the bonding material81. In the case where the bonding section6D is not provided on the substrate3, the lead1D may be bonded to the substrate3.

The configuration of the lead1D is not specifically limited. In this embodiment the lead1D includes, as shown inFIG. 4andFIG. 14, a first portion11D, a second portion12D, a third portion13D, and a fourth portion14D, each of which will be described hereunder.

As shown inFIG. 9andFIG. 14, the first portion11D includes a main surface111D, a back surface112D, a first face121D, a second face122D, a third face123D, a fourth face124D, a fifth face125Da, a sixth face126D, a seventh face127Da, an eighth face125Db, a ninth face127Db, a plurality of recesses1111D, and a groove1112D.

The main surface111D is oriented in the same direction as the first face31, in the z-direction.

The back surface112D is oriented to the opposite side of the main surface111D in the z-direction and, in the illustrated example, a planar surface. The back surface112D is bonded to the bonding section6D via the bonding material81, as shown inFIG. 9.

The first face121D is located between the main surface111D and the back surface112D in the z-direction, and oriented in the same direction as the third face33as a whole, in the x-direction. In the illustrated example, the first face121D is connected to the main surface111D and the back surface112D. The first face121D is opposed to the second face122C.

The second face122D is located on the opposite side of the first face121D in the x-direction, and oriented in the same direction as the fourth face34, in the x-direction. The second face122D is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D. The second face122D is larger in size in the y-direction, than the first face121D.

The third face123D is located between the first face121D and the second face122D in the x-direction, and oriented in the same direction as the fifth face35, in the y-direction. The third face123D is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D.

The fourth face124D is located on the opposite side of the third face123D in the y-direction, and oriented in the same direction as the sixth face36in the y-direction. The fourth face124D is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D. In the illustrated example, the fourth face124D overlaps with the third face123D, as viewed in the y-direction.

The fifth face125Da is connected to the end of the first face121D on the side of the sixth face36in the y-direction. The fifth face125Da is opposed to the ninth face125Cb. The fifth face125Da is inclined with respect to the x-direction and the y-direction. The fifth face125Da is spaced apart from the third face123D, as viewed in the y-direction. The fifth face125Da is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D. The eighth face125Db is connected to the end of the second face122D on the side of the sixth face36in the y-direction. The eighth face125Db is inclined with respect to the x-direction and the y-direction. The eighth face125Db overlaps with the third face123D, as viewed in the y-direction. The eighth face125Db is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D.x

The sixth face126D is located on the opposite side of the third face123D with respect to the fifth face125Da, in the y-direction. In the illustrated example, the sixth face126D is opposed to the sixth face126C. The sixth face126D is connected to the fifth face125Da. The sixth face126D extends along the y-direction. The sixth face126D is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D.

The seventh face127Da is located between the first face121D and the third face123D in the x-direction, and between the first face121D and the third face123D in the y-direction. The seventh face127Da is connected to the first face121D and the third face123D. In the illustrated example, the seventh face127Da forms a convex curved surface, as viewed in the z-direction. The seventh face127Da is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D. The ninth face127Db is located between the second face122D and the third face123D in the x-direction, and between the second face122D and the third face123D in the y-direction. The ninth face127Db is connected to the second face122D and the third face123D. In the illustrated example, the ninth face127Db forms a convex curved surface, as viewed in the z-direction. The ninth face127Db is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D.

In the illustrated example, the first face121D, the second face122D, and the third face123D each include a plurality of protrusions131D. The plurality of protrusions131D each protrude outwardly of the first portion11D as viewed in the z-direction, and extend along the z-direction. Here, the plurality of protrusions131D may be formed on the first portion11D, in portions other than the first face121D, the second face122D, and the third face123D. In addition, at least one of the first face121D, the second face122D, and the third face123D may be without the plurality of protrusions131D.

The plurality of recesses1111D are each recessed from the main surface111D in the z-direction. The shape of the recess1111D in a z-direction view is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular. In the illustrated example, the plurality of recesses1111D are arranged in a matrix pattern.

The groove1112D is recessed from the main surface111D in the z-direction. In the illustrated example, the shape of the groove1112D in a z-direction view is not specifically limited and, in the illustrated example, the groove1112D has a rectangular shape. The cross-sectional shape of the groove1112D is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular.

The number of rows of the plurality of recesses1111D in the y-direction is larger in the region between the groove1112D and the fourth face124D, than in the region between the groove1112D and the third face123D.

Regarding the third portion13D and the fourth portion14D, the third portion13D is connected to the first portion11D and the fourth portion14D. In the illustrated example, the third portion13D is connected to a portion of the first portion11D adjacent to the fourth face124D. In addition, the third portion13D overlaps with the sixth face36, as viewed in the z-direction, and is covered with the encapsulating resin7. The fourth portion14D is, like the fourth portion14A of the lead1A, shifted from the first portion11D in the z-direction, to the side to which the main surface111D is oriented, and connected to the second portion12D. The end portion of the fourth portion14D is flush with the sixth face76of the resin7.

The second portion12D is connected to the end portion of the fourth portion14D, and corresponds to a portion of the lead1D sticking out from the encapsulating resin7. The second portion12D sticks out to the opposite side of the first portion11D, in the y-direction. The second portion12D is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion12D is bent in the z-direction, to the side to which the main surface111D is oriented.

The lead1E is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1E is located on the side to which the sixth face36is oriented, with respect to the substrate3in the y-direction.

The configuration of the lead1E is not specifically limited. In this embodiment the lead1E includes, as shown inFIG. 4, a second portion12E and a fourth portion14E, each of which will be described hereunder.

The fourth portion14E is covered with the encapsulating resin7. The fourth portion14E is, like the fourth portion14D of the lead1D, shifted from the first portion11D in the z-direction, to the side to which the main surface111D is oriented. The end portion of the fourth portion14E is flush with the sixth face76of the resin7.

The second portion12E is connected to the end portion of the fourth portion14E, and corresponds to a portion of the lead1E sticking out from the encapsulating resin7. The second portion12E sticks out to the opposite side of the fourth portion14E, in the y-direction. The second portion12E is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion12E is bent in the z-direction, to the side to which the first face31is oriented.

The lead1F is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1F is located on the side to which the sixth face36is oriented, with respect to the substrate3in the y-direction.

The configuration of the lead1F is not specifically limited. In this embodiment the lead1F includes, as shown inFIG. 4, a second portion12F and a fourth portion14F, each of which will be described hereunder.

The fourth portion14F is covered with the encapsulating resin7. The fourth portion14F is, like the fourth portion14D of the lead1D, shifted from the first portion11D in the z-direction, to the side to which the main surface111D is oriented. The end portion of the fourth portion14F is flush with the sixth face76of the resin7.

The second portion12F is connected to the end portion of the fourth portion14F, and corresponds to a portion of the lead1F sticking out from the encapsulating resin7. The second portion12F sticks out to the opposite side of the fourth portion14F, in the y-direction. The second portion12F is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion12F is bent in the z-direction, to the side to which the first face31is oriented.

The lead1G is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1G is located on the side to which the fourth face34is oriented, with respect to the substrate3in the x-direction. In addition, the lead1G is located on the opposite side of the fourth portion14D, with respect to the lead1G in the x-direction.

The configuration of the lead1G is not specifically limited. In this embodiment the lead1G includes, as shown inFIG. 4, a second portion12G and a fourth portion14G, each of which will be described hereunder.

The fourth portion14G is covered with the encapsulating resin7. The fourth portion14G is, like the fourth portion14D of the lead1D, shifted from the first portion11D in the z-direction, to the side to which the main surface111D is oriented. The fourth portion14G overlaps with the fourth portion14F, as viewed in the y-direction. The end portion of the fourth portion14G is flush with the sixth face76of the resin7.

The second portion12G is connected to the end portion of the fourth portion14G, and corresponds to a portion of the lead1G sticking out from the encapsulating resin7. The second portion12G sticks out to the opposite side of the fourth portion14G, in the y-direction. The second portion12G is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion12G is bent in the z-direction, to the side to which the first face31is oriented.

The lead1Z is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1Z is located on the side to which the third face33is oriented, with respect to the substrate3in the x-direction. In addition, the lead1Z is located on the opposite side of the lead13, with respect to the lead1A in the x-direction.

The configuration of the lead1Z is not specifically limited. In this embodiment the lead1Z includes, as shown inFIG. 4, a second portion12Z and a fourth portion14Z, each of which will be described hereunder. In this embodiment, the lead1Z is insulated from the circuit of the semiconductor device A1.

The fourth portion14Z is covered with the encapsulating resin7. The fourth portion14Z is, like the fourth portion14D of the lead1D, shifted from the first portion11D in the z-direction, to the side to which the main surface111D is oriented. The shape of the fourth portion14Z is not specifically limited and, in the illustrated example, the fourth portion14Z has a strip shape extending along the y-direction. The end portion of the fourth portion14Z is flush with the sixth face76of the resin7.

The second portion12Z is connected to the end portion of the fourth portion14Z, and corresponds to a portion of the lead1Z sticking out from the encapsulating resin7. The second portion12Z sticks out to the opposite side of the fourth portion14Z, in the y-direction. The second portion12Z is used, for example, when the semiconductor device A1is mounted on an external circuit board. In the illustrated example, the second portion12Z is bent in the z-direction, to the side to which the first face31is oriented.

As shown inFIG. 4, the second portion12A, the second portion123, the second portion12C, and the second portion12D are aligned in the x-direction, with clearances G11between each other. The clearances G11have generally the same width, with a difference within ±5% from each other. The second portion12D and the second portion12E are spaced apart from each other in the x-direction, by a clearance G12. The clearance G12has generally the same width as the clearance G11, with a difference within ±5% from each other. The second portion12E, the second portion12F, and the second portion12G are aligned in the x-direction, with clearances G13between each other. The clearances G13are narrower than the clearances G11, and the difference in length between the plurality of clearances G13is within ±5%. The second portion12A and the second portion12Z are spaced apart from each other in the x-direction, by a clearance G14. The clearance G14is wider than the clearance G11.

The plurality of leads2contain a metal, and have higher heat dissipation characteristics, for example than the substrate3. The metal to form the lead2is not specifically limited, and may be, for example, copper (Cu), aluminum, iron (Fe), oxygen-free copper, or an alloy of the cited metals, such as a Cu—Sn alloy, a Cu—Zr alloy, or a Cu—Fe alloy. The plurality of leads2may be plated with nickel (Ni). Examples of the forming method of the plurality of leads2include pressing a metal plate with a die, and patterning a metal plate by etching, without limitation thereto. The thickness of the lead2is not specifically limited, but may be, for example, approximately 0.4 mm to 0.8 mm. The plurality of leads2are located so as to overlap with the second region303, as viewed in the z-direction.

In this embodiment, the plurality of leads2include a plurality of leads2A to2P, and2Z, as shown inFIG. 1toFIG. 4. The plurality of leads2A to2O constitute conduction paths, for example to the control chips4G and4H.

The lead2A is spaced apart from the plurality of leads1. The lead2A is located on the conductive section5. The lead2A is electrically connected to the conductive section5. The lead2A exemplifies a second lead in the present disclosure. The lead2A is bonded to the second portion52A of the wiring50A in the conductive section5, via a conductive bonding material82. The conductive bonding material82may be any material that is capable of bonding, and electrically connecting, the lead2A to the second portion52A. For example, silver paste, copper paste, or solder may be employed as the conductive bonding material82. The conductive bonding material82corresponds to the first conductive bonding material in the present disclosure.

The configuration of the lead2A is not specifically limited. In this embodiment the lead2A includes, as shown inFIG. 15, a first portion21A, a second portion22A, a third portion23A, and a fourth portion24A, each of which will be described hereunder.

The first portion21A is bonded to the second portion52A of the wiring50A. The shape of the first portion21A is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21A has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21A overlaps with the second portion52A, as viewed in the z-direction. In addition, the first portion21A includes a through hole211A. The through hole211A is formed so as to penetrate through the first portion21A, in the z-direction. The inside of the through hole211A is filled with the conductive bonding material82, like a through hole211C in a first portion21C of the lead2C shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2A. However, the conductive bonding material82may be provided only inside the through hole211A, so as not to reach the surface of the lead2A.

The third portion23A and the fourth portion24A are covered with the encapsulating resin7. The third portion23A is connected to the first portion21A and the fourth portion24A. The fourth portion24A is shifted in the z-direction with respect to the first portion21A, to the side to which the first face31is oriented, like a third portion23C and a fourth portion24C of the lead2C shown inFIG. 5. The end portion of the fourth portion24A is flush with a fifth face75of the resin7. In the illustrated example, the third portion23A and the fourth portion24A generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23A, or fourth portion24A in the x-direction). In addition, the third portion23A and the fourth portion24A are shifted toward the third face33in the x-direction, from the center of the first portion21A in the x-direction. The third portion23A overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22A is connected to the end portion of the fourth portion24A, and corresponds to a portion of the lead2A sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22A sticks out to the opposite side of the first portion21A, in the y-direction. The second portion22A is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22A is bent in the z-direction, to the side to which the first face31is oriented. The second portion22A, the third portion23A, and the fourth portion24A each include, on the respective sides thereof in the x-direction, edges extending along the y-direction.

The lead2B is spaced apart from the plurality of leads1. The lead2B is located on the conductive section5. The lead2B is electrically connected to the conductive section5. The lead2B exemplifies a second lead in the present disclosure. The lead2B is bonded to the second portion52B of the wiring50B in the conductive section5, via the conductive bonding material82.

The configuration of the lead2B is not specifically limited. In this embodiment the lead2B includes, as shown inFIG. 15, a first portion21B, a second portion22B, a third portion23B, and a fourth portion24B, each of which will be described hereunder.

The first portion21B is bonded to the second portion52B of the wiring50B. The shape of the first portion21B is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21B has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21B overlaps with the second portion52B, as viewed in the z-direction. In addition, the first portion21B includes a through hole211B. The through hole211B is formed so as to penetrate through the first portion21B, in the z-direction. The inside of the through hole211B is filled with the conductive bonding material82, like the through hole211C in the first portion21C of the lead2C shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2B. However, the conductive bonding material82may be provided only inside the through hole211B, so as not to reach the surface of the lead2B.

The third portion23B and the fourth portion24B are covered with the encapsulating resin7. The third portion23B is connected to the first portion21B and the fourth portion24B. The fourth portion24B is shifted in the z-direction with respect to the first portion21B, to the side to which the first face31is oriented, like the third portion23C and the fourth portion24C of the lead2C shown inFIG. 5. The end portion of the fourth portion24B is flush with the sixth face75of the resin7. In the illustrated example, the first portion21B, the third portion23B, and the fourth portion24B generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21B, third portion23B, or fourth portion24B in the x-direction). The third portion23B overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22B is connected to the end portion of the fourth portion24B, and corresponds to a portion of the lead2B sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22B sticks out to the opposite side of the first portion21B, in the y-direction. The second portion22B is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22B is bent in the z-direction, to the side to which the first face31is oriented. The second portion22B, the third portion23B, and the fourth portion24B each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22B, the third portion23B, and the fourth portion24B, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22A, the third portion23A, and the fourth portion24A, on the side of the fourth face34in the x-direction.

The lead2C is spaced apart from the plurality of leads1. The lead2C is located on the conductive section5. The lead2C is electrically connected to the conductive section5. The lead2C exemplifies a second lead in the present disclosure. The lead2C is bonded to the second portion52C of the wiring50C in the conductive section5, via the conductive bonding material82.

The configuration of the lead2C is not specifically limited. In this embodiment the lead2C includes, as shown inFIG. 15, a first portion21C, a second portion22C, a third portion23C, and a fourth portion24C, each of which will be described hereunder.

The first portion21C is bonded to the second portion52C of the wiring50C. The shape of the first portion21C is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21C has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21C overlaps with the second portion52C, as viewed in the z-direction. In addition, the first portion21C includes a through hole211C. The through hole211C is formed so as to penetrate through the first portion21C, in the z-direction. The inside of the through hole211C is filled with the conductive bonding material82, as shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2C. However, the conductive bonding material82may be provided only inside the through hole211C, so as not to reach the surface of the lead2C.

The third portion23C and the fourth portion24C are covered with the encapsulating resin7. The third portion23C is connected to the first portion21C and the fourth portion24C. As shown inFIG. 5, the fourth portion24C is shifted in the z-direction with respect to the first portion21C, to the side to which the first face31is oriented. The end portion of the fourth portion24C is flush with the sixth face75of the resin7. In the illustrated example, the first portion21C, the third portion23C, and the fourth portion24C generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21C, third portion23C, or fourth portion24C in the x-direction). The third portion23C overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22C is connected to the end portion of the fourth portion24C, and corresponds to a portion of the lead2C sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22C sticks out to the opposite side of the first portion21C, in the y-direction. The second portion22C is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22C is bent in the z-direction, to the side to which the first face31is oriented. The second portion22C, the third portion23C, and the fourth portion24C each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22C, the third portion23C, and the fourth portion24C, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22B, the third portion23B, and the fourth portion24B, on the side of the fourth face34in the x-direction.

The lead2D is spaced apart from the plurality of leads1. The lead2D is located on the conductive section5. The lead2D is electrically connected to the conductive section5. The lead2D exemplifies a second lead in the present disclosure. The lead2D is bonded to the second portion52D of the wiring50D in the conductive section5, via the conductive bonding material82.

The configuration of the lead2D is not specifically limited. In this embodiment the lead2D includes, as shown inFIG. 15, a first portion21D, a second portion22D, a third portion23D, and a fourth portion24D, each of which will be described hereunder.

The first portion21D is bonded to the second portion52D of the wiring50D. The shape of the first portion21D is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21D has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21D overlaps with the second portion52D, as viewed in the z-direction. In addition, the first portion21D includes a through hole211D. The through hole211D is formed so as to penetrate through the first portion21D, in the z-direction. The inside of the through hole211D is filled with the conductive bonding material82, like the through hole211C in the first portion21C of the lead2C shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2D. However, the conductive bonding material82may be provided only inside the through hole211D, so as not to reach the surface of the lead2D.

The third portion23D and the fourth portion24D are covered with the encapsulating resin7. The third portion23D is connected to the first portion21D and the fourth portion24D. The fourth portion24D is shifted in the z-direction with respect to the first portion21D, to the side to which the first face31is oriented, like the third portion23C and the fourth portion24C of the lead2C shown inFIG. 5. The end portion of the fourth portion24D is flush with the sixth face75of the resin7. In the illustrated example, the first portion21D, the third portion23D, and the fourth portion24D generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21D, third portion23D, or fourth portion24D in the x-direction). The third portion23D overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22D is connected to the end portion of the fourth portion24D, and corresponds to a portion of the lead2D sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22D sticks out to the opposite side of the first portion21D, in the y-direction. The second portion22D is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22D is bent in the z-direction, to the side to which the first face31is oriented. The second portion22D, the third portion23D, and the fourth portion24D each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22D, the third portion23D, and the fourth portion24D, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22C, the third portion23C, and the fourth portion24C, on the side of the fourth face34in the x-direction.

The lead2E is spaced apart from the plurality of leads1. The lead2E is located on the conductive section5. The lead2E is electrically connected to the conductive section5. The lead2E exemplifies a second lead in the present disclosure. The lead2E is bonded to the second portion52E of the wiring50E in the conductive section5, via the conductive bonding material82.

The configuration of the lead2E is not specifically limited. In this embodiment the lead2E includes, as shown inFIG. 15, a first portion21E, a second portion22E, a third portion23E, and a fourth portion24E, each of which will be described hereunder.

The first portion21E is bonded to the second portion52E of the wiring50E. The shape of the first portion21E is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21E has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21E overlaps with the second portion52E, as viewed in the z-direction. In addition, the first portion21E includes a through hole211E. The through hole211E is formed so as to penetrate through the first portion21E, in the z-direction. The inside of the through hole211E is filled with the conductive bonding material82, like the through hole211C in the first portion21C of the lead2C shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2E. However, the conductive bonding material82may be provided only inside the through hole211E, so as not to reach the surface of the lead2E.

The third portion23E and the fourth portion24E are covered with the encapsulating resin7. The third portion23E is connected to the first portion21E and the fourth portion24E. The fourth portion24E is shifted in the z-direction with respect to the first portion21E, to the side to which the first face31is oriented, like the fourth portion24C of the lead2C shown inFIG. 5. The end portion of the fourth portion24E is flush with the sixth face75of the resin7. In the illustrated example, the first portion21E, the third portion23E, and the fourth portion24E generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21E, third portion23E, or fourth portion24E in the x-direction). The third portion23E overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22E is connected to the end portion of the fourth portion24E, and corresponds to a portion of the lead2E sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22E sticks out to the opposite side of the first portion21E, in the y-direction. The second portion22E is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22E is bent in the z-direction, to the side to which the first face31is oriented. The second portion22E, the third portion23E, and the fourth portion24E each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22E, the third portion23E, and the fourth portion24E, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22D, the third portion23D, and the fourth portion24D, on the side of the fourth face34in the x-direction.

The lead2F is spaced apart from the plurality of leads1. The lead2F is located on the conductive section5. The lead2F is electrically connected to the conductive section5. The lead2F exemplifies a second lead in the present disclosure. The lead2F is bonded to the second portion52F of the wiring50F in the conductive section5, via the conductive bonding material82.

The configuration of the lead2F is not specifically limited. In this embodiment the lead2F includes, as shown inFIG. 15, a first portion21F, a second portion22F, a third portion23F, and a fourth portion24F, each of which will be described hereunder.

The first portion21F is bonded to the second portion52F of the wiring50F. The shape of the first portion21F is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21F has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21F overlaps with the second portion52F, as viewed in the z-direction. In addition, the first portion21F includes a through hole211F. The through hole211F is formed so as to penetrate through the first portion21F, in the z-direction. The inside of the through hole211F is filled with the conductive bonding material82, like the through hole211E in the first portion21E of the lead2E shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2F. However, the conductive bonding material82may be provided only inside the through hole211F, so as not to reach the surface of the lead2F.

The third portion23F and the fourth portion24F are covered with the encapsulating resin7. The third portion23F is connected to the first portion21F and the fourth portion24F. The fourth portion24F is shifted in the z-direction with respect to the first portion21F, to the side to which the first face31is oriented, like the third portion23E and the fourth portion24E of the lead2E shown inFIG. 5. The end portion of the fourth portion24F is flush with the sixth face75of the resin7. In the illustrated example, the first portion21F, the third portion23F, and the fourth portion24F generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21F, third portion23F, or fourth portion24F in the x-direction). The third portion23F overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22F is connected to the end portion of the fourth portion24F, and corresponds to a portion of the lead2F sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22F sticks out to the opposite side of the first portion21F, in the y-direction. The second portion22F is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22F is bent in the z-direction, to the side to which the first face31is oriented. The second portion22F, the third portion23F, and the fourth portion24F each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22F, the third portion23F, and the fourth portion24F, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22E, the third portion23E, and the fourth portion24E, on the side of the fourth face34in the x-direction.

The lead2G is spaced apart from the plurality of leads1. The lead2G is located on the conductive section5. The lead2G is electrically connected to the conductive section5. The lead2G exemplifies a second lead in the present disclosure. The lead2G is bonded to the second portion52G of the wiring50G in the conductive section5, via the conductive bonding material82.

The configuration of the lead2G is not specifically limited. In this embodiment the lead2G includes, as shown inFIG. 15, a first portion21G, a second portion22G, a third portion23G, and a fourth portion24G, each of which will be described hereunder.

The first portion21G is bonded to the second portion52G of the wiring50G. The shape of the first portion21G is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21G has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21G overlaps with the second portion52G, as viewed in the z-direction. In addition, the first portion21G includes a through hole211G. The through hole211G is formed so as to penetrate through the first portion21G, in the z-direction. The inside of the through hole211G is filled with the conductive bonding material82, like the through hole211F in the first portion21F of the lead2F shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2G. However, the conductive bonding material82may be provided only inside the through hole211G, so as not to reach the surface of the lead2G.

The third portion23G and the fourth portion24G are covered with the encapsulating resin7. The third portion23G is connected to the first portion21G and the fourth portion24G. The fourth portion24G is shifted in the z-direction with respect to the first portion21G, to the side to which the first face31is oriented, like the third portion23F and the fourth portion24F of the lead2F shown inFIG. 5. The end portion of the fourth portion24G is flush with the sixth face75of the resin7. In the illustrated example, the first portion21G, the third portion23G, and the fourth portion24G generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21G, third portion23G, or fourth portion24G in the x-direction). The third portion23G overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22G is connected to the end portion of the fourth portion24G, and corresponds to a portion of the lead2G sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22G sticks out to the opposite side of the first portion21G, in the y-direction. The second portion22G is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22G is bent in the z-direction, to the side to which the first face31is oriented. The second portion22G, the third portion23G, and the fourth portion24G each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22G, the third portion23G, and the fourth portion24G, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22F, the third portion23F, and the fourth portion24F, on the side of the fourth face34in the x-direction.

The lead2H is spaced apart from the plurality of leads1. The lead2H is located on the conductive section5. The lead2H is electrically connected to the conductive section5. The lead2H exemplifies a second lead in the present disclosure. The lead2H is bonded to the second portion52H of the wiring50H in the conductive section5, via the conductive bonding material82.

The configuration of the lead2H is not specifically limited. In this embodiment the lead2H includes, as shown inFIG. 15, a first portion21H, a second portion22H, a third portion23H, and a fourth portion24H, each of which will be described hereunder.

The first portion21H is bonded to the second portion52H of the wiring50H. The shape of the first portion21H is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21H has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21H overlaps with the second portion52H, as viewed in the z-direction. In addition, the first portion21H includes a through hole211H. The through hole211H is formed so as to penetrate through the first portion21H, in the z-direction. The inside of the through hole211H is filled with the conductive bonding material82, like the through hole211G in the first portion21G of the lead2G shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2H. However, the conductive bonding material82may be provided only inside the through hole211H, so as not to reach the surface of the lead2H.

The third portion23H and the fourth portion24H are covered with the encapsulating resin7. The third portion23H is connected to the first portion21H and the fourth portion24H. The fourth portion24H is shifted in the z-direction with respect to the first portion21H, to the side to which the first face31is oriented, like the third portion23G and the fourth portion24G of the lead2G shown inFIG. 5. The end portion of the fourth portion24H is flush with the sixth face75of the resin7. In the illustrated example, the first portion21H, the third portion23H, and the fourth portion24H generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21H, third portion23H, or fourth portion24H in the x-direction). The third portion23H overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22H is connected to the end portion of the fourth portion24H, and corresponds to a portion of the lead2H sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22H sticks out to the opposite side of the first portion21H, in the y-direction. The second portion22H is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22H is bent in the z-direction, to the side to which the first face31is oriented. The second portion22H, the third portion23H, and the fourth portion24H each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22H, the third portion23H, and the fourth portion24H, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22G, the third portion23G, and the fourth portion24G, on the side of the fourth face34in the x-direction.

The lead2I is spaced apart from the plurality of leads1. The lead2I is located on the conductive section5. The lead2I is electrically connected to the conductive section5. The lead2I exemplifies a second lead in the present disclosure. The lead2I is bonded to the second portion52I of the wiring50I in the conductive section5, via the conductive bonding material82.

The configuration of the lead2I is not specifically limited. In this embodiment the lead2I includes, as shown inFIG. 15, a first portion21I, a second portion22I, a third portion23I, and a fourth portion24I, each of which will be described hereunder.

The first portion21I is bonded to the second portion52I of the wiring50I. The shape of the first portion21I is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21I has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21I overlaps with the second portion52I, as viewed in the z-direction. In addition, the first portion21I includes a through hole211I. The through hole211I is formed so as to penetrate through the first portion21I, in the z-direction. The inside of the through hole211I is filled with the conductive bonding material82, like the through hole211H in the first portion21H of the lead2H shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2I. However, the conductive bonding material82may be provided only inside the through hole211I, so as not to reach the surface of the lead2I.

The third portion23I and the fourth portion24I are covered with the encapsulating resin7. The third portion23I is connected to the first portion21I and the fourth portion24I. The fourth portion24I is shifted in the z-direction with respect to the first portion21I, to the side to which the first face31is oriented, like the third portion23H and the fourth portion24H of the lead2H shown inFIG. 5. The end portion of the fourth portion24I is flush with the sixth face75of the resin7. In the illustrated example, the first portion21I, the third portion23I, and the fourth portion24I generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21I, third portion23I, or fourth portion24I in the x-direction). The third portion23I overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22I is connected to the end portion of the fourth portion24I, and corresponds to a portion of the lead2I sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22I sticks out to the opposite side of the first portion21I, in the y-direction. The second portion22I is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22I is bent in the z-direction, to the side to which the first face31is oriented. The second portion22I, the third portion23I, and the fourth portion24I each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22I, the third portion23I, and the fourth portion24I, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22H, the third portion23H, and the fourth portion24H, on the side of the fourth face34in the x-direction.

The lead2J is spaced apart from the plurality of leads1. The lead2J is located on the conductive section5. The lead2J is electrically connected to the conductive section5. The lead2J exemplifies a second lead in the present disclosure. The lead2J is bonded to the second portion52J of the wiring50J in the conductive section5, via the conductive bonding material82.

The configuration of the lead2J is not specifically limited. In this embodiment the lead2J includes, as shown inFIG. 15, a first portion21J, a second portion22J, a third portion23J, and a fourth portion24J, each of which will be described hereunder.

The first portion21J is bonded to the second portion52J of the wiring50J. The shape of the first portion21J is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21J has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21J overlaps with the second portion52J, as viewed in the z-direction. In addition, the first portion21J includes a through hole211J. The through hole211J is formed so as to penetrate through the first portion21J, in the z-direction. The inside of the through hole211J is filled with the conductive bonding material82, like the through hole211I in the first portion21I of the lead2I shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2J. However, the conductive bonding material82may be provided only inside the through hole211J, so as not to reach the surface of the lead2J.

The third portion23J and the fourth portion24J are covered with the encapsulating resin7. The third portion23J is connected to the first portion21J and the fourth portion24J. The fourth portion24J is shifted in the z-direction with respect to the first portion21J, to the side to which the first face31is oriented, like the third portion23I and the fourth portion24I of the lead2I shown inFIG. 5. The end portion of the fourth portion24J is flush with the sixth face75of the resin7. In the illustrated example, the first portion21J, the third portion23J, and the fourth portion24J generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21J, third portion23J, or fourth portion24J in the x-direction). The third portion23J overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22J is connected to the end portion of the fourth portion24J, and corresponds to a portion of the lead2J sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22J sticks out to the opposite side of the first portion21J, in the y-direction. The second portion22J is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22J is bent in the z-direction, to the side to which the first face31is oriented. The second portion22J, the third portion23J, and the fourth portion24J each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22J, the third portion23J, and the fourth portion24J, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22I, the third portion23I, and the fourth portion24I, on the side of the fourth face34in the x-direction.

The lead2K is spaced apart from the plurality of leads1. The lead2K is located on the conductive section5. The lead2K is electrically connected to the conductive section5. The lead2K exemplifies a second lead in the present disclosure. The lead2K is bonded to the second portion52K of the wiring50K in the conductive section5, via the conductive bonding material82.

The configuration of the lead2K is not specifically limited. In this embodiment the lead2K includes, as shown inFIG. 15, a first portion21K, a second portion22K, a third portion23K, and a fourth portion24K, each of which will be described hereunder.

The first portion21K is bonded to the second portion52K of the wiring50K. The shape of the first portion21K is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21K has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21K overlaps with the second portion52K, as viewed in the z-direction. In addition, the first portion21K includes a through hole211K. The through hole211K is formed so as to penetrate through the first portion21K, in the z-direction. The inside of the through hole211K is filled with the conductive bonding material82, like the through hole211J in the first portion21J of the lead2J shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2K. However, the conductive bonding material82may be provided only inside the through hole211K, so as not to reach the surface of the lead2K.

The third portion23K and the fourth portion24K are covered with the encapsulating resin7. The third portion23K is connected to the first portion21K and the fourth portion24K. The fourth portion24K is shifted in the z-direction with respect to the first portion21K, to the side to which the first face31is oriented, like the third portion23J and the fourth portion24J of the lead2J shown inFIG. 5. The end portion of the fourth portion24K is flush with the sixth face75of the resin7. In the illustrated example, the first portion21K, the third portion23K, and the fourth portion24K generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21K, third portion23K, or fourth portion24K in the x-direction). The third portion23K overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22K is connected to the end portion of the fourth portion24K, and corresponds to a portion of the lead2K sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22K sticks out to the opposite side of the first portion21K, in the y-direction. The second portion22K is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22K is bent in the z-direction, to the side to which the first face31is oriented. The second portion22K, the third portion23K, and the fourth portion24K each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22K, the third portion23K, and the fourth portion24K, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22J, the third portion23J, and the fourth portion24J, on the side of the fourth face34in the x-direction.

The lead2L is spaced apart from the plurality of leads1. The lead2L is located on the conductive section5. The lead2L is electrically connected to the conductive section5. The lead2L exemplifies a second lead in the present disclosure. The lead2L is bonded to the second portion52L of the wiring50L in the conductive section5, via the conductive bonding material82.

The configuration of the lead2L is not specifically limited. In this embodiment the lead2L includes, as shown inFIG. 15, a first portion21L, a second portion22L, a third portion23L, and a fourth portion24L, each of which will be described hereunder.

The first portion21L is bonded to the second portion52L of the wiring50L. The shape of the first portion21L is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21L has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21L overlaps with the second portion52L, as viewed in the z-direction. In addition, the first portion21L includes a through hole211L. The through hole211L is formed so as to penetrate through the first portion21L, in the z-direction. The inside of the through hole211L is filled with the conductive bonding material82, like the through hole211K in the first portion21K of the lead2K shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2L. However, the conductive bonding material82may be provided only inside the through hole211L, so as not to reach the surface of the lead2L.

The third portion23L and the fourth portion24L are covered with the encapsulating resin7. The third portion23L is connected to the first portion21L and the fourth portion24L. The fourth portion24L is shifted in the z-direction with respect to the first portion21L, to the side to which the first face31is oriented, like the third portion23K and the fourth portion24K of the lead2K shown inFIG. 5. The end portion of the fourth portion24L is flush with the sixth face75of the resin7. In the illustrated example, the first portion21L, the third portion23L, and the fourth portion24L generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21L, third portion23L, or fourth portion24L in the x-direction). The third portion23L overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22L is connected to the end portion of the fourth portion24L, and corresponds to a portion of the lead2L sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22L sticks out to the opposite side of the first portion21L, in the y-direction. The second portion22L is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22L is bent in the z-direction, to the side to which the first face31is oriented. The second portion22L, the third portion23L, and the fourth portion24L each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22L, the third portion23L, and the fourth portion24L, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22K, the third portion23K, and the fourth portion24K, on the side of the fourth face34in the x-direction.

The lead2M is spaced apart from the plurality of leads1. The lead2M is located on the conductive section5. The lead2M is electrically connected to the conductive section5. The lead2M exemplifies a second lead in the present disclosure. The lead2M is bonded to the second portion52M of the wiring50M in the conductive section5, via the conductive bonding material82.

The configuration of the lead2M is not specifically limited. In this embodiment the lead2M includes, as shown inFIG. 15, a first portion21M, a second portion22M, a third portion23M, and a fourth portion24M, each of which will be described hereunder.

The first portion21M is bonded to the second portion52M of the wiring50M. The shape of the first portion21M is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21M has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21M overlaps with the second portion52M, as viewed in the z-direction. In addition, the first portion21M includes a through hole211M. The through hole211M is formed so as to penetrate through the first portion21M, in the z-direction. The inside of the through hole211M is filled with the conductive bonding material82, like the through hole211L in the first portion21L of the lead2L shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2M. However, the conductive bonding material82may be provided only inside the through hole211M, so as not to reach the surface of the lead2M.

The third portion23M and the fourth portion24M are covered with the encapsulating resin7. The third portion23M is connected to the first portion21M and the fourth portion24M. The fourth portion24M is shifted in the z-direction with respect to the first portion21M, to the side to which the first face31is oriented, like the third portion23L and the fourth portion24L of the lead2L shown inFIG. 5. The end portion of the fourth portion24M is flush with the sixth face75of the resin7. In the illustrated example, the first portion21M, the third portion23M, and the fourth portion24M generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21M, third portion23M, or fourth portion24M in the x-direction). The third portion23M overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22M is connected to the end portion of the fourth portion24M, and corresponds to a portion of the lead2M sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22M sticks out to the opposite side of the first portion21M, in the y-direction. The second portion22M is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22M is bent in the z-direction, to the side to which the first face31is oriented. The second portion22M, the third portion23M, and the fourth portion24M each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22M, the third portion23M, and the fourth portion24M, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22L, the third portion23L, and the fourth portion24L, on the side of the fourth face34in the x-direction.

The lead2N is spaced apart from the plurality of leads1. The lead2N is located on the conductive section5. The lead2N is electrically connected to the conductive section5. The lead2N exemplifies a second lead in the present disclosure. The lead2N is bonded to the second portion52N of the wiring50N in the conductive section5, via the conductive bonding material82.

The configuration of the lead2N is not specifically limited. In this embodiment the lead2N includes, as shown inFIG. 15, a first portion21N, a second portion22N, a third portion23N, and a fourth portion24N, each of which will be described hereunder.

The first portion21N is bonded to the second portion52N of the wiring50N. The shape of the first portion21N is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21N has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21N overlaps with the second portion52N, as viewed in the z-direction. In addition, the first portion21N includes a through hole211N. The through hole211N is formed so as to penetrate through the first portion21N, in the z-direction. The inside of the through hole211N is filled with the conductive bonding material82, like the through hole211M in the first portion21M of the lead2M shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2N. However, the conductive bonding material82may be provided only inside the through hole211N, so as not to reach the surface of the lead2N.

The third portion23N and the fourth portion24N are covered with the encapsulating resin7. The third portion23N is connected to the first portion21N and the fourth portion24N. The fourth portion24N is shifted in the z-direction with respect to the first portion21N, to the side to which the first face31is oriented, like the third portion23M and the fourth portion24M of the lead2M shown inFIG. 5. The end portion of the fourth portion24N is flush with the sixth face75of the resin7. In the illustrated example, the first portion21N, the third portion23N, and the fourth portion24N generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21N, third portion23N, or fourth portion24N in the x-direction). The third portion23N overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22N is connected to the end portion of the fourth portion24N, and corresponds to a portion of the lead2N sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22N sticks out to the opposite side of the first portion21N, in the y-direction. The second portion22N is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22N is bent in the z-direction, to the side to which the first face31is oriented. The second portion22N, the third portion23N, and the fourth portion24N each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22N, the third portion23N, and the fourth portion24N, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22M, the third portion23M, and the fourth portion24M, on the side of the fourth face34in the x-direction.

The lead2O is spaced apart from the plurality of leads1. The lead2O is located on the conductive section5, as shown inFIG. 4andFIG. 15. The lead2O is electrically connected to the conductive section5. The lead2O is bonded to the second portion52O of the wiring50O in the conductive section5, via the conductive bonding material82.

The configuration of the lead2O is not specifically limited. In this embodiment the lead2O includes, as shown inFIG. 4andFIG. 15, a first portion21O, a second portion22O, a third portion23O, a fourth portion24O, and a fifth portion25O, each of which will be described hereunder.

The first portion21O is bonded to the second portion52O of the wiring50O. The shape of the first portion21O is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21O has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21O overlaps with the second portion52O, as viewed in the z-direction. In addition, the first portion21O includes a through hole211O. The through hole211O is formed so as to penetrate through the first portion21O, in the z-direction. The inside of the through hole211O is filled with the conductive bonding material82, like the through hole211C in the first portion21C of the lead2C shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2O. However, the conductive bonding material82may be provided only inside the through hole211O, so as not to reach the surface of the lead2O.

The third portion23O, the fourth portion24O, and the fifth portion25O are covered with the encapsulating resin7. The fifth portion25O is connected to the first portion21O and the third portion23O. In the illustrated example, the fifth portion25O includes a portion extending along the y-direction and a portion inclined with respect to the y-direction. The third portion23O is connected to the fourth portion24O and the fifth portion25O. The fifth portion25O overlaps with the fourth face34of the substrate3, as viewed in the z-direction. The fourth portion24O is shifted in the z-direction with respect to the first portion21O, to the side to which the first face31is oriented, like the third portion23C and the fourth portion24C of the lead2C shown inFIG. 5. The end portion of the fourth portion24O is flush with the sixth face75of the resin7.

The second portion22O is connected to the end portion of the fourth portion24O, and corresponds to a portion of the lead2O sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22O sticks out to the opposite side of the first portion21O, in the y-direction. The second portion22O is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22O is bent in the z-direction, to the side to which the first face31is oriented. The second portion22O, the third portion23O, and the fourth portion24O each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22O, the third portion23O, and the fourth portion24O, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22N, the third portion23N, and the fourth portion24N, on the side of the fourth face34in the x-direction.

The lead2P is spaced apart from the plurality of leads1. The lead2P is located on the conductive section5, as shown inFIG. 4andFIG. 15. The lead2P is electrically connected to the conductive section5. The lead2P is bonded to the second portion52P of the wiring50P in the conductive section5, via the conductive bonding material82.

The configuration of the lead2P is not specifically limited. In this embodiment the lead2P includes, as shown inFIG. 4andFIG. 15, a first portion21P, a second portion22P, a third portion23P, a fourth portion24P, and a fifth portion25P, each of which will be described hereunder.

The first portion21P is bonded to the second portion52P of the wiring50P. The shape of the first portion21P is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21P has an elongate rectangular shape, having the long sides extending along the y-direction. In the illustrated example, the first portion21P overlaps with the second portion52P, as viewed in the z-direction. In addition, the first portion21P includes a through hole211P. The through hole211P is formed so as to penetrate through the first portion21P, in the z-direction. The inside of the through hole211P is filled with the conductive bonding material82, like the through hole211C in the first portion21C of the lead2C shown inFIG. 5. The conductive bonding material82covers a part of the surface of the lead2P. However, the conductive bonding material82may be provided only inside the through hole211P, so as not to reach the surface of the lead2P.

The third portion23P, the fourth portion24P, and the fifth portion25P are covered with the encapsulating resin7. The fifth portion25P is connected to the first portion21P and the third portion23P. In the illustrated example, the fifth portion25P includes a portion extending along the y-direction and a portion inclined with respect to the y-direction. The fifth portion25P overlaps with the fourth face34of the substrate3, as viewed in the z-direction. The third portion23P is connected to the fourth portion24P and the fifth portion25P. The fourth portion24P is shifted in the z-direction with respect to the first portion21P, to the side to which the first face31is oriented, like the third portion23C and the fourth portion24C of the lead2C shown inFIG. 5. The end portion of the fourth portion24P is flush with the sixth face75of the resin7.

The second portion22P is connected to the end portion of the fourth portion24P, and corresponds to a portion of the lead2P sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22P sticks out to the opposite side of the first portion21P, in the y-direction. The second portion22P is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22P is bent in the z-direction, to the side to which the first face31is oriented. The second portion22P, the third portion23P, and the fourth portion24P each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22P, the third portion23P, and the fourth portion24P, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22O, the third portion23O, and the fourth portion24O, on the side of the fourth face34in the x-direction.

The lead2Z is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead2Z is located on the side to which the third face33is oriented, with respect to the substrate3in the x-direction. In addition, the lead2Z is located on the opposite side of the lead2B, with respect to the lead2A in the x-direction.

The configuration of the lead2Z is not specifically limited. In this embodiment the lead2Z includes, as shown inFIG. 4, a second portion22Z and a fourth portion24Z, each of which will be described hereunder. In this embodiment, the lead2Z is insulated from the circuit of the semiconductor device A1.

The fourth portion24Z is connected to the second portion22Z, and covered with the encapsulating resin7. The fourth portion24Z is, like the fourth portion24C of the lead2C, shifted from the first portion21A in the z-direction, to the side to which the first face31is oriented. The shape of the fourth portion24Z is not specifically limited and, in the illustrated example, the fourth portion24Z has a strip shape extending along the y-direction. The end portion of the fourth portion24Z is flush with the sixth face75of the resin7.

The second portion22Z is connected to the end portion of the fourth portion24Z, and corresponds to a portion of the lead2Z sticking out from the encapsulating resin7. The second portion22Z sticks out to the opposite side of the fourth portion24Z, in the y-direction. The second portion22Z is used, for example, when the semiconductor device A1is mounted on an external circuit board. In the illustrated example, the second portion22Z is bent in the z-direction, to the side to which the first face31is oriented.

As shown inFIG. 4andFIG. 15, the second portions22A,22B, and22C are aligned in the x-direction, with clearances G21. The clearances G21have generally the same width, with a difference within ±5% from each other. The second portion22C and the second portion22D are aligned in the x-direction, with a clearance G22therebetween. The clearance G22has generally the same width as the clearance G21, with a difference within ±5% from each other. The second portions22D to22N are aligned in the x-direction, with clearances G23between each other. The clearances G23are narrower than the clearances G21, and the difference in length among the plurality of clearances G23is within ±5%. The second portion22A and the second portion22Z are aligned in the x-direction, with a clearance G24therebetween. The clearance G24is different from the clearance G21, by within ±5%. In addition, the clearance G23is narrower than the clearance G54shown inFIG. 16.

The semiconductor chips4A to4F, located on the plurality of leads1, each exemplify a semiconductor chip in the present disclosure. The type and the function of the semiconductor chips4A to4F are not specifically limited. In this embodiment, the semiconductor chips4A to4F are a transistor. Although six semiconductor chips4A to4F are provided in the illustrated example, the number of semiconductor chips is by no means limited.

The semiconductor chips4A to4F in the illustrated example are, for example, a metal-oxide-semiconductor field-effect transistor (MOSFET) formed on a silicon carbide (SiC) substrate, in other words SiC MOSFET. Here, the semiconductor chips4A to4F may be a MOSFET formed on a silicon (Si) substrate instead of the SiC substrate, and may be configured as, for example, an IGBT element. Alternatively, the semiconductor chips4A to4F may be a MOSFET containing GaN. In this embodiment, each of the semiconductor chips4A to4F is an N-type MOSFET. The semiconductor chips4A to4F according to this embodiment are the same MOSFET as each other. Hereunder, the semiconductor chip4A will be described as an example, and the description of the remaining semiconductor chips4B to4F will be omitted.

As shown inFIG. 4,FIG. 5, andFIG. 9, the semiconductor chip4A is located on the first portion11A of the lead1A. The semiconductor chip4A includes a gate electrode GP, a source electrode SP, and a drain electrode DP. In the illustrated example, the source electrode SP and the gate electrode GP are located on the face of the semiconductor chip4A oriented in the same direction as the main surface111A. The drain electrode DP is formed on the face of the semiconductor chip4A opposed to the main surface111A. The gate electrode GP and the source electrode SP are formed of, for example, Al or an Al alloy (e.g., Al—Si, Al—Cu, and Al—Si—Cu). The drain electrode DP is formed of, for example, Al or an Al alloy (e.g., Al—Si, Al—Cu, and Al—Si—Cu). The shape and size of the gate electrode GP, the source electrode SP, and the drain electrode DP are not specifically limited. In the illustrated example, the source electrode SP is larger than the gate electrode GP, as viewed in the z-direction. The gate electrode GP is located on the side of the fifth face of the substrate3, with respect to the center of the semiconductor chip4A in the y-direction, as viewed in the z-direction. The source electrode SP includes a portion located on one side of the gate electrode GP in the y-direction, and on both sides thereof in the x-direction. Here, the position of the gate electrode GP with respect to the source electrode SP is not specifically limited. The gate electrode GP may be formed in a square shape. The source electrode SP includes a recess formed on the side opposed to the fifth face35, and the gate electrode GP is located inside the recess.

FIG. 17is an enlarged partial cross-sectional view schematically showing the semiconductor chip4A. The semiconductor chip4A according to this embodiment includes a substrate400, an epitaxial layer401, a source interconnect411, a drain interconnect415, and a gate interconnect419.

The substrate400is formed of silicon carbide (SiC), and doped with an n-type impurity in high concentration (e.g., 1e18 to 1e21 cm−3). The substrate400includes a front surface400A and a back surface400B. The front surface400A is a Si surface, and the back surface400B is a C surface.

The epitaxial layer401is stacked on the front surface400A of the substrate400. The epitaxial layer401is an n−-type layer formed of SiC doped with the n-type impurity in low concentration than the substrate400. The epitaxial layer401is formed through what is known as epitaxial growth, on the substrate400. The epitaxial layer401formed on the front surface400A, which is a Si surface, grows utilizing the Si surface as the main growth surface. Accordingly, a surface401A of the epitaxial layer401formed through the growth is also a Si surface, like the front surface400A of the substrate400.

The epitaxial layer401includes a drain region402, a body region403, a source region407, and a body contact region408.

The drain region402corresponds to the portion on the side of the C surface (base portion), opposite to the surface401A. The drain region402is an n−-type region, the entirety of which is maintained in the state after the epitaxial growth as it is. The n-type impurity concentration of the drain region402is, for example, 1e15 to 1e17 cm−3.

The body region403is formed on the side of the surface401A of the epitaxial layer401. The body region403is in contact with the drain region402, from the side of the surface401A (Si surface) of the epitaxial layer401. The p-type impurity concentration of the body region403is, for example, 1e16 to 1e19 cm−3.

The epitaxial layer401includes a gate trench404. The gate trench404is formed so as to recede from the surface401A. Though not shown inFIG. 17, a plurality of gate trenches404are formed at certain intervals between each other, so as to extend in the same direction parallel to each other (direction perpendicular to the sheet face ofFIG. 17, which may hereinafter be referred to as “direction along the gate width”), for example in a stripe pattern.

The gate trenches404each include two side faces404aand a bottom face404b. The two side faces404aare opposed to each other with a clearance therebetween, and both are orthogonal to the surface401A. The bottom face404bis connected to the two side faces404a, and includes a section parallel to the surface401A. The gate trench404is formed so as to penetrate through the body region403in the layer thickness direction, such that a deepest portion (bottom face404b) reaches the drain region402.

A gate insulation film405is formed on the inner surface of the gate trench404and the surface401A of the epitaxial layer401, so as to cover the entirety of the inner surface of the gate trench404(side face404aand bottom face404b). The gate insulation film405is formed of an oxide film containing nitrogen (N), such as a silicon oxynitride film formed by thermal oxidation using a nitride-containing gas. The nitrogen content (nitrogen concentration) in the gate insulation film405is, for example, 0.1 to 10%.

The gate insulation film405includes an insulation film side portion405aand an insulation film bottom portion405b. The insulation film side portion405ais provided over the side face404aof the gate trench404. The insulation film bottom portion405bis provided over the bottom face404bof the gate trench404. In the illustrated example, the thickness T2of the insulation film bottom portion405bis equal to or thinner than the thickness T1of the insulation film side portion405a. More specifically, the ratio of the thickness T2of the insulation film bottom portion405bto the thickness T1of the insulation film side portion405a(thickness T2of insulation film bottom portion405b/thickness T1of insulation film side portion405a) is 0.3 to 1.0, and more preferably 0.5 to 1.0. The thickness T1of the insulation film side portion405ais, for example, 300 to 1000 Å, and the thickness T2of insulation film bottom portion405bis, for example, 150 to 500 Å.

A gate electrode405is buried inside the gate insulation film405, The gate electrode405is formed by entirely filling the inside of the gate insulation film405with a polysilicon material doped with an N-type impurity in high concentration.

The source region407is located in an upper portion of the body region403, and on both sides of the gate trench404in the direction orthogonal to the gate width (left-right direction inFIG. 17), and is an n+-type region. The source region407is doped with the n-type impurity in higher concentration than the n-type impurity concentration of the drain region402. The n-type impurity concentration of the source region407is, for example, 1e18 to 1e21 cm−3. The source region407extends along the gate width direction, at the position adjacent to the gate trench404.

The body contact region408penetrates through the central portion of the source region407in the direction orthogonal to the gate width, from the surface401A, and is a p+-type region connected to the body region403. The body contact region408is doped with the p-type impurity in higher concentration than the p-type impurity concentration of the body region403. The p-type impurity concentration of the body contact region408is, for example, 1e18 to 1e21 cm−3.

The gate trench404and the source region407are alternately provided in the direction orthogonal to the gate width, and each extend along the gate width direction. Boundaries between unit cells, located adjacent to each other in the direction orthogonal to the gate width along the source region407, are provided on the source region407. At least one body contact region408is provided so as to span over the two unit cells located adjacent to each other in the direction orthogonal to the gate width. In addition, the boundary between the unit cells adjacent to each other along the direction of the gate width is provided such that a certain gate width is secured for the gate electrodes405of the respective unit cells.

An interlayer dielectric film409formed of silicon oxide (SiO2) is stacked on the epitaxial layer401. The interlayer dielectric film409and the gate insulation film405each include a contact hole410, in which the surfaces of the source region407and the body contact region408are exposed.

The source interconnect411is formed on the interlayer dielectric film409. The source interconnect411is brought into contact with (electrically connected to) the source region407and the body contact region408, via the contact hole410. The source interconnect411includes a polysilicon layer412, a metal layer413, and an intermediate layer414.

The polysilicon layer412is in contact with the source region407and the body contact region408. The polysilicon layer412is a doped layer formed of polysilicon doped with an impurity, and preferably a high-concentration doped layer, doped with an impurity in concentration as high as, for example, 1e19 to 1e21 cm−3. Examples of the impurity that may be employed to form the polysilicon layer412as a doped layer (high-concentration doped layer inclusive) include an N-type impurity such as phosphor (P) or arsenic (As), and a p-type impurity such as boron (B). In addition, the polysilicon layer412covers the entirety of the contact hole410. The thickness of the polysilicon layer412formed as above is, for example, 500 to 1000 Å, depending on the depth of the contact hole410.

The metal layer413is formed over the polysilicon layer412. The metal layer413is, for example, formed of aluminum (Al), gold (Au), silver (Ag), copper (Cu), an alloy thereof, or a metal material containing the cited metals. The metal layer413constitutes the outermost layer of the source interconnect411and, for example, the first wire91A is connected (bonded) to the metal layer413. The thickness of the metal layer413is, for example, 1 to 5 μm.

The intermediate layer414is interleaved between the polysilicon layer412and the metal layer413, and contains titanium (Ti). The intermediate layer414is formed of a layer containing titanium, or a plurality of layers including the mentioned layer. The layer containing titanium can be formed from titanium or titanium nitride (TiN). The thickness of the intermediate layer414is, for example, 200 to 500 nm.

Preferably, the source interconnect411including the polysilicon layer412, the intermediate layer414, and the metal layer413formed as above, may have a layered structure in which polysilicon (polysilicon layer412), titanium (intermediate layer414), titanium nitride (intermediate layer414), and aluminum (metal layer413) are sequentially stacked (Po—Si/Ti/TiN/Al).

The drain interconnect415is formed on the back surface4003of the substrate400. The drain interconnect415is in contact with (electrically connected to) the substrate400. The drain interconnect415includes a polysilicon layer416, a metal layer417, and an intermediate layer418.

The polysilicon layer416is in contact with the substrate400. The polysilicon layer416may be formed of the material similar to that of the polysilicon layer412. The thickness of the polysilicon layer416is, for example, 1000 to 2000 Å.

The metal layer417is formed over the polysilicon layer416. The metal layer417may be formed of the material similar to that of the metal layer413. The metal layer417constitutes the outermost layer of the drain interconnect415, and is bonded to the first portion11A, for example when the substrate400is mounted on the first portion11A of the lead1A. The thickness of the metal layer417is, for example, 0.5 to 1 μm.

The intermediate layer418is interleaved between the polysilicon layer416and the metal layer417, and contains titanium (Ti). The intermediate layer418may be formed of the material similar to that of the intermediate layer414.

The gate interconnect419is in contact with (electrically connected to) the gate electrode406, via a contact hole (not shown) formed in the interlayer dielectric film409. When a predetermined voltage (equal to or higher than a gate threshold voltage) is applied to the gate interconnect419, with a predetermined potential difference generated between the source interconnect411and the drain interconnect415(between source-drain), a channel is formed in the vicinity of the interface between the body region403and the gate insulation film405, by the electric field from the gate electrode406. Accordingly, a current flows between the source interconnect411and the drain interconnect415, so that the semiconductor chip4A is turned on.

In this embodiment, as shown inFIG. 4,FIG. 5,FIG. 9, andFIG. 10, three semiconductor chips4A,4B, and4C are provided on the main surface111A of the first portion11A of the lead1A. The three semiconductor chips4A,4B, and4C are spaced apart from each other in the x-direction, and overlap with each other as viewed in the x-direction. Here, the number of semiconductor chips to be mounted on the lead1A is by no means limited. In a plan view, the three semiconductor chips4A,4B, and4C are each located in a region of the main surface111A surrounded by the groove1112A. In the illustrated example, the semiconductor chips4A,4B, and4C are arranged such that, as viewed in the z-direction, the respective gate electrodes GP are located on the side of the plurality of leads2, with respect to the center of the semiconductor chips4A,4B, and4C in the y-direction. In the illustrated example, in addition, the respective drain electrodes DP of the semiconductor chips4A,4B, and4C are bonded to the main surface111A, via the conductive bonding material83.

The conductive bonding material83may be any material that is capable of bonding, and electrically connecting, the drain electrode DP of the semiconductor chips4A,4B, and4C, to the main surface111A. For example, silver paste, copper paste, or solder may be employed as the conductive bonding material83. The conductive bonding material83corresponds to the second conductive bonding material in the present disclosure. In this embodiment, the conductive bonding material83extends outwardly from the outer periphery of the semiconductor chips4A,4B, and4C, in a plan view. A reason of such a configuration is that, for example, when the conductive bonding material83performs the bonding function by curing after the fused state, the conductive bonding material83is apt to be formed in contact with the edge of the groove1112A, as shown inFIG. 6. This is because the surface tension of the fused conductive bonding material83, generated at the edge of the groove1112A when the conductive bonding material83is about to spread around, prevents the conductive bonding material83from spreading further.

In this embodiment, as shown inFIG. 4,FIG. 5,FIG. 9, andFIG. 14, the semiconductor chip4D is provided on the main surface111B of the first portion11B of the lead1B. Here, the number of semiconductor chips to be mounted on the lead1B is by no means limited. The semiconductor chip4D is located in a region of the main surface111B surrounded by the groove1112B, in a plan view. In the illustrated example, the semiconductor chip4D is arranged such that, as viewed in the z-direction, the gate electrode GP is located on the side of the plurality of leads2, with respect to the center of the semiconductor chip4D in the y-direction. In the illustrated example, in addition, the drain electrode DP of the semiconductor chip4D is bonded to the main surface111B, via the conductive bonding material83.

In this embodiment, as shown inFIG. 4,FIG. 5,FIG. 9, andFIG. 14, the semiconductor chip4E is provided on the main surface111C of the first portion11C of the lead1C. Here, the number of semiconductor chips to be mounted on the lead1C is by no means limited. The semiconductor chip4E is located in a region of the main surface111C surrounded by the groove1112C, in a plan view. In the illustrated example, the semiconductor chip4E is arranged such that, as viewed in the z-direction, the gate electrode GP is located on the side of the plurality of leads2, with respect to the center of the semiconductor chip4E in the y-direction. In the illustrated example, in addition, the drain electrode DP of the semiconductor chip4E is bonded to the main surface111C, via the conductive bonding material83.

In this embodiment, as shown inFIG. 4,FIG. 5,FIG. 9, andFIG. 14, the semiconductor chip4F is provided on the main surface111D of the first portion11D of the lead1D. Here, the number of semiconductor chips to be mounted on the lead1D is by no means limited. The semiconductor chip4F is located in a region of the main surface111D surrounded by the groove1112D, in a plan view. In the illustrated example, the semiconductor chip4F is arranged such that, as viewed in the z-direction, the gate electrode GP is located on the side of the plurality of leads2, with respect to the center of the semiconductor chip4F in the y-direction. In the illustrated example, in addition, the drain electrode DP of the semiconductor chip4F is bonded to the main surface111D, via the conductive bonding material83. In the illustrated example, as shown inFIG. 4, the semiconductor chip4C and the semiconductor chip4D overlap with the connecting portion57of the conductive section5, as viewed in the y-direction. As shown inFIG. 5, the semiconductor chip43is located on the side of the substrate3with respect to the upper face of the fourth portion14A, in the z-direction.

The control chips4G and4H serve to control the operation of at least one of the semiconductor chips4A to4F. As shown inFIG. 4andFIG. 15, the control chips4G and4H are electrically connected to the conductive section5and at least one of the semiconductor chips4A to4F, and provided on the substrate3. In this embodiment, the control chip4G controls the operation of three semiconductor chips4A,4B, and4C. The control chip4H controls the operation of three semiconductor chips4D,4E, and4F. The shape and size of the control chips4G and4H are not specifically limited. In the illustrated example, the control chips4G and4H have an elongate rectangular shape, having the long sides extending along the x-direction, as viewed in the z-direction.

In this embodiment, the control chip4G is mounted on the first base portion55of the conductive section5. The control chip4H is mounted on the second base portion55of the conductive section5. In this embodiment, the control chip4G is bonded to the first base portion55, via a conductive bonding material84. The control chip4H is bonded to the second base portion55, via the conductive bonding material84.

The conductive bonding material84may be any material that is capable of bonding, and electrically connecting, the control chip4G to the first base portion55, and the control chip4H to the second base portion55. For example, silver paste, copper paste, or solder may be employed as the conductive bonding material84. The conductive bonding material84corresponds to the third conductive material in the present disclosure. In this embodiment, the conductive bonding material84extends outwardly from the outer periphery of the control chips4G and4H, in a plan view. A reason of such a configuration is that, for example, when the conductive bonding material84performs the bonding function by curing after the fused state, the conductive bonding material84in the fused state spreads around the control chip4G (control chip4H) as viewed in the z-direction, as shown inFIG. 7. Therefore, in the illustrated example, the conductive bonding material84protrudes from the respective outer edges of the control chips4G and4H, as viewed in the z-direction. However, the specific shape of the conductive bonding material84is by no means limited. Here, the control chips4G and4H may be bonded to the first base portion55via an insulative bonding material, instead of the conductive bonding material84.

As shown inFIG. 4, the control chip4G is located between the leads2B to2O and the leads1A to1G, as viewed in the x-direction. The control chip4H is located between the leads2B to2O and the leads1A to1G, as viewed in the x-direction. The control chip4G overlaps with the semiconductor chip4B, as viewed in the y-direction. In the illustrated example, the control chip4G also overlaps with the semiconductor chip4A, as viewed in the y-direction. The control chip4H overlaps with the semiconductor chip4E, as viewed in the y-direction. The control chip4G may overlap with the semiconductor chip4C, as viewed in the y-direction. The control chip4H may overlap with either or both of the semiconductor chips4D and4F, as viewed in the y-direction.

As shown inFIG. 15andFIG. 16, in the illustrated example, the control chip4G overlaps with the wiring50B (first portion51B) and the wiring50C (first portion51C), as viewed in the y-direction. In addition, the control chip4G overlaps with the second base portion56and the control chip4H, as viewed in the x-direction. The control chip4H overlaps with the wiring50I (first portion51I), the wiring50J (first portion51J), wiring50K (first portion51K), and the wiring50L (first portion51L), as viewed in the y-direction. In addition, the control chip4H overlaps with the wiring50O (first portion51O) and the wiring50P (first portion51P), as viewed in the x-direction.

As shown inFIG. 5, the control chip4G is located on the side of the substrate3, with respect to the upper end of the fourth portion24C in the z-direction. Further, the control chip4G is located on the side of the substrate3, in other words on the lower side, with respect to the upper end of the first portion21C in the z-direction. The control chip4H is located on the side of the substrate3, with respect to the upper end of the fourth portion24C in the z-direction. Further, the control chip4H is located on the side of the substrate3, in other words on the lower side, with respect to the upper end of the first portion21C in the z-direction.

The diodes49U,49V, and49W are electrically connected to the control chip4G. In this embodiment, the diodes49U,49V, and49W each serve as what is known as a boot diode, to apply a higher voltage to the control chip4G. As shown inFIG. 4,FIG. 15, andFIG. 16, the diode49U is bonded to the first portion51A of the wiring50A of the conductive section5, via a conductive bonding material85. The conductive bonding material85is formed of, for example, a similar material to that of the conductive bonding material84. The conductive bonding material85extends outwardly from the outer periphery of the diodes49U,49V, and49W, in a plan view. A reason of such a configuration is that, for example, when the conductive bonding material85performs the bonding function by curing after the fused state, the conductive bonding material85of the fused phase spreads around the diode49W (also diode49U and diode49V) as viewed in the z-direction, as shown inFIG. 8. Therefore, in the illustrated example, the conductive bonding material85protrudes from the outer edge of the diode49U, as viewed in the z-direction. However, the specific shape of the conductive bonding material85is by no means limited.

As shown inFIG. 4,FIG. 15, andFIG. 16, the diode49V is bonded to the first portion51B of the wiring50B of the conductive section5, via the conductive bonding material85. The diode49W is bonded to the first portion51C of the wiring50C of the conductive section5, via the conductive bonding material85.

The actual positional arrangement of the diodes49U,49V, and49W is not specifically limited. As shown inFIG. 15andFIG. 16, in the illustrated example, the center of the diode49U in the x-direction is shifted to the side of the wiring50B (first portion51B), with respect to the center of the first portion51A in the x-direction. The center of the diode49U in the y-direction is shifted to the opposite side of the lead2A, with respect to the center of the first portion51A in the y-direction. The center of the diode49V in the x-direction is shifted to the side of the wiring50A (first portion51A), with respect to the center of the first portion51B in the x-direction. In addition, the center of the diode49V in the y-direction is shifted to the side of the lead2B, with respect to the center of the first portion51B in the y-direction. Further, the center of the diode49W in the x-direction is shifted to the side of the wiring50D (first portion51D), with respect to the center of the first portion51C in the x-direction. The center of the diode49W in the y-direction is shifted to the side of the lead2C, with respect to the center of the first portion51C in the y-direction.

As shown inFIG. 5, the diode49W is located on the side of the substrate3, in other words on the lower side, with respect to the upper end of the fourth portion24C in the z-direction. In addition, the diode49W is located on the side of the substrate3, in other words on the lower side, with respect to the upper end of the first portion21C in the z-direction. The mentioned positional relations also apply to the diodes49U and49V.

The first wires91A to91F are each connected to one of the semiconductor chips4A to4F and one of the plurality of leads1. The material of the first wires91A to91F is not specifically limited and, for example, aluminum (Al) or copper (Cu) may be employed. The wire diameter of the first wires91A to91F is not specifically limited and, for example, may be approximately 250 to 500 μm. The first wires91A to91F correspond to the first conductive material in the present disclosure. Here, for example leads formed of copper may be employed, in place of the first wires91A to91F.

As shown inFIG. 4, the first wire91A has one end connected to the source electrode SP of the semiconductor chip4A, and the other end connected to the fourth portion14B of the lead1B. The position on the source electrode SP and the fourth portion14B to which the first wire91A is to be connected is not specifically limited. As shown inFIG. 10, in the illustrated example, the one end of the first wire91A is connected to a position spaced apart from the center of the source electrode SP of the semiconductor chip4A in the y-direction, toward the opposite side of the gate electrode GP, as viewed in the z-direction. In addition, the first wire91A overlaps with the center of the source electrode SP of the semiconductor chip4A in the x-direction, as viewed in the y-direction. The first wire91A is inclined with respect to the x-direction and the y-direction.

As shown inFIG. 10, the first wires91A,91B, and91C respectively include end portions911A,911B, and911C. The end portion911A will be described hereunder, and the end portions911B and911C may be similarly formed to the end portion911A. This also applies to the first wires91D,91E, and91F.FIG. 11is an enlarged partial plan view showing an end portion of the first wire91A.FIG. 12is an enlarged partial cross-sectional view taken along a line XII-XII inFIG. 11.FIG. 13is an enlarged partial cross-sectional view taken along a line XIII-XIII inFIG. 11. The end portion911A is connected, for example, to the source electrode SP of the semiconductor chip4A. The end portion911A includes a first face911Aa, a second face911Ab, and a pair of third faces911Ac. The first face911Aa is formed so as to come closer to the semiconductor chip4A, toward the tip portion of the end portion911Aa. The second face911Ab is oriented upward in the z-direction. The pair of third faces911Ac are formed on the respective sides of the second face911Ab, so as to come closer to the semiconductor chip4A, in the direction away from the second face911Ab. The wires91B to91F also include the end portion similarly formed to the end portion911A.

As shown inFIG. 4, the first wire91B has one end connected to the source electrode SP of the semiconductor chip43, and the other end connected to the fourth portion14C of the lead1C. The position on the source electrode SP and the fourth portion14C to which the first wire91B is to be connected is not specifically limited. As shown inFIG. 10, in the illustrated example, the one end of the first wire91B is connected to a position spaced apart from the center of the source electrode SP of the semiconductor chip4B in the y-direction, toward the opposite side of the gate electrode CP, as viewed in the z-direction. In addition, the first wire91B overlaps with the center of the source electrode SP of the semiconductor chip48in the x-direction, as viewed in the y-direction. The first wire91B is inclined with respect to the x-direction and the y-direction.

As shown inFIG. 4, the first wire91C has one end connected to the source electrode SP of the semiconductor chip4C, and the other end connected to the fourth portion14D of the lead1D. The position on the source electrode SP and the fourth portion14D to which the first wire91C is to be connected is not specifically limited. As shown inFIG. 10, in the illustrated example, the one end of the first wire91C is connected to a position spaced apart from the center of the source electrode SP of the semiconductor chip4C in the y-direction, toward the opposite side of the gate electrode GP, as viewed in the z-direction. In addition, the first wire91C overlaps with the center of the source electrode SP of the semiconductor chip4C in the x-direction, as viewed in the y-direction. The first wire91C is inclined with respect to the x-direction and the y-direction.

As shown inFIG. 4, the first wire91D has one end connected to the source electrode SP of the semiconductor chip4D, and the other end connected to the fourth portion14E of the lead1E. The position on the source electrode SP and the fourth portion14E to which the first wire91D is to be connected is not specifically limited. As shown inFIG. 10, in the illustrated example, the one end of the first wire91D is connected to a position spaced apart from the center of the source electrode SP of the semiconductor chip4D in the y-direction, toward the opposite side of the gate electrode GP, as viewed in the z-direction. In addition, the first wire91D overlaps with the center of the source electrode SP of the semiconductor chip4D in the x-direction, as viewed in the y-direction. The first wire91D is inclined with respect to the x-direction and the y-direction.

As shown inFIG. 4, the first wire91E has one end connected to the source electrode SP of the semiconductor chip4E, and the other end connected to the fourth portion14F of the lead1F. The position on the source electrode SP and the fourth portion14F to which the first wire91E is to be connected is not specifically limited. As shown inFIG. 10, in the illustrated example, the one end of the first wire91E is connected to a position spaced apart from the center of the source electrode SP of the semiconductor chip4E in the y-direction, toward the opposite side of the gate electrode GP, as viewed in the z-direction. In addition, the first wire91E overlaps with the center of the source electrode SP of the semiconductor chip4E in the x-direction, as viewed in the y-direction. The first wire91E is inclined with respect to the x-direction and the y-direction.

As shown inFIG. 4, the first wire91F has one end connected to the source electrode SP of the semiconductor chip4F, and the other end connected to the fourth portion14G of the lead1G. The position on the source electrode SP and the fourth portion14G to which the first wire91F is to be connected is not specifically limited. As shown inFIG. 10, in the illustrated example, the one end of the first wire91F is connected to a position spaced apart from the center of the source electrode SP of the semiconductor chip4F in the y-direction, toward the opposite side of the gate electrode GP, as viewed in the z-direction. In addition, the first wire91F overlaps with the center of the source electrode SP of the semiconductor chip4F in the x-direction, as viewed in the y-direction. The one end of the first wire91F is, as viewed in the y-direction, shifted to the side of the semiconductor chip4E, with respect to the center of the source electrode SP of the semiconductor chip4F in the x-direction. The first wire91F is inclined with respect to the x-direction and the y-direction.

The plurality of second wires92are each connected to one of the control chips4G and4H, as shown inFIG. 4. The material of the second wires92is not specifically limited and, for example, gold (Au), silver (Ag), copper (Cu), or aluminum (Al) may be employed. The wire diameter of the second wires92is not specifically limited and, in this embodiment, finer than the first wires91A to91F. The wire diameter of the second wires92is, for example, approximately 10 μm to 50 μm. The second wires92correspond to the second conductive material in the present disclosure. In the subsequent description, the second wires92connected to the control chip4G will be referred to as second wires92G, and the second wires92connected to the control chip4H will be referred to as second wires92H.

As shown inFIG. 4, the second wire92G is connected to the gate electrode GP of the semiconductor chip4A, and to a position on the control chip4G on the side of the first portion11A, with respect to the center of the control chip4G in the y-direction. Another second wire92G is connected to the source electrode SP of the semiconductor chip4A, and to a position on the control chip4G on the side of the first portion11A, with respect to the center of the control chip4G in the y-direction. The latter second wire92G is connected to a position on the source electrode SP of the semiconductor chip4A on the side of the semiconductor chip4B in the x-direction, with respect to the gate electrode GP.

As shown inFIG. 4, the second wire92G is connected to the gate electrode GP of the semiconductor chip4B, and to a position on the control chip4G on the side of the first portion11A, with respect to the center of the control chip4G in the y-direction. Another second wire92G is connected to the source electrode SP of the semiconductor chip4B, and to a position on the control chip4G on the side of the first portion11A, with respect to the center of the control chip4G in the y-direction. The latter second wire92G is connected to a position on the source electrode SP of the semiconductor chip48on the side of the semiconductor chip4C in the x-direction, with respect to the gate electrode GP.

As shown inFIG. 4, the second wire92G is connected to the gate electrode GP of the semiconductor chip4C, and to a position on the control chip4G on the side of the first portion11A, with respect to the center of the control chip4G in the y-direction. Another second wire92G is connected to the source electrode SP of the semiconductor chip4C, and to a position on the control chip4G on the side of the first portion11A, with respect to the center of the control chip4G in the y-direction. The latter second wire92G is connected to a position on the source electrode SP of the semiconductor chip48on the side of the semiconductor chip48in the x-direction, with respect to the gate electrode GP.

As shown inFIG. 4, the second wire92H is connected to the gate electrode GP of the semiconductor chip4D, and to a position on the control chip4H on the side of the first portion11A, with respect to the center of the control chip4H in the y-direction. Another second wire92H is connected to the gate electrode GP of the semiconductor chip4B, and to a position on the control chip4H on the side of the first portion11A, with respect to the center of the control chip4H in the y-direction. Further, still another second wire92H is connected to the gate electrode GP of the semiconductor chip4F, and to a position on the control chip4H on the side of the first portion11A, with respect to the center of the control chip4H in the y-direction.

As shown inFIG. 15andFIG. 16, a pair of second wires92G each have one end connected to the first portion51A of the wiring50A, and the other end connected to the control chip4G. Another second wire92G has one end connected to the diode49U, and the other end connected to the control chip4G.

As shown inFIG. 15andFIG. 16, a pair of second wires92G each have one end connected to the first portion51B of the wiring50B, and the other end connected to the control chip4G. Another second wire92G has one end connected to the diode49V, and the other end connected to the control chip4G.

As shown inFIG. 15andFIG. 16, a pair of second wires92G each have one end connected to the first portion51C of the wiring50C, and the other end connected to the control chip4G. Another second wire92G has one end connected to the diode49W, and the other end connected to the control chip4G.

As shown inFIG. 15andFIG. 16, a pair of second wires92G each have one end connected to the first portion51D of the wiring50D, and the other end connected to the control chip4G. Another second wire92G has one end connected to the first portion51E of the wiring50E, and the other end connected to the control chip4G. Still another second wire92G has one end connected to the first portion51F of the wiring50F, and the other end connected to the control chip4G. Still another second wire92G has one end connected to the first portion51G of the wiring50G, and the other end connected to the control chip4G. Further, another pair of second wires92G each have one end connected to the second portion572of the connecting portion57, and the other end connected to the control chip4G.

As shown inFIG. 15andFIG. 16, the second wire92H has one end connected to the first portion51I of the wiring50I, and the other end connected to the control chip4H. Another second wire92H has one end connected to the first portion51J of the wiring50J, and the other end connected to the control chip4H. Still another second wire92H has one end connected to the first portion51K of the wiring50K, and the other end connected to the control chip4H. A pair of second wires92H each have one end connected to the first portion51L of the wiring50L, and the other end connected to the control chip4H. Still another second wire92H has one end connected to the first portion51M of the wiring50M, and the other end connected to the control chip4H. Still another second wire92H has one end connected to the first portion51N of the wiring50N, and the other end connected to the control chip4H. Further, another pair of second wires92H each have one end connected to the first portion51O of the wiring50O, and the other end connected to the control chip4H.

The resin7covers at least the semiconductor chips4A to4F, the control chips4G and4H, a part of each of the plurality of leads1, and a part of each of the plurality of leads2. In this embodiment, in addition, the resin7covers the diodes49U,49V, and49W, the plurality of first wires91A to91F, and the plurality of second wires92. The material of the resin7is not specifically limited. Though not specifically limited, for example an insulative material such as an epoxy resin or silicone gel may be employed to form the resin7.

It is preferable that the dimension DX in the x-direction of the resin7shown inFIG. 2is equal to or smaller than 60 mm. It is preferable that the dimension DY of the resin7in the y-direction is equal to or smaller than 35 mm. It is preferable that the dimension DZ in the z-direction of the resin7shown inFIG. 1is equal to or smaller than 6 mm. In this embodiment, the dimension DX of the resin7is approximately 57 mm, the dimension DY is approximately 30 mm, and the dimension DZ is approximately 5 mm.

In this embodiment, the resin7includes a first face71, a second face72, a third face73, a fourth face74, a fifth face75, a sixth face76, a recess710, a recess720, a recess731, a recess732, a recess733, and a recess734.

The first face71intersects with the z-direction and, in the illustrated example, is perpendicular to the z-direction. The first face71is oriented in the same direction as the first face31of the substrate3. The second face72intersects with the z-direction and, in the illustrated example, is perpendicular to the z-direction. The second face72is oriented in the opposite direction to the first face71, and in the same direction as the second face32of the substrate3.

The third face73is located between the first face71and the second face72in the z-direction, and connected to the first face71and the second face72, in the illustrated example. The third face73intersects with the x-direction, and is oriented in the same direction as the third face33of the substrate3. The fourth face74is located between the first face71and the second face72in the z-direction, and connected to the first face71and the second face72, in the illustrated example. The fourth face74intersects with the x-direction, and is oriented in the opposite direction to the third face73, and in the same direction as the fourth face34of the substrate3.

The fifth face75is located between the first face71and the second face72in the z-direction, and connected to the first face71and the second face72, in the illustrated example. The fifth face75intersects with the y-direction, and is oriented in the same direction as the fifth face35of the substrate3. The sixth face76is located between the first face71and the second face72in the z-direction, and connected to the first face71and the second face72, in the illustrated example. The sixth face76intersects with the x-direction, and is oriented in the opposite direction to the fifth face75, and in the same direction as the sixth face36.

The recess710is a portion receding from the third face73in the x-direction. The recess710is formed so as to reach the first face71and the second face72. The recess720is a portion receding from the fourth face74in the x-direction. The recess720is formed so as to reach the first face71and the second face72.

As shown inFIG. 4, the recess731, the recess732, the recess733, and the recess734are portions receding from the fifth face75in the y-direction. The recess731is located between the second portion22Z of the lead2Z and the second portion22A of the lead2A, as viewed in the y-direction. The recess732is located between the second portion22A of the lead2A and the second portion22B of the lead2B, as viewed in the y-direction. The recess733is located between the second portion22B of the lead2B and the second portion22C of the lead2C, as viewed in the y-direction. The recess734is located between the second portion22C of the lead2C and the second portion22D of the lead2D, as viewed in the y-direction.

<Circuit Configuration of Semiconductor Device A1>

A circuit configuration of the semiconductor device A1will now be described hereunder.

As shown inFIG. 18, the semiconductor device A1includes three switching arms40U,40V, and40W connected in parallel to each other. The switching arm40U includes the semiconductor chips4A and4D, the switching arm40V includes the semiconductor chips4B and4E, and the switching arm40W includes the semiconductor chips4C and4F.

The respective drains of the semiconductor chips4A to4C are connected to each other, and connected to a P terminal (lead1A). the source of the semiconductor chip4A is connected to the drain of the semiconductor chip4D, the source of the semiconductor chip4B is connected to the drain of the semiconductor chip4E, and the source of the semiconductor chip4C is connected to the drain of the semiconductor chip4F. A node N1between the source of the semiconductor chip4A and the drain of the semiconductor chip4D is connected to a U terminal (lead1B). A node N2between the source of the semiconductor chip4B and the drain of the semiconductor chip4E is connected to a V terminal (lead1C). A node N3between the source of the semiconductor chip4C and the drain of the semiconductor chip4F is connected to a W terminal (lead1D). The source of the semiconductor chip4D is connected to an NU terminal (lead1E), the source of the semiconductor chip4E is connected to an NV terminal (lead1F), and the source of the semiconductor chip4F is connected to an NW terminal (lead1G).

A voltage level applied to the U terminal (lead1B), the V terminal (lead1C), and the W terminal (lead1D) is, for example, approximately 0 V to 650 V. A voltage level applied to the NU terminal (lead1E), the NV terminal (lead1F), and the NW terminal (lead1G) is, for example, approximately 0V, and lower than the voltage level applied to the terminal (lead1B), the V terminal (lead1C), and the W terminal (lead1D). The semiconductor chips4A to4C each constitute a high-potential side transistor of a three-phase inverter circuit, and the semiconductor chips4D to4F each constitute a low-potential side transistor of the three-phase inverter circuit.

The respective gates of the semiconductor chip4A to4C are connected to the control chip4G, and the respective sources of the semiconductor chips4A to4C are connected to the control chip4G. The respective gates of the semiconductor chips4D to4F are connected to the control chip4H.

The control chip4G is electrically connected to a VBU terminal (lead2A), a VBV terminal (lead2B), a YEW terminal (lead2C), a first VCC terminal (lead2D), an HINU terminal (lead2E), an HINV terminal (lead2F), an HINW terminal (lead2G), and a first GND terminal (lead2H). The first VCC terminal supplies a source voltage VCC to the control chip4G. A gate signal voltage is applied to the HINU terminal, the HINV terminal, and the HINW terminal, from an external gate driver circuit (not shown). The control chip4G is a circuit for applying the gate signal voltages to the respective gates of the semiconductor chips4A to4C. The first GND terminal and the second GND terminal (lead2O) are connected to each other inside the semiconductor device A1, more specifically in the conductive section5on the substrate3.

The control chip4H is electrically connected to an LINU terminal (lead2I), an LINV terminal (lead2J), an LINW terminal (lead2K), a second VCC terminal (lead2L), an FO terminal (lead2M), a CIN terminal (lead2N), and a second GND terminal (lead2O). The second VCC terminal supplies the source voltage VCC to the control chip4H. The gate signal voltage is applied to the LINU terminal, the LINV terminal, and the LINW terminal, from the external gate driver circuit. The control chip4H is a circuit for applying the gate signal voltages to the respective gates of the semiconductor chips4D to4F.

A first voltage of the electrical signal provided to the HINU terminal (lead2E), the HINV terminal (lead2F), and the HINW terminal (lead2G) is lower than a second voltage (source voltage VCC) applied by the first VCC terminal (lead2D) to drive the control chip4G. A first voltage of the electrical signal provided to the LINU terminal (lead2I), the LINV terminal (lead2J), and the LINW terminal (lead2K) is lower than a second voltage (source voltage VCC) applied by the second VCC terminal (lead2L) to drive the control chip4H.

FIG. 19illustrates an example of the configuration of the control chips4G and4H, for example for driving the switching arm40U, in other words an example of the circuit in the control chips4G and4H (hereinafter, control circuit GDC) for controlling the switching arm40U.

As shown inFIG. 19, the circuit in the control circuit GDC corresponding to the control chip4G includes a resistance461, a Schmitt trigger462, a level shifter463, a controller464, a pulse generator465, a level shifter466, a filter circuit467, an RS flip-flop circuit468, and a driver469, in this order from the input side (HINU terminal side) to the output side (U terminal side).

The resistance461pulls down the HINU terminal to the ground terminal. Accordingly, when the HINU terminal is open, an upper input signal HINU, representing the gate signal voltage inputted from the gate driver circuit to the HINU terminal, falls to a low level (logic level to turn off the semiconductor chip4A), and therefore the semiconductor chip4A is prevented from being unintentionally turned on.

The Schmitt trigger462transmits the upper input signal HINU inputted to the HINU terminal, to the level shifter463. Here, a predetermined hysteresis is given to the threshold voltage of the Schmitt trigger462. Such a configuration improves noise resistance.

The level shifter463shifts the level of the output signal of the Schmitt trigger462to an appropriate voltage level (VCC−GND) to be inputted to the controller464, and outputs the shifted voltage. The controller464controls whether to transmit the output signal of the level shifter463to the pulse generator465(consequently, whether to drive the semiconductor chip4A), on the basis of a fault signal inputted from a fault protection unit480, or an external fault signal inputted from the FO terminal.

The pulse generator465generates pulse signals, such as an on-signal SONand an off-signal SOFF, on the basis of the output signal of the controller464. More specifically, the pulse generator465sets the on-signal SONto a high level for a predetermined on-period TON1, using the rising edge of the output signal of the controller464as the trigger, and sets the off-signal SOFFto a high level for a predetermined on-period T using the falling edge of the output signal of the controller464as the trigger. Here, the output signal of the controller464(based on the upper input signal HINU), the on-period TON1, and the on-period TON2are set such that both of the on-signal SONand the off-signal SOFFdo not rise to the high level at the same time. Therefore, provided that the semiconductor device A1is normally operating, when at least one of the on-signal SONand the off-signal SOFFis at the high level, the other is at the low level.

The level shifter466is located between a high-potential block including the filter circuit467, the RS flip-flop circuit468, and the driver469, and a low-potential block including the pulse generator465, to shift the signal level and transmit the shifted signal from the low-potential block to the high-potential block. More specifically, the level shifter466receives the pulse signals, namely the on-signal SONand the off-signal SOFF, from the pulse generator465included in the low-potential block. The level shifter466shifts the level of these signals, and outputs the shifted signals to the filter circuit467, as a first shifted signal and a second shifted signal. Here, the high-potential block operates between a boost voltage VBU applied to the VBU terminal, and a switch voltage VS applied to the U terminal.

The filter circuit467filtrates the first shifted signal and the second shifted signal inputted from the level shifter466, and outputs the filtrated signals to the RS flip-flop circuit468.

The RS flip-flop circuit468includes a set terminal (S terminal) to which the first shifted signal filtrated by the filter circuit467is inputted as a set signal SSET, a reset terminal (R terminal) to which the second shifted signal filtrated by the filter circuit467is inputted as a reset signal SRESET, and an output terminal (Q terminal) that outputs an output signal SQ. The RS flip-flop circuit468sets the output signal SQto the high level, using the falling edge of the set signal SSETas the trigger, and sets the output signal SQto the low level, using the falling edge of the reset signal SRESETas the trigger. Here, the set signal SSETand the reset signal SRESETare both inputted from the level shifter466.

The driver469generates an upper output signal HOU based on the output signal of the RS flip-flop circuit468, and outputs the upper output signal HOU to the gate of the semiconductor chip4A. Here, the high level of the upper output signal HOU corresponds to the boost voltage VBU, and the low level corresponds to the switch voltage VS.

The circuit in the control circuit GDC corresponding to the control chip4H includes a resistance471, a Schmitt trigger472, a level shifter473, a delay circuit474, and a driver475, in this order from the input side (LINU terminal side) to the output side (U terminal side). In this embodiment, the controller464of the control chip4G is provided between the level shifter473and the delay circuit474. Alternatively, the control chip4H may include a controller, apart from the controller464of the control chip4G. In this case, the controller of the control chip4H may be provided between the delay circuit474and the driver475because, when a fault occurs, the semiconductor chip4D can be more quickly turned off without the need to involve the delay circuit474.

The resistance471pulls down the LINU terminal to the ground terminal. Accordingly, when the LINU terminal is open, a lower input signal LINU, representing the gate signal voltage inputted from the gate driver circuit, falls to the low level (logic level to turn off the semiconductor chip4D), and therefore the semiconductor chip4D is prevented from being unintentionally turned on.

The Schmitt trigger472transmits the lower input signal LINU inputted to the LINU terminal, to the level shifter473. Here, a predetermined hysteresis is given to the threshold voltage of the Schmitt trigger472. Such a configuration improves noise resistance.

The level shifter473shifts the level of the output signal of the Schmitt trigger472to an appropriate voltage level (VCC−GND) to be inputted to the controller464, and outputs the shifted voltage.

The controller464controls whether to transmit the output signal of the delay circuit474to the driver475(consequently, whether to drive the semiconductor chip4D), on the basis of a fault signal inputted from the fault protection unit480, or an external fault signal inputted from the FO terminal.

The delay circuit474transmits the output signal of the controller464to the driver475, giving a predetermined delay (corresponding to the circuit delay in the pulse generator465, the level shifter466, and the RS flip-flop circuit468of the control chip4G) to the output signal.

The driver475outputs the lower output signal LOU to the gate of the semiconductor chip4D, on the basis of the output signal of the controller464, delayed by the delay circuit474. Here, the high level of the lower output signal LOU corresponds to the source voltage VCC, and the low level corresponds to the ground voltage VGND.

The fault protection unit480includes a thermal shut down circuit (TSD circuit)481, an under voltage lock out circuit (UVLO circuit)482, a low-pass filter circuit483, a current limiting circuit484, a power fault protection circuit485, a fault signal generation circuit486, a transistor487, a Schmitt trigger488, and a level shifter489.

The thermal shut down circuit481switches a thermal shut down signal from the logic level in the normal condition (e.g., low level) to the logic level in an abnormal condition (e.g., high level), when the junction temperature of the semiconductor device A1exceeds a predetermined threshold.

The under voltage lock out circuit482switches a lock out signal from the logic level in the normal condition (e.g., low level) to the logic level in an abnormal condition (e.g., high level), when the source voltage VCC falls below a predetermined threshold voltage.

The low-pass filter circuit483is electrically connected to a detection terminal CIN. The low-pass filter circuit483outputs a detected voltage CIN to each of the current limiting circuit484and the power fault protection circuit485.

The current limiting circuit484switches a current limiting signal from the logic level in the normal condition (e.g., low level) to the logic level in an abnormal condition (e.g., high level), when the detected voltage CIN exceeds a first threshold.

The power fault protection circuit485switches a power fault protection signal from the logic level in the normal condition (e.g., low level) to the logic level in an abnormal condition (e.g., high level), when the detected voltage CIN exceeds a second threshold. Here, an example of the second threshold is a higher voltage than the first threshold.

The fault signal generation circuit486monitors the thermal shut down signal inputted from the thermal shut down circuit481, the lock out signal inputted from the under voltage lock out circuit482, the current limiting signal inputted from the current limiting circuit484, the power fault protection signal inputted from the power fault protection circuit485, and the external fault signal inputted from the FO terminal. The fault signal generation circuit486switches a first fault signal from the logic level in the normal condition (e.g., low level) to the logic level in an abnormal condition (e.g., high level), when a fault occurs in the current limiting circuit484. The fault signal generation circuit486switches a second fault signal from the logic level in the normal condition (e.g., low level) to the logic level in an abnormal condition (e.g., high level), when a fault occurs in at least one of thermal shut down circuit481, the under voltage lock out circuit482, and the power fault protection circuit485, or when the external fault signal is inputted. The fault signal generation circuit486outputs the first fault signal and the second fault signal to the controller464.

Upon receipt of the first fault signal, the controller464limits, for example, the current flowing to at least one of the semiconductor chip4A and the semiconductor chip4D, Upon receipt of the second fault signal, the controller464turns off both of the semiconductor chips4A and4D. The fault signal generation circuit486switches the first fault signal to the logic level in the abnormal condition, when the current limiting signal is inputted, and switches the second fault signal to the logic level in the abnormal condition, when one of the thermal shut down signal, the lock out signal, the power fault protection signal, and the external fault signal is inputted.

The transistor487forms an open drain output stage for outputting the external fault signal from the FO terminal. While the semiconductor device A1is without a fault, the transistor487is turned off by the fault signal generation circuit486, and the external fault signal is set to the high level. In contrast, when a fault occurs in the semiconductor device A1, the transistor487is turned on by the fault signal generation circuit486, and the external fault signal is set to the low level.

The Schmitt trigger488transmits the external fault signal inputted to the FO terminal (e.g., external fault signal outputted from the FO terminal of another semiconductor device), to the level shifter489. Here, a predetermined hysteresis is given to the threshold voltage of the Schmitt trigger488. Such a configuration improves noise resistance.

The level shifter489shifts the level of the output signal of the Schmitt trigger488to an appropriate voltage level (VCC−GND) to be inputted to the controller464, and outputs the shifted voltage.

A boot strap circuit490U includes the diode49U having the anode connected to the application terminal of the source voltage VCC via a resistance491U, and a bootstrap capacitor492U located between the cathode of the diode49U and the source of the semiconductor chip4A. The bootstrap capacitor492U is electrically connected to the VBU terminal and the U terminal.

The boot strap circuit490U generates a boost voltage VB (drive voltage for the high-potential block including the driver469), at a connection node (U terminal) between the diode49U and the bootstrap capacitor492U. The resistance491U limits the current supplied from an external power source to the diode49U through the first VCC terminal. Thus, the charging current to the bootstrap capacitor492U is limited.

When the semiconductor chip4A is turned on and the semiconductor chip4D is turned off, the current runs from the application terminal of the source voltage VCC, through the diode49U, the bootstrap capacitor492U, and the semiconductor chip4D, when the switch voltage VS seen at the U terminal is set to the low level (GND). Accordingly, the bootstrap capacitor492U provided between the VBU terminal and the U terminal is charged. At this point, the boost voltage VB (i.e., charging voltage for the bootstrap capacitor492U) seen at the VBU terminal has a value obtained by subtracting a forward dropping voltage Vf of the diode49U from the source voltage VCC(VCC−Vf).

In contrast, when the semiconductor chip4A is turned on and the semiconductor chip4D is turned off, with the bootstrap capacitor492U being charged, the switch voltage VS is raised from the low level (GND) to the high level (HV). The boost voltage VB is raised to a value higher than the high level (HV) of the switch voltage VS, by an amount corresponding to the charging voltage (VCC−Vf) for the bootstrap capacitor493U (i.e., HV+VCC−Vf). Employing thus the boost voltage VS as the drive voltage for the high-potential block (RS flip-flop circuit468and driver469) and the level shifter466enables the on/off control (in particular, on control), in other words the switching control of the semiconductor chip4A, to be performed.

<Manufacturing Method of Semiconductor Device A1>

An example of the manufacturing method of the semiconductor device A1will be described hereunder, with reference toFIG. 20toFIG. 30. The manufacturing method described hereunder is merely an exemplary method to obtain the semiconductor device A1, and in no way intended to limit the present disclosure.

As shown inFIG. 20, the manufacturing method according to this embodiment includes a conductive section formation process (step S1), a lead bonding material preparation process (step S2), a lead frame bonding process (step S3), a chip bonding material preparation process (step S4), a semiconductor chip mounting process (step S5), a control chip mounting process (step S6), a first wire connection process (step S7), a second wire connection process (step S8), a resin formation process (step S9), and a frame cutting process (step S10).

In the conductive section formation process (step S1), the substrate3is prepared as shown inFIG. 21. For example, a ceramic is employed to form the substrate3. Then the conductive section5and the plurality of bonding sections6are formed on the first face31of the substrate3, as shown inFIG. 22. In this embodiment, the conductive section5and the plurality of bonding sections6are collectively formed. For example, the conductive section5and the plurality of bonding sections6, containing a conductive material, for example a metal such as silver (Ag), can be obtained by printing a metal paste and then sintering the metal paste.

In the lead bonding material preparation process (step S2), a bonding paste810and a conductive bonding paste820are printed on the conductive section5and the plurality of bonding sections6, as shown inFIG. 23. The bonding paste810and the conductive bonding paste820are, for example, Ag paste or solder paste.

In the lead frame bonding process (step S3), the lead frame10is prepared as shown inFIG. 24. The lead frame10includes the plurality of leads1and the plurality of leads2, and also a frame19and a frame29. The frame19is connected to the plurality of leads1, to support the leads1. The frame29is connected to the plurality of leads2, to support the leads2. The shape of the lead frame10is by no means limited. Then the plurality of leads1are made to oppose the plurality of bonding regions6, via the bonding paste810. In addition, the plurality of leads2are made to oppose the conductive section5, via the conductive bonding paste820. For example, by heating the bonding paste810and the conductive bonding paste820and then cooling these pastes, the bonding material81is formed from the bonding paste810, and the conductive bonding material82is formed from the conductive bonding paste820. Thus, the plurality of leads1are bonded to the plurality of bonding sections6via the bonding material81, and the plurality of leads2are bonded to the conductive section5via the conductive bonding material82.

In the chip bonding material preparation process (step S4), a conductive bonding paste830is printed on the main surface111A of the first portion11A, the main surface111B of the first portion11B, the main surface111C of the first portion11C, and the main surface111D of the first portion11D, for example as shown inFIG. 25. The conductive bonding paste830is, for example, Ag paste or solder paste.

In the semiconductor chip mounting process (step S5), the semiconductor chips4A to4F are each stuck to the conductive bonding paste830, as shown inFIG. 26. Then the conductive bonding material83is formed from the conductive bonding paste830, for example by heating the conductive bonding paste830and then cooling the same. Thus, the semiconductor chips4A to4F are each bonded to the corresponding one of the first portions11A to11D, via the conductive bonding material83.

In the control chip mounting process (step S6), a paste containing a metal is printed on the first base portion55and the second base portion56of the conductive section5, as shown inFIG. 27. The mentioned paste may be, for example, Ag paste or solder paste. Then the control chip4G and the control chip4H are each stuck to the paste. Then the control chip4G and the control chip4H are respectively bonded to the first base portion55and the second base portion56via the conductive bonding material84, for example by heating the paste and then cooling the same. In addition, through a similar process, the diodes49U,49V, and49W are respectively bonded to the wirings50A,50B, and50C, via the conductive bonding material85.

In the first wire connection process (step S7), the first wires91A to91F are attached as shown inFIG. 28. In the illustrated example, wires formed of aluminum (Al) are sequentially attached, for example by a wedge bonding method. Thus, the first wires91A to91F can be obtained.

In the second wire connection process (step S8), the plurality of second wires92are attached as shown inFIG. 29. In the illustrated example, wires formed of gold (Au) are sequentially attached, for example by a capillary bonding method. Thus, the plurality of second wires92can be obtained.

In the resin formation process (step S9), for example a part of the lead frame10, a part of the substrate3, the semiconductor chips4A to4F, the control chips4G and4H, the diodes49U,49V, and49W, the first wires91A to91F, and the plurality of second wires92are enclosed by a mold, as shown inFIG. 30. Then a resin material of a liquid phase is loaded in the space defined by the mold. Upon curing the resin material, the resin7can be obtained.

In the frame cutting process (step S10), portions of the lead frame10exposed from the resin7are cut, at predetermined positions. Therefore, the plurality of leads1and the plurality of leads2separated from each other. Then upon bending the plurality of leads1and the plurality of leads2if need be, the semiconductor device A1can be obtained.

Advantageous effects of the semiconductor device A1will now be described hereunder.

According to this embodiment, the control chips4G and4H are located on the conductive section5formed on the substrate3. Utilizing the conductive section5as the conduction path to the control chips4G and4H allows the conduction path to be formed in a finer size and in higher density, compared with the case of employing a metal lead to form the conduction path. Therefore, the level of integration of the semiconductor device A1can be upgraded. In addition, employing the leads1A to1D, which exhibit higher heat dissipation performance than the substrate3, prevents degradation in heat dissipation performance of the semiconductor chips4A to4F, which may be incurred in the case of employing the substrate3.

The bonding sections6A to6D are formed on the substrate3, and the leads1A to1D are bonded to the substrate3via the bonding sections6A to6D. The surface of the bonding sections6A to6D can be finished to be smoother, compared with the surface roughness of the main surface31of the substrate3, for example formed of a ceramic. Such a configuration prevents undesired appearance of a minute void in the heat conduction path from the leads1A to1D to the substrate3, thereby further improving the heat dissipation performance of the semiconductor chips4A to4F.

Since the leads1A to1D are exposed from the resin7, conduction paths from outside to the semiconductor chips4A to4F can be provided, and the semiconductor chips4A to4F can attain a higher level of heat dissipation characteristics.

The second face32of the substrate3is exposed from the resin7. Therefore, the heat transmitted from the semiconductor chips4A to4F to the substrate3can be more efficiently released to outside.

Since the conductive section5and the bonding sections6A to6D contain the same conductive material, the conductive section5and the bonding sections6A to6D can be collectively formed on the substrate3. Such a configuration contributes to improving the manufacturing efficiency of the semiconductor device A1.

The plurality of leads2are bonded to the conductive section5via the conductive bonding material82. Accordingly, the plurality of leads2can be more firmly fixed to the substrate3. Further, the resistance between the plurality of leads2and the conductive section5can be reduced.

As shown inFIG. 15andFIG. 16, the clearances G23between the adjacent ones of the leads2D to2N are narrower than the clearance G54between the adjacent ones of the second portions52D to52N shown inFIG. 16. Therefore, the leads2D to2N can be located closer to each other.

The first portion21A to the first portion21N of the lead2A to2N have a rectangular shape, with the longer sides extending along the y-direction. Therefore, the clearances G21, G22, and G23between the adjacent ones of the leads2A to2N can be narrowed, while an increased bonding area of the leads2A to2N can be secured.

The first portions21O and21P of the leads2O,2P are aligned in the y-direction, so as to overlap with the first portion21N as viewed in the y-direction. Such a configuration allows a sufficient number of leads2to be secured, and yet prevents an increase in size of the substrate3.

The control chips4G and4H are located between the semiconductor chips4A to4F and the plurality of leads2, as viewed in the x-direction. Accordingly, the plurality of leads2, electrically connected to the control chips4G and4H via the conductive section5, can be spaced apart from the semiconductor chips4A to4F, to insulate the plurality of leads2from the semiconductor chips4A to4F.

The semiconductor chips4A to4C are directly bonded to the lead1A via the conductive bonding material83, the semiconductor chip4D is directly bonded to the lead1B via the conductive bonding material83, the semiconductor chip4E is directly bonded to the lead1C via the conductive bonding material83, and the semiconductor chip4F is directly bonded to the lead1D via the conductive bonding material83. Therefore, the semiconductor chips4A to4F can each be electrically connected to the corresponding one of the leads1A to1D, and the heat of the semiconductor chips4A to4F can be more efficiently conducted to the leads1A to1D.

The semiconductor chip4A is connected to the lead1B via the first wire91A. The semiconductor chip4B is connected to the lead1C via the first wire91B. The semiconductor chip4C is connected to the lead1D via the first wire91C. The semiconductor chip4D is connected to the lead1E via the first wire91D. The semiconductor chip4E is connected to the lead1F via the first wire91A. The semiconductor chip4F is connected to the lead10via the first wire91A. Such a configuration suppresses an increase in resistance, in each of the conduction paths between the leads1B to1G and the semiconductor chips4A to4F spaced therefrom.

The control chips4G and4H are bonded to the conductive section5formed on the substrate3, via the conductive bonding material84. Therefore, the control chips4G and4H can be electrically connected to the conductive section5.

The control chip4G is connected to the conductive section5via the second wire92G, and the control chip4H is connected to the conductive section5via the second wire92H. Such a configuration allows the control chips4G and4H to be electrically connected to the respective portions of the conductive section5spaced apart from the control chips4G and4H.

In the case of selecting a ceramic such as alumina (Al2O3), silicon nitride (SiN), aluminum nitride (AlN), or alumina containing zirconia, to form the substrate3, and forming the substrate3in a thickness of, for example, approximately 0.1 mm to 1.0 mm, the conductive section5and the bonding section6can be seen through the substrate3, from the side of the second face32of the substrate3. Therefore, after the manufacturing of the semiconductor device A1, whether the conductive section5or the bonding sections6have been unintentionally formed in an irregular shape can be visually checked from outside, without the need to disassemble the semiconductor device. Here, the material and the thickness of the substrate3may be selected as desired without limitation to the above, provided that the shape of at least a part of the conductive section5can be visually checked from outside.

FIG. 31and the subsequent drawings illustrate variations and other embodiments of the present disclosure. In these drawings, elements that are the same as or similar to those of the foregoing embodiment are given the same numeral as in the mentioned embodiment.

First Variation of First Embodiment

FIG. 31illustrates a first variation of the semiconductor device A1. A semiconductor device A11according to this variation is different from the foregoing embodiment, in the configuration of the semiconductor chips4A to4F. In addition, the semiconductor device A11includes diodes41A to41F.

In this variation, the semiconductor chips4A to4F are a transistor configured as an IGBT.FIG. 32illustrates an example of the detailed configuration of the semiconductor chip4A. The semiconductor chips4A to4F have the same configuration as each other. Therefore, the configuration of the semiconductor chip4A will be described hereunder, and the description of the remaining semiconductor chips4B to4F will be omitted. The configuration of the semiconductor chips4A to4F is not limited to the example shown inFIG. 32, but may be modified in various manners.

The semiconductor chip4A according to this variation is a trench gate-type IGBT. The semiconductor chip4A includes an n-type semiconductor substrate420. The semiconductor substrate420is for example a silicon substrate, and includes a front surface420A and a back surface420B on the opposite side of the front surface420A. A unit cell421, constituting a part of the semiconductor chip4A, is fabricated on the front surface region of the semiconductor substrate420.

The semiconductor substrate420includes a P+-type collector region422, an n+-type buffer region423, and an n-type drift region424, in this order from the side of the back surface420B. The collector region422and the buffer region423are formed in the back surface region of the semiconductor substrate420. The collector region422is exposed from the back surface420B of the semiconductor substrate420. The collector region422contains boron (B) as the p-type impurity. The buffer region423is formed on the collector region422, in contact therewith. The drift region424is formed from a part of the semiconductor substrate420. A part of the drift region424is exposed from the front surface420A of the semiconductor substrate420(not shown). The buffer region423and the drift region424each contain one of phosphor (P), arsenic (As), and antimony (Sb), as the n-type impurity.

A plurality of gate trenches425are formed in the front surface region of the semiconductor substrate420, at predetermined intervals between each other. The gate trenches425are each formed so as to penetrate through a base region429, and include a bottom portion located in the drift region424. A gate electrode427is filled in each of the gate trenches425, via a gate insulation film426. On the lateral faces of the plurality of gate trenches425, an n+-type emitter region428, the p−-type base region429, and the drift region424are formed in this order, from the side of the front surface420A toward the back surface420B of the semiconductor substrate420.

The base region429is shared by one of the gate trenches425and another gate trench425. The emitter region428is formed along the lateral face on one side and the opposite side of each gate trench425, so as to be exposed from the front surface420A of the semiconductor substrate420. The emitter region428contains one of phosphor (P), arsenic (As), and antimony (Sb), as the n-type impurity. A p+-type contact region430is formed in the front surface region of the base region429, so as to be interposed between the emitter regions428. The base region429and the contact region430contain boron (B), as the p-type impurity.

A region in the base region429between the emitter region428and the drift region424serves as a channel region431, so that a plurality of unit cells421, constituting a part of the semiconductor chip4A, are formed. The unit cell421is defined as a region between the center line of one gate trench425and the center line of another gate trench425.

An insulation film432, for example formed of silicon dioxide (SiO2), is provided on the front surface420A of the semiconductor substrate420, so as to cover the gate trench425. The insulation film432includes a contact hole432afor exposing a part of the emitter region428, and the contact region430. An emitter electrode433, for example formed of Ti/TiN, is provided on the insulation film432. The emitter electrode433enters into the contact hole432afrom the insulation film432, to be electrically connected to the emitter region428and the contact region430, inside the contact hole432a.

A collector electrode435, for example formed of aluminum (AlSiCu, AlCu, or the like), is provided on the side of the back surface4203of the semiconductor substrate420. The collector electrode435is electrically connected to the collector region422.

Referring toFIG. 33andFIG. 34, an example of the detailed configuration of the diodes41A to41F will be described. The diodes41A to46F have the same configuration as each other. Therefore, the configuration of the diode46A will be described hereunder, and the description of the remaining diodes46E to46F will be omitted. The configuration of the diodes41A to46F is not limited to the example shown inFIG. 33andFIG. 34, but may be modified in various manners.

The diode41A includes an n+-type silicon substrate440(with n-type impurity concentration of, for example, 1e18 to 1e21 cm−3). A cathode electrode441is formed so as to cover the entirety of the back surface of the silicon substrate440. The cathode electrode441is formed of a metal that makes an ohmic contact with n-type silicon (e.g., gold (Au), nickel (Ni), silicide, or cobalt (Co) silicide).

An n−-type epitaxial layer442(semiconductor layer), lower in concentration than the silicon substrate440(with n-type impurity concentration of, for example, 1e15 to 1e17 cm−3), is stacked on the surface of the silicon substrate440. The thickness of the epitaxial layer442is, for example, 2 μm to 20 μm.

A field insulation film443, for example formed of silicon dioxide (SiO2), is stacked on the surface of the epitaxial layer442. The thickness of the field insulation film443is, for example, equal to or thicker than 1000 Å, preferably 7000 Å to 40000 Å. Here the, field insulation film443may be formed of other insulative materials, such as silicon nitride (SiN).

The field insulation film443includes an opening444, in which the central region of the epitaxial layer442is exposed. A plurality of trenches445are formed in the superficial portion of the central region of the epitaxial layer442, so as to recede from the surface of the epitaxial layer442. Each of the trenches445is a vertical groove extending in a predetermined direction. The bottom face of the trench445is planar, along the surface of the epitaxial layer442. Accordingly, the cross-section of the trench445has a generally rectangular shape. In this embodiment, seven trenches445extend in parallel, at predetermined intervals. In other words, the seven trenches445are formed in a stripe pattern, in a plan view.

In the superficial portion of the epitaxial layer442, a mesa portion446is formed in a region between the trenches445adjacent to each other. When the trench445has a cross-section of a generally rectangular shape, accordingly the mesa portion446also has a cross-section of a generally rectangular shape. The mesa portions446each include a pair of side walls (side walls of the trench445) erected generally vertically from the end of the respective bottom faces of two trenches445adjacent to each other, and a top face (surface of the epitaxial layer442) connecting the pair of side walls.

An anode electrode447is formed on the epitaxial layer442. The anode electrode447is completely filled in the opening444of the field insulation film443, and protrudes outwardly from the opening444, so as to cover the peripheral edge448of the opening444in the field insulation film443. In other words, the peripheral edge448of the field insulation film443is interposed between the epitaxial layer442and the anode electrode447from the upper and lower sides, along the entire circumference. The protruding range of the anode electrode447, covering the peripheral edge448of the field insulation film443, from the end portion of the opening444of the field insulation film443is, for example, equal to or wider than 10 μm, preferably 10 μm to 100 μm.

The anode electrode447has a multilayer structure (in this embodiment, two-layer structure), including a Schottky metal449bonded to the epitaxial layer442in the opening444of the field insulation film443, and a contact metal450stacked on the Schottky metal449.

The Schottky metal449is formed of a metal that forms a Schottky junction upon being bonded to an N-type silicon (e.g., titanium (Ti), molybdenum (Mo), palladium (Pd), and so forth). The Schottky metal449according to this embodiment is formed of titanium. The Schottky metal449is formed in contact with the surface of the epitaxial layer442, including the inner wall (bottom face and a pair of side walls) of the trench445. Accordingly, the Schottky metal449is in contact with the surface of the epitaxial layer442, along the inner wall of all the trenches445, and outside the trenches445. In addition, the Schottky metal449covers the entirety of the inner wall of each of the trenches445, and continuously extends outwardly of the trench445. Thus, the Schottky metal449is bonded to the surface of the epitaxial layer442exposed in the opening444of the field insulation film443, so as to cover the entirety of the mentioned surface. The Schottky metal449according to this embodiment includes bottom faces449aeach formed in contact with the bottom face of the trench445, side faces449beach formed in contact with the side wall of the trench445(side wall of the mesa portion446), and top faces449ceach formed in contact with the top face of the mesa portion446.

In this case, as indicated by bold lines inFIG. 34, the interface S between the Schottky metal449and the surface of the epitaxial layer442(Schottky interface) has an uneven cross-section, inside the opening444of the field insulation film443. Accordingly, the area of the Schottky interface Ss is larger than the apparent area of the epitaxial layer442, in a plan view of the surface of the epitaxial layer442(horizontal portion inFIG. 34) along the normal direction thereof. More specifically, the Schottky interface Ss includes bottom faces Ss1each formed in contact with the bottom face of the trench445, side faces Ss2each formed in contact with the side wall of the trench445(side wall of the mesa portion446), and top faces Ss3each formed in contact with the top face of the mesa portion446. When the trenches445each have a generally rectangular shape, the area of the Schottky interface Ss can be increased by an amount corresponding to the side faces Ss2, compared with the case where the trenches445are not provided.

The Schottky metal449bonded to the epitaxial layer442forms a Schottky barrier (potential barrier) of 0.52 eV to 0.9 eV for example, against the silicon semiconductor constituting the epitaxial layer442. The thickness of the Schottky metal449according to this embodiment is 0.02 μm to 0.2 μm.

The contact metal450is a portion of the anode electrode447exposed on the outermost surface of the diode41A, to which the first wire91A is connected. In other words, the contact metal450serves as the anode electrode pad of the diode41A. The contact metal450is, for example, formed of aluminum (Al). In this embodiment, the thickness of the contact metal450is, for example, 0.5 μm to 5 μm. The contact metal450is filled in each of the trenches445, in contact with the Schottky metal449covering the inner wall of the trenches445. Thus, the contact metal450is in contact with the bottom face449a, the pair of side faces449b, and the top face449cof the Schottky metal449. Accordingly, the contact metal450is formed so as to have an uneven cross-section, on the side in contact with the Schottky metal449in the trenches445. The surface of the contact metal450on the opposite side of the Schottky metal449is formed in a planar shape, along the surface of the epitaxial layer442(except the inner wall of the trenches445).

When the Schottky metal449is formed of titanium, it is preferable that a titanium nitride (TiN) layer is interposed between the Schottky metal449and the contact metal450, which is formed of aluminum. The titanium nitride layer serves as a barrier layer that bonds the titanium of the Schottky metal449and the aluminum of the contact metal450together, and secures conduction between the titanium and the aluminum, and further suppresses mutual diffusion of the titanium and the aluminum. The barrier layer suppresses or prevents the diffusion of the material of the contact metal450to the Schottky metal449, to thereby protect the Schottky interface Ss.

A surface cover film (not shown) may be formed on the outermost surface of the diode41A. In this case, it is preferable to form an opening for exposing the contact metal450, at a central region of the surface cover film. The first wire91A is connected to the contact metal450, through this opening.

A guard ring451, formed of a p-type diffusion layer, is provided in the superficial portion of the epitaxial layer442, in contact with the Schottky metal449. The guard ring451is formed along the contour of the opening444of the field insulation film443, so as to cover both the outer and inner sides of the opening444, in a plan view. Accordingly, the guard ring451includes an inner portion451aextending inwardly of the opening444of the field insulation film443, and contacting an outer edge449d, corresponding to the extremity of the portion of the Schottky metal449located inside the opening444, and an outer portion451bextending outwardly of the opening444, and opposed to the anode electrode447(Schottky metal449on the peripheral edge448), via the peripheral edge448of the field insulation film443. The depth of the guard ring451from the surface of the epitaxial layer442is, for example, 0.5 μm to 8 μm.

The guard ring451, formed over the outer and inner sides of the opening444of the field insulation film443, covers the boundary between the peripheral edge448of the field insulation film443and the Schottky metal449, from the side of the epitaxial layer442. Without the guard ring451, the electric field concentrates at the boundary when a reverse bias is applied to the diode41A, and therefore leakage is prone to be incurred. Because of the presence of the guard ring451covering the mentioned boundary in the diode41A, the depletion layer spreading from the guard ring451when the reverse bias is applied mitigates the concentration of the electric field, to thereby suppress the leakage. Consequently, the withstand voltage of the diode41A is improved.

In this variation, as shown inFIG. 31, the main surface111A includes three first regions Ra, Rb, and Rc, and three second regions R1a, R1b, and R1c, defined by the groove1112A. The three first regions Ra, Rb, and Rc are located on the side of the lead2, in the y-direction. The shape of the three first regions Ra, Rb, and Rc is not specifically limited. In the illustrated example, the mentioned regions have an elongate rectangular shape having the long sides extending along the y-direction, as viewed in the z-direction. The three first regions Ra, Rb, and Rc overlap with each other as viewed in the x-direction. In the illustrated example, further, the three first regions Ra, Rb, and Rc generally coincide with each other, as viewed in the x-direction. Here, the expression “generally coincide” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first region Ra, Rb, or Rc in the y-direction).

The second regions R1a, R1b, and R1care located on the opposite side of the lead2with respect to the first regions Ra, Rb, and Rc, in the y-direction. The shape of the three second regions R1a, R1b, and R1cis not specifically limited. In the illustrated example, the mentioned regions have a rectangular shape, as viewed in the z-direction. The three second regions R1a, R1b, and R1coverlap with each other, as viewed in the x-direction. In the illustrated example, further, the three second regions R1a, R1b, and R1cgenerally coincide with each other, as viewed in the x-direction. Here, the expression “generally coincide” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second region R1a, R1b, or R1cin the y-direction).

The sizes of the three first regions Ra, Rb, and Rc, and the three second regions R1a, R1b, and R1c, are not specifically limited. In the illustrated example, a size y1of the first regions Ra, Rb, and Rc in the y-direction is larger than a size y2of the second regions R1a, R1b, and R1cin the y-direction.

The main surface111E includes a first region Rd and a second region R1d, defined by the groove1112B. The first region Rd is located on the side of the lead2, in the y-direction. The shape of the first region Rd is not specifically limited. In the illustrated example, the first region Rd has an elongate rectangular shape having the long sides extending along the y-direction, as viewed in the z-direction. The second region R1dis located on the opposite side of the lead2with respect to the first region Rd, in the y-direction. The shape of the second region R1dis not specifically limited. In the illustrated example, the second region R1dhas a rectangular shape, as viewed in the z-direction.

The main surface111C includes a first region Re and a second region R1e, defined by the groove1112C. The first region Re is located on the side of the lead2, in the y-direction. The shape of the first region Re is not specifically limited. In the illustrated example, the first region Re has an elongate rectangular shape having the long sides extending along the y-direction, as viewed in the z-direction. The second region R1eis located on the opposite side of the lead2with respect to the first region Re, in the y-direction. The shape of the second region R1eis not specifically limited. In the illustrated example, the second region R1ehas a rectangular shape, as viewed in the z-direction.

The main surface111D includes a first region Rf and a second region R1f, defined by the groove1112D. The first region Rf is located on the side of the lead2, in the y-direction. The shape of the first region Rf is not specifically limited. In the illustrated example, the first region Rf has an elongate rectangular shape having the long sides extending along the y-direction, as viewed in the z-direction. The second region R1fis located on the opposite side of the lead2with respect to the first region Rf, in the y-direction. The shape of the second region R1fis not specifically limited. In the illustrated example, the second region R1fhas a rectangular shape, as viewed in the z-direction.

The three first regions Rd, Re, and Rf overlap with each other, as viewed in the x-direction. In addition, in the illustrated example, the three first regions Rd, Re, and Rf generally coincide with each other, as viewed in the x-direction. Here, the expression “generally coincide” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first region Rd, Re, or Rf in the y-direction). The three second regions R1d, R1e, and R1foverlap with each other, as viewed in the x-direction. In the illustrated example, further, the three second regions R1d, R1e, and R1fgenerally coincide with each other, as viewed in the x-direction. Here, the expression “generally coincide” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second region R1d, R1e, or R1fin the y-direction).

The sizes of the three first regions Rd, Re, and Rf and the three second regions R1d, R1e, and R1fare not specifically limited. In the illustrated example, the size y1of the first regions Rd, Re, and Rf in the y-direction is larger than the size y2of the second regions R1d, R1e, and R1fin the y-direction.

In this variation, the semiconductor chip4A is located on the first region Ra. The semiconductor chip4B is located on the first region Rb. The semiconductor chip4C is located on the first region Rc. The diode41A is mounted on the second region R1a. The diode41B is mounted on the second region R1b. The diode41C is mounted on the second region R1c. In the illustrated example, the semiconductor chip4A is mounted at a position on the side of the lead2, with respect to the center of the first region Ra in the y-direction. The semiconductor chip4B is mounted at a position on the side of the lead2, with respect to the center of the first region Rb in the y-direction. The semiconductor chip4C is mounted at a position on the side of the lead2, with respect to the center of the first region Rc in the y-direction. The diode41A is mounted at a position on the opposite side of the lead2, with respect to the center of the second region R1ain the y-direction. The diode41B is mounted at a position on the opposite side of the lead2, with respect to the center of the second region R1bin the y-direction. The diode41C is mounted at a position on the opposite side of the lead2, with respect to the center of the second region R1cin the y-direction.

The collector electrode of the semiconductor chip4A and the cathode electrode of the diode41A are connected to each other, via the first portion11A and the conductive bonding material83. The collector electrode of the semiconductor chip48and the cathode electrode of the diode41B are connected to each other, via the first portion11A and the conductive bonding material83. The collector electrode of the semiconductor chip4C and the cathode electrode of the diode41C are connected to each other, via the first portion11A and the conductive bonding material83.

In this variation, the first wire91A includes a first portion911A and a second portion912A, each of which will be described hereunder. An end of the first portion911A is connected to the emitter electrode of the semiconductor chip4A, and the other end is connected to the anode electrode of the diode41A. In the illustrated example, the first portion911A extends along the y-direction. An end of the second portion912A is connected to the anode electrode of the diode41A, and the other end is connected to the fourth portion14B of the lead1B. In the illustrated example, the second portion912A is inclined with respect to the x-direction and the y-direction.

In this variation, the first wire91B includes a first portion911B and a second portion912B, each of which will be described hereunder. An end of the first portion911B is connected to the emitter electrode of the semiconductor chip4B, and the other end is connected to the anode electrode of the diode41B. In the illustrated example, the first portion911B extends along the y-direction. An end of the second portion912B is connected to the anode electrode of the diode41B, and the other end is connected to the fourth portion14C of the lead1C. In the illustrated example, the second portion912B is inclined with respect to the x-direction and the y-direction.

In this variation, the first wire91C includes a first portion911C and a second portion912C, each of which will be described hereunder. An end of the first portion911C is connected to the emitter electrode of the semiconductor chip4C, and the other end is connected to the anode electrode of the diode41C. In the illustrated example, the first portion911C extends along the y-direction. An end of the second portion912C is connected to the anode electrode of the diode41C, and the other end is connected to the fourth portion14D of the lead1D. In the illustrated example, the second portion912C is inclined with respect to the x-direction and the y-direction.

In this variation, the gate electrode of the semiconductor chip4A and the control chip4G are connected via the second wire92G, and the emitter electrode of the semiconductor chip4A and the control chip4G are connected via the second wire92G.

In this variation, the gate electrode of the semiconductor chip4B and the control chip4G are connected via the second wire92G, and the emitter electrode of the semiconductor chip4B and the control chip4G are connected via the second wire92G.

In this variation, the gate electrode of the semiconductor chip4C and the control chip4G are connected via the second wire92GG, and the emitter electrode of the semiconductor chip4C and the control chip4G are connected via the second wire92.

In this variation, the gate electrode of the semiconductor chip4D and the control chip4H are connected via the second wire92H. The gate electrode of the semiconductor chip4E and the control chip4H are connected via the second wire92H. The gate electrode of the semiconductor chip4F and the control chip4H are connected via the second wire92H.

The collector electrode of the semiconductor chip4D and the cathode electrode of the diode41D are connected to each other, via the first portion11B and the conductive bonding material83. The collector electrode of the semiconductor chip4E and the cathode electrode of the diode41E are connected to each other, via the first portion11C and the conductive bonding material83. The collector electrode of the semiconductor chip4F and the cathode electrode of the diode41F are connected to each other, via the first portion11D and the conductive bonding material83.

In this variation, the first wire91D includes a first portion911D and a second portion912D, each of which will be described hereunder. An end of the first portion911D is connected to the emitter electrode of the semiconductor chip4D, and the other end is connected to the anode electrode of the diode41D. In the illustrated example, the first portion911D extends along the y-direction. An end of the second portion912D is connected to the anode electrode of the diode41D, and the other end is connected to the fourth portion14E of the lead1E. In the illustrated example, the second portion912D is inclined with respect to the x-direction and the y-direction.

In this variation, the first wire91E includes a first portion911E and a second portion912E, each of which will be described hereunder. An end of the first portion911E is connected to the emitter electrode of the semiconductor chip4E, and the other end is connected to the anode electrode of the diode41E. In the illustrated example, the first portion911E extends along the y-direction. An end of the second portion912E is connected to the anode electrode of the diode41E, and the other end is connected to the fourth portion14F of the lead1F. In the illustrated example, the second portion912E is inclined with respect to the x-direction and the y-direction.

In this variation, the first wire91F includes a first portion911F and a second portion912F, each of which will be described hereunder. An end of the first portion911F is connected to the emitter electrode of the semiconductor chip4F, and the other end is connected to the anode electrode of the diode41F. In the illustrated example, the first portion911F extends along the y-direction. An end of the second portion912F is connected to the anode electrode of the diode41F, and the other end is connected to the fourth portion14G of the lead1G. In the illustrated example, the second portion912F is inclined with respect to the x-direction and the y-direction.

Second Embodiment

Referring toFIG. 35toFIG. 57, a semiconductor device according to a second embodiment of the present disclosure will be described. The semiconductor device A2according to this embodiment includes a plurality of leads1, a plurality of leads2, a substrate3, a plurality of semiconductor chips4, a diode41, a plurality of control chips4, a transmission circuit chip4I, a primary-side circuit chip4J, a plurality of diodes49, a conductive section5, a plurality of bonding sections6, a plurality of first wires91, a plurality of second wires92, a plurality of third wires93, a plurality of fourth wires94, a plurality of fifth wires95, a plurality of sixth wires96, a plurality of seventh wires97, and an encapsulating resin7.

The semiconductor device A2according to this embodiment is different from the semiconductor device A1according to the first embodiment, in further including a transformer690, in the locations of the plurality of leads1and the plurality of leads2, and in the configuration of the conductive section5. In the description of this embodiment, the similar elements to those of the first embodiment will be given the same numeral, and a part or the whole of the description thereof may be omitted.

FIG. 35is a perspective view showing the semiconductor device A2.FIG. 36is a plan view showing the semiconductor device A2.FIG. 37is a bottom view showing the semiconductor device A2.FIG. 38is a side view showing the semiconductor device A2.FIG. 39is a partial plan view of the semiconductor device A2.FIG. 40is a cross-sectional view taken along a line XL-XL inFIG. 39.FIG. 41is a cross-sectional view taken along a line XLI-XLI inFIG. 39.FIG. 42is a partial plan view of the semiconductor device A2.FIG. 43is a partial plan view of the semiconductor device A2.FIG. 44is a schematic circuit diagram showing an electrical configuration of the semiconductor device A2.FIG. 45is a partial plan view of the semiconductor device A2.FIG. 46is an enlarged partial plan view of the semiconductor device A2.FIG. 47is an enlarged partial plan view of the semiconductor device A2.FIG. 48is an enlarged partial plan view of a substrate of the semiconductor device A2.FIG. 49is a schematic circuit diagram showing an electrical configuration of the semiconductor device A2.FIG. 50is a schematic circuit diagram showing an electrical configuration of a circuit board, on which the semiconductor device A2is mounted.FIG. 51is a schematic perspective view showing a first transmission circuit chip, a primary-side circuit chip, and a control chip of the semiconductor device A2.FIG. 52is a partial plan view of the first transmission circuit chip.FIG. 53is a partial bottom view of the first transmission circuit chip.FIG. 54is a partial plan view of the first transmission circuit chip.FIG. 55is a cross-sectional view taken along a line LV-LV inFIG. 52.FIG. 56is an enlarged partial cross-sectional view of the first transmission circuit chip.FIG. 57includes graphs indicating a relation between a thickness of an interlayer film and a breakdown voltage of the first transmission circuit chip.

The shape, size, and material of the substrate3are not specifically limited, but may be, for example, similar to those of the substrate3in the semiconductor device A1.

Regarding the conductive section5according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the conductive section5according to the first embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment.

The conductive section5is formed on the substrate3. In this embodiment, the conductive section5is formed on the first face31of the substrate3. The conductive section5is formed of a conductive material. The conductive material to form the conductive section5is not specifically limited. Examples of the conductive material to form the conductive section5include materials containing silver (Ag), copper (Cu), or gold (Au). In the subsequent description, it will be assumed that the conductive section5contains silver. However, the conductive section5may contain copper instead of silver, or gold instead of silver or copper. Alternatively, the conductive section5may contain Ag—Pt or Ag—Pd. The forming method of the conductive section5is not limited. For example, the conductive section5may be formed by sintering a paste containing the mentioned metal. The thickness of the conductive section5is not specifically limited, but may be, for example, approximately 5 μm to 30 μm.

In this embodiment, as shown inFIG. 39,FIG. 44toFIG. 47, andFIG. 48, the conductive section5includes wirings50A to50U, wirings50ato50f, a first base portion55, a second base portion56, and a third base portion58, each of which will be described hereunder.

The shape of the first base portion55is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first base portion55has a rectangular shape. In the illustrated example, the first base portion55has an elongate rectangular shape, having the long sides extending along the x-direction.

The shape of the second base portion56is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second base portion56has a rectangular shape. In the illustrated example, the second base portion56has an elongate rectangular shape, having the long sides extending along the x-direction.

The second base portion56is located on the side of the fourth face34with respect to the first base portion55, in the x-direction. In the illustrated example, the edge of the second base portion56on the side of the sixth face36in the y-direction is located generally at the same position as the edge of the first base portion55on the side of the sixth face36, in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located exactly at the same position, or being deviated by within ±5% of the characteristic size (size of the first base portion55or second base portion56in the y-direction). In the illustrated example, the edge of the second base portion56on the side of the fifth face35in the y-direction is located generally at the same position as the edge of the first base portion55on the side of the fifth face35, in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located exactly at the same position, or being deviated by within ±5% of the characteristic size (size of the first base portion55or second base portion56in the y-direction). In the illustrated example, the center of the second base portion56in the y-direction is located generally at the same position in the y-direction, as the center of the first base portion55in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located exactly at the same position, or being deviated by within ±5% of the characteristic size (size of the first base portion55or second base portion56in the y-direction).

The connecting portion57is interposed between the first base portion55and the second base portion56and, in the illustrated example, connecting the first base portion55and the second base portion56. In the illustrated example, the connecting portion57is located between the first base portion55and the second base portion56, as viewed in the y-direction. The shape of the connecting portion57is not specifically limited. In the illustrated example, the connecting portion57includes a first portion571, a second portion572, and a third portion573, each of which will be described hereunder.

The first portion571is located between the first base portion55and the second base portion56, as viewed in the y-direction. The shape of the first portion571is not specifically limited. In the illustrated example, the first portion571has a strip shape extending along the x-direction. In the illustrated example, the size of the first portion571in the y-direction is constant.

The second portion572is interposed between the first portion571and the first base portion55and, in the illustrated example, connected to the first portion571and the first base portion55. The second portion572is larger in size in the y-direction, than the first portion571. The shape of the second portion572is not specifically limited. In the illustrated example, the size of the second portion572in the y-direction increases in the direction from the first portion571toward the first base portion55.

The third portion573is interposed between the first portion571and the second base portion56and, in the illustrated example, connected to the first portion571and the second base portion56. The third portion573is larger in size in the y-direction, than the first portion571. The shape of the third portion573is not specifically limited. In the illustrated example, the size of the third portion573in the y-direction increases in the direction from the first portion571toward the second base portion56.

In the illustrated example, the respective edges of the first base portion55, the second base portion56, and the connecting portion57on the side of the sixth face36in the y-direction are located generally at the same position in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located exactly at the same position, or being deviated by within ±5% of the characteristic size (size of the first base portion55or second base portion56in the y-direction).

The shape of the third base portion58is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the third base portion58includes two edges extending along the x-direction and two edges extending along the y-direction, the edges along the x-direction constituting the long sides. In addition, the illustrated third base portion58includes edges581and582. One of the edges581and582corresponds to one of the two edges extending along the y-direction. The edge582is located on the side of the fifth face35in the y-direction, with respect to the edge581. Further, the edge582is located on the side of the third face33in the x-direction, with respect to the edge581.

The edge of the third base portion58on the side of the third face33in the x-direction is located on the side of the fourth face34in the x-direction, with respect to the edge of the second base portion56on the side of the third face33in the x-direction. In addition, the edge of the third base portion58on the side of the fourth face34in the x-direction is located on the side of the fourth face34in the x-direction, with respect to the edge of the second base portion56on the side of the fourth face34in the x-direction. The third base portion58is spaced apart from the first base portion55, as viewed in the x-direction.

The wiring50A includes a first portion51A, a second portion52A, and a third portion53A, each of which will be described hereunder.

The first portion51A is located on the side of the third face33in the x-direction with respect to the first base portion55, and spaced therefrom. The shape of the first portion51A is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51A has an elongate strip shape extending along the x-direction. In the illustrated example, in addition, the first portion51A overlaps with the first base portion55, as viewed in the x-direction. The center of the first portion51A in the y-direction is located on the side of the fifth face35, with respect to the center of the first base portion55in the y-direction.

The second portion52A is located on the side of the fifth face35in the y-direction, and on the side of the third face33in the x-direction, with respect to the first portion51A. The shape of the second portion52A is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51A has a rectangular shape.

The fourth portion54A is interposed between the first portion51A and the second portion52A and, in the illustrated example, connected to the edge of the second portion52A on the side of the fourth face34in the x-direction. The shape of the fourth portion54A is not specifically limited. The fourth portion54A is spaced apart from the first portion51A, as viewed in the x-direction.

The fifth portion55A is interposed between the first portion51A and the fourth portion54A and, in the illustrated example, connected to the first portion51A and the fourth portion54A. The shape of the fifth portion55A is not specifically limited. In the illustrated example, the fifth portion55A has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50B includes a first portion51B, a second portion52B, a third portion53B, a fourth portion54B, and a fifth portion55B, each of which will be described hereunder.

The shape of the first portion51B is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. The first portion51B is located on the side of the third face33in the x-direction, and on the side of the fifth face35in the y-direction, with respect to the first base portion55, and spaced therefrom. In the illustrated example, a part of the first portion51B overlaps with the first base portion55as viewed in the x-direction, and also as viewed in the y-direction. The first portion51B includes portions respectively opposed to the edge of the first base portion55on the side of the third face33in a view in the x-direction, and the edge on the side of the fifth face35in the y-direction.

The second portion52B is located on the side of the fifth face35with respect to the first portion51B, in the y-direction. The second portion52B overlaps with the first portion51B, as viewed in the y-direction. The shape of the second portion52B is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52B has a rectangular shape.

The third portion53B is interposed between the first portion51B and the second portion52B and, in the illustrated example, connected to the edge of the first portion51B on the side of the third face33in the x-direction. The shape of the third portion53B is not specifically limited. In the illustrated example, the third portion53B has a strip shape extending along the x-direction. The third portion53B is spaced apart from the second portion52B, as viewed in the x-direction.

The fourth portion54B is interposed between the first portion51B and the second portion52B and, in the illustrated example, connected to the edge of the second portion52B on the side of the fourth face34in the x-direction. The shape of the fourth portion54B is not specifically limited. The fourth portion54B is spaced apart from the first portion51B, as viewed in the x-direction.

The fifth portion55B is interposed between the first portion51B and the fourth portion54B and, in the illustrated example, connected to the third portion53B and the fourth portion54B. The shape of the fifth portion55A is not specifically limited. In the illustrated example, the fifth portion55A has a strip shape inclined with respect to the x-direction and the y-direction. In the illustrated example, the fifth portion55A and the fifth portion55B are generally parallel to each other. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%.

The wiring50C includes a first portion51C, a second portion52C, a third portion53C, a fourth portion54C, and a fifth portion55C, each of which will be described hereunder.

The first portion51C is located on the side of the fifth face35in the y-direction, with respect to the first base portion55with a spacing therefrom, and on the side of the fourth face34in the x-direction, with respect to the first portion51B with a spacing therefrom. In the illustrated example, the first portion51C overlaps with the first base portion55, as viewed in the y-direction. The shape of the first portion51C is not specifically limited. In the illustrated example, the first portion51C has a strip shape extending along the y-direction.

The second portion52C is located on the side of the fifth face35with respect to the first portion51C, in the y-direction. The second portion52C is located between the second portions52A and52B, and the first portion51C, as viewed in the y-direction. The second portion52C is spaced apart from the second portion52B toward the fifth face35, as viewed in the x-direction. The shape of the second portion52C is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52C has a rectangular shape.

The third portion53C is interposed between the first portion51C and the second portion52C and, in the illustrated example, connected to the end portion of the first portion51C on the side of the fifth face35in the y-direction. The shape of the third portion53C is not specifically limited. In the illustrated example, the third portion53C is inclined with respect to the x-direction and the y-direction. The third portion53C is spaced apart from the second portion52C, as viewed in the x-direction.

The fourth portion54C is interposed between the first portion51C and the second portion52C and, in the illustrated example, connected to the edge of the second portion52C on the side of the sixth face36in the y-direction. The shape of the fourth portion54C is not specifically limited. In the illustrated example, the fourth portion54C has a strip shape inclined with respect to the x-direction and the y-direction. The fourth portion54C is spaced apart from the first portion51C, as viewed in the x-direction.

The fifth portion55C is interposed between the first portion51C and the fourth portion54C and, in the illustrated example, connected to the third portion53C and the fourth portion54C. The shape of the fifth portion55C is not specifically limited. In the illustrated example, the fifth portion55C has a strip shape extending along the x-direction.

The wiring50D includes a first portion51D, a second portion52D, a third portion53D, a fourth portion54D, and a fifth portion55D, each of which will be described hereunder.

The shape of the first portion51D is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51D has a rectangular shape. The first portion51D is located on the side of the fifth face35in the y-direction, with respect to the first base portion55, and spaced therefrom. The first portion51D is located on the side of the fourth face34in the x-direction with respect to the first portion51C, and spaced therefrom. In addition, in the illustrated example, the first portion51D overlaps with the first portion51C as viewed in the x-direction, and with the first base portion55as viewed in the y-direction.

The second portion52D is located on the side of the fifth face35with respect to the first portion51D, in the y-direction. The second portion52D is located on the side of the fourth face34in the x-direction with respect to the second portion52C, and spaced therefrom. The second portion52D overlaps with the second portion52C, as viewed in the x-direction. The second portion52D is located between the second portions52A,52B, and the first portion51B, as viewed in the y-direction. The shape of the second portion52D is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52E has a rectangular shape.

The third portion53D is interposed between the first portion51D and the second portion52D and, in the illustrated example, connected to the end portion of the first portion51D on the side of the fifth face35in the y-direction. The shape of the third portion53D is not specifically limited. In the illustrated example, the third portion53D is inclined with respect to the x-direction and the y-direction. The third portion53D is spaced apart from the second portion52D, as viewed in the x-direction. In addition, the third portion53D is generally parallel to the third portion53C. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%.

The fourth portion54D is interposed between the first portion51D and the second portion52D and, in the illustrated example, connected to the edge of the second portion52D on the side of the sixth face35in the y-direction. The shape of the fourth portion54D is not specifically limited. In the illustrated example, the fourth portion54D has a strip shape inclined with respect to the x-direction and the y-direction. The fourth portion54D is spaced apart from the first portion51D, as viewed in the x-direction. In addition, the fourth portion54D is generally parallel to the fourth portion54C. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%.

The fifth portion55D is interposed between the third portion53D and the fourth portion54D and, in the illustrated example, connected to the third portion53D and the fourth portion54D. The shape of the fifth portion55D is not specifically limited. In the illustrated example, the fifth portion55D has a strip shape extending along the x-direction.

The wiring50E includes a first portion51E, a second portion52E, a third portion53E, a fourth portion54E, and a fifth portion55E, each of which will be described hereunder.

The first portion51E is located on the side of the fifth face35in the y-direction, with respect to the first base portion55with a spacing therefrom, and on the side of the fourth face34in the x-direction, with respect to the first portion51D with a spacing therefrom. In the illustrated example, the first portion51B overlaps with the first base portion55, as viewed in the y-direction. The shape of the first portion51E is not specifically limited. In the illustrated example, the first portion51E has a strip shape extending along the y-direction.

The second portion52E is located on the side of the fifth face35with respect to the first portion51E, in the y-direction. The second portion52E is located on the side of the fifth face35with respect to the second portion52C and spaced therefrom, as viewed in the x-direction. The shape of the second portion52E is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52B has a rectangular shape.

The third portion53E is interposed between the first portion51E and the second portion52E and, in the illustrated example, connected to the end portion of the first portion51E on the side of the fifth face35in the y-direction. The shape of the third portion53E is not specifically limited. In addition, the third portion53E is generally parallel to the third portion53D. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%.

The fourth portion54E is interposed between the first portion51E and the second portion52E and, in the illustrated example, connected to the edge of the second portion52E on the side of the sixth face36in the y-direction. The shape of the fourth portion54E is not specifically limited. In the illustrated example, the fourth portion54E has a strip shape inclined with respect to the x-direction and the y-direction. In addition, the fourth portion54E is generally parallel to the fourth portion54D. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%.

The fifth portion55E is interposed between the first portion51E and the fourth portion54E and, in the illustrated example, connected to the third portion53E and the fourth portion54E. The shape of the fifth portion55E is not specifically limited. In the illustrated example, the fifth portion55E has a strip shape extending along the x-direction.

The wiring50F includes a first portion51F, a second portion52F, a third portion53F, a fourth portion54F, and a fifth portion55F, each of which will be described hereunder.

The shape of the first portion51F is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. The first portion51F is located on the side of the fifth face35in the y-direction, with respect to the first base portion55, and spaced therefrom. The first portion51F is located on the side of the fourth face34in the x-direction with respect to the first portion51E, and spaced therefrom. In addition, in the illustrated example, the first portion51F overlaps with the first portion51E as viewed in the x-direction, and with the first base portion55as viewed in the y-direction.

The second portion52F is located on the side of the fifth face35with respect to the first portion51F, in the y-direction. The second portion52F is located on the side of the fourth face34in the x-direction with respect to the second portion52E, and spaced therefrom. The second portion52F overlaps with the second portion52E, as viewed in the x-direction. The second portion52F overlaps with the first portion51B, as viewed in the y-direction. The shape of the second portion52F is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52F has a rectangular shape.

The third portion53F is interposed between the first portion51F and the second portion52F and, in the illustrated example, connected to the end portion of the first portion51F on the side of the fifth face35in the y-direction. The shape of the third portion53F is not specifically limited. In the illustrated example, the third portion53F is inclined with respect to the x-direction and the y-direction. The third portion53F is spaced apart from the second portion52F, as viewed in the x-direction. In addition, the third portion53F is generally parallel to the third portion53E. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%.

The fourth portion54F is interposed between the first portion51F and the second portion52F and, in the illustrated example, connected to the edge of the second portion52F on the side of the sixth face36in the y-direction. The shape of the fourth portion54F is not specifically limited. In the illustrated example, the fourth portion54F has a strip shape inclined with respect to the x-direction and the y-direction. The fourth portion54F is spaced apart from the first portion51F, as viewed in the x-direction. In addition, the fourth portion54F is generally parallel to the fourth portion54E. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%.

The fifth portion55F is interposed between the third portion53F and the fourth portion54F and, in the illustrated example, connected to the third portion53F and the fourth portion54F. The shape of the fifth portion55F is not specifically limited. In the illustrated example, the fifth portion55F has a strip shape extending along the x-direction.

The wiring50G includes a second portion52G, a third portion53G, a fourth portion54G, a fifth portion55G, and a sixth portion56G, each of which will be described hereunder.

The second portion52G is located on the side of the fifth face35with respect to the first base portion55, in the y-direction. The second portion52G is located on the side of the fourth face34in the x-direction with respect to the second portion52F, and spaced therefrom. The second portion52G overlaps with the second portion52F, as viewed in the x-direction. The second portion52G overlaps with the first base portion55, as viewed in the y-direction. The shape of the second portion52G is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52G has a rectangular shape.

The third portion53G is interposed between the first base portion55and the second portion52G and, in the illustrated example, connected to the edge of the first base portion55on the side of the fifth face35in the y-direction. The shape of the third portion53G is not specifically limited. In the illustrated example, the third portion53G has a strip shape extending along the y-direction. The edge of the third portion53G on the side of the fourth face34in the x-direction generally coincides with the edge of the first base portion55on the side of the fourth face34in the x-direction, as viewed in the y-direction. Here, the expression “generally coincides” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion53G or first base portion55in the x-direction). The third portion53G is spaced apart from the second portion52G, as viewed in the x-direction.

The fourth portion54G is interposed between the third portion53G and the second portion52G and, in the illustrated example, connected to the edge of the second portion52G on the side of the sixth face36in the y-direction. The shape of the fourth portion54G is not specifically limited. In the illustrated example, the fourth portion54G has a strip shape inclined with respect to the x-direction and the y-direction. The fourth portion54G is spaced apart from the first base portion55, as viewed in the x-direction. In addition, the fourth portion54G is generally parallel to the third portion54F. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%.

The fifth portion55G is interposed between the third portion53G and the fourth portion54G and, in the illustrated example, connected to the third portion53G. The shape of the fifth portion55G is not specifically limited. In the illustrated example, the fifth portion55G has a strip shape inclined with respect to the x-direction and the y-direction. The fifth portion55G is generally parallel to the third portion53F. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%.

The sixth portion56G is interposed between the fifth portion55G and the fourth portion54G and, in the illustrated example, connected to the fifth portion55G and the fourth portion54G. The shape of the sixth portion56G is not specifically limited. In the illustrated example, the sixth portion56G has a strip shape extending along the x-direction.

The wiring50H includes a first portion51H, a second portion52H, a third portion53H, and a fourth portion54H, each of which will be described hereunder.

The first portion51H is located between the first base portion55and the second base portion56, as viewed in the y-direction. In the illustrated example, a part of the first portion51H overlaps with the first base portion55and the second base portion56, as viewed in the x-direction. The shape of the first portion51H is not specifically limited. In the illustrated example, the first portion51H has a strip shape extending in the x-direction.

The second portion52H is located on the side of the fifth face35in the y-direction, and on the side of the third face33in the x-direction, with respect to the first portion51H. The second portion52H is located on the side of the fourth face34in the x-direction with respect to the second portion52G. The second portion52H overlaps with the second portion52G, as viewed in the x-direction. The shape of the second portion52H is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52H has a rectangular shape.

The third portion53H is interposed between the first portion51H and the second portion52H and, in the illustrated example, connected to the edge of the first portion51H on the side of the fifth face35in the y-direction, at a position on the side of the third face33, in the x-direction. The shape of the third portion53H is not specifically limited. In the illustrated example, the third portion53H has a strip shape extending along the y-direction.

The fourth portion54H is interposed between the first portion51H and the second portion52H and, in the illustrated example, connected to the third portion53H and the second portion52H. The shape of the fourth portion54H is not specifically limited. In the illustrated example, the fourth portion54H has a strip shape inclined with respect to the x-direction and the y-direction. The fourth portion54H is generally parallel to the fifth portion55G. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%.

The wiring50I includes a first portion51I, a second portion52I, a third portion53I, a fourth portion54I, and a fifth portion55I, each of which will be described hereunder.

The first portion51I is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51I overlaps with the third base portion58, as viewed in the y-direction. The shape of the first portion51I is not specifically limited. In the illustrated example, the first portion51I has a rectangular shape.

The second portion52I is located on the side of the fifth face35with respect to the first portion51I, in the y-direction. The second portion52I is located on the side of the fourth face34in the x-direction with respect to the second portion52H, and spaced therefrom. The second portion52I is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52I overlaps with the second portion52H, as viewed in the x-direction. The shape of the second portion52I is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52I has a rectangular shape.

The third portion53I is interposed between the first portion51I and the second portion52I and, in the illustrated example, connected to the edge of the first portion51I on the side of the third face33in the x-direction. The shape of the third portion53I is not specifically limited. In the illustrated example, the third portion53I has a strip shape extending along the x-direction. An end portion of the third portion53I includes a portion extending from the third base portion58toward the third face33, as viewed in the y-direction.

The fourth portion54I is interposed between the first portion51I and the second portion52I and, in the illustrated example, connected to the edge of the second portion52I on the side of the sixth face36in the y-direction. The shape of the fourth portion54I is not specifically limited. In the illustrated example, the fourth portion54I has a strip shape extending along the y-direction. The fourth portion54I is spaced apart from the first portion51I, as viewed in the x-direction.

The fifth portion55I is interposed between the third portion53I and the fourth portion54I and, in the illustrated example, connected to the third portion53I and the fourth portion54I. The shape of the fifth portion55I is not specifically limited. In the illustrated example, the fifth portion55I has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50J includes a first portion51J, a second portion52J, a third portion53J, a fourth portion54J, and a fifth portion55J, each of which will be described hereunder.

The first portion51J is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51J overlaps with the third base portion58, as viewed in the y-direction. The first portion51J is located on the side of the fourth face34in the x-direction with respect to the first portion51I, and spaced therefrom. The first portion51J overlaps with the first portion51I, as viewed in the x-direction. The shape of the first portion51J is not specifically limited. In the illustrated example, the first portion51J has a rectangular shape.

The second portion52J is located on the side of the fifth face35with respect to the first portion51J, in the y-direction. The second portion52J is located on the side of the fourth face34in the x-direction with respect to the second portion52I, and spaced therefrom. The second portion52J is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52J overlaps with the second portion52I, as viewed in the x-direction. The shape of the second portion52J is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52J has a rectangular shape.

The third portion53J is interposed between the first portion51J and the second portion52J and, in the illustrated example, connected to the edge of the first portion51J on the side of the third face33in the x-direction. The shape of the third portion53J is not specifically limited. In the illustrated example, the third portion53J has a strip shape extending along the x-direction. An end portion of the third portion53J includes a portion extending from the third base portion58toward the third face33, as viewed in the y-direction. The third portion53J is located on the side of the fifth face35in the y-direction with respect to the third portion53I, and spaced therefrom.

The fourth portion54J is interposed between the first portion51J and the second portion52J and, in the illustrated example, connected to the edge of the second portion52J on the side of the sixth face35in the y-direction. The shape of the fourth portion54J is not specifically limited. In the illustrated example, the fourth portion54J has a strip shape extending along the y-direction. The fourth portion54J is spaced apart from the first portion51J, as viewed in the x-direction. The fourth portion54J is longer than the fourth portion54I.

The fifth portion55J is interposed between the third portion53J and the fourth portion54J and, in the illustrated example, connected to the third portion53J and the fourth portion54J. The shape of the fifth portion55J is not specifically limited. In the illustrated example, the fifth portion55J has a strip shape inclined with respect to the x-direction and the y-direction. The fifth portion55J is generally parallel to the fifth portion55I. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%. The fifth portion55J is shorter than the fifth portion55I.

The wiring50K includes a first portion51K, a second portion52K, a third portion53K, a fourth portion54K, and a fifth portion55K, each of which will be described hereunder.

The first portion51K is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51K overlaps with the third base portion58, as viewed in the y-direction. The first portion51K is located on the side of the fourth face34in the x-direction with respect to the first portion51J, and spaced therefrom. The first portion51K overlaps with the first portion51J, as viewed in the x-direction. The shape of the first portion51K is not specifically limited. In the illustrated example, the first portion51K has a rectangular shape.

The second portion52K is located on the side of the fifth face35with respect to the first portion51K, in the y-direction. The second portion52K is located on the side of the fourth face34in the x-direction with respect to the second portion52J, and spaced therefrom. The second portion52K overlaps with the third base portion58, as viewed in the y-direction. The second portion52K overlaps with the second portion52J, as viewed in the x-direction. The shape of the second portion52K is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52K has a rectangular shape.

The third portion53K is interposed between the first portion51K and the second portion52K and, in the illustrated example, connected to the edge of the first portion51K on the side of the third face33in the x-direction. The shape of the third portion53K is not specifically limited. In the illustrated example, the third portion53K has a strip shape extending along the x-direction. The third portion53K overlaps with the third base portion58, as viewed in the y-direction. The third portion53K is located on the side of the fifth face35in the y-direction with respect to the third portion53J, and spaced therefrom.

The fourth portion54K is interposed between the first portion51K and the second portion52K and, in the illustrated example, connected to the edge of the second portion52K on the side of the sixth face36in the y-direction. The shape of the fourth portion54K is not specifically limited. In the illustrated example, the fourth portion54K has a strip shape extending along the y-direction. The fourth portion54K is spaced apart from the first portion51K, as viewed in the x-direction. The fourth portion54K is longer than the fourth portion54J.

The fifth portion55K is interposed between the third portion53K and the fourth portion54K and, in the illustrated example, connected to the third portion53K and the fourth portion54K. The shape of the fifth portion55K is not specifically limited. In the illustrated example, the fifth portion55K has a strip shape inclined with respect to the x-direction and the y-direction. The fifth portion55K is generally parallel to the fifth portion55J. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%. The fifth portion55K is shorter than the fifth portion55J.

The wiring50L includes a first portion51L, a second portion52L, a third portion53L, a fourth portion54L, and a fifth portion55L, each of which will be described hereunder.

The first portion51L is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51L overlaps with the third base portion58, as viewed in the y-direction. The first portion51L is located on the side of the fourth face34in the x-direction with respect to the first portion51K, and spaced therefrom. The first portion51L overlaps with the first portion51K, as viewed in the x-direction. The shape of the first portion51L is not specifically limited. In the illustrated example, the first portion51L has a rectangular shape.

The second portion52L is located on the side of the fifth face35with respect to the first portion51L, in the y-direction. The second portion52L is located on the side of the fourth face34in the x-direction with respect to the second portion52K, and spaced therefrom. The second portion52L overlaps with the third base portion58, as viewed in the y-direction. The second portion52L overlaps with the second portion52K, as viewed in the x-direction. The shape of the second portion52L is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52L has a rectangular shape.

The third portion53L is interposed between the first portion51L and the second portion52L and, in the illustrated example, connected to the edge of the first portion51L on the side of the fifth face35in the y-direction. The shape of the third portion53L is not specifically limited. In the illustrated example, the third portion53L has a strip shape extending along the y-direction. The third portion53L overlaps with the third base portion58, as viewed in the y-direction.

The fourth portion54L is interposed between the first portion51L and the second portion52L and, in the illustrated example, connected to the edge of the second portion52L on the side of the sixth face36in the y-direction. The shape of the fourth portion54L is not specifically limited. In the illustrated example, the fourth portion54L has a strip shape extending along the y-direction. The fourth portion54L is spaced apart from the first portion51L, as viewed in the x-direction.

The fifth portion55L is interposed between the third portion53L and the fourth portion54L and, in the illustrated example, connected to the third portion53L and the fourth portion54L. The shape of the fifth portion55L is not specifically limited. In the illustrated example, the fifth portion55L has a strip shape inclined with respect to the x-direction and the y-direction. The fifth portion55L is generally parallel to the fifth portion55K. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%. The fifth portion55L is longer than the fifth portion55K.

The wiring50M includes a first portion51M, a second portion52M, and a third portion53M, each of which will be described hereunder.

The first portion51M is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51M overlaps with the third base portion58, as viewed in the y-direction. The first portion51M is located on the side of the fourth face34in the x-direction with respect to the first portion51L, and spaced therefrom. The first portion51M overlaps with the first portion51L, as viewed in the x-direction. The shape of the first portion51M is not specifically limited. In the illustrated example, the first portion51M has a rectangular shape.

The second portion52M is located on the side of the fifth face35with respect to the first portion51M, in the y-direction. The second portion52M is located on the side of the fourth face34in the x-direction with respect to the second portion52L, and spaced therefrom. The second portion52M overlaps with the third base portion58, as viewed in the y-direction. The second portion52M overlaps with the second portion52L, as viewed in the x-direction. The shape of the second portion52M is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52M has a rectangular shape.

The third portion53M is interposed between the first portion51M and the second portion52M and, in the illustrated example, connected to the first portion51M and the second portion52M. The shape of the third portion53M is not specifically limited. In the illustrated example, the third portion53M has a strip shape extending along the y-direction. The third portion53M overlaps with the third base portion58, as viewed in the y-direction.

The wiring50N includes a first portion51N, a second portion52N, a third portion53N, a fourth portion54N, and a fifth portion55N, each of which will be described hereunder.

The first portion51N is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51N overlaps with the third base portion58, as viewed in the y-direction. The first portion51N is located on the side of the fourth face34in the x-direction with respect to the first portion51M, and spaced therefrom. The first portion51N overlaps with the first portion51M, as viewed in the x-direction. The shape of the first portion51N is not specifically limited. In the illustrated example, the first portion51N has a rectangular shape.

The second portion52N is located on the side of the fifth face35with respect to the first portion51N, in the y-direction. The second portion52N is located on the side of the fourth face34in the x-direction with respect to the second portion52M, and spaced therefrom. The second portion52N overlaps with the third base portion58, as viewed in the y-direction. The second portion52N overlaps with the second portion52M, as viewed in the x-direction. The shape of the second portion52N is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52N has a rectangular shape.

The third portion53N is interposed between the first portion51N and the second portion52N and, in the illustrated example, connected to the edge of the first portion51N on the side of the fifth face35in the y-direction. The shape of the third portion53N is not specifically limited. In the illustrated example, the third portion53N has a strip shape extending along the y-direction. The third portion53N overlaps with the third base portion58, as viewed in the y-direction.

The fourth portion54N is interposed between the first portion51N and the second portion52N and, in the illustrated example, connected to the edge of the second portion52N on the side of the sixth face36in the y-direction. The shape of the fourth portion54N is not specifically limited. In the illustrated example, the fourth portion54N has a strip shape extending along the y-direction. The fourth portion54N is spaced apart from the first portion51N, as viewed in the x-direction.

The fifth portion55N is interposed between the third portion53N and the fourth portion54N and, in the illustrated example, connected to the third portion53N and the fourth portion54N. The shape of the fifth portion55N is not specifically limited. In the illustrated example, the fifth portion55N has a strip shape inclined with respect to the x-direction and the y-direction.

The wiring50O includes a first portion51O, a second portion52O, a third portion53O, a fourth portion54O, and a fifth portion55O, each of which will be described hereunder.

The first portion51O is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51O overlaps with the third base portion58, as viewed in the y-direction. The first portion51O is located on the side of the fourth face34in the x-direction with respect to the first portion51N, and spaced therefrom. The first portion51O overlaps with the first portion51N, as viewed in the x-direction. The shape of the first portion51O is not specifically limited. In the illustrated example, the first portion51O has a rectangular shape.

The second portion52O is located on the side of the fifth face35with respect to the first portion51O, in the y-direction. The second portion52O is located on the side of the fourth face34in the x-direction with respect to the second portion52N, and spaced therefrom. The second portion52O overlaps with the third base portion58, as viewed in the y-direction. The second portion52O overlaps with the second portion52N, as viewed in the x-direction. The shape of the second portion52O is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52O has a rectangular shape.

The third portion53O is interposed between the first portion51O and the second portion52O and, in the illustrated example, connected to the edge of the first portion51O on the side of the fourth face34in the x-direction. The shape of the third portion53O is not specifically limited. In the illustrated example, the third portion53O has a strip shape extending along the x-direction. The third portion53O overlaps with the third base portion58, as viewed in the y-direction.

The fourth portion54O is interposed between the first portion51O and the second portion52O and, in the illustrated example, connected to the edge of the second portion52O on the side of the sixth face36in the y-direction. The shape of the fourth portion54O is not specifically limited. In the illustrated example, the fourth portion54O has a strip shape extending along the y-direction. The fourth portion54O is spaced apart from the first portion51O, as viewed in the x-direction.

The fifth portion55O is interposed between the third portion53O and the fourth portion54O and, in the illustrated example, connected to the third portion53O and the fourth portion54O. The shape of the fifth portion55O is not specifically limited. In the illustrated example, the fifth portion55O has a strip shape inclined with respect to the x-direction and the y-direction. The fifth portion55O is generally parallel to the fifth portion55N. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%.

The wiring50P includes a first portion51P, a second portion52P, a third portion53P, a fourth portion54P, and a fifth portion55P, each of which will be described hereunder.

The first portion51P is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51P overlaps with the third base portion58, as viewed in the y-direction. The first portion51P is located on the side of the fourth face34in the x-direction with respect to the first portion51O, and spaced therefrom. The first portion51P overlaps with the first portion51O, as viewed in the x-direction. The shape of the first portion51P is not specifically limited. In the illustrated example, the first portion51P has a rectangular shape.

The second portion52P is located on the side of the fifth face35with respect to the first portion51P, in the y-direction. The second portion52P is located on the side of the fourth face34in the x-direction with respect to the second portion52O, and spaced therefrom. The second portion52P is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52P overlaps with the second portion52O, as viewed in the x-direction. The shape of the second portion52P is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52P has a rectangular shape.

The third portion53P is interposed between the first portion51P and the second portion52P and, in the illustrated example, connected to the edge of the first portion51P on the side of the fourth face34in the x-direction. The shape of the third portion53P is not specifically limited. In the illustrated example, the third portion53P has a strip shape extending along the x-direction. An end portion of the third portion53P includes a portion extending from the third base portion58toward the fourth face34, as viewed in the y-direction.

The fourth portion54P is interposed between the first portion51P and the second portion52P and, in the illustrated example, connected to the edge of the second portion52P on the side of the sixth face36in the y-direction. The shape of the fourth portion54P is not specifically limited. In the illustrated example, the fourth portion54P has a strip shape extending along the y-direction. The fourth portion54P is spaced apart from the first portion51P, as viewed in the x-direction.

The fifth portion55P is interposed between the third portion53P and the fourth portion54P and, in the illustrated example, connected to the third portion53P and the fourth portion54P. The shape of the fifth portion55P is not specifically limited. In the illustrated example, the fifth portion55P has a strip shape inclined with respect to the x-direction and the y-direction. The fifth portion55P is generally parallel to the fifth portion55O. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%. The fifth portion55P is longer than the fifth portion55O.

The wiring50Q includes a first portion51Q, a second portion52Q, a third portion53Q, and a fourth portion54Q, each of which will be described hereunder.

The first portion51Q is located on the side of the fourth face34in the x-direction, with respect to the third base portion58. The first portion51Q overlaps with the edge582of the third base portion58, as viewed in the x-direction. The first portion51Q overlaps with the edge581of the third base portion58, as viewed in the y-direction. The shape of the first portion51Q is not specifically limited. In the illustrated example, the first portion51Q has a rectangular shape.

The second portion52Q is located on the side of the fifth face35with respect to the first portion51Q, in the y-direction. The second portion52Q is located on the side of the fourth face34in the x-direction with respect to the second portion52P, and spaced therefrom. The second portion52Q is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52Q overlaps with the second portion52P, as viewed in the x-direction. The shape of the second portion52Q is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52Q has a rectangular shape.

The third portion53Q is interposed between the first portion51Q and the second portion52Q and, in the illustrated example, connected to the edge of the first portion51Q on the side of the fourth face34in the x-direction. The shape of the third portion53Q is not specifically limited. In the illustrated example, the third portion53Q has a strip shape inclined with respect to the x-direction and the y-direction. The third portion53Q is spaced apart from the third base portion58toward the fourth face34, as viewed in the y-direction. The third portion53Q is generally parallel to the fifth portion55P. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%. The third portion53Q is longer and wider than the fifth portion55P.

The fourth portion54Q is interposed between the first portion51Q and the second portion52Q and, in the illustrated example, connected to the edge of the second portion52Q on the side of the sixth face36in the y-direction, and the third portion53Q. The shape of the fourth portion54Q is not specifically limited. In the illustrated example, the fourth portion54Q extends along the y-direction. The fourth portion54Q is spaced apart from the first portion51Q, as viewed in the x-direction. The fourth portion54Q is shorter and wider than the fourth portion54P.

The wiring50R includes a second portion52R, a third portion53R, a fourth portion54R, and a fifth portion55R, each of which will be described hereunder.

The second portion52R is located on the side of the fifth face35with respect to the first portion51R, in the y-direction. The second portion52R is located on the side of the fourth face34in the x-direction with respect to the second portion52Q, and spaced therefrom. The second portion52R is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52R overlaps with the second portion52Q, as viewed in the x-direction. The shape of the second portion52R is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52R has a rectangular shape.

The third portion53R is connected to the end portion of the third base portion58on the side of the fourth face34in the x-direction. The third portion53R is located between the edge581and the edge582, as viewed in the x-direction, and connected to the edge581and the edge582. The shape of the third portion53R is not specifically limited. In the illustrated example, the third portion53R has a strip shape extending along the x-direction. The third portion53R is wider than the third portion53P.

The fourth portion54R is interposed between the second portion52R and the third portion53R and, in the illustrated example, connected to the edge of the second portion52R on the side of the sixth face36in the y-direction. The shape of the fourth portion54R is not specifically limited. In the illustrated example, the fourth portion54R extends along the y-direction. The fourth portion54R is spaced apart from the first portion51R, as viewed in the x-direction. The fourth portion54R is shorter than the fourth portion54Q. The fourth portion54R has generally the same width as the fourth portion54Q. Here, the expression “generally the same width” refers to, for example, being exactly the same, or different by within ±5% from each other's width.

The fifth portion55R is interposed between the third portion53R and the fourth portion54R and, in the illustrated example, connected to the third portion53R and the fourth portion54R. The shape of the fifth portion55R is not specifically limited. In the illustrated example, the fifth portion55R has a strip shape inclined with respect to the x-direction and the y-direction. The fifth portion55R is generally parallel to the third portion53Q. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%. The fifth portion55R has generally the same width as the third portion53Q. Here, the expression “generally the same width” refers to, for example, being exactly the same, or different by within ±5% from each other's width.

The wiring50S includes a first portion51S, a second portion52S, a third portion53S, a fourth portion54S, and a fifth portion55S, each of which will be described hereunder.

The first portion51S is located on the side of the fourth face34in the x-direction, with respect to the third base portion58, and spaced therefrom. The first portion51S is located on the side of the sixth face36in the y-direction, with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51S overlaps with the third base portion58, as viewed in the y-direction. The first portion51S overlaps with the second base portion56, as viewed in the x-direction. The shape of the first portion51S is not specifically limited. In the illustrated example, the first portion51S has a rectangular shape.

The second portion52S is located on the side of the fifth face35with respect to the first portion51S, in the y-direction. The second portion52S is located on the side of the fourth face34in the x-direction with respect to the second portion52R, and spaced therefrom. The second portion52S is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52S overlaps with the second portion52R, as viewed in the x-direction. The shape of the second portion52S is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52S has a rectangular shape.

The third portion53S is interposed between the first portion51S and the second portion52S and, in the illustrated example, connected to the edge of the first portion51S on the side of the fourth face34in the x-direction. The shape of the third portion53S is not specifically limited. In the illustrated example, the third portion53S has a strip shape extending along the x-direction. The third portion53S overlaps with the third portion53R, the fourth portion54R, and the fifth portion55R, as viewed in the y-direction.

The fourth portion54S is interposed between the first portion51S and the second portion52S and, in the illustrated example, connected to the edge of the second portion52S on the side of the sixth face36in the y-direction. The shape of the fourth portion54S is not specifically limited. In the illustrated example, the fourth portion54S has a strip shape extending along the y-direction. The fourth portion54S overlaps with the third base portion58, the third portion53R, the fourth portion54R, and the fifth portion55R, as viewed in the x-direction.

The fifth portion55S is interposed between the third portion53S and the fourth portion54S and, in the illustrated example, connected to the third portion53S and the fourth portion54S. The shape of the fifth portion55S is not specifically limited. In the illustrated example, the fifth portion55S has a strip shape inclined with respect to the x-direction and the y-direction. The fifth portion55S is generally parallel to the fifth portion55R. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%. The fifth portion55S is shorter than the fifth portion55R.

The wiring50T includes a first portion51T, a second portion52T, a third portion53T, a fourth portion54T, and a fifth portion55T, each of which will be described hereunder.

The first portion51T is located on the side of the fourth face34in the x-direction, with respect to the third base portion58, and spaced therefrom. The first portion51T is located on the side of the sixth face36in the y-direction, with respect to the first portion51S, and spaced therefrom. In the illustrated example, the first portion51T overlaps with the first portion51S, as viewed in the y-direction. The first portion51T overlaps with the second base portion56, as viewed in the x-direction. The shape of the first portion51T is not specifically limited. In the illustrated example, the first portion51T has a rectangular shape.

The second portion52T is located on the side of the fifth face35with respect to the first portion51T, in the y-direction. The second portion52T is located on the side of the sixth face36in the y-direction with respect to the second portion52S, and spaced therefrom. The second portion52T is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52T overlaps with the second portion52S, and includes a portion extending toward the fourth face34, as viewed in the y-direction. The second portion52T is spaced apart from the second portion52R toward the sixth face36, as viewed in the x-direction. The shape of the second portion52T is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52T has a rectangular shape.

The third portion53T is interposed between the first portion51T and the second portion52T and, in the illustrated example, connected to the edge of the first portion51T on the side of the fourth face34in the x-direction. The shape of the third portion53T is not specifically limited. In the illustrated example, the third portion53T has a strip shape extending along the x-direction. The third portion53T overlaps with the third portion53S, as viewed in the y-direction. In the illustrated example, the third portion53T is longer and wider than the third portion53S.

The fourth portion54T is interposed between the first portion51T and the second portion52T and, in the illustrated example, connected to the edge of the second portion52T on the side of the sixth face36in the y-direction. The shape of the fourth portion54T is not specifically limited. In the illustrated example, the fourth portion54T has a strip shape extending along the y-direction. The fourth portion54T overlaps with the third base portion58and the fourth portion54S, as viewed in the x-direction. The fourth portion54T is wider than the fourth portion54S.

The fifth portion55T is interposed between the third portion53T and the fourth portion54T and, in the illustrated example, connected to the third portion53T and the fourth portion54T. The shape of the fifth portion55T is not specifically limited. In the illustrated example, the fifth portion55T has a strip shape inclined with respect to the x-direction and the y-direction. The fifth portion55T is generally parallel to the fifth portion55S. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%. The fifth portion55T is longer and wider than the fifth portion55S.

The wiring50U includes a second portion52U, a third portion53U, a fourth portion54U, and a fifth portion55U, each of which will be described hereunder.

The second portion52U is located on the side of the fifth face35with respect to the second base portion56, in the y-direction. The second portion52U is located on the side of the sixth face36in the y-direction with respect to the second portion52T, and spaced therefrom. The second portion52U is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52U overlaps with the second portion52T, and includes a portion extending from the second portion52T toward the fourth face34, as viewed in the y-direction. The second portion52U is spaced apart from the second portion52R toward the sixth face36, as viewed in the x-direction. The shape of the second portion52U is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52U has a rectangular shape.

The third portion53U is located on the side of the sixth face36in the y-direction, with respect to the first portion51T and the third portion53T. The third portion53U is connected to the edge of the second base portion56on the side of the fourth face34in the x-direction. The shape of the third portion53U is not specifically limited. In the illustrated example, the third portion53U has a strip shape extending along the x-direction. The third portion53U overlaps with the third portion53S, the third portion53T, and the first portion51T, as viewed in the y-direction. In the illustrated example, the third portion53U is longer than the third portion53T. Further, the third portion53U has generally the same width as the third portion53T. Here, the expression “generally the same width” refers to, for example, being exactly the same, or different by within ±5% from each other's width.

The fourth portion54U is interposed between the first portion51U and the second portion52U and, in the illustrated example, connected to the edge of the second portion52U on the side of the sixth face36in the y-direction. The shape of the fourth portion54U is not specifically limited. In the illustrated example, the fourth portion54U has a strip shape extending along the y-direction. The fourth portion54U overlaps with the third base portion58, the fourth portion54S, and the fourth portion54T, as viewed in the x-direction. The fourth portion54U has generally the same width as the fourth portion54T. Here, the expression “generally the same width” refers to, for example, being exactly the same, or different by within ±5% from each other's width.

The fifth portion55U is interposed between the third portion53U and the fourth portion54U and, in the illustrated example, connected to the third portion53U and the fourth portion54U. The shape of the fifth portion55U is not specifically limited. In the illustrated example, the fifth portion55U has a strip shape inclined with respect to the x-direction and the y-direction. The fifth portion55U is generally parallel to the fifth portion55T. Here, the expression “generally parallel” refers to, for example, being exactly parallel to each other, or a situation where the angles with respect to the x-direction or y-direction are different by within ±5%. The fifth portion55U has generally the same width as the fifth portion55T. Here, the expression “generally the same width” refers to, for example, being exactly the same, or different by within ±5% from each other's width.

The wiring50aincludes a first portion51a, a second portion52a, and a third portion53a, each of which will be described hereunder.

The first portion51ais located on the side of the third face33in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51ais located on the side of the sixth face36in the y-direction with respect to the first portion51A, and spaced therefrom. In the illustrated example, the first portion51aoverlaps with the first portion51A and the first portion513, as viewed in the y-direction. The first portion51aoverlaps with the first base portion55, as viewed in the x-direction. The shape of the first portion51ais not specifically limited. In the illustrated example, the first portion51ahas a rectangular shape.

The second portion52ais located on the side of the third face33in the x-direction with respect to the first portion51a, and spaced therefrom. The second portion52aoverlaps with the first portion51aand the first base portion55, as viewed in the x-direction. The second portion52aoverlaps with the fifth portion55A, as viewed in the y-direction. The shape of the second portion52ais not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52ahas a rectangular shape.

The third portion53ais interposed between the first portion51aand the second portion52aand, in the illustrated example, connected to the first portion51aand the second portion52a. The shape of the third portion53ais not specifically limited. In the illustrated example, the third portion53ahas a strip shape extending along the x-direction. The third portion53aoverlaps with the first portion51a, the second portion52a, and the first base portion55, as viewed in the x-direction. The third portion53aoverlaps with the first portion51A and the fifth portion55A, as viewed in the y-direction.

The wiring50bincludes a first portion51b, a second portion52b, and a third portion53b, each of which will be described hereunder.

The first portion51bis located on the side of the third face33in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51bis located between the first portion51aand the first portion51A, in the y-direction. In the illustrated example, the first portion51boverlaps with the first portion51aand the first portion51A, as viewed in the y-direction. The first portion51boverlaps with the first base portion55, as viewed in the x-direction. The shape of the first portion51bis not specifically limited. In the illustrated example, the first portion51bhas a rectangular shape.

The second portion52bis located on the side of the third face33in the x-direction with respect to the first portion51b, and spaced therefrom. In addition, the second portion52bis located on the side of the third face33in the x-direction with respect to the second portion52b, and spaced therefrom. The second portion52boverlaps with the first portion51b, the first portion51a, and the second portion52a, as viewed in the x-direction. An end portion of the second portion52bincludes a portion extending from the second portion52atoward the fifth face35, as viewed in the x-direction. The second portion52boverlaps with the fifth portion55A, as viewed in the y-direction. The shape of the second portion52bis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52bhas a rectangular shape.

The third portion53bis interposed between the first portion51band the second portion52band, in the illustrated example, connected to the first portion51band the second portion52b. The shape of the third portion53bis not specifically limited. In the illustrated example, the third portion53bhas a strip shape extending along the x-direction. The third portion53boverlaps with the first portion51b, the second portion52b, and the first base portion55, as viewed in the x-direction. The third portion53boverlaps with the first portion51A and the fifth portion55A, as viewed in the y-direction. In the illustrated example, the third portion53bis longer than the third portion53a, and has generally the same width as the third portion53a. Here, the expression “generally the same width” refers to, for example, being exactly the same, or different by within ±5% from each other's width.

The wiring50cincludes a first portion51c, a second portion52c, and a third portion53c, each of which will be described hereunder.

The first portion51cis located on the side of the fourth face34in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51cis located between the connecting portion57and the first portion51H, in the y-direction. In the illustrated example, the first portion51coverlaps with the first portion571and the second portion572of the connecting portion57, as viewed in the y-direction. The first portion51coverlaps with the first base portion55, as viewed in the x-direction. The shape of the first portion51cis not specifically limited. In the illustrated example, the first portion51chas a polygonal shape including three sides inclined with respect to the x-direction and the y-direction.

The second portion52cis located on the side of the fourth face34in the x-direction with respect to the first portion51c, with a spacing therefrom, and on the side of the third face33in the x-direction with respect to the second base portion56, with a spacing therefrom. The second portion52coverlaps with the second base portion56, as viewed in the x-direction. The second portion52coverlaps with the first portion571and the third portion573of the connecting portion57, as viewed in the y-direction. The shape of the second portion52cis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52chas a polygonal shape including three sides inclined with respect to the x-direction and the y-direction.

The third portion53cis interposed between the first portion51cand the second portion52cand, in the illustrated example, connected to the first portion51cand the second portion52c. The shape of the third portion53cis not specifically limited. In the illustrated example, the third portion53chas a strip shape extending along the x-direction. The third portion53coverlaps with the first portion51c, the second portion52c, the first base portion55, and the second base portion56, as viewed in the x-direction. The third portion53coverlaps with the first portion571of the connecting portion57, as viewed in the y-direction. In the illustrated example, the third portion53chas generally the same width as the first portion571. Here, the expression “generally the same width” refers to, for example, being exactly the same, or different by within ±5% from each other's width.

The wiring50dincludes a first portion51d, a second portion52d, and a third portion53d, each of which will be described hereunder.

The first portion51dis located on the side of the fourth face34in the x-direction with respect to the first base portion55, with a spacing therefrom, and on the side of the fourth face34with respect to the first portion51c, with a spacing therefrom. The first portion51dis located between the connecting portion57and the first portion51H in the y-direction, at a position shifted toward the fifth face35from the first portion51c. In the illustrated example, the first portion51doverlaps with the first portion571of the connecting portion57, as viewed in the y-direction. The first portion51doverlaps with the first base portion55and the first portion51c, as viewed in the x-direction. The shape of the first portion51dis not specifically limited. In the illustrated example, the first portion51dhas a polygonal shape including three sides inclined with respect to the x-direction and the y-direction.

The second portion52dis located on the side of the fourth face34in the x-direction with respect to the first portion Sid, with a spacing therefrom, and on the side of the third face33in the x-direction with respect to the second base portion56, with a spacing therefrom. The second portion52dis located at a position shifted toward the third face33in the x-direction, from the second portion52c. The second portion52doverlaps with the second base portion56, as viewed in the x-direction. The second portion52doverlaps with the first portion571of the connecting portion57, as viewed in the y-direction. The shape of the second portion52dis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52dhas a polygonal shape including three sides inclined with respect to the x-direction and the y-direction.

The third portion53dis interposed between the first portion51dand the second portion52dand, in the illustrated example, connected to the first portion51dand the second portion52d. The shape of the third portion53dis not specifically limited. In the illustrated example, the third portion53dhas a strip shape extending along the x-direction. The third portion53doverlaps with the first portion51d, the second portion52d, the first base portion55, and the second base portion56, as viewed in the x-direction. The third portion53doverlaps with the first portion571of the connecting portion57, as viewed in the y-direction. In the illustrated example, the third portion53dis shorter than the third portion53c, and has generally the same width as the third portion53c. Here, the expression “generally the same width” refers to, for example, being exactly the same, or different by within ±5% from each other's width.

The wiring50eincludes a first portion51e, a second portion52e, and a third portion53e, each of which will be described hereunder.

The first portion51eis located on the side of the fourth face34in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51eis located between the connecting portion57and the first portion51H in the y-direction, at a position shifted toward the fifth face35from the first portion51d. In the illustrated example, the first portion51eoverlaps with the first portion571and the second portion572of the connecting portion57, as viewed in the y-direction. The first portion51eoverlaps with the first base portion55and the first portion51d, as viewed in the x-direction. The shape of the first portion51eis not specifically limited. In the illustrated example, the first portion51ehas a polygonal shape including two sides inclined with respect to the x-direction and the y-direction.

The second portion52eis located on the side of the fourth face34in the x-direction with respect to the first portion51e, with a spacing therefrom, and on the side of the third face33in the x-direction with respect to the second base portion56, with a spacing therefrom. The second portion52eis located at a position shifted toward the fourth face34in the x-direction, from the second portion52d. The second portion52eoverlaps with the second base portion56, as viewed in the x-direction. The second portion52eoverlaps with the second portion52c, the second portion52d, and the first portion571and the third portion573of the connecting portion57, as viewed in the y-direction. The shape of the second portion52eis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52ehas a polygonal shape including two sides inclined with respect to the x-direction and the y-direction.

The third portion53eis interposed between the first portion51eand the second portion52eand, in the illustrated example, connected to the first portion51eand the second portion52e. The shape of the third portion53eis not specifically limited. In the illustrated example, the third portion53ehas a strip shape extending along the x-direction. The third portion53eoverlaps with the first portion51e, the second portion52e, the first base portion55, and the second base portion56, as viewed in the x-direction. The third portion53eoverlaps with the first portion571of the connecting portion57, as viewed in the y-direction. In the illustrated example, the third portion53eis longer than the third portion53d, and has generally the same length as the third portion53c. Here, the expression “generally the same length” refers to, for example, being exactly the same, or different by within ±5% from each other's length. Further, the third portion53ehas generally the same width as the third portion53d. Here, the expression “generally the same width” refers to, for example, being exactly the same, or different by within ±5% from each other's width.

Referring toFIG. 46, in the illustrated example, the first portion51cincludes a first edge511c, a second edge512c, a third edge513c, and a fourth edge514c. The first edge511cis connected to the third portion53c, and inclined so as to be closer to the fifth face35in the y-direction, toward the third face33in the x-direction. The second edge512cis connected to the first edge511c, and inclined so as to be closer to the sixth face36in the y-direction, toward the third face33in the x-direction. The third edge513cis connected to the second edge512c, and inclined so as to be closer to the fifth face35in the y-direction, toward the third face33in the x-direction. The fourth edge514cis connected to the third edge513cand the third portion53c, and extends along the x-direction.

In the illustrated example, the first portion51dincludes a first edge511d, a second edge512d, a third edge513d, and a fourth edge514d. The third edge513dis connected to the third portion53d, and inclined so as to be closer to the sixth face in the y-direction, toward the third face33in the x-direction. The first edge511dis connected to the third edge513d, and inclined so as to be closer to the fifth face35in the y-direction, toward the third face33in the x-direction. The first edge511dis opposed to the first edge511c. The second edge512dis connected to the first edge511d, and inclined so as to be closer to the sixth face36in the y-direction, toward the third face33in the x-direction. The fourth edge514dis connected to the second edge512dand the third portion53d, and inclined so as to be closer to the fifth face35in the y-direction, toward the third face33in the x-direction.

In the illustrated example, the first portion51eincludes a first edge511e, a second edge512e, a third edge513e, and a fourth edge514e. The first edge511eis connected to the third portion53e, and inclined so as to be closer to the sixth face in the y-direction, toward the third face33in the x-direction. The first edge511eis opposed to the second edge512d. The second edge512eis connected to the first edge511e, and inclined so as to be closer to the fifth face35in the y-direction, toward the third face33in the x-direction. The third edge513eis connected to the second edge512e, and extends along the y-direction. The third edge513eis opposed to the first base portion55. The fourth edge514eis connected to the third edge513eand the third portion53e, and extends along the x-direction.

Referring toFIG. 47, in the illustrated example, the second portion52cincludes a first edge521c, a second edge522c, a third edge523c, and a fourth edge524c. The first edge521cis connected to the third portion53c, and inclined so as to be closer to the fifth face35in the y-direction, toward the fourth face34in the x-direction. The second edge522cis connected to the first edge521c, and inclined so as to be closer to the sixth face36in the y-direction, toward the fourth face34in the x-direction. The third edge523cis connected to the second edge522c, and inclined so as to be closer to the fifth face35in the y-direction, toward the fourth face34in the x-direction. The fourth edge524cis connected to the third edge523cand the third portion53c, and extends along the x-direction.

In the illustrated example, the second portion52dincludes a first edge521d, a second edge522d, a third edge523d, and a fourth edge524d. The third edge523dis connected to the third portion53d, and inclined so as to be closer to the sixth face36in the y-direction, toward the fourth face34in the x-direction. The first edge521dis connected to the third edge523d, and inclined so as to be closer to the fifth face35in the y-direction, toward the fourth face34in the x-direction. The first edge521dis opposed to the first edge521c. The second edge522dis connected to the first edge521d, and inclined so as to be closer to the sixth face36in the y-direction, toward the fourth face34in the x-direction. The fourth edge524dis connected to the second edge522dand the third portion53d, and inclined so as to be closer to the fifth face35in the y-direction, toward the fourth face34in the x-direction.

In the illustrated example, the second portion52eincludes a first edge521e, a second edge522e, a third edge523e, and a fourth edge524e. The first edge521eis connected to the third portion53e, and inclined so as to be closer to the sixth face36in the y-direction, toward the fourth face34in the x-direction. The first edge521eis opposed to the second edge522d. The second edge522eis connected to the first edge521e, and inclined so as to be closer to the fifth face35in the y-direction, toward the fourth face34in the x-direction. The third edge523eis connected to the second edge522e, and extends along the y-direction. The third edge523eis opposed to the second base portion56. The fourth edge524eis connected to the third edge523eand the third portion53e, and extends along the x-direction.

As shown inFIG. 45, the wiring50fincludes a first portion51f, a second portion52f, and a third portion53f, each of which will be described hereunder.

The first portion51fis located on the side of the fourth face34in the x-direction with respect to the second base portion56, and spaced therefrom. The first portion51fis located on the side of the sixth face36in the y-direction with respect to the third portion53U, and spaced therefrom. In the illustrated example, the first portion51foverlaps with the second base portion56, as viewed in the x-direction. The first portion51foverlaps with the third portion53U, the first portion51T, and the first portion51S, as viewed in the y-direction. The shape of the first portion51fis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51fhas a rectangular shape.

The second portion52fis located on the side of the fourth face34in the x-direction with respect to the first portion51f. The second portion52fis located on the side of the sixth face36in the y-direction with respect to the third portion53U, and spaced therefrom. In the illustrated example, the second portion52foverlaps with the first portion51fand the second base portion56, as viewed in the x-direction. The second portion52falso overlaps with the fifth portion55U, as viewed in the y-direction. The shape of the second portion52fis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52fhas a rectangular shape.

The third portion53fis interposed between the first portion51fand the second portion52fand, in the illustrated example, connected to the first portion51fand the second portion52f. The shape of the third portion53fis not specifically limited. In the illustrated example, the third portion53fhas a strip shape extending along the x-direction. The third portion53foverlaps with the first portion51f, the second portion52f, and the second base portion56, as viewed in the x-direction. The third portion53foverlaps with the third portion53U and the third portion53T, as viewed in the y-direction. In the illustrated example, the third portion53fis longer than the third portion53Td, and narrower than the third portion53T and the third portion53U.

As shown inFIG. 44andFIG. 45, the second portion52C to the second portion52H are aligned in the x-direction, with clearances G51between each other. A difference in size among the clearances G51is within ±5%. The second portion52H and the second portion52I are aligned in the x-direction, with a clearance G52therebetween. The clearance G52is wider than the clearance G51. The second portion52I to the second portion52R are aligned in the x-direction, with clearances G53between each other. The clearances G53are narrower than the clearance G51and the clearance G52, and a difference among the clearances G53is within ±5%. The second portion52R and the second portion52S are aligned in the x-direction, with a clearance G54therebetween. The clearance G54is wider than the clearance G53and the clearance G51, and narrower than the clearance G52.

Regarding the bonding section6according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the bonding section6according to the first embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment.

The plurality of bonding sections6are formed on the substrate3. In this embodiment, the plurality of bonding sections6are formed on the first face31of the substrate3. The bonding section6is formed of, for example, a conductive material. The conductive material to form the bonding section6is not specifically limited. Examples of the conductive material to form the bonding section6include materials containing silver (Ag), copper (Cu), or gold (Au). In the subsequent description, it will be assumed that the bonding section6contains silver. The bonding section6according to this embodiment contains the same conductive material as that employed to form the conductive section5. However, the bonding section6may contain copper instead of silver, or gold instead of silver or copper. Alternatively, the bonding section6may contain Ag—Pt or Ag—Pd. The forming method of the bonding section6is not limited. For example, the bonding section6may be formed, like the conductive section5, by sintering a paste containing the mentioned metal. The thickness of the bonding section6is not specifically limited, but may be, for example, approximately 5 μm to 30 μm.

In this embodiment, as shown inFIG. 39toFIG. 43andFIG. 48, the plurality of bonding sections6include a bonding section6A to a bonding section6D.

As shown inFIG. 39,FIG. 41,FIG. 42, andFIG. 48, the bonding section6A is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6A overlaps with the entirety of the first base portion55, as viewed in the y-direction. The shape of the bonding section6A is not specifically limited. In the illustrated example, the bonding section6A includes a first edge61A, a second edge62A, a third edge63A, a fourth edge64A, a fifth edge65A, a sixth edge66A, a seventh edge67Aa, an eighth edge68Ab, and a ninth edge67Ab.

The first edge61A extends along the y-direction. In the illustrated example, the first edge61A overlaps with the second portion52A, as viewed in the y-direction.

The second edge62A is located on the opposite side of the first edge61A in the x-direction, across the center of the bonding section6A in the x-direction, and extends along the y-direction. In the illustrated example, the second edge62A overlaps with the first portion571of the connecting portion57, the third portion53c, the third portion53d, the third portion53e, and the first portion51H, as viewed in the y-direction. The second edge62A is smaller in size in the y-direction, than the first edge61A.

The third edge63A is located between the first edge61A and the second edge62A, as viewed in the y-direction. The third edge63A extends along the x-direction. The third edge63A is spaced apart from the first base portion55, in the y-direction. In the illustrated example, the third edge63A overlaps with the first portion51A to the first portion51H, and the wirings50ato50e, as viewed in the y-direction.

The fourth edge64A is located on the opposite side of the third edge63A in the y-direction, across the center of the bonding section6A in the y-direction. The fourth edge64A extends along the x-direction. The fourth edge64A is smaller in size in the x-direction, than the third edge63A. The entirety of the fourth edge64A overlaps with the third edge63A, as viewed in the y-direction.

The fifth edge65A is located between the second edge62A and the fourth edge64A, in the y-direction. The fifth edge65A, extending along the x-direction, overlaps with the first edge61A, as viewed in the x-direction.

The sixth edge66A is connected to the end of the fifth edge65A on the side of the third face33in the x-direction, and the end of the fourth edge64A on the side of the fourth face34in the x-direction. In the illustrated example, the sixth edge66A is inclined with respect to the x-direction and the y-direction.

The seventh edge67Aa is located between the first edge61A and the third edge63A in the x-direction, and between the first edge61A and the third edge63A in the y-direction. The seventh edge67Aa is connected to the first edge61A and the third edge63A. In the illustrated example, the seventh edge67Aa forms a convex curved surface, as viewed in the z-direction. The ninth edge67Ab is located between the second edge62A and the third edge63A in the x-direction, and between the second edge62A and the third edge63A in the y-direction. The ninth edge67Ab is connected to the second edge62A and the third edge63A. In the illustrated example, the ninth edge67Ab forms a convex curved surface, as viewed in the z-direction.

The eighth edge68Ab is located between the second edge62A and the fifth edge65A in the y-direction. In the illustrated example, the eighth edge68A is connected to the end of the second edge62A on the side of the sixth face36in the y-direction, and the end of the fifth edge65A on the side of the fourth face34in the x-direction. In the illustrated example, the eighth edge68A is inclined with respect to the x-direction and the y-direction.

As shown inFIG. 39,FIG. 41, andFIG. 43, the bonding section6B is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6B is located on the side of the fourth face34with respect to the bonding section6A, in the x-direction. In the illustrated example, the bonding section6B overlaps with the connecting portion57, the wirings50cto50e, and the second base portion56, as viewed in the y-direction. The shape of the bonding section6B is not specifically limited. In the illustrated example, the bonding section6B includes a first edge61B, a second edge62B, a third edge63B, a fourth edge64B, a fifth edge65B, a sixth edge66B, a seventh edge67Ba, a ninth edge69Ba, a tenth edge67Bb, and an eleventh edge69Bb.

The first edge61B extends along the y-direction. The first edge61B is opposed to the second edge62A. In the illustrated example, the first edge61B overlaps with the first portion571of the connecting portion57, the third portion53c, the third portion53d, the third portion53e, and the first portion51H, as viewed in the y-direction.

The second edge62B is located on the opposite side of the first edge61B in the x-direction, across the center of the bonding section6B in the x-direction, and extends along the y-direction. In the illustrated example, the second edge62B overlaps with the second base portion56, as viewed in the y-direction. The second edge62B is smaller in size in the y-direction, than the first edge61B. In addition, the second edge62B is generally the same in size in the y-direction, as the second edge62A (exactly the same, or different by within ±5%).

The third edge63B is located between the first edge61B and the second edge62B, as viewed in the y-direction. The third edge63B extends along the x-direction. The third edge63B is spaced apart from the second base portion56, in the y-direction. In the illustrated example, the third edge63B overlaps with the second base portion56, the connecting portion57, and the wirings50ato50e, as viewed in the y-direction. In the illustrated example, in addition, the third edge63B is located generally at the same position as the third edge63A, in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located exactly at the same position, or being deviated by within ±5% of the characteristic size (size of the bonding section6A or bonding section6B in the y-direction).

The fourth edge64B is located on the opposite side of the third edge63B in the y-direction, across the center of the bonding section6B in the y-direction. The fourth edge64B extends along the x-direction. The fourth edge64B is connected to the end of the first edge61B on the side of the sixth face36in the y-direction. The fourth edge64B is smaller in size in the x-direction, than the third edge63B. The entirety of the fourth edge64B overlaps with the third edge63B, as viewed in the y-direction.

The fifth edge65B is located between the second edge62B and the fourth edge64B, in the x-direction and the y-direction. In the illustrated example, the fifth edge65B extends along the x-direction. The fifth edge65B is smaller in size in the x-direction, than the third edge63B.

The sixth edge66B is connected to the fourth edge64B and the fifth edge65B. In the illustrated example, the sixth edge66B is inclined with respect to the x-direction and the y-direction.

The seventh edge67Ba is located between the first edge61B and the third edge63B in the x-direction, and between the first edge61B and the third edge63B in the y-direction. The seventh edge67Ba is connected to the first edge61B and the third edge63B. In the illustrated example, the seventh edge67Ba forms a convex curved surface, as viewed in the z-direction. The tenth edge67Bb is located between the second edge62B and the third edge63B in the x-direction, and between the second edge62B and the third edge63B in the y-direction. The tenth edge67Bb is connected to the second edge62B and the third edge63B. In the illustrated example, the tenth edge67Bb forms a convex curved surface, as viewed in the z-direction.

The ninth edge69Ba is located between the first edge61B and the fourth edge64B, in the y-direction. In the illustrated example, the ninth edge69Ba is connected to the end of the first edge61B on the side of the sixth face36in the y-direction, and the end of the fourth edge64B on the side of the third face33in the x-direction. In the illustrated example, the ninth edge69Ba is inclined with respect to the x-direction and the y-direction.

The eleventh edge69Bb is located between the second edge62B and the fifth edge65B, in the y-direction. In the illustrated example, the eleventh edge69Bb is connected to the end of the second edge62B on the side of the sixth face36in the y-direction, and the end of the fifth edge65B on the side of the fourth face34in the x-direction. In the illustrated example, the eleventh edge69Bb is inclined with respect to the x-direction and the y-direction.

As shown inFIG. 39,FIG. 41, andFIG. 43, the bonding section6C is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6C is located on the side of the fourth face34with respect to the bonding section6B, in the x-direction. In the illustrated example, the bonding section6C overlaps with the wirings50S to50U, the wiring50f, and the second base portion56, as viewed in the y-direction. The shape of the bonding section6C is not specifically limited. In the illustrated example, the bonding section6C includes a first edge61C, a second edge62C, a third edge63C, a fourth edge64C, a fifth edge65C, a sixth edge66C, a seventh edge67Ca, a ninth edge69Ca, a tenth edge67Cb, and an eleventh edge69Cb.

The first edge61C extends along the y-direction. The first edge61C is opposed to the second edge62B. In the illustrated example, the first edge61C overlaps with the second base portion56, as viewed in the y-direction.

The second edge62C is located on the opposite side of the first edge61C in the x-direction, across the center of the bonding section6C in the x-direction, and extends along the y-direction. In the illustrated example, the second edge62C overlaps with the wirings50S to50U and the wiring50f, as viewed in the y-direction. The second edge62C is smaller in size in the y-direction, than the first edge61C. In addition, the second edge62C is generally the same in size in the y-direction, as the second edge62B (exactly the same, or different by within ±5%).

The third edge63C is located between the first edge61C and the second edge62C, as viewed in the y-direction. The third edge63C extends along the x-direction. The third edge63C is spaced apart from the second base portion56, in the y-direction. In the illustrated example, the third edge63C overlaps with the wirings50S to50U, the wiring50f, and the second base portion56, as viewed in the y-direction. In the illustrated example, in addition, the third edge63C is located generally at the same position as the third edge63B, in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located exactly at the same position, or being deviated by within ±5% of the characteristic size (size of the bonding section6B or bonding section6C in the y-direction).

The fourth edge64C is located on the opposite side of the third edge63C in the y-direction, across the center of the bonding section6C in the y-direction. The fourth edge64C extends along the x-direction. The fourth edge64C is connected to the end of the first edge61C on the side of the sixth face36in the y-direction. The fourth edge64C is smaller in size in the x-direction, than the third edge63C. The entirety of the fourth edge64C overlaps with the third edge63C, as viewed in the y-direction.

The fifth edge65C is located between the second edge62C and the fourth edge64C, in the x-direction and the y-direction. In the illustrated example, the fifth edge65C extends along the x-direction. The fifth edge65C is smaller in size in the x-direction, than the third edge63C.

The sixth edge66C is connected to the fourth edge64C and the fifth edge65C. In the illustrated example, the sixth edge66C is inclined with respect to the x-direction and the y-direction.

The seventh edge67Ca is located between the first edge61C and the third edge63C in the x-direction, and between the first edge61C and the third edge63C in the y-direction. The seventh edge67Ca is connected to the first edge61C and the third edge63C. In the illustrated example, the seventh edge67Ca forms a convex curved surface, as viewed in the z-direction. The tenth edge67Cb is located between the second edge62C and the third edge63C in the x-direction, and between the second edge62C and the third edge63C in the y-direction. The tenth edge67Cb is connected to the second edge62C and the third edge63C. In the illustrated example, the tenth edge67Cb forms a convex curved surface, as viewed in the z-direction.

The ninth edge69Ca is located between the first edge61C and the fourth edge64C, in the y-direction. In the illustrated example, the ninth edge69Ca is connected to the end of the first edge61C on the side of the sixth face36in the y-direction, and the end of the fourth edge64C on the side of the third face33in the x-direction. In the illustrated example, the ninth edge69Ca is inclined with respect to the x-direction and the y-direction.

The eleventh edge69Cb is located between the second edge62C and the fifth edge65C, in the y-direction. In the illustrated example, the eleventh edge69Cb is connected to the end of the second edge62C on the side of the sixth face36in the y-direction, and the end of the fifth edge65C on the side of the fourth face34in the x-direction. In the illustrated example, the ninth edge69Cb is inclined with respect to the x-direction and the y-direction.

As shown inFIG. 39,FIG. 41, andFIG. 43, the bonding section6D is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6D is located on the side of the fourth face34with respect to the bonding section6C, in the x-direction. In the illustrated example, the bonding section6D overlaps with the wirings50S to50U and the wiring50f, as viewed in the y-direction, and is spaced apart from the second base portion56. The shape of the bonding section6D is not specifically limited. In the illustrated example, the bonding section6D includes a first edge61D, a second edge62D, a third edge63D, a fourth edge64D, a seventh edge67Da, a ninth edge69Da, a tenth edge67Db, and an eleventh edge69Db.

The first edge61D extends along the y-direction. The first edge61D is opposed to the second edge62C. In the illustrated example, the first edge61D overlaps with the wirings50S to50U and the wiring50f, as viewed in the y-direction.

The second edge62D is located on the opposite side of the first edge61D in the x-direction, across the center of the bonding section6D in the x-direction, and extends along the y-direction. In the illustrated example, the second edge62D overlaps with the wirings50S to50U, as viewed in the y-direction. The second edge62D is generally the same in size in the y-direction, as the first edge61D (exactly the same, or different by within ±5%). Further, the second edge62D is larger in size in the y-direction, than the second edge62C.

The third edge63D is located between the first edge61D and the second edge62D, as viewed in the y-direction. The third edge63D extends along the x-direction. The third edge63D is spaced apart from the second base portion56, in the y-direction. In the illustrated example, the third edge63D overlaps with the wirings50S to50U, the wiring50f, and the second base portion56, as viewed in the y-direction. In the illustrated example, in addition, the third edge63D is located generally at the same position as the third edge63C, in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located exactly at the same position, or being deviated by within ±5% of the characteristic size (size of the bonding section6C or bonding section6D in the y-direction).

The fourth edge64D is located on the opposite side of the third edge63D in the y-direction, across the center of the bonding section6D in the y-direction. The fourth edge64D extends along the x-direction. The fourth edge64D is connected to the end of the first edge61D on the side of the sixth face36in the y-direction. The fourth edge64D is generally the same in size in the x-direction, as the third edge63D (exactly the same, or different by within ±5%).

The seventh edge67Da is located between the first edge61D and the third edge63D in the x-direction, and between the first edge61D and the third edge63D in the y-direction. The seventh edge67Da is connected to the first edge61D and the third edge63D. In the illustrated example, the seventh edge67Da forms a convex curved surface, as viewed in the z-direction. The tenth edge67Db is located between the second edge62D and the third edge63D in the x-direction, and between the second edge62D and the third edge63D in the y-direction. The tenth edge67Db is connected to the second edge62D and the third edge63D. In the illustrated example, the tenth edge67Db forms a convex curved surface, as viewed in the z-direction.

The ninth edge69Da is located between the first edge61D and the fourth edge64D, in the y-direction. In the illustrated example, the ninth edge69Da is connected to the end of the first edge61D on the side of the sixth face36in the y-direction, and the end of the fourth edge64D on the side of the third face33in the x-direction. In the illustrated example, the ninth edge69Da is inclined with respect to the x-direction and the y-direction.

The eleventh edge69Db is located between the second edge62D and the fourth edge64D, in the y-direction. In the illustrated example, the eleventh edge69Db is connected to the end of the second edge62D on the side of the sixth face36in the y-direction, and the end of the fourth edge64D on the side of the fourth face34in the x-direction. In the illustrated example, the eleventh edge69Db is inclined with respect to the x-direction and the y-direction.

Regarding the lead1according to this embodiment, although any of the elements is apparently given the same numeral, for the sake of convenience of description, as that of the lead1according to the first embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment. The plurality of leads1contain a metal, and have higher heat dissipation characteristics, for example than the substrate3. The metal to form the lead1is not specifically limited, and may be, for example, copper (Cu), aluminum, iron (Fe), oxygen-free copper, or an alloy of the cited metals, such as a Cu—Sn alloy, a Cu—Zr alloy, or a Cu—Fe alloy. The plurality of leads1may be plated with nickel (Ni). Examples of the forming method of the plurality of leads1include pressing a metal plate with a die, and patterning a metal plate by etching, without limitation thereto. The thickness of the lead1is not specifically limited, but may be, for example, approximately 0.4 mm to 0.8 mm.

The plurality of leads1include a plurality of leads1A to1G, as shown inFIG. 35toFIG. 43. The plurality of leads1A to1G constitute conduction paths, for example to the semiconductor chips4A to4F.

The lead1A is located on the substrate3and, in this embodiment, on the first face31. The lead1A exemplifies a first lead in the present disclosure. The lead1A is bonded to the bonding section6A, via a bonding material81. It is preferable to employ a material having high thermal conductivity as the bonding material81, such as silver paste, copper paste, or solder. However, the bonding material81may be an insulative material such as an epoxy-based resin or a silicone-based resin. In the case where the bonding section6A is not provided on the substrate3, the lead1A may be bonded to the substrate3.

The configuration of the lead1A is not specifically limited and, in this embodiment, the lead1A includes a first portion11A, a second portion12A, a third portion13A, and a fourth portion14A, each of which will be described hereunder.

As shown inFIG. 39,FIG. 40,FIG. 41, andFIG. 42, the first portion11A includes a main surface111A, a back surface112A, a first face121A, a second face122A, a third face123A, a fourth face124A, a fifth face125A, a sixth face126A, a seventh face127Aa, an eighth face128A, a ninth face127Ab, a plurality of recesses1111A, and a groove1112A. The first portion11A overlaps with the sixth face36of the substrate3, as viewed in the z-direction.

The main surface111A is oriented in the same direction as the first face31, in the z-direction.

The back surface112A is oriented to the opposite side of the main surface111A in the z-direction and, in the illustrated example, a planar surface. The back surface112A is bonded to the bonding section6A via the bonding material81, as shown inFIG. 41andFIG. 42.

The first face121A is located between the main surface111A and the back surface112A in the z-direction, and oriented in the same direction as the third face33as a whole, in the x-direction. In the illustrated example, the first face121A is connected to the main surface111A and the back surface112A.

The second face122A is located on the opposite side of the first face121A in the x-direction, and oriented in the same direction as the fourth face34, in the x-direction. The second face122A is located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A. The second face122A is smaller in size in the y-direction, than the first face121A.

The third face123A is located between the first face121A and the second face122A in the x-direction, and oriented in the same direction as the fifth face35, in the y-direction. The third face123A is located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A.

The fourth face124A is located on the opposite side of the third face123A in the y-direction, and oriented in the same direction as the sixth face36in the y-direction. The fourth face124A is located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A. The fourth face124A is smaller in size in the x-direction, than the third face123A.

The fifth face125A is located between the first face121A and the second face122A in the x-direction, at a position close to the second face122A. The fifth face125A extends along the x-direction. The fifth face125A is located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A.

The sixth face126A is located between the fourth face124A and the fifth face125A, in the x-direction, and the y-direction. In the illustrated example, the sixth face126A is connected to the fourth face124A and the fifth face125A. The sixth face126A is inclined with respect to the x-direction and the y-direction. The sixth face126A is located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A.

The seventh face127Aa is located between the first face121A and the third face123A in the x-direction, and between the first face121A and the third face123A in the y-direction. The seventh face127Aa is connected to the first face121A and the third face123A. In the illustrated example, the seventh face127Aa forms a convex curved surface, as viewed in the z-direction. The seventh face127Aa is located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A. The eleventh face127Ab is located between the second face122A and the third face123A in the x-direction, and between the second face122A and the third face123A in the y-direction. The ninth face127Ab is connected to the second face122A and the third face123A. In the illustrated example, the ninth face127Ab forms a convex curved surface, as viewed in the z-direction. The ninth face127Ab is located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A.

The eighth face128A is located between the second face122A and the fifth face125A, in the x-direction and the y-direction. In the illustrated example, the eighth face128A is connected to the second face122A and the fifth face125A. In the illustrated example, the eighth face128A is inclined with respect to the x-direction and the y-direction. The eighth face128A is located between the main surface111A and the back surface112A in the z-direction and, in the illustrated example, connected to the main surface111A and the back surface112A.

In the illustrated example, the first face121A and the second face122A each include a plurality of protrusions131A. The plurality of protrusions131A each protrude outwardly of the first portion11A as viewed in the z-direction, and extend along the z-direction. Here, the plurality of protrusions131A may be formed on the first portion11A, in portions other than the first face121A and the second face122A. In addition, at least one of the first face121A and the second face122A may be without the plurality of protrusions131A.

The plurality of recesses1111A are each recessed from the main surface111A in the z-direction. The shape of the recess1111A in a z-direction view is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular. In the illustrated example, the plurality of recesses1111A are arranged in a matrix pattern.

The number of rows of the plurality of recesses1111A in the y-direction is larger in the region between the groove1112A and the third face123A, than in the region between the groove1112A and the fourth face124A.

The number of rows of the plurality of recesses1111A in the y-direction is larger in the region between the groove1112A and the third face123A, than in the region between the groove1112A and the fourth face124A.

The groove1112A is recessed from the main surface111A in the z-direction. The shape of the groove1112A in a z-direction view is not specifically limited. In the illustrated example, the groove1112A includes three rectangular sections, and three sections extending along the x-direction in the respective rectangular sections. The cross-sectional shape of the groove1112A is not specifically limited and may be, for example, circular, elliptical, rectangular, or triangular.

The third portion13A and the fourth portion14A are covered with the encapsulating resin7. The third portion13A is connected to the first portion11A and the fourth portion14A. In the illustrated example, the third portion13A is connected to a portion of the first portion11A adjacent to the fourth face124A. In addition, the third portion13A is spaced apart from the sixth face36, as viewed in the z-direction. Like a third portion133and a fourth portion143shown inFIG. 40, the fourth portion14A is shifted from the first portion11A in the z-direction, to the side to which the main surface111A is oriented. The end portion of the fourth portion14A is flush with a sixth face76of the resin7.

The second portion12A is connected to the end portion of the fourth portion14A, and corresponds to a portion of the lead1A sticking out from the encapsulating resin7. The second portion12A sticks out to the opposite side of the first portion11A, in the y-direction. The second portion12A is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion12A is bent in the z-direction, to the side to which the main surface111A is oriented. In this embodiment, the lead1A includes a pair of second portions12A, which are spaced apart from each other in the x-direction.

The lead1B is located on the substrate3and, in this embodiment, on the first face31. The lead1B exemplifies a first lead in the present disclosure. The lead13is bonded to the bonding section6B, via the bonding material81. In the case where the bonding section6B is not provided on the substrate3, the lead1B may be bonded to the substrate3.

The configuration of the lead1B is not specifically limited. In this embodiment the lead1B includes, as shown inFIG. 39toFIG. 41, andFIG. 43, a first portion11B, a second portion12B, a third portion13B, and a fourth portion14B, each of which will be described hereunder.

The first portion11B includes a main surface111B, a back surface112B, a first face121B, a second face122B, a third face123B, a fourth face124Ba, a fifth face125B, a sixth face126Ba, a seventh face127Ba, an eighth face128B, a ninth face129B, a tenth face124Bb, an eleventh face126Bb, a twelfth face127Bb, a plurality of recesses1111B, and a groove1112B.

The main surface111B is oriented in the same direction as the first face31, in the z-direction.

The back surface112B is oriented to the opposite side of the main surface111B in the z-direction and, in the illustrated example, a planar surface. The back surface112B is bonded to the bonding section6B via the bonding material81.

The first face121B is located between the main surface111B and the back surface112B in the z-direction, and oriented in the same direction as the third face33as a whole, in the x-direction. In the illustrated example, the first face121B is connected to the main surface111B and the back surface112B. The first face121B is opposed to the second face122A.

The second face122B is located on the opposite side of the first face121B in the x-direction, and oriented in the same direction as the fourth face34, in the x-direction. The second face122B is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B. The second face122B is generally the same in size in the y-direction, as the first face121B (exactly the same, or different by within ±5%).

The third face123B is located between the first face121B and the second face122B in the x-direction, and oriented in the same direction as the fifth face35, in the y-direction. The third face123B is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B.

The fourth face124Ba is located on the side of the sixth face36in the y-direction, with respect to the first face121B and the second face122B, and extends along the x-direction. The fourth face124Ba is oriented in the same direction as the fifth face35in the y-direction, and opposed to the fifth face125A. The fourth face124Ba is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B. In the illustrated example, the fourth face124Ba overlaps with the first portion11A, as viewed in the y-direction. The tenth face124Bb is located on the side of the sixth face36in the y-direction, with respect to the first face121B and the second face122B, and extends along the x-direction. The tenth face124Bb is oriented in the same direction as the sixth face36in the y-direction. The tenth face1248bis located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B. In the illustrated example, the tenth face124Bb overlaps with the first portion11A, as viewed in the y-direction.

The fifth face125B is located between the second face122B and the fourth face124Ba in the x-direction, at a position close to the second face122B. The fifth face125B extends along the x-direction. The fifth face125B overlaps with the third face123B, as viewed in the y-direction. The fifth face125B is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B.

The sixth face126Ba is inclined with respect to the x-direction and the y-direction. In the illustrated example, the sixth face126Ba is connected to the fourth face124Ba and the fifth face125B. The sixth face126Ba is connected to the first face121B and the fourth face124Ba, and opposed to the eighth face128A. The sixth face126Ba is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B. The eleventh face126Bb is inclined with respect to the x-direction and the y-direction. In the illustrated example, the eleventh face126Bb is connected to the fifth face125B and the fourth face124Ba. The eleventh face126Bb is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B.

The seventh face127Ba is located between the second face122B and the third face123B in the x-direction, and between the first face121B and the second face122B in the y-direction. The seventh face127Ba is connected to the first face121B and the third face123B. In the illustrated example, the seventh face127Ba forms a convex curved surface, as viewed in the z-direction. The seventh face127Ba is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B. The twelfth face127Bb is located between the second face122B and the third face123B in the x-direction, and between the second face122B and the third face123B in the y-direction. The twelfth face127Bb is connected to the second face122B and the third face123B. In the illustrated example, the twelfth face127Bb forms a convex curved surface, as viewed in the z-direction. The twelfth face127Bb is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B.

The eighth face128B is located between the second face122B and the fifth face125B, in the x-direction and the y-direction, and connected to the second face122B and the fifth face125B. In the illustrated example, the eighth face128B is inclined with respect to the x-direction and the y-direction. The eighth face128B is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B.

The ninth face129B is connected to the end of the fourth face124Ba on the side of the third face33in the x-direction. The ninth face129B is inclined with respect to the x-direction and the y-direction. The ninth face129B is opposed to the sixth face126A. The ninth face129B is located between the main surface111B and the back surface112B in the z-direction and, in the illustrated example, connected to the main surface111B and the back surface112B.

In the illustrated example, the third face123B includes a plurality of protrusions131B. The plurality of protrusions131B each protrude outwardly of the first portion11B as viewed in the z-direction, and extend along the z-direction. Here, the plurality of protrusions131B may be formed on the first portion11B, in portions other than the third face123B. In addition, the third face123B may be without the plurality of protrusions131B.

The plurality of recesses1111B are each recessed from the main surface111B in the z-direction. The shape of the recess1111B in a z-direction view is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular. In the illustrated example, the plurality of recesses1111B are arranged in a matrix pattern.

The groove1112B is recessed from the main surface111B in the z-direction. In the illustrated example, the shape of the groove1112B in a z-direction view is not specifically limited and, in the illustrated example, the groove1112B includes a rectangular section, and a section extending along the x-direction inside the rectangular section. The cross-sectional shape of the groove1112B is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular.

The number of rows of the plurality of recesses1111B in the y-direction is larger in the region between the groove1112B and the tenth face124Bb, than in the region between the groove1112B and the third face123B.

The third portion13B and the fourth portion14B are covered with the encapsulating resin7. The third portion13B is connected to the first portion11B and the fourth portion14B. In the illustrated example, the third portion13B is connected to a portion of the first portion11B adjacent to the fourth face124Ba. In addition, the third portion13B overlaps with the sixth face36, as viewed in the z-direction. The fourth portion14B is shifted from the first portion11B in the z-direction, to the side to which the main surface111B is oriented. The end portion of the fourth portion14B is flush with the sixth face76of the resin7.

The second portion12B is connected to the fourth portion14B, and corresponds to a portion of the lead1B sticking out from the encapsulating resin7. The second portion12B sticks out to the opposite side of the first portion11B, in the y-direction. The second portion12B is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion12B is bent in the z-direction, to the side to which the main surface111B is oriented.

The lead1C is located on the substrate3and, in this embodiment, on the first face31. The lead1C exemplifies a first lead in the present disclosure. The lead1C is bonded to the bonding section6C, via the bonding material81. In the case where the bonding section6C is not provided on the substrate3, the lead1C may be bonded to the substrate3.

The configuration of the lead1C is not specifically limited. In this embodiment the lead1C includes, as shown inFIG. 39,FIG. 41, andFIG. 43, a first portion11C, a second portion12C, a third portion13C, and a fourth portion14C, each of which will be described hereunder.

The first portion11C includes a main surface111C, a back surface112C, a first face121C, a second face122C, a third face123C, a fourth face124Ca, a fifth face125C, a sixth face126Ca, a seventh face127Ca, an eighth face128C, a ninth face129C, a tenth face124Cb, an eleventh face126Cb, a twelfth face127Cb, a plurality of recesses1111C, and a groove1112C. The first portion11C overlaps with the sixth face36of the substrate3, as viewed in the z-direction.

The main surface111C is oriented in the same direction as the first face31, in the z-direction.

The back surface112C is oriented to the opposite side of the main surface111C in the z-direction and, in the illustrated example, a planar surface. The back surface112C is bonded to the bonding section6C via the bonding material81.

The first face121C is located between the main surface111C and the back surface112C in the z-direction, and oriented in the same direction as the third face33as a whole, in the x-direction. In the illustrated example, the first face121C is connected to the main surface111C and the back surface112C. The first face121C is opposed to the second face122B.

The second face122C is located on the opposite side of the first face121C in the x-direction, and oriented in the same direction as the fourth face34, in the x-direction. The second face122C is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C. The second face122C is generally the same in size in the y-direction, as the first face121C (exactly the same, or different by within ±5%).

The third face123C is located between the first face121C and the second face122C in the x-direction, and oriented in the same direction as the fifth face35, in the y-direction. The third face123C is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C.

The fourth face124Ca is located on the side of the sixth face36in the y-direction, with respect to the first face121C and the second face122C, and extends along the x-direction. The fourth face124Ca is oriented in the same direction as the fifth face35in the y-direction, and opposed to the fifth face125B. The fourth face124Ca is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C. In the illustrated example, the fourth face124Ca overlaps with the first portion11B, as viewed in the y-direction. The tenth face124Cb is located on the side of the sixth face36in the y-direction, with respect to the first face121C and the second face122C, and extends along the x-direction. The tenth face124Cb is oriented in the same direction as the sixth face36in the y-direction. The tenth face124Cb is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C. In the illustrated example, the tenth face124Cb overlaps with the first portion11B, as viewed in the y-direction.

The fifth face125C is located between the second face122C and the fourth face124Ca in the x-direction, at a position close to the second face122C. The fifth face125C extends along the x-direction. The fifth face125C overlaps with the third face123C, as viewed in the y-direction. The fifth face125C is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C.

The sixth face126Ca is inclined with respect to the x-direction and the y-direction. In the illustrated example, the sixth face126Ca is connected to the fourth face124C and the fifth face125C. The sixth face126Ca is connected to the first face121C and the fourth face124Ca, and opposed to the eighth face1283. The sixth face126Ca is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C. The eleventh face126Cb is inclined with respect to the x-direction and the y-direction. In the illustrated example, the eleventh face126Cb is connected to the tenth face124Cb and the fifth face125C. The eleventh face126Cb is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C.

The seventh face127Ca is located between the first face121C and the third face123C in the x-direction, and between the first face121C and the third face123C in the y-direction. The seventh face127Ca is connected to the first face121C and the third face123C. In the illustrated example, the seventh face127Ca forms a convex curved surface, as viewed in the z-direction. The seventh face127Ca is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C, The twelfth face127Cb is located between the second face122C and the third face123C in the x-direction, and between the second face122C and the third face123C in the y-direction. The twelfth face127Cb is connected to the second face122C and the third face123C. In the illustrated example, the twelfth face127Cb forms a convex curved surface, as viewed in the z-direction. The twelfth face127Cb is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C.

The eighth face128C is located between the second face122C and the fifth face125C in the x-direction and the y-direction, and connected to the second face122C and the fifth face125C. In the illustrated example, the eighth face128C is inclined with respect to the x-direction and the y-direction. The eighth face128C is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C.

The ninth face129C is connected to the end portion of the fourth face124C on the side of the third face33in the x-direction. The ninth face129C is inclined with respect to the x-direction and the y-direction. The ninth face129C is opposed to the sixth face126B. The ninth face129C is located between the main surface111C and the back surface112C in the z-direction and, in the illustrated example, connected to the main surface111C and the back surface112C.

In the illustrated example, the third face123C includes a plurality of protrusions131C. The plurality of protrusions131C each protrude outwardly of the first portion11C as viewed in the z-direction, and extend along the z-direction. Here, the plurality of protrusions131C may be formed on the first portion11C, in portions other than the third face123C. In addition, the third face123C may be without the plurality of protrusions131C.

The plurality of recesses1111C are each recessed from the main surface111C in the z-direction. The shape of the recess1111C in a z-direction view is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular. In the illustrated example, the plurality of recesses1111C are arranged in a matrix pattern.

The groove1112C is recessed from the main surface111C in the z-direction. In the illustrated example, the shape of the groove1112C in a z-direction view is not specifically limited and, in the illustrated example, the groove1112C includes a rectangular section, and a section extending along the x-direction inside the rectangular shape. The cross-sectional shape of the groove1112C is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular.

The number of rows of the plurality of recesses1111C in the y-direction is larger in the region between the groove1112C and the tenth face124Cb, than in the region between the groove1112C and the third face123C.

The third portion13C and the fourth portion14C are covered with the encapsulating resin7. The third portion13C is connected to the first portion11C and the fourth portion14C. In the illustrated example, the third portion13C is connected to a portion of the first portion11C adjacent to the fourth face124Ca. The fourth portion14C is, like the fourth portion14B of the lead1B, shifted from the first portion11C in the z-direction, to the side to which the main surface111C is oriented. The end portion of the fourth portion14C is flush with the sixth face76of the resin7.

The second portion12C is connected to the end portion of the fourth portion14C, and corresponds to a portion of the lead1C sticking out from the encapsulating resin7. The second portion12C sticks out to the opposite side of the first portion11C, in the y-direction. The second portion12C is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion12C is bent in the z-direction, to the side to which the main surface111C is oriented.

The lead1D is located on the substrate3and, in this embodiment, on the first face31. The lead1D exemplifies a first lead in the present disclosure. The lead1D is bonded to the bonding section6D, via the bonding material81. In the case where the bonding section6D is not provided on the substrate3, the lead1D may be bonded to the substrate3.

The configuration of the lead1D is not specifically limited. In this embodiment the lead1D includes, as shown inFIG. 4andFIG. 14, a first portion11D, a second portion12D, a third portion13D, and a fourth portion14D, each of which will be described hereunder.

As shown inFIG. 41andFIG. 43, the first portion11D includes a main surface111D, a back surface112D, a first face121D, a second face122D, a third face123D, a fourth face124Da, a sixth face126D, a seventh face127Da, an eighth face128D, a ninth face129D, a tenth face124Db, an eleventh face127Db, a plurality of recesses1111D, and a groove1112D. The first portion11D overlaps with the sixth face36of the substrate3, as viewed in the z-direction.

The main surface111D is oriented in the same direction as the first face31, in the z-direction.

The back surface112D is oriented to the opposite side of the main surface111D in the z-direction and, in the illustrated example, a planar surface. The back surface112D is bonded to the bonding section6D via the bonding material81.

The first face121D is located between the main surface111D and the back surface112D in the z-direction, and oriented in the same direction as the third face33as a whole, in the x-direction. In the illustrated example, the first face121D is connected to the main surface111D and the back surface112D. The first face121D is opposed to the second face122C.

The second face122D is located on the opposite side of the first face121D in the x-direction, and oriented in the same direction as the fourth face34, in the x-direction. The second face122D is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D. The second face122D is larger in size in the y-direction, than the first face121D.

The third face123D is located between the first face121D and the second face122D in the x-direction, and oriented in the same direction as the fifth face35, in the y-direction. The third face123D is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D.

The fourth face124Da is located on the side of the sixth face36in the y-direction, with respect to the first face121D and the second face122D, and extends along the x-direction. The fourth face124Da is oriented in the same direction as the fifth face35in the y-direction, and opposed to the fifth face125C. The fourth face124Da is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D. In the illustrated example, the fourth face124Da overlaps with the first portion11C, as viewed in the y-direction. The tenth face124Db is located on the side of the sixth face36in the y-direction, with respect to the first face121D and the second face122D, and extends along the x-direction. The tenth face124Db is oriented in the same direction as the sixth face36in the y-direction. The tenth face124Db is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D. In the illustrated example, the tenth face124Db overlaps with the first portion11C, as viewed in the y-direction.

The sixth face126D is located between the first face121D and the fourth face124Da, in the x-direction and the y-direction. In the illustrated example, the sixth face126D is connected to the first face121D and the fourth face124Da. The sixth face126D is inclined with respect to the x-direction and the y-direction. The sixth face126D is opposed to the eighth face128C. The sixth face126D is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D.

The seventh face127Da is located between the first face121D and the third face123D, and between the second face122D and the third face123D in the x-direction, and between the first face121D and second face122D, and the third face123D, in the y-direction. The seventh face127Da is connected to the first face121D and the third face123D. In the illustrated example, the seventh face127Da forms a convex curved surface, as viewed in the z-direction. The seventh face127Da is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D. The eleventh face127Db is located between the second face122D and the third face123D in the x-direction, and between the second face122D and the third face123D in the y-direction. The eleventh face127Db is connected to the second face122D and the third face123D. In the illustrated example, the eleventh face127Db forms a convex curved surface, as viewed in the z-direction. The eleventh face127Db is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D.

The eighth face128D is located between the second face122D and the tenth face124Db in the x-direction and the y-direction, and connected to the second face122D and the tenth face124Db. In the illustrated example, the eighth face128D is inclined with respect to the x-direction and the y-direction. The eighth face128D is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D.

The ninth face129D is connected to the end portion of the fourth face124Da on the side of the third face33in the x-direction. The ninth face129D is inclined with respect to the x-direction and the y-direction. The ninth face129D is opposed to the sixth face126C. The ninth face129D is located between the main surface111D and the back surface112D in the z-direction and, in the illustrated example, connected to the main surface111D and the back surface112D.

In the illustrated example, the second face122D and the third face123D each include a plurality of protrusions131D. The plurality of protrusions131D each protrude outwardly of the first portion11D as viewed in the z-direction, and extend along the z-direction. Here, the plurality of protrusions131D may be formed on the first portion11D, in portions other than the second face122D and the third face123D. In addition, at least one of the second face122D and the third face123D may be without the plurality of protrusions131D.

The plurality of recesses1111D are each recessed from the main surface111D in the z-direction. The shape of the recess1111D in a z-direction view is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular. In the illustrated example, the plurality of recesses1111D are arranged in a matrix pattern.

The groove1112D is recessed from the main surface111D in the z-direction. In the illustrated example, the shape of the groove1112D in a z-direction view is not specifically limited and, in the illustrated example, the groove1112D includes a rectangular section, and a section extending along the x-direction inside the rectangular shape. The cross-sectional shape of the groove1112D is not specifically limited, and may be, for example, circular, elliptical, rectangular, or triangular.

The number of rows of the plurality of recesses1111D in the y-direction is larger in the region between the groove1112D and the tenth face124Db, than in the region between the groove1112D and the third face123D.

The third portion13D and the fourth portion14D are covered with the encapsulating resin7. The third portion13D is connected to the first portion11D and the fourth portion14D. In the illustrated example, the third portion13D is connected to a portion of the first portion11D adjacent to the fourth face124Da. The fourth portion14D is, like the fourth portion14B of the lead1B, shifted from the first portion11D in the z-direction, to the side to which the main surface111D is oriented. The end portion of the fourth portion14D is flush with the sixth face76of the resin7.

The second portion12D is connected to the end portion of the fourth portion14D, and corresponds to a portion of the lead1D sticking out from the encapsulating resin7. The second portion12D sticks out to the opposite side of the first portion11D, in the y-direction. The second portion12D is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion12D is bent in the z-direction, to the side to which the main surface111D is oriented.

The lead1E is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1E located on the side to which the sixth face36is oriented, with respect to the substrate3in the y-direction.

The configuration of the lead1E is not specifically limited. In this embodiment the lead1E includes, as shown inFIG. 4, a second portion12E and a fourth portion14E, each of which will be described hereunder.

The fourth portion14E is covered with the encapsulating resin7. The fourth portion14E is, like the fourth portion14D of the lead1D, shifted from the first portion11E in the z-direction, to the side to which the main surface111E is oriented. The fourth portion14E overlaps with the first portion11C and the first portion11D, as viewed in the y-direction. The end portion of the fourth portion14E is flush with the sixth face76of the resin7.

The second portion12E is connected to the end portion of the fourth portion14E, and corresponds to a portion of the lead1E sticking out from the encapsulating resin7. The second portion12E sticks out to the opposite side of the fourth portion14E, in the y-direction. The second portion12E is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion12E is bent in the z-direction, to the side to which the first face31is oriented.

The lead1F is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1F is located on the side to which the sixth face36is oriented, with respect to the substrate3in the y-direction. The lead1F is located on the opposite side of the fourth portion14D, across the lead1E.

The configuration of the lead1F is not specifically limited. In this embodiment the lead1F includes, as shown inFIG. 4, a second portion12F and a fourth portion14F, each of which will be described hereunder.

The fourth portion14F is covered with the encapsulating resin7. The fourth portion14F is, like the fourth portion14D of the lead1D, shifted from the first portion11D in the z-direction, to the side to which the main surface111D is oriented. The fourth portion14F overlaps with the first portion11D, as viewed in the y-direction. The end portion of the fourth portion14F is flush with the sixth face76of the resin7.

The second portion12F is connected to the end portion of the fourth portion14F, and corresponds to a portion of the lead1F sticking out from the encapsulating resin7. The second portion12F sticks out to the opposite side of the fourth portion14F, in the y-direction. The second portion12F is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion12F is bent in the z-direction, to the side to which the first face31is oriented.

The lead1G is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1G is located on the side to which the fourth face34is oriented, with respect to the substrate3in the x-direction. The lead1G is located on the opposite side of the fourth portion14E, across the lead1F.

The configuration of the lead1G is not specifically limited. In this embodiment the lead1G includes, as shown inFIG. 4, a second portion12G and a fourth portion14G, each of which will be described hereunder.

The fourth portion14G is covered with the encapsulating resin7. The fourth portion14G is, like the fourth portion14D of the lead1D, shifted from the first portion11D in the z-direction, to the side to which the main surface111D is oriented. The fourth portion14G overlaps with the fourth portion14F, as viewed in the y-direction. In addition, the fourth portion14G overlaps with the first portion11D, as viewed in the x-direction. The end portion of the fourth portion14G is flush with the sixth face76of the resin7.

The second portion12G is connected to the end portion of the fourth portion14G, and corresponds to a portion of the lead1G sticking out from the encapsulating resin7. The second portion12G sticks out to the opposite side of the fourth portion14G, in the y-direction. The second portion12G is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion12G is bent in the z-direction, to the side to which the first face31is oriented.

As shown inFIG. 39, the pair of second portions12A are aligned with a clearances G11therebetween, as viewed in the x-direction. The second portions12A to12E are aligned in the x-direction, with clearances G12between each other. The difference among the clearances G12is within ±5% from each other. The clearances G12are wider than the clearance G11. The second portions12E to G are aligned in the x-direction, with clearances G13between each other. The clearances G13are narrower than the clearances G12and, in the illustrated example, also narrower than the clearance G11. The difference among the clearances G13is within ±5% from each other.

In this embodiment, as shown inFIG. 42andFIG. 43, the main surface111A includes three first regions Ra, Rb, and Rc, and three second regions R1a, R1b, and R1c, defined by the groove1112A. The three first regions Ra, Rb, and Rc are located on the side of the lead2, in the y-direction. The shape of the three first regions Ra, Rb, and Rc is not specifically limited. In the illustrated example, the mentioned regions have an elongate rectangular shape having the long sides extending along the y-direction, as viewed in the z-direction. The three first regions Ra, Rb, and Rc overlap with each other, as viewed in the x-direction. In the illustrated example, further, the three first regions Ra, Rb, and Rc generally coincide with each other, as viewed in the x-direction. Here, the expression “generally coincide” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first region Ra, Rb, or Rc in the y-direction).

The three second regions R1a, R1b, and R1care located on the opposite side of the lead2with respect to the first regions Ra, Rb, and Rc, in the y-direction. The shape of the three second regions R1a, R1b, and R1cis not specifically limited. In the illustrated example, the mentioned regions have a rectangular shape, as viewed in the z-direction. The three second regions R1a, R1b, and R1coverlap with each other, as viewed in the x-direction. In the illustrated example, further, the three second regions R1a, R1b, and R1cgenerally coincide with each other, as viewed in the x-direction. Here, the expression “generally coincide” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second region R1a, R1b, or R1cin the y-direction).

The sizes of the three first regions Ra, Rb, and Rc, and the three second regions R1a, R1b, and R1c, are not specifically limited. In the illustrated example, a size y1of the first regions Ra, Rb, and Rc in the y-direction is larger than a size y2of the second regions R1a, R1b, and R1cin the y-direction.

The main surface111B includes a first region Rd and a second region R1d, defined by the groove1112B. The first region Rd is located on the side of the lead2, in the y-direction. The shape of the first region Rd is not specifically limited. In the illustrated example, the first region Rd has an elongate rectangular shape having the long sides extending along the y-direction, as viewed in the z-direction. The second region R1dis located on the opposite side of the lead2with respect to the first region Rd, in the y-direction. The shape of the second region R1dis not specifically limited. In the illustrated example, the second region R1dhas a rectangular shape, as viewed in the z-direction.

The main surface111C includes a first region Re and a second region R1e, defined by the groove1112C. The first region Re is located on the side of the lead2, in the y-direction. The shape of the first region Re is not specifically limited. In the illustrated example, the first region Re has an elongate rectangular shape having the long sides extending along the y-direction, as viewed in the z-direction. The second region R1eis located on the opposite side of the lead2with respect to the first region Re, in the y-direction. The shape of the second region R1eis not specifically limited. In the illustrated example, the second region R1ehas a rectangular shape, as viewed in the z-direction.

The main surface111D includes a first region Rf and a second region R1f, defined by the groove1112D. The first region Rf is located on the side of the lead2, in the y-direction. The shape of the first region Rf is not specifically limited. In the illustrated example, the first region Rf has an elongate rectangular shape having the long sides extending along the y-direction, as viewed in the z-direction. The second region R1fis located on the opposite side of the lead2with respect to the first region Rf, in the y-direction. The shape of the second region R1fis not specifically limited. In the illustrated example, the second region R1fhas a rectangular shape, as viewed in the z-direction.

The three first regions Rd, Re, and Rf overlap with each other, as viewed in the x-direction. In addition, in the illustrated example, the three first regions Rd, Re, and Rf generally coincide with each other, as viewed in the x-direction. Here, the expression “generally coincide” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first region Rd, Re, or Rf in the y-direction). The three second regions R1d, R1e, and R1foverlap with each other, as viewed in the x-direction. In the illustrated example, further, the three second regions R1d, R1e, and R1fgenerally coincide with each other, as viewed in the x-direction. Here, the expression “generally coincide” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the second region R1d, R1e, or R1fin the y-direction).

The sizes of the three first regions Rd, Re, and Rf and the three second regions R1d, R1e, and R1fare not specifically limited. In the illustrated example, the size y1of the first regions Rd, Re, and Rf in the y-direction is larger than the size y2of the second regions R1d, R1e, and R1fin the y-direction.

Regarding the lead2according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the lead2according to the first embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment.

The plurality of leads2contain a metal, and have higher heat dissipation characteristics, for example than the substrate3. The metal to form the lead2is not specifically limited, and may be, for example, copper (Cu), aluminum, iron (Fe), oxygen-free copper, or an alloy of the cited metals, such as a Cu—Sn alloy, a Cu—Zr alloy, or a Cu—Fe alloy. The plurality of leads2may be plated with nickel (Ni). Examples of the forming method of the plurality of leads2include pressing a metal plate with a die, and patterning a metal plate by etching, without limitation thereto. The thickness of the lead2is not specifically limited, but may be, for example, approximately 0.4 mm to 0.8 mm. The plurality of leads2are located so as to overlap with the second region303, as viewed in the z-direction.

In this embodiment, the plurality of leads2include a plurality of leads2A to2U, as shown inFIG. 35toFIG. 40,FIG. 44, andFIG. 45. The plurality of leads2A to2H, and2S to2U respectively constitute conduction paths to the control chips4G and4H. The plurality of leads2I to2R constitute conduction paths to the primary-side circuit chip4J.

The lead2A is spaced apart from the plurality of leads1. The lead2A is located on the conductive section5. The lead2A is electrically connected to the conductive section5. The lead2A exemplifies a second lead in the present disclosure. The lead2A is bonded to the second portion52A of the wiring50A in the conductive section5, via a conductive bonding material82. The conductive bonding material82may be any material that is capable of bonding, and electrically connecting, the lead2A to the second portion52A. For example, silver paste, copper paste, or solder may be employed as the conductive bonding material82. The conductive bonding material82corresponds to the first conductive bonding material in the present disclosure.

The configuration of the lead2A is not specifically limited. In this embodiment the lead2A includes, as shown inFIG. 44, a first portion21A, a second portion22A, a third portion23A, and a fourth portion24A, each of which will be described hereunder.

The first portion21A is bonded to the second portion52A of the wiring50A. The shape of the first portion21A is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21A has a bent shape including a portion extending along the x-direction, and a portion extending along the y-direction. The first portion21A overlaps with the third face33of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the third face33is oriented. In the illustrated example, the first portion21A overlaps with the second portion52A, as viewed in the z-direction. In addition, the first portion21A includes a through hole211A. The through hole211A is formed so as to penetrate through the first portion21A, in the z-direction. The inside of the through hole211A is filled with the conductive bonding material82, like a through hole211I in a first portion21I of the lead2I shown inFIG. 40. The conductive bonding material82covers a part of the surface of the lead2A. However, the conductive bonding material82may be provided only inside the through hole211A, so as not to reach the surface of the lead2A.

The third portion23A and the fourth portion24A are covered with the encapsulating resin7. The third portion23A is connected to the first portion21A and the fourth portion24A. The fourth portion24A is shifted in the z-direction with respect to the first portion21A, to the side to which the first face31is oriented, like a third portion23I and a fourth portion24I of the lead2I shown inFIG. 40. The end portion of the fourth portion24A is flush with a fifth face75of the resin7. In the illustrated example, the third portion23A and the fourth portion24A generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23A, or fourth portion24A in the x-direction).

The second portion22A is connected to the end portion of the fourth portion24A, and corresponds to a portion of the lead2A sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22A sticks out to the opposite side of the first portion21A, in the y-direction. The second portion22A is used, for example, to electrically connect the semiconductor device A1to an external circuit. In the illustrated example, the second portion22A is bent in the z-direction, to the side to which the first face31is oriented. The second portion22A, the third portion23A, and the fourth portion24A each include, on the respective sides thereof in the x-direction, edges extending along the y-direction.

The lead2B is spaced apart from the plurality of leads1. The lead2B is located on the conductive section5. The lead2B is electrically connected to the conductive section5. The lead2B exemplifies a second lead in the present disclosure. The lead2B is bonded to the second portion52B of the wiring50B in the conductive section5, via the conductive bonding material82.

The configuration of the lead2B is not specifically limited. In this embodiment the lead2B includes, as shown inFIG. 44, a first portion21B, a second portion22B, a third portion23B, and a fourth portion24B, each of which will be described hereunder.

The first portion21B is bonded to the second portion52B of the wiring50B. The shape of the first portion21B is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21B has a bent shape including a portion inclined with respect to the x-direction and the y-direction, and a portion extending along the y-direction. The first portion21B overlaps with the third face33of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the third face33is oriented. In the illustrated example, the first portion21B overlaps with the second portion52B, as viewed in the z-direction. In addition, the first portion21B includes a through hole211B. The through hole211B is formed so as to penetrate through the first portion21B, in the z-direction. The inside of the through hole21B is filled with the conductive bonding material82, like the through hole211I in the first portion21I of the lead2I shown inFIG. 40. The conductive bonding material82covers a part of the surface of the lead2B. However, the conductive bonding material82may be provided only inside the through hole211B, so as not to reach the surface of the lead2B.

The third portion23B and the fourth portion24B are covered with the encapsulating resin7. The third portion23B is connected to the first portion21B and the fourth portion24B. The fourth portion24B is shifted in the z-direction with respect to the first portion21B, to the side to which the first face31is oriented, like the third portion23I and the fourth portion24I of the lead2I shown inFIG. 40. The end portion of the fourth portion24B is flush with the fifth face75of the resin7. In the illustrated example, the third portion23B and the fourth portion24B generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23B or fourth portion24B in the x-direction).

The second portion22B is connected to the end portion of the fourth portion24B, and corresponds to a portion of the lead2B sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22B sticks out to the opposite side of the first portion21B, in the y-direction. The second portion22B is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22B is bent in the z-direction, to the side to which the first face31is oriented. The second portion22B, the third portion23B, and the fourth portion24B each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22B, the third portion23B, and the fourth portion24B, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22A, the third portion23A, and the fourth portion24A, on the side of the fourth face34in the x-direction.

The lead2C is spaced apart from the plurality of leads1. The lead2C is located on the conductive section5. The lead2C is electrically connected to the conductive section5. The lead2C exemplifies a second lead in the present disclosure. The lead2C is bonded to the second portion52C of the wiring50C in the conductive section5, via the conductive bonding material82.

The configuration of the lead2C is not specifically limited. In this embodiment the lead2C includes, as shown inFIG. 44, a first portion21C, a second portion22C, a third portion23C, and a fourth portion24C, each of which will be described hereunder.

The first portion21C is bonded to the second portion52C of the wiring50C. The shape of the first portion21C is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21C has a bent shape including two portions extending along the y-direction, and a portion interposed therebetween and inclined with respect to the x-direction and the y-direction. The first portion21C overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21C overlaps with the second portion52C, as viewed in the z-direction. In addition, the first portion21C includes a through hole211C. The through hole211C is formed so as to penetrate through the first portion21C, in the z-direction. The inside of the through hole211C is filled with the conductive bonding material82, like the through hole211I in the first portion21I of the lead2I shown inFIG. 40. The conductive bonding material82covers a part of the surface of the lead2C. However, the conductive bonding material82may be provided only inside the through hole211C, so as not to reach the surface of the lead2C.

The third portion23C and the fourth portion24C are covered with the encapsulating resin7. The third portion23C is connected to the first portion21C and the fourth portion24C. The fourth portion24C is shifted in the z-direction with respect to the first portion21C, to the side to which the first face31is oriented, like the third portion23I and the fourth portion24I of the lead2I shown inFIG. 40. The end portion of the fourth portion24C is flush with the fifth face75of the resin7. In the illustrated example, the third portion23C and the fourth portion24C generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23C or fourth portion24C in the x-direction).

The second portion22C is connected to the end portion of the fourth portion24C, and corresponds to a portion of the lead2C sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22C sticks out to the opposite side of the first portion21C, in the y-direction. The second portion22C is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22C is bent in the z-direction, to the side to which the first face31is oriented. The second portion22C, the third portion23C, and the fourth portion24C each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22C, the third portion23C, and the fourth portion24C, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22B, the third portion23B, and the fourth portion24B, on the side of the fourth face34in the x-direction.

The lead2D is spaced apart from the plurality of leads1. The lead2D is located on the conductive section5. The lead2D is electrically connected to the conductive section5. The lead2D exemplifies a second lead in the present disclosure. The lead2D is bonded to the second portion52D of the wiring50D in the conductive section5, via the conductive bonding material82.

The configuration of the lead2D is not specifically limited. In this embodiment the lead2D includes, as shown inFIG. 44, a first portion21D, a second portion22D, a third portion23D, and a fourth portion24D, each of which will be described hereunder.

The first portion21D is bonded to the second portion52D of the wiring50D. The shape of the first portion21D is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21D has a bent shape including two portions extending along the y-direction, and a portion interposed therebetween and inclined with respect to the x-direction and the y-direction. The first portion21D overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21D overlaps with the second portion52D, as viewed in the z-direction. In addition, the first portion21D includes a through hole211D. The through hole211D is formed so as to penetrate through the first portion21D, in the z-direction. The inside of the through hole211D is filled with the conductive bonding material82, like the through hole211I in the first portion21I of the lead2I shown inFIG. 40. The conductive bonding material82covers a part of the surface of the lead2D. However, the conductive bonding material82may be provided only inside the through hole211D, so as not to reach the surface of the lead2D.

The third portion23D and the fourth portion24D are covered with the encapsulating resin7. The third portion23D is connected to the first portion21D and the fourth portion24D. The fourth portion24D is shifted in the z-direction with respect to the first portion21D, to the side to which the first face31is oriented, like the third portion23I and the fourth portion24I of the lead2I shown inFIG. 40. The end portion of the fourth portion24D is flush with the fifth face75of the resin7. In the illustrated example, the third portion23D and the fourth portion24D generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23D or fourth portion24D in the x-direction).

The second portion22D is connected to the end portion of the fourth portion24D, and corresponds to a portion of the lead2D sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22D sticks out to the opposite side of the first portion21D, in the y-direction. The second portion22D is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22D is bent in the z-direction, to the side to which the first face31is oriented. The second portion22D, the third portion23D, and the fourth portion24D each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22D, the third portion23D, and the fourth portion24D, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22C, the third portion23C, and the fourth portion24C, on the side of the fourth face34in the x-direction.

The lead2E is spaced apart from the plurality of leads1. The lead2E is located on the conductive section5. The lead2E is electrically connected to the conductive section5. The lead2E exemplifies a second lead in the present disclosure. The lead2E is bonded to the second portion52E of the wiring50E in the conductive section5, via the conductive bonding material82.

The configuration of the lead2E is not specifically limited. In this embodiment the lead2E includes, as shown inFIG. 44, a first portion21E, a second portion22E, a third portion23E, and a fourth portion24E, each of which will be described hereunder.

The first portion21E is bonded to the second portion52E of the wiring50E. The shape of the first portion21E is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21E has a bent shape including two portions extending along the y-direction, and a portion interposed therebetween and inclined with respect to the x-direction and the y-direction. The first portion21E overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21E overlaps with the second portion52E, as viewed in the z-direction. In addition, the first portion21E includes a through hole211E. The through hole211E is formed so as to penetrate through the first portion21E, in the z-direction. The inside of the through hole211E is filled with the conductive bonding material82, like the through hole211I in the first portion21I of the lead2I shown inFIG. 40. The conductive bonding material82covers a part of the surface of the lead2E. However, the conductive bonding material82may be provided only inside the through hole211E, so as not to reach the surface of the lead2E.

The third portion23E and the fourth portion24E are covered with the encapsulating resin7. The third portion23E is connected to the first portion21E and the fourth portion24E. The fourth portion24E is shifted in the z-direction with respect to the first portion21E, to the side to which the first face31is oriented, like the third portion23I and the fourth portion24I of the lead2I shown inFIG. 40. The end portion of the fourth portion24E is flush with the fifth face75of the resin7. In the illustrated example, the third portion23E and the fourth portion24E generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23E or fourth portion24E in the x-direction).

The second portion22E is connected to the end portion of the fourth portion24E, and corresponds to a portion of the lead2E sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22E sticks out to the opposite side of the first portion21E, in the y-direction. The second portion22E is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22E is bent in the z-direction, to the side to which the first face31is oriented. The second portion22E, the third portion23E, and the fourth portion24E each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22E, the third portion23E, and the fourth portion24E, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22D, the third portion23D, and the fourth portion24D, on the side of the fourth face34in the x-direction.

The lead2F is spaced apart from the plurality of leads1. The lead2F is located on the conductive section5. The lead2F is electrically connected to the conductive section5. The lead2F exemplifies a second lead in the present disclosure. The lead2F is bonded to the second portion52F of the wiring50F in the conductive section5, via the conductive bonding material82.

The configuration of the lead2F is not specifically limited. In this embodiment the lead2F includes, as shown inFIG. 44, a first portion21F, a second portion22F, a third portion23F, and a fourth portion24F, each of which will be described hereunder.

The first portion21F is bonded to the second portion52F of the wiring50F. The shape of the first portion21F is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21F has a bent shape including a portion extending along the y-direction, and a portion inclined with respect to the x-direction and the y-direction. The first portion21F overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21F overlaps with the second portion52F, as viewed in the z-direction. In addition, the first portion21F includes a through hole211F. The through hole211F is formed so as to penetrate through the first portion21F, in the z-direction. The inside of the through hole211F is filled with the conductive bonding material82, like the through hole211I in the first portion21I of the lead2I shown inFIG. 40. The conductive bonding material82covers a part of the surface of the lead2F. However, the conductive bonding material82may be provided only inside the through hole211F, so as not to reach the surface of the lead2F.

The third portion23F and the fourth portion24F are covered with the encapsulating resin7. The third portion23F is connected to the first portion21F and the fourth portion24F. The fourth portion24F is shifted in the z-direction with respect to the first portion21F, to the side to which the first face31is oriented, like the third portion23I and the fourth portion24I of the lead2I shown inFIG. 40. The end portion of the fourth portion24F is flush with the fifth face75of the resin7. In the illustrated example, the third portion23F and the fourth portion24F generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23F or fourth portion24F in the x-direction).

The second portion22F is connected to the end portion of the fourth portion24F, and corresponds to a portion of the lead2F sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22F sticks out to the opposite side of the first portion21F, in the y-direction. The second portion22F is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22F is bent in the z-direction, to the side to which the first face31is oriented. The second portion22F, the third portion23F, and the fourth portion24F each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22F, the third portion23F, and the fourth portion24F, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22E, the third portion23E, and the fourth portion24E, on the side of the fourth face34in the x-direction.

The lead2G is spaced apart from the plurality of leads1. The lead2G is located on the conductive section5. The lead2G is electrically connected to the conductive section5. The lead2G exemplifies a second lead in the present disclosure. The lead2G is bonded to the second portion52G of the wiring50G in the conductive section5, via the conductive bonding material82.

The configuration of the lead2G is not specifically limited. In this embodiment the lead2G includes, as shown inFIG. 44, a first portion21G, a second portion22G, a third portion23G, and a fourth portion24G, each of which will be described hereunder.

The first portion21G is bonded to the second portion52G of the wiring50G. The shape of the first portion21G is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21G has a strip shape extending along the y-direction. The first portion21G overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21G overlaps with the second portion52G, as viewed in the z-direction. In addition, the first portion21G includes a through hole211G. The through hole211E is formed so as to penetrate through the first portion21G, in the z-direction. The inside of the through hole211G is filled with the conductive bonding material82, like the through hole211I in the first portion21I of the lead2I shown inFIG. 40. The conductive bonding material82covers a part of the surface of the lead2G. However, the conductive bonding material82may be provided only inside the through hole211G, so as not to reach the surface of the lead2G.

The third portion23G and the fourth portion24G are covered with the encapsulating resin7. The third portion23G is connected to the first portion21G and the fourth portion24G. The fourth portion24G is shifted in the z-direction with respect to the first portion21G, to the side to which the first face31is oriented, like the third portion23I and the fourth portion24I of the lead2I shown inFIG. 40. The end portion of the fourth portion24G is flush with the fifth face75of the resin7. In the illustrated example, the third portion23G and the fourth portion24G generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23G or fourth portion24G in the x-direction).

The second portion22G is connected to the fourth portion24G, and corresponds to a portion of the lead2G sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22G sticks out to the opposite side of the first portion21G, in the y-direction. The second portion22G is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22G is bent in the z-direction, to the side to which the first face31is oriented. The second portion22G, the third portion23G, and the fourth portion24G each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22G, the third portion23G, and the fourth portion24G, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22F, the third portion23F, and the fourth portion24F, on the side of the fourth face34in the x-direction.

The lead2H is spaced apart from the plurality of leads1. The lead2H is located on the conductive section5. The lead2H is electrically connected to the conductive section5. The lead2H exemplifies a second lead in the present disclosure. The lead2H is bonded to the second portion52H of the wiring50H in the conductive section5, via the conductive bonding material82.

The configuration of the lead2H is not specifically limited. In this embodiment the lead2H includes, as shown inFIG. 44, a first portion21H, a second portion22H, a third portion23H, and a fourth portion24H, each of which will be described hereunder.

The first portion21H is bonded to the second portion52H of the wiring50H. The shape of the first portion21H is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21H has a strip shape extending along the y-direction. The first portion21H overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21H overlaps with the second portion52H, as viewed in the z-direction. In addition, the first portion21H includes a through hole211H. The through hole211H is formed so as to penetrate through the first portion21H, in the z-direction. The inside of the through hole211H is filled with the conductive bonding material82, like the through hole211I in the first portion21I of the lead2I shown inFIG. 40. The conductive bonding material82covers a part of the surface of the lead2H. However, the conductive bonding material82may be provided only inside the through hole211H, so as not to reach the surface of the lead2H.

The third portion23H and the fourth portion24H are covered with the encapsulating resin7. The third portion23H is connected to the first portion21H and the fourth portion24H. The fourth portion24H is shifted in the z-direction with respect to the first portion21H, to the side to which the first face31is oriented, like the third portion23I and the fourth portion24I of the lead2I shown inFIG. 40. The end portion of the fourth portion24H is flush with the fifth face75of the resin7. In the illustrated example, the third portion23H and the fourth portion24H generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23H or fourth portion24H in the x-direction).

The second portion22H is connected to the end portion of the fourth portion24H, and corresponds to a portion of the lead2H sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22H sticks out to the opposite side of the first portion21H, in the y-direction. The second portion22H is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22H is bent in the z-direction, to the side to which the first face31is oriented. The second portion22H, the third portion23H, and the fourth portion24H each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22H, the third portion23H, and the fourth portion24H, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22G, the third portion23G, and the fourth portion24G, on the side of the fourth face34in the x-direction.

The lead2I is spaced apart from the plurality of leads1. The lead2I is located on the conductive section5. The lead2I is electrically connected to the conductive section5. The lead2I exemplifies a second lead in the present disclosure. The lead2I is bonded to the second portion52I of the wiring50I in the conductive section5, via the conductive bonding material82.

The configuration of the lead2I is not specifically limited. In this embodiment the lead2I includes, as shown inFIG. 45, a first portion21I, a second portion22I, a third portion23I, and a fourth portion24I, each of which will be described hereunder.

The first portion21I is bonded to the second portion52I of the wiring50I. The shape of the first portion21I is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21I has a strip shape extending along the y-direction. The first portion21I overlaps with the fifth face35of the substrate3as viewed in the z-direction, and includes a portion sticking out in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21I overlaps with the second portion52I, as viewed in the z-direction. In addition, the first portion21I includes a through hole211I. The through hole211I is formed so as to penetrate through the first portion21I, in the z-direction. The inside of the through hole211I is filled with the conductive bonding material82, as shown inFIG. 40illustrating the lead2I. The conductive bonding material82covers a part of the surface of the lead2I. However, the conductive bonding material82may be provided only inside the through hole211I, so as not to reach the surface of the lead2I.

The third portion23I and the fourth portion24I are covered with the encapsulating resin7. The third portion23I is connected to the first portion21I and the fourth portion24I. The fourth portion24I is shifted in the z-direction with respect to the first portion21I, to the side to which the first face31is oriented, as shown inFIG. 40illustrating the lead2I. The end portion of the fourth portion24I is flush with the fifth face75of the resin7. In the illustrated example, the third portion23I and the fourth portion24I generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23I or fourth portion24I in the x-direction).

The second portion22I is connected to the end portion of the fourth portion24I, and corresponds to a portion of the lead2I sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22I sticks out to the opposite side of the first portion21I, in the y-direction. The second portion22I is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22I is bent in the z-direction, to the side to which the first face31is oriented. The second portion22I, the third portion23I, and the fourth portion24I each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22I, the third portion23I, and the fourth portion24I, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22H, the third portion23H, and the fourth portion24H, on the side of the fourth face34in the x-direction.

The lead2J is spaced apart from the plurality of leads1. The lead2J is located on the conductive section5. The lead2J is electrically connected to the conductive section5. The lead2J exemplifies a second lead in the present disclosure. The lead2J is bonded to the second portion52J of the wiring50J in the conductive section5, via the conductive bonding material82.

The configuration of the lead2J is not specifically limited. In this embodiment the lead2J includes, as shown inFIG. 45, a first portion21J, a second portion22J, a third portion23J, and a fourth portion24J, each of which will be described hereunder.

The first portion21J is bonded to the second portion52J of the wiring50J. The shape of the first portion21J is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21J has a strip shape extending along the y-direction. The first portion21J overlaps with the fifth face35of the substrate3as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21J overlaps with the second portion52J, as viewed in the z-direction. In addition, the first portion21J includes a through hole211J. The through hole211J is formed so as to penetrate through the first portion21J, in the z-direction. The inside of the through hole211J is filled with the conductive bonding material82, as illustrated inFIG. 45with regard to the lead2J. The conductive bonding material82covers a part of the surface of the lead2J. However, the conductive bonding material82may be provided only inside the through hole211J, so as not to reach the surface of the lead2J.

The third portion23J and the fourth portion24J are covered with the encapsulating resin7. The third portion23J is connected to the first portion21J and the fourth portion24J. The fourth portion24J is shifted in the z-direction with respect to the first portion21J, to the side to which the first face31is oriented, as illustrated inFIG. 40with regard to the lead2I. The end portion of the fourth portion24J is flush with the fifth face75of the resin7. In the illustrated example, the third portion23J and the fourth portion24J generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23J or fourth portion24J in the x-direction).

The second portion22J is connected to the end portion of the fourth portion24J, and corresponds to a portion of the lead2J sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22J sticks out to the opposite side of the first portion21J, in the y-direction. The second portion22J is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22J is bent in the z-direction, to the side to which the first face31is oriented. The second portion22J, the third portion23J, and the fourth portion24J each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22J, the third portion23J, and the fourth portion24J, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22I, the third portion23I, and the fourth portion24I, on the side of the fourth face34in the x-direction.

The lead2K is spaced apart from the plurality of leads1. The lead2K is located on the conductive section5. The lead2K is electrically connected to the conductive section5. The lead2K exemplifies a second lead in the present disclosure. The lead2K is bonded to the second portion52K of the wiring50K in the conductive section5, via the conductive bonding material82.

The configuration of the lead2K is not specifically limited. In this embodiment the lead2K includes, as shown inFIG. 45, a first portion21K, a second portion22K, a third portion23K, and a fourth portion24K, each of which will be described hereunder.

The first portion21K is bonded to the second portion52K of the wiring50K. The shape of the first portion21K is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21K has a strip shape extending along the y-direction. The first portion21K overlaps with the fifth face35of the substrate3as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21K overlaps with the second portion52K, as viewed in the z-direction. In addition, the first portion21K includes a through hole211K. The through hole211K is formed so as to penetrate through the first portion21K, in the z-direction. The inside of the through hole211K is filled with the conductive bonding material82, as illustrated inFIG. 45with regard to the lead2K. The conductive bonding material82covers a part of the surface of the lead2K. However, the conductive bonding material82may be provided only inside the through hole211K, so as not to reach the surface of the lead2K.

The third portion23K and the fourth portion24K are covered with the encapsulating resin7. The third portion23K is connected to the first portion21K and the fourth portion24K. The fourth portion24K is shifted in the z-direction with respect to the first portion21K, to the side to which the first face31is oriented, as illustrated inFIG. 40with regard to the lead2I. The end portion of the fourth portion24K is flush with the fifth face75of the resin7. In the illustrated example, the third portion23K and the fourth portion24K generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23K or fourth portion24K in the x-direction).

The second portion22K is connected to the end portion of the fourth portion24K, and corresponds to a portion of the lead2K sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22K sticks out to the opposite side of the first portion21K, in the y-direction. The second portion22K is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22K is bent in the z-direction, to the side to which the first face31is oriented. The second portion22K, the third portion23K, and the fourth portion24K each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22K, the third portion23K, and the fourth portion24K, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22J, the third portion23J, and the fourth portion24J, on the side of the fourth face34in the x-direction.

The lead2L is spaced apart from the plurality of leads1. The lead2L is located on the conductive section5. The lead2L is electrically connected to the conductive section5. The lead2L exemplifies a second lead in the present disclosure. The lead2L is bonded to the second portion52L of the wiring50L in the conductive section5, via the conductive bonding material82.

The configuration of the lead2L is not specifically limited. In this embodiment the lead2L includes, as shown inFIG. 45, a first portion21L, a second portion22L, a third portion23L, and a fourth portion24L, each of which will be described hereunder.

The first portion21L is bonded to the second portion52L of the wiring50L. The shape of the first portion21L is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21L has a strip shape extending along the y-direction. The first portion21L overlaps with the fifth face35of the substrate3as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21L overlaps with the second portion52L, as viewed in the z-direction. In addition, the first portion21L includes a through hole211L. The through hole211L is formed so as to penetrate through the first portion21L, in the z-direction. The inside of the through hole211L is filled with the conductive bonding material82, as illustrated inFIG. 45with regard to the lead2L. The conductive bonding material82covers a part of the surface of the lead2L. However, the conductive bonding material82may be provided only inside the through hole211L, so as not to reach the surface of the lead2L.

The third portion23L and the fourth portion24L are covered with the encapsulating resin7. The third portion23L is connected to the first portion21L and the fourth portion24L. The fourth portion24L is shifted in the z-direction with respect to the first portion21L, to the side to which the first face31is oriented, as illustrated inFIG. 40with regard to the lead2I. The end portion of the fourth portion24L is flush with the fifth face75of the resin7. In the illustrated example, the third portion23L and the fourth portion24L generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23L or fourth portion24L in the x-direction).

The second portion22L is connected to the end portion of the fourth portion24L, and corresponds to a portion of the lead2L sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22L sticks out to the opposite side of the first portion21L, in the y-direction. The second portion22L is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22L is bent in the z-direction, to the side to which the first face31is oriented. The second portion22L, the third portion23L, and the fourth portion24L each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22L, the third portion23L, and the fourth portion24L, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22K, the third portion23K, and the fourth portion24K, on the side of the fourth face34in the x-direction.

The lead2M is spaced apart from the plurality of leads1. The lead2M is located on the conductive section5. The lead2M is electrically connected to the conductive section5. The lead2M exemplifies a second lead in the present disclosure. The lead2M is bonded to the second portion52M of the wiring50M in the conductive section5, via the conductive bonding material82.

The configuration of the lead2M is not specifically limited. In this embodiment the lead2M includes, as shown inFIG. 45, a first portion21M, a second portion22M, a third portion23M, and a fourth portion24M, each of which will be described hereunder.

The first portion21M is bonded to the second portion52M of the wiring50M. The shape of the first portion21M is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21M has a strip shape extending along the y-direction. The first portion21M overlaps with the fifth face35of the substrate3as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21M overlaps with the second portion52M, as viewed in the z-direction. In addition, the first portion21M includes a through hole211M. The through hole211M is formed so as to penetrate through the first portion21M, in the z-direction. The inside of the through hole211M is filled with the conductive bonding material82, as illustrated inFIG. 45with regard to the lead2M. The conductive bonding material82covers a part of the surface of the lead2M. However, the conductive bonding material82may be provided only inside the through hole211M, so as not to reach the surface of the lead2M.

The third portion23M and the fourth portion24M are covered with the encapsulating resin7. The third portion23M is connected to the first portion21M and the fourth portion24M. The fourth portion24M is shifted in the z-direction with respect to the first portion21M, to the side to which the first face31is oriented, as illustrated inFIG. 40with regard to the lead2I. The end portion of the fourth portion24M is flush with the fifth face75of the resin7. In the illustrated example, the third portion23M and the fourth portion24M generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23M or fourth portion24M in the x-direction).

The second portion22M is connected to the end portion of the fourth portion24M, and corresponds to a portion of the lead2M sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22M sticks out to the opposite side of the first portion21M, in the y-direction. The second portion22M is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22M is bent in the z-direction, to the side to which the first face31is oriented. The second portion22M, the third portion23M, and the fourth portion24M each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22M, the third portion23M, and the fourth portion24M, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22L, the third portion23L, and the fourth portion24L, on the side of the fourth face34in the x-direction.

The lead2N is spaced apart from the plurality of leads1. The lead2N is located on the conductive section5. The lead2N is electrically connected to the conductive section5. The lead2N exemplifies a second lead in the present disclosure. The lead2N is bonded to the second portion52N of the wiring50N in the conductive section5, via the conductive bonding material82.

The configuration of the lead2N is not specifically limited. In this embodiment the lead2N includes, as shown inFIG. 45, a first portion21N, a second portion22N, a third portion23N, and a fourth portion24N, each of which will be described hereunder.

The first portion21N is bonded to the second portion52N of the wiring50N. The shape of the first portion21N is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21N has a strip shape extending along the y-direction. The first portion21N overlaps with the fifth face35of the substrate3as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21N overlaps with the second portion52N, as viewed in the z-direction. In addition, the first portion21N includes a through hole211N. The through hole211N is formed so as to penetrate through the first portion21N, in the z-direction. The inside of the through hole211N is filled with the conductive bonding material82, as illustrated inFIG. 45with regard to the lead2N. The conductive bonding material82covers a part of the surface of the lead2N. However, the conductive bonding material82may be provided only inside the through hole211N, so as not to reach the surface of the lead2N.

The third portion23N and the fourth portion24N are covered with the encapsulating resin7. The third portion23N is connected to the first portion21N and the fourth portion24N. The fourth portion24N is shifted in the z-direction with respect to the first portion21N, to the side to which the first face31is oriented, as illustrated inFIG. 40with regard to the lead2I. The end portion of the fourth portion24N is flush with the fifth face75of the resin7. In the illustrated example, the third portion23N and the fourth portion24N generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23N or fourth portion24N in the x-direction).

The second portion22N is connected to the end portion of the fourth portion24N, and corresponds to a portion of the lead2N sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22N sticks out to the opposite side of the first portion21N, in the y-direction. The second portion22N is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22N is bent in the z-direction, to the side to which the first face31is oriented. The second portion22N, the third portion23N, and the fourth portion24N each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22N, the third portion23N, and the fourth portion24N, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22M, the third portion23M, and the fourth portion24M, on the side of the fourth face34in the x-direction.

The lead2O is spaced apart from the plurality of leads1. The lead2O is located on the conductive section5. The lead2O is electrically connected to the conductive section5. The lead2O exemplifies a second lead in the present disclosure. The lead2O is bonded to the second portion52O of the wiring50O in the conductive section5, via the conductive bonding material82.

The configuration of the lead2O is not specifically limited. In this embodiment the lead2O includes, as shown inFIG. 45, a first portion21O, a second portion22O, a third portion23O, and a fourth portion24O, each of which will be described hereunder.

The first portion21O is bonded to the second portion52O of the wiring50O. The shape of the first portion21O is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21O has a strip shape extending along the y-direction. The first portion21O overlaps with the fifth face35of the substrate3as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21O overlaps with the second portion52O, as viewed in the z-direction. In addition, the first portion21O includes a through hole211O. The through hole211O is formed so as to penetrate through the first portion21O, in the z-direction. The inside of the through hole211O is filled with the conductive bonding material82, as illustrated inFIG. 45with regard to the lead2O. The conductive bonding material82covers a part of the surface of the lead2O. However, the conductive bonding material82may be provided only inside the through hole211O, so as not to reach the surface of the lead2O.

The third portion23O and the fourth portion24O are covered with the encapsulating resin7. The third portion23O is connected to the first portion21O and the fourth portion24O. The fourth portion24O is shifted in the z-direction with respect to the first portion21O, to the side to which the first face31is oriented, as illustrated inFIG. 45with regard to the lead2O. The end portion of the fourth portion24O is flush with the fifth face75of the resin7. In the illustrated example, the third portion23O and the fourth portion24O generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23O or fourth portion24O in the x-direction).

The second portion22O is connected to the end portion of the fourth portion24O, and corresponds to a portion of the lead2O sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22O sticks out to the opposite side of the first portion21O, in the y-direction. The second portion22O is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22O is bent in the z-direction, to the side to which the first face31is oriented. The second portion22O, the third portion23O, and the fourth portion24O each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22O, the third portion23O, and the fourth portion24O, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22N, the third portion23N, and the fourth portion24N, on the side of the fourth face34in the x-direction.

The lead2P is spaced apart from the plurality of leads1. The lead2P is located on the conductive section5. The lead2P is electrically connected to the conductive section5. The lead2P exemplifies a second lead in the present disclosure. The lead2P is bonded to the second portion52P of the wiring50P in the conductive section5, via the conductive bonding material82.

The configuration of the lead2P is not specifically limited. In this embodiment the lead2P includes, as shown inFIG. 45, a first portion21P, a second portion22P, a third portion23P, and a fourth portion24P, each of which will be described hereunder.

The first portion21P is bonded to the second portion52P of the wiring50P. The shape of the first portion21P is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21P has a strip shape extending along the y-direction. The first portion21P overlaps with the fifth face35of the substrate3as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21P overlaps with the second portion52P, as viewed in the z-direction. In addition, the first portion21P includes a through hole211P. The through hole211P is formed so as to penetrate through the first portion21P, in the z-direction. The inside of the through hole211P is filled with the conductive bonding material82, as illustrated inFIG. 45with regard to the lead2P. The conductive bonding material82covers a part of the surface of the lead2P. However, the conductive bonding material82may be provided only inside the through hole211P, so as not to reach the surface of the lead2P.

The third portion23P and the fourth portion24P are covered with the encapsulating resin7. The third portion23P is connected to the first portion21P and the fourth portion24P. The fourth portion24P is shifted in the z-direction with respect to the first portion21P, to the side to which the first face31is oriented, as illustrated inFIG. 40with regard to the lead2I. The end portion of the fourth portion24P is flush with the fifth face75of the resin7. In the illustrated example, the third portion23P and the fourth portion24P generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23P or fourth portion24P in the x-direction).

The second portion22P is connected to the end portion of the fourth portion24P, and corresponds to a portion of the lead2P sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22P sticks out to the opposite side of the first portion21P, in the y-direction. The second portion22P is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22P is bent in the z-direction, to the side to which the first face31is oriented. The second portion22P, the third portion23P, and the fourth portion24P each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22P, the third portion23P, and the fourth portion24P, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22O, the third portion23O, and the fourth portion24O, on the side of the fourth face34in the x-direction.

The lead2Q is spaced apart from the plurality of leads1. The lead2Q is located on the conductive section5. The lead2Q is electrically connected to the conductive section5. The lead2Q exemplifies a second lead in the present disclosure. The lead2Q is bonded to the second portion52Q of the wiring50Q in the conductive section5, via the conductive bonding material82.

The configuration of the lead2Q is not specifically limited. In this embodiment the lead2Q includes, as shown inFIG. 45, a first portion21Q, a second portion22Q, a third portion23Q, and a fourth portion24Q, each of which will be described hereunder.

The first portion21Q is bonded to the second portion52Q of the wiring50Q. The shape of the first portion21Q is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21Q has a strip shape extending along the y-direction. The first portion21Q overlaps with the fifth face35of the substrate3as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21Q overlaps with the second portion52Q, as viewed in the z-direction. In addition, the first portion21Q includes a through hole211Q. The through hole211Q is formed so as to penetrate through the first portion21Q, in the z-direction. The inside of the through hole211Q is filled with the conductive bonding material82, as illustrated inFIG. 45with regard to the lead2Q. The conductive bonding material82covers a part of the surface of the lead2Q. However, the conductive bonding material82may be provided only inside the through hole211Q, so as not to reach the surface of the lead2Q.

The third portion23Q and the fourth portion24Q are covered with the encapsulating resin7. The third portion23Q is connected to the first portion21Q and the fourth portion24Q. The fourth portion24Q is shifted in the z-direction with respect to the first portion21Q, to the side to which the first face31is oriented, as illustrated inFIG. 40with regard to the lead2I. The end portion of the fourth portion24Q is flush with the fifth face75of the resin7. In the illustrated example, the third portion23Q and the fourth portion24Q generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23Q or fourth portion24Q in the x-direction).

The second portion22Q is connected to the end portion of the fourth portion24Q, and corresponds to a portion of the lead2Q sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22Q sticks out to the opposite side of the first portion21Q, in the y-direction. The second portion22Q is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22Q is bent in the z-direction, to the side to which the first face31is oriented. The second portion22Q, the third portion23Q, and the fourth portion24Q each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22Q, the third portion23Q, and the fourth portion24Q, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22P, the third portion23P, and the fourth portion24P, on the side of the fourth face34in the x-direction.

The lead2R is spaced apart from the plurality of leads1. The lead2R is located on the conductive section5. The lead2R is electrically connected to the conductive section5. The lead2R exemplifies a second lead in the present disclosure. The lead2R is bonded to the second portion52R of the wiring50R in the conductive section5, via the conductive bonding material82.

The configuration of the lead2R is not specifically limited. In this embodiment the lead2R includes, as shown inFIG. 45, a first portion21R, a second portion22R, a third portion23R, and a fourth portion24R, each of which will be described hereunder.

The first portion21R is bonded to the second portion52R of the wiring50R. The shape of the first portion21R is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21R has a strip shape extending along the y-direction. The first portion21R overlaps with the fifth face35of the substrate3as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21R overlaps with the second portion52R, as viewed in the z-direction. In addition, the first portion21R includes a through hole211R. The through hole211R is formed so as to penetrate through the first portion21R, in the z-direction. The inside of the through hole211R is filled with the conductive bonding material82, as illustrated inFIG. 45with regard to the lead2R. The conductive bonding material82covers a part of the surface of the lead2R. However, the conductive bonding material82may be provided only inside the through hole211R, so as not to reach the surface of the lead2R.

The third portion23R and the fourth portion24R are covered with the encapsulating resin7. The third portion23R is connected to the first portion21R and the fourth portion24R. The fourth portion24R is shifted in the z-direction with respect to the first portion21R, to the side to which the first face31is oriented, as illustrated inFIG. 40with regard to the lead2I. The end portion of the fourth portion24R is flush with the fifth face75of the resin7. In the illustrated example, the third portion23R and the fourth portion24R generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23R or fourth portion24R in the x-direction).

The second portion22R is connected to the end portion of the fourth portion24R, and corresponds to a portion of the lead2R sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22R sticks out to the opposite side of the first portion21R, in the y-direction. The second portion22R is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22R is bent in the z-direction, to the side to which the first face31is oriented. The second portion22R, the third portion23R, and the fourth portion24R each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22R, the third portion23R, and the fourth portion24R, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22Q, the third portion23Q, and the fourth portion24Q, on the side of the fourth face34in the x-direction.

The lead2S is spaced apart from the plurality of leads1. The lead2S is located on the conductive section5. The lead2S is electrically connected to the conductive section5. The lead2S exemplifies a second lead in the present disclosure. The lead2S is bonded to the second portion52S of the wiring50S in the conductive section5, via the conductive bonding material82.

The configuration of the lead2S is not specifically limited. In this embodiment the lead2S includes, as shown inFIG. 45, a first portion21S, a second portion22S, a third portion23S, and a fourth portion24S, each of which will be described hereunder.

The first portion21S is bonded to the second portion52S of the wiring50S. The shape of the first portion21S is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21S has a bent shape including a portion extending along the x-direction, and a portion inclined with respect to the x-direction and the y-direction. The first portion21S overlaps with the fourth face34of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the fourth face34is oriented. In the illustrated example, the first portion21S overlaps with the second portion52S, as viewed in the z-direction. In addition, the first portion21S includes a through hole211S. The through hole211S is formed so as to penetrate through the first portion21S, in the z-direction. The inside of the through hole211S is filled with the conductive bonding material82, like the through hole211I in the first portion21I of the lead2I shown inFIG. 40. The conductive bonding material82covers a part of the surface of the lead2S. However, the conductive bonding material82may be provided only inside the through hole211S, so as not to reach the surface of the lead2S.

The third portion23S and the fourth portion24S are covered with the encapsulating resin7. The third portion23S is connected to the first portion21S and the fourth portion24S. The fourth portion24S is shifted in the z-direction with respect to the first portion21S, to the side to which the first face31is oriented, like the third portion23I and the fourth portion24I of the lead2I shown inFIG. 40. The end portion of the fourth portion24S is flush with the fifth face75of the resin7. In the illustrated example, the third portion23S and the fourth portion24S generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23S or fourth portion24S in the x-direction).

The second portion22S is connected to the end portion of the fourth portion24S, and corresponds to a portion of the lead2S sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22S sticks out to the opposite side of the first portion21S, in the y-direction. The second portion22S is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22S is bent in the z-direction, to the side to which the first face31is oriented. The second portion22S, the third portion23S, and the fourth portion24S each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22S, the third portion23S, and the fourth portion24S, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22R, the third portion23R, and the fourth portion24R, on the side of the fourth face34in the x-direction.

The lead2T is spaced apart from the plurality of leads1. The lead2T is located on the conductive section5. The lead2T is electrically connected to the conductive section5. The lead2T exemplifies a second lead in the present disclosure. The lead2T is bonded to the second portion52T of the wiring50T in the conductive section5, via the conductive bonding material82.

The configuration of the lead2T is not specifically limited. In this embodiment the lead2T includes, as shown inFIG. 45, a first portion21T, a second portion22T, a third portion23T, and a fourth portion24T, each of which will be described hereunder.

The first portion21T is bonded to the second portion52T of the wiring50T. The shape of the first portion21T is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21T has a bent shape including a portion extending along the x-direction, a portion inclined with respect to the x-direction and the y-direction, and a portion extending along the y-direction. The first portion21T overlaps with the fourth face34of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the fourth face34is oriented. In the illustrated example, the first portion21T overlaps with the second portion52T, as viewed in the z-direction. In addition, the first portion21T includes a through hole211T. The through hole211T is formed so as to penetrate through the first portion21T, in the z-direction. The inside of the through hole211T is filled with the conductive bonding material82, like the through hole211I in the first portion21I of the lead2I shown inFIG. 40. The conductive bonding material82covers a part of the surface of the lead2T. However, the conductive bonding material82may be provided only inside the through hole211T, so as not to reach the surface of the lead2T.

The third portion23T and the fourth portion24T are covered with the encapsulating resin7. The third portion23T is connected to the first portion21T and the fourth portion24T. The fourth portion24T is shifted in the z-direction with respect to the first portion21T, to the side to which the first face31is oriented, like the third portion23I and the fourth portion24I of the lead2I shown inFIG. 40. The end portion of the fourth portion24T is flush with the fifth face75of the resin7. In the illustrated example, the third portion23T and the fourth portion24T generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23T or fourth portion24T in the x-direction).

The second portion22T is connected to the end portion of the fourth portion24T, and corresponds to a portion of the lead2T sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22T sticks out to the opposite side of the first portion21T, in the y-direction. The second portion22T is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22T is bent in the z-direction, to the side to which the first face31is oriented. The second portion22T, the third portion23T, and the fourth portion24T each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22T, the third portion23T, and the fourth portion24T, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22S, the third portion23S, and the fourth portion24S, on the side of the fourth face34in the x-direction.

The lead2U is spaced apart from the plurality of leads1. The lead2U is located on the conductive section5. The lead2U is electrically connected to the conductive section5. The lead2U exemplifies a second lead in the present disclosure. The lead2U is bonded to the second portion52U of the wiring50U in the conductive section5, via the conductive bonding material82.

The configuration of the lead2U is not specifically limited. In this embodiment the lead2U includes, as shown inFIG. 45, a first portion21U, a second portion22U, a third portion23U, and a fourth portion24U, each of which will be described hereunder.

The first portion21U is bonded to the second portion52U of the wiring50U. The shape of the first portion21U is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21U has a bent shape including a portion extending along the x-direction, a portion inclined with respect to the x-direction and the y-direction, and a portion extending along the y-direction. The first portion21U overlaps with the fourth face34of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the fourth face34is oriented. In the illustrated example, the first portion21U overlaps with the second portion52U, as viewed in the z-direction. In addition, the first portion21U includes a through hole211U. The through hole211U is formed so as to penetrate through the first portion21U, in the z-direction. The inside of the through hole211U is filled with the conductive bonding material82, like the through hole211I in the first portion21I of the lead2I shown inFIG. 40. The conductive bonding material82covers a part of the surface of the lead2U. However, the conductive bonding material82may be provided only inside the through hole211U, so as not to reach the surface of the lead2U.

The third portion23U and the fourth portion24U are covered with the encapsulating resin7. The third portion23U is connected to the first portion21U and the fourth portion24U. The fourth portion24U is shifted in the z-direction with respect to the first portion21U, to the side to which the first face31is oriented, like the third portion23I and the fourth portion24I of the lead2I shown inFIG. 40. The end portion of the fourth portion24U is flush with the fifth face75of the resin7. In the illustrated example, the third portion23U and the fourth portion24U generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23U or fourth portion24U in the x-direction).

The second portion22U is connected to the end portion of the fourth portion24U, and corresponds to a portion of the lead2U sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22U sticks out to the opposite side of the first portion21U, in the y-direction. The second portion22U is used, for example, to electrically connect the semiconductor device A2to an external circuit. In the illustrated example, the second portion22U is bent in the z-direction, to the side to which the first face31is oriented. The second portion22U, the third portion23U, and the fourth portion24U each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22U, the third portion23U, and the fourth portion24U, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22T, the third portion23T, and the fourth portion24T, on the side of the fourth face34in the x-direction.

As shown inFIG. 44andFIG. 45, the second portion22A and the second portion22B are aligned in the x-direction, with a clearance G21therebetween. The second portion22B and the second portion22C are aligned in the x-direction, with a clearance G22therebetween. The clearances G22is wider than the clearance G21. The second portion22C and the second portion22D are aligned in the x-direction, with a clearance G23therebetween. The clearance G23is narrower than the clearances G22, and generally the same as the clearance G21(exactly the same, or different by within ±5%). The second portion22D and the second portion22E are aligned in the x-direction, with a clearance G24therebetween. The clearance G24is wider than the clearance G23, and generally the same as the clearance G22(exactly the same, or different by within ±5%). The second portion22E and the second portion22F are aligned in the x-direction, with a clearance G25therebetween. The clearance G25is narrower than the clearances G24, and generally the same as the clearance G23(exactly the same, or different by within ±5%). The second portion22F and the second portion22G are aligned in the x-direction, with a clearance G26therebetween. The clearance G26is wider than the clearance G25, and generally the same as the clearance G24(exactly the same, or different by within ±5%). The second portion22G and the second portion22H are aligned in the x-direction, with a clearance G27therebetween. The clearance G27is narrower than the clearances G26, and generally the same as the clearance G25(exactly the same, or different by within ±5%). The second portion22H and the second portion22I are aligned in the x-direction, with a clearance G28therebetween. The clearance G28is wider than the clearances G21to G27. The second portions22I to22R are aligned in the x-direction, with clearances G29therebetween. The clearances G29are narrower than the clearances G21to G28. The difference in width of the clearances G29is within ±5% from each other. The second portion22R and the second portion22S are aligned in the x-direction, with a clearance G2atherebetween. The clearance G2ais generally the same as the clearance G28(exactly the same, or different by within ±5%). The second portion22S and the second portion22T are aligned in the x-direction, with a clearance G2btherebetween. The clearance G2bis generally the same as the clearance G29(exactly the same, or different by within ±5%). The second portion22T and the second portion22U are aligned in the x-direction, with the clearance G2btherebetween. The clearance G2bis generally the same as the clearance G29(exactly the same, or different by within ±5%).

As shown inFIG. 36, projection lengths y12of the second portions12A to12G from the sixth face76in the y-direction are generally the same (exactly the same, or different by within ±5%), in this embodiment. Projection lengths y22of the second portions22A to22H and the second portions22S to22U from the fifth face75are generally the same (exactly the same, or different by within ±5%). Projection lengths y21of the second portions22I to22R from the fifth face75are generally the same (exactly the same, or different by within ±5%). The projection length y21is longer than the projection length y22.

The semiconductor chips4A to4F, located on the plurality of leads1, each exemplify a semiconductor chip in the present disclosure. The type and the function of the semiconductor chips4A to4F are not specifically limited. In this embodiment, the semiconductor chips4A to4F are a transistor. Although six semiconductor chips4A to4F are provided in the illustrated example, the number of semiconductor chips is by no means limited.

The semiconductor chips4A to4F in the illustrated example are, for example, a transistor configured as an IGBT, like the ones in the semiconductor device A11.

In this embodiment, as shown inFIG. 39,FIG. 40,FIG. 41, andFIG. 42, three semiconductor chips4A,4B, and4C are provided on the main surface111A of the first portion11A of the lead1A. The three semiconductor chips4A,4B, and4C are spaced apart from each other in the x-direction, and overlap with each other as viewed in the x-direction. Here, the number of semiconductor chips to be mounted on the lead1A is by no means limited. The semiconductor chip4A is located in the first region Ra surrounded by the groove1112A in the main surface111A, in a plan view. The semiconductor chip4B is located in the first region Rb surrounded by the groove1112A in the main surface111A, in a plan view. The semiconductor chip4C is located in the first region Rc surrounded by the groove1112A in the main surface111A, in a plan view. In the illustrated example, the semiconductor chips4A,4B, and4C are arranged such that, as viewed in the z-direction, the respective gate electrodes GP are located on the side of the plurality of leads2, with respect to the center of the semiconductor chips4A,4B, and4C in the y-direction. In the illustrated example, in addition, the respective collector electrodes CP of the semiconductor chips4A,4B, and4C are bonded to the main surface111A, via the conductive bonding material83.

The conductive bonding material83may be any material that is capable of bonding, and electrically connecting, the collector electrode CP of the semiconductor chips4A,4B, and4C, to the main surface111A. For example, silver paste, copper paste, or solder may be employed as the conductive bonding material83. The conductive bonding material83corresponds to the second conductive bonding material in the present disclosure. In this embodiment, the conductive bonding material83extends outwardly from the outer periphery of the semiconductor chips4A,4B, and4C, in a plan view. A reason of such a configuration is that, for example, when the conductive bonding material83performs the bonding function by curing after the fused state, the conductive bonding material83is apt to be formed in contact with the edge of the groove1112A. This is because the surface tension of the fused conductive bonding material83, generated at the edge of the groove1112A when the conductive bonding material83is about to spread around, prevents the conductive bonding material83from spreading further.

In this embodiment, as shown inFIG. 39,FIG. 40,FIG. 41, andFIG. 43, the semiconductor chip4D is provided on the main surface111B of the first portion11B of the lead1B. Here, the number of semiconductor chips to be mounted on the lead1B is by no means limited. In the illustrated example, the semiconductor chip4D is arranged such that, as viewed in the z-direction, the gate electrode GP is located on the side of the plurality of leads2, with respect to the center of the semiconductor chip4D in the y-direction. In the illustrated example, in addition, the collector electrode CP of the semiconductor chip4D is bonded to the main surface111B, via the conductive bonding material83.

In this embodiment, as shown inFIG. 39,FIG. 40,FIG. 41, andFIG. 43, the semiconductor chip4E is provided on the main surface111C of the first portion11C of the lead1C. Here, the number of semiconductor chips to be mounted on the lead1C is by no means limited. In the illustrated example, the semiconductor chip4E is arranged such that, as viewed in the z-direction, the gate electrode GP is located on the side of the plurality of leads2, with respect to the center of the semiconductor chip4E in the y-direction. In the illustrated example, in addition, the collector electrode CP of the semiconductor chip4E is bonded to the main surface111C, via the conductive bonding material83.

In this embodiment, as shown inFIG. 39,FIG. 40,FIG. 41, andFIG. 43, the semiconductor chip4F is provided on the main surface111D of the first portion11D of the lead1D. Here, the number of semiconductor chips to be mounted on the lead1D is by no means limited. In the illustrated example, the semiconductor chip4F is arranged such that, as viewed in the z-direction, the gate electrode GP is located on the side of the plurality of leads2, with respect to the center of the semiconductor chip4F in the y-direction. In the illustrated example, in addition, the collector electrode CP of the semiconductor chip4F is bonded to the main surface111D, via the conductive bonding material83. In the illustrated example, as shown inFIG. 39, the semiconductor chip4C and the semiconductor chip4D overlap with the connecting portion57of the conductive section5, as viewed in the y-direction. As shown inFIG. 40, the semiconductor chip4D is located on the side of the substrate3with respect to the upper face of the fourth portion14B, in the z-direction.

The configuration of the diodes41A to41F is not specifically limited and may be, for example, similar to that of the diodes41A to41F of the semiconductor device A11.

As in the semiconductor device A11, the semiconductor chip4A is mounted in the first region Ra. The semiconductor chip4B is mounted in the first region Rb. The semiconductor chip4C is mounted in the first region Rc. The diode41A is mounted in the second region R1a. The diode4B is mounted in the second region R1b. The diode41C is mounted in the second region R1c. The semiconductor chip4D is mounted in the first region Rd. The semiconductor chip4E is mounted in the first region Re. The semiconductor chip4F is mounted in the first region Rf. The diode41D is mounted in the second region R1d. The diode41E is mounted in the second region R1e. The diode41F is mounted in the second region R1f.

As shown inFIG. 42, the diode41A is located in the second region R1aon the main surface111A of the first portion11A of the lead1A. In the illustrated example, in addition, the diode41A is bonded to the main surface111A via the conductive bonding material85. The conductive bonding material85is constituted of, for example, a material similar to that of the conductive bonding material83.

As shown inFIG. 42, the diode4B is located in the second region R1bon the main surface111A of the first portion11A of the lead1A. In the illustrated example, in addition, the diode4B is bonded to the main surface111A via the conductive bonding material85.

As shown inFIG. 42, the diode41C is located in the second region R1aon the main surface111A of the first portion11A of the lead1A. In the illustrated example, in addition, the diode41C is bonded to the main surface111A via the conductive bonding material85.

The diode41A overlaps with the semiconductor chip4A, as viewed in the y-direction. The diode41B overlaps with the semiconductor chip4B, as viewed in the y-direction. The diode41C overlaps with the semiconductor chip4C, as viewed in the y-direction. The diodes41A,41B, and41C overlap with each other, as viewed in the x-direction.

As shown inFIG. 43, the diode41D is located in the second region R1don the main surface111B of the first portion11B of the lead1B. In the illustrated example, in addition, the diode41D is bonded to the main surface111B via the conductive bonding material85.

As shown inFIG. 43, the diode41E is located in the second region R1eon the main surface111C of the first portion11C of the lead1C. In the illustrated example, in addition, the diode41E is bonded to the main surface111C via the conductive bonding material85.

As shown inFIG. 43, the diode41F is located in the second region R1fon the main surface111D of the first portion11D of the lead1D. In the illustrated example, in addition, the diode41F is bonded to the main surface111D via the conductive bonding material85.

The diode41D overlaps with the semiconductor chip4D, as viewed in the y-direction. The diode41E overlaps with the semiconductor chip4E, as viewed in the y-direction. The diode41F overlaps with the semiconductor chip4F, as viewed in the y-direction. The diodes41D,41E, and41F overlap with each other, as viewed in the x-direction.

The configuration of the control chips4G and4H is not specifically limited and may be, for example, similar to that of the control chips4G and4H of the semiconductor device A1.

In this embodiment, the control chip4G is mounted on the first base portion55of the conductive section5. The control chip4H is mounted on the second base portion56of the conductive section5. In this embodiment, the control chip4G is bonded to the first base portion55, via the conductive bonding material84. The control chip4H is bonded to the second base portion56, via the conductive bonding material84.

The conductive bonding material84may be any material that is capable of bonding, and electrically connecting, the control chip4G to the first base portion55, and the control chip4H to the second base portion56. For example, silver paste, copper paste, or solder may be employed as the conductive bonding material84. The conductive bonding material84corresponds to the third conductive material in the present disclosure. In this embodiment, the conductive bonding material84extends outwardly from the outer periphery of the control chips4G and4H, in a plan view. A reason of such a configuration is that, for example, when the conductive bonding material84performs the bonding function by curing after the fused state, the conductive bonding material84in the fused state spreads around the control chip4G (control chip4H) as viewed in the z-direction. Therefore, in the illustrated example, the conductive bonding material84protrudes from the respective outer edges of the control chips4G and4H, as viewed in the z-direction. However, the specific shape of the conductive bonding material84is by no means limited. Here, the control chips4G and4H may be bonded to the first base portion55via an insulative bonding material, instead of the conductive bonding material84. In the illustrated example, the conductive bonding material84has an uneven outer edge, as viewed in the z-direction. Such formation of the conductive bonding material84allows the control chips4G and4H to be bonded to a region of the conductive section5more distant from the control chips4G and4H, thereby further stabilizing the adhesion of the control chips4G and4H.

As shown inFIG. 44, the control chip4G is located between the leads2B to2O and the leads1A to1G, as viewed in the x-direction. The control chip4H is located between the leads2B to2O and the leads1A to1G, as viewed in the x-direction. The control chips4G and the control chips4H overlap with each other, as viewed in the x-direction. The control chip4G overlaps with the semiconductor chips4B and4C, as viewed in the y-direction. As shown inFIG. 45, the control chip4H overlaps with the semiconductor chips4D and4E, as viewed in the y-direction. The control chip4H overlaps with the transmission circuit chip4I and the primary-side circuit chip4J, as viewed in the y-direction. The control chip4G may overlap with the semiconductor chip4A, as viewed in the y-direction. The control chip4H may overlap with the semiconductor chip4F, as viewed in the y-direction.

As shown inFIG. 44, in the illustrated example, the control chip4G overlaps with the wiring50C (first portion51C), the wiring50D (first portion51D), the wiring50E (first portion51E), and the wiring50F (first portion51F), as viewed in the y-direction. In addition, the control chip4G overlaps with the second base portion56and the control chip4H, as viewed in the x-direction. As shown inFIG. 45, the control chip4H overlaps with the wirings50I to50P (first portions51I to51P), as viewed in the y-direction.

The control chip4G is located on the side of the substrate3, with respect to the upper end of the fourth portion24C in the z-direction. Further, the control chip4G is located on the side of the substrate3, in other words on the lower side, with respect to the upper end of the first portion21C in the z-direction. The control chip4H is located on the side of the substrate3, with respect to the upper end of the fourth portion24C in the z-direction. Further, the control chip4H is located on the side of the substrate3, in other words on the lower side, with respect to the upper face of the first portion21C in the z-direction.

As shown inFIG. 44, a portion of the first base portion55extending from the control chip4G toward the lead2in the y-direction is longer than a portion of the first base portion55extending from the control chip4G toward the lead1A in the y-direction. As shown inFIG. 45, a portion of the second base portion56extending from the control chip4H toward the lead2in the y-direction is longer than a portion of the second base portion56extending from the control chip4H toward the lead1C in the y-direction.

The transmission circuit chip4I includes the first transmission circuit in the present disclosure. The transmission circuit chip4I has a transformer structure including at least two coils opposed to each other with a gap therebetween, to transmit electrical signals. In this embodiment, as shown inFIG. 40andFIG. 45, the transmission circuit chip4I is, for example, mounted on the third base portion58via the conductive bonding material84. As shown inFIG. 45, the transmission circuit chip4I is located between the control chip4H and the primary-side circuit chip4J, as viewed in the x-direction. The transmission circuit chip4I overlaps with the control chip4H, as viewed in the y-direction. Further, the transmission circuit chip4I overlaps with the first portions51I to51O (wirings50I to50O), as viewed in the y-direction. In the illustrated example, the conductive bonding material84protrudes from the outer edge of the transmission circuit chip4I, as viewed in the z-direction.

Referring toFIG. 51toFIG. 57, an example of the configuration of the transmission circuit chip4I will be described. Here, although the transmission circuit chip4I according to this embodiment includes six transformers, the description will be given on the assumption that four transformers are provided, for the sake of simplicity. The four transformer correspond, for example, to transformers691to694(seeFIG. 49).

FIG. 51schematically illustrates the connection arrangement among the primary-side circuit chip4J, the transmission circuit chip4I, and the control chip4H. InFIG. 51, the number of fourth wires94connecting the primary-side circuit chip4J and the transmission circuit chip4I, and the number of third wires93connecting the transmission circuit chip4I and the control chip4H, are reduced to two each, for the sake of clarity.

The transmission circuit chip4I includes a lower coil721, an upper coil722, a semiconductor substrate723, an insulation multilayer structure724, a plurality of high-voltage pads733, an inner coil end wiring735, an outer coil end wiring736, a via737, an inner coil end wiring747, an outer coil end wiring748, a plurality of low-voltage pads749, a low-voltage a wiring750, a low-voltage wiring751, shield layers772to775, a cover film778, a passivation film779, a coil cover film780, and a capacitor783.

The lower coil721is a primary-side low-voltage coil. The upper coil722is a secondary-side high-voltage coil. The lower coil721and the upper coil722are opposed to each other in the z-direction (in the up-down direction), with a gap therebetween. The lower coil721and the upper coil722are each formed of a helical conductor wire. To the inner coil end (inner end of the helix) and the outer coil end (outer end of the helix) of the lower coil721, the primary-side circuit chip4J is electrically connected. To the inner coil end (inner end of the helix) and the outer coil end (outer end of the helix) of the upper coil722, the control chip4H is electrically connected.

In the transmission circuit chip4I, a periodical pulse voltage is generated in the lower coil721, for example by pulse generators665U and665L (seeFIG. 49). In the transmission circuit chip4I, only AC signals, based on the pulse voltage generated in the lower coil721, are selectively transmitted to the upper coil722by electromagnetic induction, while DC signals are blocked between the lower coil721and the upper coil722. The AC signals thus transmitted are boosted according to a transformation ratio between the lower coil721and the upper coil722, and transmitted to the control chip4H through the plurality of third wires93.

Referring toFIG. 55, the semiconductor substrate723may be a silicon (Si) substrate, or a silicon carbide (SiC) substrate. The insulation multilayer structure724is formed on the semiconductor substrate723.

The insulation multilayer structure724is composed of a plurality of insulation layers725. The plurality of insulation layers725are sequentially stacked on the surface of the semiconductor substrate723, and twelve layers are formed in the example shown inFIG. 55. The plurality of insulation layers725each include an etch stopper film726on the lower side, and an interlayer dielectric film727on the upper side, except the lowermost insulation layer725in contact with the surface of the semiconductor substrate723. The lowermost insulation layer725only includes the interlayer dielectric film727. The etch stopper film726may be formed of, for example, a silicon nitride (SiN) film, a silicon carbide (SiC) film, or a nitrogen-added silicon carbide (SiCN) film, and the interlayer dielectric film727may be formed of, for example, a silicon dioxide (SiO2) film.

The lower coil721and the upper coil722are respectively formed in different insulation layers725in the insulation multilayer structure724, and opposed to each other across one or more insulation layers725. In this embodiment, the lower coil721is formed in the fourth insulation layer725from the semiconductor substrate723, and the upper coil722is formed in the eleventh insulation layer725, with six insulation layers725interposed between the upper coil722and the lower coil721.

The shape of the lower coil721and the upper coil722is not specifically limited and may be, for example, an elliptical shape as viewed in the z-direction, as shown inFIG. 52toFIG. 54. The lower coil721and the upper coil722are internally provided with inner regions728and729, respectively.

FIG. 56illustrates an essential part of the upper coil722. In a region surrounding the inner region729, a coil groove730is formed in the insulation layer725. The coil groove730is used to form the upper coil722therein. The coil groove730is formed so as to penetrate through the interlayer dielectric film727, and the etch stopper film726located thereunder, which are formed, for example, in an elliptical helical shape. Accordingly, the upper and lower ends of the coil groove730respectively reach the etch stopper film726of the insulation layer725on the upper side and the interlayer dielectric film727of the insulation layer725on the lower side.

In the illustrated example, the upper coil722includes a barrier metal731and a copper wiring material732. The barrier metal731is formed on the inner face (side face and bottom face) of the coil groove730. The barrier metal731is formed in a film shape according to the side face and the bottom face, with an opening oriented upward. In this embodiment, the barrier metal731includes, for example, a tantalum (Ta) film, a tantalum nitride (TaN) film, and a tantalum film formed in this order from the side of the inner face of the coil groove730. The copper wiring material732is formed by filling the inside of the barrier metal731, for example with copper (Cu).

The upper coil722is formed such that the upper face becomes flush with the upper face of the insulation layer725. Accordingly, the upper coil722is in contact with different ones of the insulation layers725, via the side face, the upper face, and the lower face. More specifically, in the insulation layer725in which the upper coil722is buried, the etch stopper film726and the interlayer dielectric film727is in contact with the upper coil722, and only the etch stopper film726on the lower side, in another insulation layer725formed on the first mentioned insulation layer725, is in contact with the upper coil722. As to the insulation layer725formed under the upper coil722, only the interlayer dielectric film727on the upper side is in contact with the upper coil722.

Here, although detailed description is omitted, the lower coil721is also formed by filling the coil groove with the barrier metal and the copper (Cu) wiring material, like the upper coil722.

As shown inFIG. 52,FIG. 55, andFIG. 56, the plurality of high-voltage pads733are formed on the surface of the insulation multilayer structure724(interlayer dielectric film727of the uppermost insulation layer725), and the third wire93is connected to the high-voltage pads733. The high-voltage pad733is located in the central high-voltage region (HV region)734where the upper coil722is provided, as viewed in the z-direction.

The high-voltage region734includes a region where a wiring of the same potential as the upper coil722and the lower coil721is formed, and the periphery of the mentioned region, in the insulation layer725in which the upper coil722is buried. In this embodiment, as shown inFIG. 54, four upper coils722are aligned along the longitudinal direction of the transmission circuit chip4I, so as to form two pairs with a spacing between the pairs.

The inner coil end wiring735and the outer coil end wiring736are respectively formed in the inner region729of each of the upper coils722, and between the upper coils722adjacent to each other, in each pair. In each pair, one upper coil722and the other upper coil722are electrically connected to each other via the common outer coil end wiring736, and both of the upper coils722, the outer coil end wiring736interposed therebetween, and the inner coil end wiring735in each of the upper coils722, all have the same potential. In the relevant insulation layer725, the inner region729of each of the upper coils722, and the region between the upper coils722in each pair, are included in the high-voltage region734, because these regions are within the range covered with the electric field from the upper coil722, the inner coil end wiring735, or the outer coil end wiring736. Here, although the region where the lower coil721(low-voltage coil) is located coincides with the high-voltage region734, as viewed in the z-direction, this region is isolated from the upper coil722by the plurality of insulation layers725. Therefore, this region is not included in the high-voltage region734referred to this embodiment, because the mentioned region is barely affected by the electric field from the upper coil722.

As shown inFIG. 52, the high-voltage pad733is located on the upper side of the inner region729of each of the upper coils722, and on the upper side of the region between the upper coils722in each pair, in other words totally six high-voltage pads733are provided.

As shown inFIG. 55andFIG. 56for example, the via737is connecting a high-voltage pad733to the inner coil end wiring735buried in the same insulation layer725in which the upper coil722is buried. Though not illustrated, another high-voltage pad733is likewise connected, by means of the via, to the outer coil end wiring736buried in the same insulation layer725in which the upper coil722is buried. With such an arrangement, the AC signal transmitted to the upper coil722can be outputted from the high-voltage pad733, through the inner coil end wiring735and the via737, as well as through the outer coil end wiring736and another via (not shown).

The inner coil end wiring735and the via737are, like the upper coil722, respectively formed by filling the wiring trenches738and739with the barrier metals740and741and the copper (Cu) wiring materials742and743, as shown inFIG. 56(the same applies to the outer coil end wiring736and the via connected thereto). The barrier metals740and741may be formed of the same material as the barrier metal731.

The low-voltage region744includes regions of the insulation layer725in which the lower coil721is buried, such as a region formed with the lower coil721, a region formed with a wiring of the same potential as that of the lower coil721, and peripheral regions of the former two regions. The low-voltage region744is opposed to the high-voltage region734across one or more insulation layers725, like the positional relation between the lower coil721and the upper coil722. In this embodiment, two pairs, namely four lower coils721are aligned in the x-direction so as to oppose the upper coil722, with a spacing between the pairs, as shown inFIG. 53.

The inner coil end wiring747and the outer coil end wiring748are respectively formed in the inner region728of each of the lower coils721, and between the lower coils721adjacent to each other, in each pair. In each pair, accordingly, one lower coil721and the other lower coil721are electrically connected to each other via the common outer coil end wiring748, and both of the lower coils721, the outer coil end wiring748interposed therebetween, and the inner coil end wiring747in each of the lower coils721, all have the same potential. Therefore, in the relevant insulation layer725, the inner region728of each of the lower coils721, and the region between the lower coils721in each pair, are included in the low-voltage region744, because these regions are within the range covered with the electric field from the lower coil721, the inner coil end wiring747, or the outer coil end wiring748. Here, the inner coil end wiring747is located at a position shifted from the inner coil end wiring735of the high-voltage position in a plan view, as shown inFIG. 54.

The outer low-voltage region745is provided so as to surround the high-voltage region734and the low-voltage region744, and the intermediate region746is provided between the high-voltage region734and the outer low-voltage region745, and between the low-voltage region744and the outer low-voltage region745, as shown inFIG. 55.

As shown inFIG. 52,FIG. 55, andFIG. 56, the low-voltage pad749is formed on the surface of the insulation multilayer structure724(interlayer dielectric film727of the uppermost insulation layer725), in the outer low-voltage region745, and the fourth wire94is connected to the low-voltage pad749. In this embodiment, the low-voltage pad749is located on the lateral side of each of the six high-voltage pads733, aligned with a spacing in the x-direction, in other words totally six low-voltage pads749are provided. The low-voltage pads749are each connected to the lower coil721, via the low-voltage wirings750and751routed in the insulation multilayer structure724.

The low-voltage wiring750includes a through wiring752and a lead-out wiring753. The through wiring752is formed in the outer low-voltage region745, in a column shape extending from the low-voltage pad749, so as to penetrate at least the insulation layer725in which the lower coil721is formed, and reach the insulation layer725on the lower side of the lower coil721. More specifically, the through wiring752includes low-voltage layer wirings754and755, and a plurality of vias756,757, and758.

Each of the low-voltage layer wirings754and755is an island-shaped portion (rectangular shape) buried in the same insulation layer725in which the upper coil722and the lower coil721are buried. The plurality of vias756each serve to connect between the low-voltage layer wirings754and755. The via757is for connecting the low-voltage layer wiring754on the upper side and the low-voltage pad749. The via758is for connecting the low-voltage layer wiring755on the lower side and the lead-out wiring753.

The lead-out wiring753is formed in a linear shape, drawn out from the low-voltage region744to the outer low-voltage region745through the insulation layer725on the lower side of the lower coil721. More specifically, the lead-out wiring753includes the inner coil end wiring747, a linear lead-out layer wiring759buried in the insulation layer725on the lower side of the lower coil721so as to cross the insulation layer725under the lower coil721, and a via760connecting between the lead-out layer wiring759and the inner coil end wiring747. The lead-out layer wiring759is connected to the semiconductor substrate723, through the via761. Thus, the low-voltage wiring750is fixed to the substrate voltage (e.g., ground voltage).

Here, the wirings747,754,755, and759, and the vias756to758and760are each formed by filling the wiring trenches with the copper (Cu) wiring material, like the upper coil722. As shown inFIG. 56for example, the low-voltage layer wiring754and the vias756and757are each formed by filling the wiring trenches762to764with the barrier metals765to767and the copper (Cu) wiring materials768to770. The barrier metals765to767may be formed of the same material as the barrier metal731.

Though details are omitted, the low-voltage wiring755also includes a through wiring (not shown) and a lead-out wiring771(FIG. 52toFIG. 54), like the low-voltage layer wiring754.

One of the low-voltage pads749is connected to the inner coil end wiring747of the lower coil721, through the through wiring752and the lead-out wiring753, as shown inFIG. 52toFIG. 55. Another low-voltage pad749is connected to the outer coil end wiring748of the lower coil721, through the through wiring and the lead-out wiring771, as shown inFIG. 52toFIG. 54. Therefore, the signal inputted to the low-voltage pad749can be transmitted to the lower coil721, through the through wiring752and the lead-out wiring753.

The shield layer772is formed on a further outer side of the low-voltage layer wiring754, in the insulation multilayer structure724. The shield layer772prevents intrusion of moisture from outside into the device, and spreading of a crack on an end face into an inner region.

The shield layer772is, as shown inFIG. 52toFIG. 55, formed in a wall shape along the end face of the transmission circuit chip4I, and connected to the semiconductor substrate723via the bottom portion. Accordingly, the shield layer772is fixed to the substrate voltage (e.g., ground voltage). More specifically, the shield layer772includes shield layer wirings773to775and a plurality of vias777, as shown inFIG. 55. The shield layer wirings773to775are buried in the same insulation layer725in which the upper coil722, the lower coil721, and the lead-out layer wiring759are buried. One of the vias777is connecting the shield layer wirings773to775to each other. Another via777is connecting the lowermost shield layer wiring775and the semiconductor substrate723. The shield layer wirings773to775and the vias776and777are each formed by filling the wiring trenches with the barrier metal and the copper (Cu) wiring material, like the upper coil722.

The cover film778and the passivation film779are stacked in this order, over the entirety of the insulation multilayer structure724. The coil cover film780is formed in an elliptical ring shape, so as to selectively cover a region right above the upper coil722, on the passivation film779. The cover film778, the passivation film779, and the coil cover film780include pad openings781and782, to expose the low-voltage pad749and the high-voltage pad733, respectively.

The cover film778is formed of silicon dioxide (SiO2) for example, and has a thickness of approximately 150 nm. The passivation film779is formed of silicon nitride (SiN) for example, and has a thickness of approximately 1000 nm. The coil cover film780is formed of polyimide for example, and has a thickness of approximately 4000 nm.

A large potential difference (e.g., approximately 1200V) is generated between the lower coil721and the upper coil722, constituting a transformer690(FIG. 49) to be subsequently described. Accordingly, the insulation layer725provided between the lower coil721and the upper coil722has to have a thickness that can secure a sufficient withstand voltage to prevent insulation breakdown due to the potential difference.

In this embodiment, therefore, a plurality of insulation layers725(e.g., six layers), each including the etch stopper film726of approximately 300 nm and the interlayer dielectric film727of approximately 2100 nm, are interposed between the coils as shown inFIG. 55, so that the insulation layer725attains a total thickness L2of 12.0 μm to 16.8 μm, thus securing DC insulation in the vertical direction between the lower coil721and the upper coil722.

However, the experiment carried out by the present inventors, with regard to the relation between the thickness of an interlayer film in a semiconductor device having a transformer and a surge breakdown voltage, has provided a result shown inFIG. 57. InFIG. 57, the interlayer film refers to a film having a similar structure to that of the insulation layer725according to this embodiment. FromFIG. 57, it is understood that, although the DC insulation in the vertical direction is sufficiently achieved, by increasing the number of layers of the interlayer film between the coils, thus increasing the total film thickness, breakdown in the transverse direction, for example between the upper coil722and the low-voltage pad749(between coil and pad), and between the upper coil722and the shield layer772(between coil and shield), predominantly takes place.

Normally, a distance L0between the upper coil722and the outer low-voltage region745(in this embodiment, width of the intermediate region746) shown inFIG. 53is larger than the total thickness L2of the insulation layer725between the lower coil721and the upper coil722shown inFIG. 55. For example, the distance L0is normally 100 μm to 450 μm, which corresponds to a ratio of 6/1 to 40/1 to the thickness L2(distance L0/thickness L2). Accordingly, for example, even though a potential difference, equivalent to a difference between the lower coil721and the upper coil722(between the high-voltage region734and the low-voltage region744), is generated between the high-voltage region734and the outer low-voltage region745, the insulation breakdown is not incurred theoretically, since the distance L0is larger than the thickness L2, when only the distance between these regions is taken into account. However, as proven byFIG. 57, the breakdown in the transverse direction predominantly takes place, when the thickness of the interlayer film between the coils is increased. Here, although the thickness L2is apparently larger than the distance L0inFIG. 55, actually the distance L0is much larger than the thickness L2.

In this relation, the present inventors have discovered that providing a shield, formed of an electrically floating metal material, between the high-voltage region734and the outer low-voltage region745mitigates concentration of an electric field to a specific portion of the outer low-voltage region745, to thereby prevent the breakdown in the transverse direction.

In this embodiment, therefore, a capacitor783is provided in the intermediate region746, so as to surround the high-voltage region734in a plan view, as shown inFIG. 52andFIG. 54. Although the plurality of high-voltage regions734are surrounded by the same capacitor783inFIG. 52andFIG. 53, each of the high-voltage regions734may be individually surrounded.

The cross-sectional structure of the capacitor783is shown inFIG. 55andFIG. 56. The capacitor783is buried in the insulation layer725in which the upper coil722is buried, the insulation layer725in which the lower coil721is buried, and each of the insulation layers725provided therebetween, and formed in a wall shape as a whole, so as to surround the region in the insulation layer725where the coils are formed.

The capacitor783includes a plurality of electrode plates784buried in each of the insulation layers725. At least three (five inFIG. 55andFIG. 56) electrode plates784are provided at regular intervals, each of which is electrically floating. In addition, the electrode plates784buried in the respective insulation layers725are serially aligned in the up-down direction. In other words, in terms of the cross-section of the insulation multilayer structure724, the electrode plate784constituting a given capacitor783is superposed on the adjacent electrode plate784on the upper and lower sides. Accordingly, the plurality of electrode plates784, respectively buried in different insulation layers725, form a shield plate without a gap, along the stacking direction of the insulation multilayer structure724.

The electrode plates784are each formed by filling the wiring trench785with the barrier metal786and the copper (Cu) wiring material787as shown inFIG. 56, like the upper coil722. The barrier metal786may be formed of a similar material to that of the barrier metal731.

Further, a distance L1in the transverse direction between the upper coil722and the capacitor783shown inFIG. 55is larger than the total thickness L2of the insulation layers725between the upper coil722and the lower coil721. The distance L1is, for example, 25 μm to 400 μm. Here, although the thickness L2is apparently larger than the distance L1inFIG. 33, actually the distance L1is much larger than the thickness L2.

The capacitor783serves to mitigate concentration of an electric field to the low-potential conductive section (e.g., low-voltage pad749, low-voltage layer wiring754, via756, low-voltage layer wiring755, and shield layer772) located in the outer low-voltage region745, when a high voltage is applied between the upper coil722and the lower coil721. In particular, in the case of the low-voltage pad749and the low-voltage layer wiring754having a rectangular shape, located in the same layer as the upper coil722(high-voltage coil) and neighboring layers, the electric field is prone to concentrate on a corner portion, thus causing surge breakdown. However, the presence of the capacitor783effectively suppresses such surge breakdown. In this embodiment, in addition, since the capacitor783is surrounding the high-voltage region734, the electric field emitted from the upper coil722is mitigated, regardless of the direction. Consequently, the withstand voltage between the high-voltage region734and the outer low-voltage region745can be improved.

Further, since the electrode plates784constituting the capacitor783are buried in the same insulation layer725in which the elements of the shield layer772are buried, the capacitor783and the shield layer772can be fabricated at a time, through the same process.

The primary-side circuit chip4J transmits command signals to the control chip4H, through the transmission circuit chip4I. In this embodiment, as shown inFIG. 40andFIG. 45, the primary-side circuit chip4J is, for example, mounted on the third base portion58via the conductive bonding material84. The primary-side circuit chip4J is located on the side of the fifth face35in the y-direction, with respect to the transmission circuit chip4I. As shown inFIG. 45, the primary-side circuit chip4J overlaps with the first portion51Q (wiring50Q), as viewed in the x-direction. The primary-side circuit chip4J overlaps with the control chip4H and the transmission circuit chip4I, as viewed in the y-direction. Further, the transmission circuit chip4I overlaps with the first portions51I to51I (wirings50I to50O), as viewed in the y-direction.

As shown inFIG. 40, the control chip4H, the transmission circuit chip4I, and the primary-side circuit chip4J are located on the side of the substrate3, in other words on the lower side, with respect to the upper end of the fourth portion24I in the z-direction. Further, the control chip4H, the transmission circuit chip4I, and the primary-side circuit chip4J are located on the side of the substrate3, in other words on the lower side, with respect to the upper end of the first portion21I in the z-direction. Such positional relation also applies to the control chip4G.

The configuration of the diodes49U,49V, and49W is not specifically limited and may be, for example, similar to that of the diodes49U,49V, and49W of the semiconductor device A1.

Regarding the first wires91A to91F according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the first wires91A to91F according to the first embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment.

The first wires91A to91F are each connected to one of the semiconductor chips4A to4F and one of the plurality of leads1. The material of the first wires91A to91F is not specifically limited and, for example, aluminum (Al) or copper (Cu) may be employed. The wire diameter of the first wires91A to91F is not specifically limited and, for example, may be approximately 250 to 500 μm. The first wires91A to91F correspond to the first conductive material in the present disclosure. Here, for example leads formed of copper may be employed, in place of the first wires91A to91F.

The collector electrode CP of the semiconductor chip4A and the cathode electrode of the diode41A are connected to each other, via the first portion11A and the conductive bonding material83. The collector electrode CP of the semiconductor chip4B and the cathode electrode of the diode41B are connected to each other, via the first portion11A and the conductive bonding material83. The collector electrode CP of the semiconductor chip C and the cathode electrode of the diode41C are connected to each other, via the first portion11A and the conductive bonding material83.

In this embodiment, as shown inFIG. 42, the first wire91A includes a first portion911A and a second portion912A, each of which will be described hereunder. An end of the first portion911A is connected to the emitter electrode EP of the semiconductor chip4A, and the other end is connected to the anode electrode of the diode41A. In the illustrated example, the first portion911A extends along the y-direction. An end of the second portion912A is connected to the anode electrode of the diode41A, and the other end is connected to the fourth portion14B of the lead1B. In the illustrated example, the second portion912A is inclined with respect to the x-direction and the y-direction. The number of first wires91A is not specifically limited. In the illustrated example, three first wires91A are provided.

In this embodiment, the first wire91B includes a first portion911B and a second portion912B, each of which will be described hereunder. An end of the first portion911B is connected to the emitter electrode EP of the semiconductor chip4B, and the other end is connected to the anode electrode of the diode41B. In the illustrated example, the first portion911B extends along the y-direction. An end of the second portion912B is connected to the anode electrode of the diode41B, and the other end is connected to the fourth portion14C of the lead1C. In the illustrated example, the second portion912B is inclined with respect to the x-direction and the y-direction. The number of first wires91B is not specifically limited. In the illustrated example, three first wires91B are provided.

In this embodiment, the first wire91C includes a first portion911C and a second portion912C, each of which will be described hereunder. An end of the first portion911C is connected to the emitter electrode EP of the semiconductor chip4C, and the other end is connected to the anode electrode of the diode41C. In the illustrated example, the first portion911C extends along the y-direction. An end of the second portion912C is connected to the anode electrode of the diode41C, and the other end is connected to the fourth portion14D of the lead1D. In the illustrated example, the second portion912C is inclined with respect to the x-direction and the y-direction. The number of first wires91C is not specifically limited. In the illustrated example, three first wires91C are provided.

The collector electrode CP of the semiconductor chip4D and the cathode electrode of the diode41D are connected to each other, via the first portion11B and the conductive bonding material83. The collector electrode CP of the semiconductor chip4E and the cathode electrode of the diode41E are connected to each other, via the first portion11C and the conductive bonding material83. The collector electrode CP of the semiconductor chip4F and the cathode electrode of the diode41F are connected to each other, via the first portion11D and the conductive bonding material83.

In this embodiment, as shown inFIG. 42, the first wire91D includes a first portion911D and a second portion912D, each of which will be described hereunder. An end of the first portion911D is connected to the emitter electrode EP of the semiconductor chip4D, and the other end is connected to the anode electrode of the diode41D. In the illustrated example, the first portion911D extends along the y-direction. An end of the second portion912D is connected to the anode electrode of the diode41D, and the other end is connected to the fourth portion14E of the lead1E. In the illustrated example, the second portion912D is inclined with respect to the x-direction and the y-direction. The number of first wires91D is not specifically limited. In the illustrated example, three first wires91A are provided.

In this embodiment, the first wire91E includes a first portion911E and a second portion912E, each of which will be described hereunder. An end of the first portion911E is connected to the emitter electrode EP of the semiconductor chip4E, and the other end is connected to the anode electrode of the diode41E. In the illustrated example, the first portion911E extends along the y-direction. An end of the second portion912E is connected to the anode electrode of the diode41E, and the other end is connected to the fourth portion14F of the lead1F. In the illustrated example, the second portion912E is inclined with respect to the x-direction and the y-direction. The number of first wires91E is not specifically limited. In the illustrated example, three first wires91E are provided.

In this embodiment, the first wire91F includes a first portion911F and a second portion912F, each of which will be described hereunder. An end of the first portion911F is connected to the emitter electrode EP of the semiconductor chip4F, and the other end is connected to the anode electrode of the diode41F. In the illustrated example, the first portion911F extends along the y-direction. An end of the second portion912F is connected to the anode electrode of the diode41F, and the other end is connected to the fourth portion14G of the lead1G. In the illustrated example, the second portion912F is inclined with respect to the x-direction and the y-direction. The number of first wires91F is not specifically limited. In the illustrated example, three first wires91F are provided.

Regarding the second wire92according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the second wire92according to the first embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment.

The plurality of second wires92are each connected to one of the control chips4G and4H, as shown inFIG. 39,FIG. 44, andFIG. 45. The material of the second wires92is not specifically limited and, for example, gold (Au) may be employed. The wire diameter of the second wires92is not specifically limited and, in this embodiment, finer than the first wires91A to91F. The wire diameter of the second wires92is, for example, approximately 10 μm to 50 μm. The second wires92correspond to the second conductive material in the present disclosure. In the subsequent description, the second wires92connected to the control chip4G will be referred to as second wires92G, and the second wires92connected to the control chip4H will be referred to as second wires92H.

The second wire92G is connected to the gate electrode GP of the semiconductor chip4A, and the second portion52aof the wiring50a. Another second wire92G is connected to the emitter electrode EP of the semiconductor chip4A, and the second portion52b. The latter second wire92G is connected to a position on the emitter electrode EP of the semiconductor chip4A on the opposite side of the semiconductor chip48in the x-direction, with respect to the gate electrode GP.

The second wire92G is connected to the gate electrode GP of the semiconductor chip48, and to a position on the control chip4G on the side of the first portion11A, with respect to the center of the control chip4G in the y-direction. Another second wire92G is connected to the emitter electrode EP of the semiconductor chip48, and to a position on the control chip4G on the side of the first portion11A, with respect to the center of the control chip4G in the y-direction. The latter second wire92G is connected to a position on the emitter electrode EP of the semiconductor chip48closer to the semiconductor chip4C in the x-direction, with respect to the gate electrode GP.

The second wire92G is connected to the gate electrode GP of the semiconductor chip4C, and to a position on the control chip4G on the side of the first portion11A, with respect to the center of the control chip4G in the y-direction. Another second wire92G is connected to the emitter electrode EP of the semiconductor chip4C, and to a position on the control chip4G on the side of the first portion11A, with respect to the center of the control chip4G in the y-direction. The latter second wire92G is connected to a position on the emitter electrode EP of the semiconductor chip48closer to the semiconductor chip48in the x-direction, with respect to the gate electrode GP.

The second wire92H is connected to the gate electrode GP of the semiconductor chip4D, and to a position on the control chip4H on the side of the first portion11A, with respect to the center of the control chip4H in the y-direction. Another second wire92H is connected to the gate electrode GP of the semiconductor chip4E, and to a position on the control chip4H on the side of the first portion11A, with respect to the center of the control chip4H in the y-direction. Further, still another second wire92H is connected to the gate electrode GP of the semiconductor chip4F, and the second portion52F of the wiring50f.

As shown inFIG. 39,FIG. 44, andFIG. 45, the plurality of third wires93are connected to one of the control chips4G and4H. The material of the third wire93is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

As shown inFIG. 44, a third wire93is connected to the first portion51A, and a position on the control chip4G close to the center in the y-direction. Two third wires93are connected to the first portion51B, and a position on the control chip4G close to the center in the y-direction. Another third wire93is connected to the diode49U, and a position on the control chip4G on the side of the fifth face35in the y-direction. Another third wire93is connected to the first portion51C, and a position on the control chip4G close to the center in the y-direction. Two third wires93are connected to the first portion51D, and a position on the control chip4G close to the center in the y-direction. Another third wire93is connected to the diode49V, and a position on the control chip4G on the side of the fifth face35in the y-direction. Another third wire93is connected to the first portion51E, and a position on the control chip4G close to the center in the y-direction. Two third wires93is connected to the first portion51F, and a position on the control chip4G close to the center in the y-direction. Another third wire93is connected to the diode49W, and a position on the control chip4G on the side of the fifth face35in the y-direction. Another third wire93is connected to the third portion53H, and a position on the control chip4G on the side of the fifth face35in the y-direction.

As shown inFIG. 45, two third wires93are connected to the third portion573of the connecting portion57, and a position on the control chip4H on the side of the third face33in the x-direction. Another third wire93is connected to the second portion52c, and a position on the control chip4H on the side of the third face33in the x-direction. Another third wire93is connected to the second portion52d, and a position on the control chip4H on the side of the third face33in the x-direction. Another third wire93is connected to the second portion52e, and a position on the control chip4H on the side of the third face33in the x-direction. Two third wires93are each connected to a position on the first portion51H on the side of the fourth face34in the x-direction, and a position on the control chip4H on the side of the third face33in the x-direction. A plurality of third wires93are each connected to a position on the control chip4H on the side of the fifth face in the y-direction, and a position on the transmission circuit chip4I close to the center in the y-direction. The number of third wires93extending from the control chip4G toward the transmission circuit chip4I in the y-direction is larger than the number of second wires92extending from the control chip4H toward the semiconductor chips4D and4E (leads1B and1C) in the y-direction.

As shown inFIG. 39andFIG. 45, the plurality of fourth wires94are connected to the transmission circuit chip4I and the primary-side circuit chip4J. The material of the fourth wires94is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

As shown inFIG. 45, in the illustrated example, the plurality of fourth wires94are each connected to a position on the transmission circuit chip4I on the side of the fifth face in the y-direction, and a position on the primary-side circuit chip4J on the side of the sixth face36in the y-direction.

As shown inFIG. 39andFIG. 44, the plurality of fifth wires95are connected to the transmission circuit chip4I and the primary-side circuit chip4J. The material of the fifth wires95is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

As shown inFIG. 45, a fifth wire95is connected to the first portion51I, and a position on the primary-side circuit chip4J on the side of the fifth face35in the y-direction. Another fifth wire95is connected to the first portion51J, and a position on the primary-side circuit chip4J on the side of the fifth face35in the y-direction. Another fifth wire95is connected to the first portion51K, and a position on the primary-side circuit chip4J on the side of the fifth face35in the y-direction. Another fifth wire95is connected to the first portion51L, and a position on the primary-side circuit chip4J on the side of the fifth face35in the y-direction. Another fifth wire95is connected to the first portion51M, and a position on the primary-side circuit chip4J on the side of the fifth face35in the y-direction. Another fifth wire95is connected to the first portion51N, and a position on the primary-side circuit chip4J on the side of the fifth face35in the y-direction. Another fifth wire95is connected to the first portion51O, and a position on the primary-side circuit chip4J on the side of the fifth face35in the y-direction. Another fifth wire95is connected to the first portion51P, and a position on the primary-side circuit chip4J on the side of the fifth face35in the y-direction. Another fifth wire95is connected to the first portion51Q, and a position on the primary-side circuit chip4J on the side of the fifth face35in the y-direction. Two fifth wires95are connected to the third base portion58, and a position on the primary-side circuit chip4J on the side of the fourth face34in the x-direction.

As shown inFIG. 39andFIG. 44, the plurality of sixth wires96are connected to the control chip4G and the conductive section5. The material of the sixth wire96is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

As shown inFIG. 45, a sixth wire96is connected to the first portion51a, and a position on the control chip4G on the side of the sixth face36in the y-direction. Another sixth wire96is connected to the first portion51b, and a position on the control chip4G on the side of the sixth face36in the y-direction. Two sixth wires96are connected to the second portion572, and a position on the control chip4G on the side of the fourth face34in the x-direction. Another sixth wire96is connected to the first portion51c, and a position on the control chip40on the side of the fourth face34in the x-direction. Another sixth wire96is connected to the first portion51d, and a position on the control chip4G on the side of the fourth face34in the x-direction. Another sixth wire96is connected to the first portion51e, and a position on the control chip4G on the side of the fourth face34in the x-direction.

As shown inFIG. 39andFIG. 45, the plurality of seventh wires97are connected to the control chip4G and the conductive section5. The material of the seventh wires97is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

As shown inFIG. 45, a seventh wire97is connected to the first portion51f, and a position on the control chip4H on the side of the fourth face34in the x-direction. Three seventh wires97are connected to the first portion51T, and a position on the control chip4H on the side of the fourth face34in the x-direction. Another seventh wire97is connected to the first portion51S, and a position on the control chip4H on the side of the fourth face34in the x-direction.

Regarding the resin7according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the resin7according to the first embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment.

The resin7covers at least the semiconductor chips4A to4F, the control chips4G and4H, the transmission circuit chip4I, the primary-side circuit chip4J, a part of each of the plurality of leads1, and a part of each of the plurality of leads2. In this embodiment, in addition, the resin7covers the diodes41A to41F, the diodes49U,49V, and49W, the plurality of first wires91A to91F, the plurality of second wires92, the plurality of third wires93, the plurality of fourth wires94, the plurality of fifth wires95, the plurality of sixth wires96, and the plurality of seventh wires97. The material of the resin7is not specifically limited. Though not specifically limited, for example an insulative material such as an epoxy resin or silicone gel may be employed to form the resin7.

In this embodiment, the resin7includes a first face71, a second face72, a third face73, a fourth face74, a fifth face75, a sixth face76, a recess731, a recess732, a recess733, a hole741, and a hole742.

The first face71intersects with the z-direction and, in the illustrated example, is perpendicular to the z-direction. The first face71is oriented in the same direction as the first face31of the substrate3. The second face72intersects with the z-direction and, in the illustrated example, is perpendicular to the z-direction. The second face72is oriented in the opposite direction to the first face71, and in the same direction as the second face32of the substrate3.

The third face73is located between the first face71and the second face72in the z-direction, and connected to the first face71and the second face72, in the illustrated example. The third face73intersects with the x-direction, and is oriented in the same direction as the third face33of the substrate3. The fourth face74is located between the first face71and the second face72in the z-direction, and connected to the first face71and the second face72, in the illustrated example. The fourth face74intersects with the x-direction, and is oriented in the opposite direction to the third face73, and in the same direction as the fourth face34of the substrate3.

The fifth face75is located between the first face71and the second face72in the z-direction, and connected to the first face71and the second face72, in the illustrated example. The fifth face75intersects with the y-direction, and is oriented in the same direction as the fifth face35of the substrate3. The sixth face76is located between the first face71and the second face72in the z-direction, and connected to the first face71and the second face72, in the illustrated example. The sixth face76intersects with the y-direction, and is oriented in the opposite direction to the fifth face75, and in the same direction as the sixth face36.

The hole741is formed so as to penetrate through the resin7, in the z-direction. The shape of the hole741is not specifically limited and, in the illustrated example, a circular shape as viewed in the z-direction. The hole741is located between the third face33of the substrate3and the third face73, as viewed in the z-direction.

The hole742is formed so as to penetrate through the resin7, in the z-direction. The shape of the hole742is not specifically limited and, in the illustrated example, a circular shape as viewed in the z-direction. The hole742is located between the fourth face34of the substrate3and the fourth face74, as viewed in the z-direction.

As shown inFIG. 36andFIG. 39, the recess731, the recess732, and the recess733are portions receding from the fifth face75in the y-direction. The recess731is located between the second portion22B of the lead2B and the second portion22C of the lead2C, as viewed in the y-direction. The recess732is located between the second portion22D of the lead2D and the second portion22E of the lead2E, as viewed in the y-direction. The recess733is located between the second portion22F of the lead2F and the second portion22G of the lead2G, as viewed in the y-direction.

<Circuit Configuration of Semiconductor Device A2>

Hereunder, a circuit configuration of the semiconductor device A2will be described.

FIG. 49illustrates an example of a control circuit600Y for driving a switching arm40U of the semiconductor device A2. The semiconductor device A2includes a control circuit similar to the control circuit600Y, also for each of the switching arms40V and40W. The control circuit600Y of the semiconductor device A2may be modified in various manners, without limitation to the configuration shown inFIG. 49.

A voltage level applied to the U terminal (lead1B), the V terminal (lead1C), and the W terminal (lead1D) is, for example, approximately 0 V to 650 V. A voltage level applied to the NU terminal (lead1E), the NV terminal (lead1F), and the NW terminal (lead1G) is, for example, approximately 0V, and lower than the voltage level applied to the terminal (lead1B), the V terminal (lead1C), and the W terminal (lead1D). The semiconductor chips4A to4C each constitute a high-potential side transistor of a three-phase inverter circuit, and the semiconductor chips4D to4F each constitute a low-potential side transistor of the three-phase inverter circuit.

As shown inFIG. 49, the control circuit600Y includes a primary-side circuit660, a secondary-side circuit670, and a transformer690. The control circuit600Y utilizes the transformer690to insulate between the primary-side circuit660and the secondary-side circuit670, transmit signals from the primary-side circuit660to the secondary-side circuit670, and transmit signals from the secondary-side circuit670to the primary-side circuit660.

In this embodiment, the primary-side circuit660is included in the primary-side circuit chip4J. At least a part of the secondary-side circuit670is included in the control chip4H and the control chip4G. The transformer690is included in the transmission circuit chip4I.

The primary-side circuit660includes an under voltage lock out circuit661, an oscillation (CSC) circuit662, a signal transmission circuit660U connected to the HINU terminal (lead2I), a signal transmission circuit660L connected to the LINU terminal (lead2L), and a fault protection circuit660F connected to the FO terminal (lead2P).

The signal transmission circuit660U serves to supply a gate signal voltage to the gate electrode GP of the semiconductor chip4A, and includes a resistance663U, a Schmitt trigger664U, a pulse generator665U, and output buffers667UA and667UB, in this order from the HINU terminal toward the transformer690. The resistance663U and the Schmitt trigger664U correspond to the resistance461and the Schmitt trigger462of the semiconductor device A1. The output terminal of the Schmitt trigger664U is connected to the pulse generator665U. The first output terminal of the pulse generator665U is connected to the output buffer667UA, and the second output terminal of the pulse generator665U is connected to the output buffer667UB.

The signal transmission circuit660L serves to supply a gate signal voltage to the gate of the semiconductor chip4D, and includes a resistance663L, a Schmitt trigger664L, a pulse generator665L, and output buffers667LA and667LB, in this order from the LINU terminal toward the transformer690. The resistance663L and the Schmitt trigger664L correspond to the resistance471and the Schmitt trigger472of the semiconductor device A1. The output terminal of the Schmitt trigger664L is connected to the pulse generator665L. The first output terminal of the pulse generator665L is connected to the output buffer667LA, and the second output terminal of the pulse generator665L is connected to the output buffer667LB.

The fault protection circuit660F serves to output, when a fault occurs in the semiconductor device A2, information regarding the fault in the semiconductor device A2to outside of the semiconductor device A2, and includes an RS flip-flop circuit666, input buffers667FA and667FB, a driver668, and a transistor669.

The output terminal of the input buffer667FA is connected to the S terminal of the RS flip-flop circuit666, and the output terminal of the input buffer667FB is connected to the R terminal of the RS flip-flop circuit666. The Q terminal of the RS flip-flop circuit666is connected to the driver668. The output terminal of the driver668is connected to the gate of the transistor669. The source of the transistor669is grounded, and the drain of the transistor669is connected to the FO terminal.

The under voltage lock out circuit661monitors the source voltage VCC of the primary-side circuit660. The under voltage lock out circuit661is connected to the set terminal (S terminal) of the RS flip-flop circuit666. The under voltage lock out circuit661switches the lock out signal from the logic level in the normal condition (e.g., low level) to the logic level in an abnormal condition (e.g., high level), when the source voltage VCC of the primary-side circuit660falls below a predetermined threshold voltage. The oscillation circuit662outputs a clock signal to each of the pulse generators665U and665L, the RS flip-flop circuit666, and the driver668.

The secondary-side circuit670includes an oscillation circuit671, a signal transmission circuit670U, a signal transmission circuit670L, and a fault protection circuit670F.

The signal transmission circuit670U serves to supply a gate signal voltage of the signal transmission circuit660U in the primary-side circuit660to the gate of the semiconductor chip4A. The signal transmission circuit670U includes input buffers672UA and672UB, an RS flip-flop circuit673U, a pulse generator674U, a level shifter circuit675U, an RS flip-flop circuit676, and a driver677U, in this order from the transformer690to the semiconductor chip4A. The signal transmission circuit670U also includes the diode49U and a current controller49X that controls the current to the diode49U. The current controller49X may be a current limiting resistor.

The output terminal of the input buffer672UA is connected to the S terminal of the RS flip-flop circuit673U, and the output terminal of the input buffer672UB is connected to the R terminal of the RS flip-flop circuit673U. The Q terminal and the QB terminal of the RS flip-flop circuit673U is connected to the pulse generator674U. The pulse generator674U is connected to the level shifter circuit675U. The level shifter circuit675U is configured to input a signal from the Q terminal of the RS flip-flop circuit673U to the S terminal of the RS flip-flop circuit673U, and input a signal from the QB terminal of the RS flip-flop circuit673U to the R terminal of the RS flip-flop circuit673U. The Q terminal of the RS flip-flop circuit676U is connected to the driver677U. The output terminal of the driver677U is connected to the gate of the semiconductor chip4A. To the R terminal of the RS flip-flop circuit676U, the under voltage lock out circuit678is connected. The pulse generator674U, the level shifter circuit675U, the RS flip-flop circuit676U, and the driver677U respectively correspond to the pulse generator465, the level shifter466, the RS flip-flop circuit468, and the driver469of the semiconductor device A1.

The signal transmission circuit670L serves to supply a gate signal voltage of the signal transmission circuit660L of the primary-side circuit660, to the gate of the semiconductor chip4D. The signal transmission circuit670L includes input buffers672LA and672LB, an RS flip-flop circuit673L, and a driver677L, in this order from the transformer690toward the semiconductor chip4D.

The output terminal of the input buffer672LA is connected to the S terminal of the RS flip-flop circuit673L, and the output terminal of the input buffer672LB is connected to the R terminal of the RS flip-flop circuit673L. The Q terminal and the QB terminal of the RS flip-flop circuit673L are connected to the driver677L. The driver677L is connected to the gate of the semiconductor chip4D.

The fault protection circuit670F serves to output, when a fault occurs in the semiconductor device A2, information regarding the fault in the semiconductor device A2to the primary-side circuit660. The fault protection circuit670F includes output buffers672FA and672FB, a fault signal generation circuit679, a thermal shut down circuit680, an under voltage lock out circuit681, and a current limiting circuit682. To the fault protection circuit670F, the VCC terminal (lead2Q) and the CIN terminal (lead2S, detection terminal CIN) of the secondary-side circuit670are connected.

To the fault signal generation circuit679, the thermal shut down circuit680, the under voltage lock out circuit681, and the current limiting circuit682are connected. The first output terminal of the fault signal generation circuit679is connected to the output buffer671FA, and the second output terminal is connected to the output buffer671FB. To the output buffer671FB, the R terminals of the RS flip-flop circuits673U and673L are connected.

The oscillation circuit671outputs the clock signal to each of the RS flip-flop circuits673U and673L, and the fault signal generation circuit679.

The transformer690includes transformers691to696. The transformers691to696each include a primary-side coil and a secondary-side coil.

The first terminal of the primary-side coil of the transformer691is connected to the output terminal of the output buffer667UA, and the second terminal of the primary-side coil of the transformer691is grounded. The first terminal of the secondary-side coil of the transformer691is connected to the input buffer672UA, and the second terminal of the secondary-side coil of the transformer691is grounded.

The first terminal of the primary-side coil of the transformer692is connected to the output terminal of the output buffer667UB, and the second terminal of the primary-side coil of the transformer692is grounded. The first terminal of the secondary-side coil of the transformer692is connected to the input buffer672UB, and the second terminal of the secondary-side coil of the transformer692is grounded.

The first terminal of the primary-side coil of the transformer693is connected to the output terminal of the output buffer667LA, and the second terminal of the primary-side coil of the transformer693is grounded. The first terminal of the secondary-side coil of the transformer693is connected to the input buffer672LA, and the second terminal of the secondary-side coil of the transformer693is grounded.

The first terminal of the primary-side coil of the transformer694is connected to the output terminal of the output buffer667LB, and the second terminal of the primary-side coil of the transformer694is grounded. The first terminal of the secondary-side coil of the transformer694is connected to the input buffer672LB, and the second terminal of the secondary-side coil of the transformer694is grounded.

The first terminal of the primary-side coil of the transformer695is connected to the input buffer667FA, and the second terminal of the primary-side coil of the transformer695is grounded. The first terminal of the secondary-side coil of the transformer695is connected to the output terminal of the output buffer672FA, and the second terminal of the secondary-side coil of the transformer695is grounded.

The first terminal of the primary-side coil of the transformer696is connected to the input buffer667FB, and the second terminal of the primary-side coil of the transformer696is grounded. The first terminal of the secondary-side coil of the transformer696is connected to the output terminal of the output buffer672FB, and the second terminal of the secondary-side coil of the transformer696is grounded.

In this embodiment, the lead2A may be referred to as a VSU terminal. The lead2B corresponds to the VBU terminal in the semiconductor device A1. The lead2C may be referred to as a VSV terminal. The lead2D corresponds to the VBV terminal in the semiconductor device A1. The lead2B may be referred to as a VSW terminal. The lead2F corresponds to the VBW terminal in the semiconductor device A1. The lead2G corresponds to the first GND terminal in the semiconductor device A1. The lead2H corresponds to the first VCC terminal in the semiconductor device A1. The lead2I corresponds to the HINU terminal in the semiconductor device A1. The lead2J corresponds to the HINV terminal in the semiconductor device A1. The lead2K corresponds to the HINW terminal in the semiconductor device A1. The lead2L corresponds to the LINU terminal. The lead2M corresponds to the LINV terminal in the semiconductor device A1. The lead2N corresponds to the LINW terminal in the semiconductor device A1. The lead2O corresponds to the FO terminal. The lead2P corresponds to the VOT terminal. The lead2Q may be referred to as a third VCC terminal. The lead2R may be referred to as a third GND. The lead2S corresponds to the CIN terminal. The lead2T corresponds to the second VCC terminal in the semiconductor device A1. The lead2U corresponds to the second GND terminal.

As shown inFIG. 50, the semiconductor device A2is mounted, for example, on the circuit board91. On the circuit board91, a control chip92is provided. The control chip92controls the chips in the semiconductor device A2. The semiconductor device A2and the control chip92are connected to each other, via the wiring pattern formed on the circuit board91. In the illustrated example, the leads2I to2R of the semiconductor device A2and the control chip92are connected to each other.

This embodiment provides the following advantageous effects, in addition to those provided by the semiconductor device A1.

The semiconductor device A2includes the transformer690(transmission circuit chip4I). Accordingly, in case that the power circuit on the secondary-side, such as the switching arms40U,40V, and40W breaks down, the transformer690(transmission circuit chip4I) prevents the impact of the breaking down from reaching the primary-side circuit660(primary-side circuit chip4J). Therefore, a microcomputer or the like, connected from outside to the primary-side circuit660(primary-side circuit chip4J) or primary-side circuit660(primary-side circuit chip4J), can be protected.

As shown inFIG. 39, the transmission circuit chip4I is located on the opposite side of the semiconductor chips4A to4F in the y-direction, across the control chip4H. In addition, the primary-side circuit chip4J is located on the opposite side of the control chip4H in the y-direction, across the transmission circuit chip4I. Therefore, the leads2I to2R electrically connected to the primary-side circuit660(primary-side circuit chip4J) can be located more distant from the portion electrically connected to the control chip4H,4G, in the y-direction.

The leads2A to2H and the leads2S to2U, electrically connected to the secondary-side circuit670, are separately located on the respective sides of the leads2I to2R electrically connected to the primary-side circuit660(primary-side circuit chip4J), in the x-direction. Such a configuration prevents complication of the wiring paths of the conductive section5electrically connected to the leads2A to2H and the leads2S to2U, unlike the case where the leads2A to2H and the leads2S to2U are unevenly located only on either side in the x-direction.

As shown inFIG. 44andFIG. 45, the clearance G28between the second portion22H and the second portion22I is wider than the clearances G21to G27and the clearance G29. In addition, the clearance G2abetween the second portion22R and the second portion22S is wider than the clearance G29and the clearance G2b. Therefore, the primary-side circuit660and the secondary-side circuit670can be effectively insulated from each other.

As shown inFIG. 39andFIG. 44, the second portion52aof the wiring50aoverlaps with the semiconductor chip4A, as viewed in the y-direction. Therefore, the second wire92, connected to the gate electrode GP of the semiconductor chip4A and the second portion52a, can be shortened. In addition, the second portion52bof the wiring50boverlaps with the semiconductor chip4A, as viewed in the y-direction. Therefore, the second wire92, connected to the emitter electrode EP of the semiconductor chip4A and the second portion52b, can be shortened. Locating thus the second portion52band the second portion52aso as to overlap as viewed in the x-direction is desirable from the viewpoint of shortening the second wire92connected to the emitter electrode EP of the semiconductor chip4A and the second portion52b.

As shown inFIG. 36, the projection length y21of the second portions22I to22R from the fifth face75is longer than the projection length y22of the second portions22A to22H and the second portions22S to22U from the fifth face75, as viewed in the z-direction. Therefore, the leads2I to2R electrically connected to the primary-side circuit chip4J can be insulated from the leads2A to2H electrically connected to the control chip4G, and the leads2S to2U electrically connected to the control chip4H, when the semiconductor device A2is mounted on the circuit board.

As shown inFIG. 39, the control chip4G and the semiconductor chip4B overlap, as viewed in the y-direction. Such a configuration shortens the length of the second wire92G connected to the semiconductor chip4B and the control chip4G, thereby contributing to improving the integration level of the semiconductor device.

As shown inFIG. 39, the control chip4H overlaps with the semiconductor chip4E, the transmission circuit chip4I, and the primary-side circuit chip4J, as viewed in the y-direction. Such a configuration shortens the length of the wires for connection among the semiconductor chip4E, the transmission circuit chip4I, and the primary-side circuit chip4J, thereby contributing to improving the integration level of the semiconductor device.

As shown inFIG. 39, the control chips4G and4H overlap with each other, as viewed in the x-direction. Such a configuration facilitates the semiconductor chips4A to4F and the plurality of leads2to be arranged along the x-direction, thereby contributing to improving the integration level of the semiconductor device.

As shown inFIG. 39, the number of second wires92H extending from the control chip4H toward the semiconductor chips4D and4E (leads1B and1C) in the y-direction is fewer than the number of third wires93extending from the control chip4H toward the transmission circuit chip4I. When temperature changes during the manufacturing process, or during the use of the semiconductor device A2, the leads1A to1D and the substrate3incur thermal expansion. The thermal expansion of the leads1A to1D, which are made of a metal, is larger than the thermal expansion of the substrate3made of a ceramic. In this embodiment, the control chip4H and the transmission circuit chip4I are both located on the substrate3. In contrast, the semiconductor chips4D and4E are located on the lead1B and the lead1C. Accordingly, a change in positional relation between the control chip4H and the semiconductor chips4D and4E, caused by the temperature change, is larger than a change in positional relation between the control chip4H and the transmission circuit chip4I. Providing a fewer number of second wires92H, susceptible to stress from the resin7originating from the change in positional relation, than the third wires93suppresses the impact of the stress to which the second wire92H may be subjected.

Further, the second wire92H is connected, as shown inFIG. 40, to the semiconductor chip4D located on the first portion11B of the lead1B, the semiconductor chip4E located on the first portion11C of the lead1C, and the control chip4H. The third wire93is connected to the control chip4H and the transmission circuit chip4I, both located on the substrate3. Accordingly, the third wire93is shorter than the second wire92H. Conversely, the second wire92H is longer than the third wire93. Making thus the second wire92H longer than the third wire93prevents disconnection of the second wire92H, susceptible to the impact of the change in positional relation, even when the change in positional relation takes place owing to a temperature change.

As shown inFIG. 42andFIG. 43, the third face123A, the third face123B, the third face123C, and the third face123D are rougher than the second face122A, the first face121B, the second face1223, the first face121C, the second face122C, and the first face121D. With such a configuration, the third face123A, the third face123B, the third face123C, and the third face123D contributes to improving the adhesion strength between the leads1A to1D and the resin7, and also insulation can be secured between the second face122A and the first face121B, the second face122B and the first face121C, the second face122C and the first face121D, which are opposed to each other.

As shown inFIG. 44, the portion of the first base portion55extending from the control chip4G toward the lead2in the y-direction is longer than the portion of the first base portion55extending from the control chip4G toward the lead1A in the y-direction. As shown inFIG. 45, the portion of the second base portion56extending from the control chip4H toward the lead2in the y-direction is longer than the portion of the second base portion56extending from the control chip4H toward the lead1C in the y-direction. Such a configuration prevents the first base portion55and the second base portion56from accidentally making an electrical contact with the leads1A to1D.

The transmission circuit chip4I includes the first transmission circuit according to the present disclosure, and is covered with the resin7. As shown inFIG. 50, the semiconductor device A2is mounted, for example, on the circuit board91. In this case, the control chip92is located on the circuit board91, at a position outside the semiconductor device A2. When attempting to secure a physical spacing of the conduction path connecting between the control chip92and the semiconductor chips incorporated in the semiconductor device A2, at least a photocoupler can be excluded. Therefore, the size of the circuit board91can be reduced.

Third Embodiment

Referring toFIG. 58andFIG. 59, a semiconductor device according to a third embodiment of the present disclosure will be described. The semiconductor device A3according to this embodiment includes a plurality of lead1, plurality of leads2, a substrate3, a plurality of semiconductor chips4, a diode41, a plurality of control chips4, a transmission circuit chip4I, a primary-side circuit chip4J, a plurality of diodes49, a conductive section5, a plurality of bonding sections6, a plurality of first wires91, a plurality of second wires92, a plurality of third wires93, a plurality of fourth wires94, a plurality of fifth wires95, a plurality of sixth wires96, plurality of seventh wires97, and an encapsulating resin7.

The semiconductor device A3according to this embodiment includes similar elements to those of the semiconductor device A2according to the second embodiment. Such elements will be given the same numeral, and a part or the whole of the description thereof may be omitted. Regarding an element on which no specific description is given, a similar configuration to that of the corresponding element of the semiconductor device A2may be adopted, as appropriate.

FIG. 58is a plan view showing the semiconductor device A3.FIG. 59is an enlarged partial plan view of the semiconductor device A3.

The shape, size, and material of the substrate3are not specifically limited. The substrate3may be configured, for example, similarly to the substrate3of the semiconductor device A2.

Regarding the conductive section5according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the conductive section5according to the first embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment.

The conductive section5is formed on the substrate3. In this embodiment, the conductive section5is formed on the first face31of the substrate3. The conductive section5is formed of a conductive material. The conductive material to form the conductive section5is not specifically limited. Examples of the conductive material to form the conductive section5include materials containing silver (Ag), copper (Cu), or gold (Au). In the subsequent description, it will be assumed that the conductive section5contains silver. However, the conductive section5may contain copper instead of silver, or gold instead of silver or copper. Alternatively, the conductive section5may contain Ag—Pt or Ag—Pd. The forming method of the conductive section5is not limited. For example, the conductive section5may be formed by sintering a paste containing the mentioned metal. The thickness of the conductive section5is not specifically limited, but may be, for example, approximately 5 μm to 30 μm.

In this embodiment, as shown inFIG. 58andFIG. 59, the conductive section5includes wirings50A to50U, wirings50ato50f, a first base portion55, a second base portion56, a connecting portion57, and a third base portion58, each of which will be described hereunder.

The shape of the first base portion55is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first base portion55has a rectangular shape. In the illustrated example, the first base portion55has an elongate rectangular shape, having the long sides extending along the x-direction.

The shape of the second base portion56is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second base portion56has a rectangular shape. In the illustrated example, the second base portion56has an elongate rectangular shape, having the long sides extending along the x-direction.

The second base portion56is located on the side of the fourth face34with respect to the first base portion55, in the x-direction. In the illustrated example, the edge of the second base portion56on the side of the sixth face36in the y-direction is located generally at the same position as the edge of the first base portion55on the side of the sixth face36, in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located exactly at the same position, or being deviated by within ±5% of the characteristic size (size of the first base portion55or second base portion56in the y-direction).

The connecting portion57is interposed between the first base portion55and the second base portion56and, in the illustrated example, connecting the first base portion55and the second base portion56. In the illustrated example, the connecting portion57is located between the first base portion55and the second base portion56, as viewed in the y-direction. The shape of the connecting portion57is not specifically limited.

In the illustrated example, the respective edges of the first base portion55, the second base portion56, and the connecting portion57on the side of the sixth face36in the y-direction are located generally at the same position in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located exactly at the same position, or being deviated by within ±5% of the characteristic size (size of the first base portion55or second base portion56in the y-direction).

The shape of the third base portion58is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. The third base portion58is located on the side of the fifth face35in the y-direction, with respect to the second base portion56. The third base portion58overlaps with the second base portion56, as viewed in the y-direction.

The wiring50A includes a first portion51A and a second portion52A.

The first portion51A is located on the side of the third face33in the x-direction with respect to the first base portion55, and spaced therefrom. The shape of the first portion51A is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51A has an elongate strip shape extending along the x-direction. In the illustrated example, in addition, the first portion51A overlaps with the first base portion55, as viewed in the x-direction.

The second portion52A is located on the side of the fifth face35in the y-direction, and on the side of the third face33in the x-direction, with respect to the first portion51A. The shape of the second portion52A is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51A has a rectangular shape.

The wiring50A includes a strip-shaped portion connecting the first portion51A and the second portion52A. The strip-shaped portion includes a portion extending from the first portion51A along the x-direction, and a portion extending obliquely toward the second portion52A.

The wiring508includes a first portion518and a second portion528.

The shape of the first portion518is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. The first portion51B is located on the side of the third face33in the x-direction with respect to the first base portion55, and on the side of the fifth face35in the y-direction, with respect to the first portion51A, and spaced therefrom. In the illustrated example, a part of the first portion518overlaps with the first base portion55as viewed in the x-direction, and with the first portion51A, as viewed in the y-direction.

The second portion52B is located on the side of the fifth face35with respect to the first portion51B, in the y-direction. The second portion528overlaps with the second portion52A, as viewed in the y-direction. The shape of the second portion528is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52B has a rectangular shape.

The wiring50B includes a strip-shaped portion connecting the first portion513and the second portion52B. The strip-shaped portion includes a portion extending from the first portion51B along the x-direction, a portion extending obliquely, and a portion extending along the x-direction toward the second portion52B.

The wiring50C includes a first portion51C and a second portion52C.

The first portion51C is located on the side of the fifth face35in the y-direction, with respect to the first base portion55with a spacing therefrom, and on the side of the fourth face34in the x-direction, with respect to the first portion51B with a spacing therefrom. In the illustrated example, the first portion51C overlaps with the first base portion55, as viewed in the y-direction. The shape of the first portion51C is not specifically limited. In the illustrated example, the first portion51C has a strip shape extending along the y-direction.

The second portion52C is located on the side of the fifth face35with respect to the first portion51C, in the y-direction. The second portion52C overlaps with the second portion52A and the second portion52B, as viewed in the y-direction. The shape of the second portion52C is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52C has a rectangular shape.

The wiring50C includes a strip-shaped portion connecting the first portion51C and the second portion52C. The strip-shaped portion includes a portion extending from the first portion51C along the x-direction, and a portion extending obliquely toward the second portion52C.

The wiring50D includes a first portion51D and a second portion52D.

The shape of the first portion51D is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51D has a rectangular shape. The first portion51D is located on the side of the fifth face35in the y-direction, with respect to the first base portion55, and spaced therefrom. The first portion51D is located on the side of the fourth face34in the x-direction with respect to the first portion51C, and spaced therefrom. In addition, in the illustrated example, the first portion51D overlaps with the first portion51C as viewed in the x-direction, and with the first base portion55as viewed in the y-direction.

The second portion52D is located on the side of the fifth face35with respect to the first portion51D, in the y-direction. The second portion52D is located on the side of the fifth face35in the y-direction with respect to the second portion52C, and spaced therefrom. The second portion52D overlaps with the second portion52A, the second portion52B, and the second portion52C, as viewed in the y-direction. The shape of the second portion52D is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52E has a rectangular shape.

The wiring50D includes a strip-shaped portion connecting the first portion51D and the second portion52D. The strip-shaped portion includes a portion extending from the first portion51D along the x-direction, a portion extending obliquely, and a portion extending along the x-direction toward the second portion52D.

The wiring50E includes a first portion51E and a second portion52E.

The first portion51E is located on the side of the fifth face35in the y-direction, with respect to the first base portion55with a spacing therefrom, and on the side of the fourth face34in the x-direction, with respect to the first portion51D with a spacing therefrom. In the illustrated example, the first portion51E overlaps with the first base portion55, as viewed in the y-direction. The shape of the first portion51E is not specifically limited. In the illustrated example, the first portion51E has a strip shape extending along the y-direction.

The second portion52E is located on the side of the fifth face35with respect to the first portion51E, in the y-direction. The second portion52E is located on the side of the fourth face34with respect to the second portion52D, in the x-direction. The shape of the second portion52E is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52B has a rectangular shape.

The wiring50E includes a strip-shaped portion connecting the first portion51E and the second portion52E. The strip-shaped portion includes a portion extending from the first portion51E along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52E.

The wiring50F includes a first portion51F and a second portion52F.

The shape of the first portion51F is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. The first portion51F is located on the side of the fifth face35in the y-direction, with respect to the first base portion55, and spaced therefrom. The first portion51F is located on the side of the fourth face34in the x-direction with respect to the first portion51E, and spaced therefrom. In the illustrated example, the first portion51F overlaps with the first portion51E as viewed in the x-direction, and with the first base portion55as viewed in the y-direction.

The second portion52F is located on the side of the fifth face35with respect to the first portion51F, in the y-direction. The second portion52F is located on the side of the fourth face34in the x-direction with respect to the second portion52E, and spaced therefrom. The second portion52F overlaps with the second portion52E, as viewed in the x-direction. The shape of the second portion52F is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52F has a rectangular shape.

The wiring50F includes a strip-shaped portion connecting the first portion51F and the second portion52F. The strip-shaped portion includes a portion extending from the first portion51F along the y-direction, a portion extending along the x-direction, and a portion extending along the y-direction toward the second portion52F.

The wiring50G includes a second portion52G.

The second portion52G is located on the side of the fifth face35with respect to the first base portion55, in the y-direction. The second portion52G is located on the side of the fourth face34in the x-direction with respect to the second portion52F, and spaced therefrom. The second portion52G overlaps with the second portion52F, as viewed in the x-direction. The second portion52G overlaps with the first base portion55, as viewed in the y-direction. The shape of the second portion52G is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52G has a rectangular shape.

The wiring50G includes a strip-shaped portion connecting the second portion52G and the first base portion55. The strip-shaped portion includes a portion extending from the first base portion55along the y-direction, a portion extending obliquely, a portion extending along the x-direction, and a portion extending obliquely toward the second portion52G.

The wiring50H includes a first portion51H and a second portion52H.

The first portion51H is located between the first base portion55and the second base portion56, as viewed in the y-direction. In the illustrated example, a part of the first portion51H overlaps with the first base portion55and the second base portion56, as viewed in the x-direction. The shape of the first portion51H is not specifically limited. In the illustrated example, the first portion51H has a strip shape extending in the x-direction.

The second portion52H is located on the side of the fifth face35in the y-direction, and on the side of the third face33in the x-direction, with respect to the first portion51H. The second portion52H is located on the side of the fourth face34in the x-direction with respect to the second portion52G. The second portion52H overlaps with the second portion52G, as viewed in the x-direction. The shape of the second portion52H is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52H has a rectangular shape.

The wiring50H includes a strip-shaped portion connecting the first portion51H and the second portion52H. The strip-shaped portion includes a portion extending from the first portion51H along the y-direction, a portion extending obliquely, and a portion extending along the x-direction toward the second portion52H.

The wiring50I includes a first portion51I and a second portion52I.

The first portion51I is located on the side of the third face33in the x-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51I overlaps with the third base portion58, as viewed in the x-direction. The shape of the first portion51I is not specifically limited. In the illustrated example, the first portion51I has a rectangular shape.

The second portion52I is located on the side of the fifth face35with respect to the first portion51I, in the y-direction. The second portion52I is located on the side of the fourth face34in the x-direction with respect to the second portion52H, and spaced therefrom. The second portion52I is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52I overlaps with the second portion52H, as viewed in the x-direction. The shape of the second portion52I is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52I has a rectangular shape.

The wiring50I includes a strip-shaped portion connecting the first portion51I and the second portion52I. The strip-shaped portion includes a portion extending from the first portion51I along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52I.

The wiring50J includes a first portion51J and a second portion52J.

The first portion51J is located on the side of the third face33in the x-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51J overlaps with the third base portion58, as viewed in the x-direction. The first portion51J is located on the side of the fourth face34in the x-direction with respect to the first portion51I, and spaced therefrom. The first portion51J overlaps with the first portion51I, as viewed in the y-direction. The shape of the first portion51J is not specifically limited. In the illustrated example, the first portion51J has a rectangular shape.

The second portion52J is located on the side of the fifth face35with respect to the first portion51J, in the y-direction. The second portion52J is located on the side of the fourth face34in the x-direction with respect to the second portion52I, and spaced therefrom. The second portion52J overlaps with the second portion52I, as viewed in the x-direction. The shape of the second portion52J is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52J has a rectangular shape.

The wiring50J includes a strip-shaped portion connecting the first portion51J and the second portion52J. The strip-shaped portion includes a portion extending from the first portion51J along the y-direction, toward the second portion52J.

The wiring50K includes a first portion51K and a second portion52K.

The first portion51K is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51K overlaps with the third base portion58, as viewed in the y-direction. The first portion51K is located on the side of the fourth face34in the x-direction with respect to the first portion51J, and spaced therefrom. The shape of the first portion51K is not specifically limited. In the illustrated example, the first portion51K has a rectangular shape.

The second portion52K is located on the side of the fifth face35with respect to the first portion51K, in the y-direction. The second portion52K is located on the side of the fourth face34in the x-direction with respect to the second portion52J, and spaced therefrom. The second portion52K overlaps with the third base portion58, as viewed in the y-direction. The second portion52K overlaps with the second portion52J, as viewed in the x-direction. The shape of the second portion52K is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52K has a rectangular shape.

The wiring50K includes a strip-shaped portion connecting the first portion51K and the second portion52K. The strip-shaped portion includes a portion extending from the first portion51K along the y-direction, a portion extending along the x-direction, and a portion extending along the y-direction toward the second portion52K.

The wiring50L includes a first portion51L and a second portion52L.

The first portion51L is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51L overlaps with the third base portion58, as viewed in the y-direction. The first portion51L is located on the side of the fourth face34in the x-direction with respect to the first portion51K, and spaced therefrom. The first portion51L overlaps with the first portion51K, as viewed in the x-direction. The shape of the first portion51L is not specifically limited. In the illustrated example, the first portion51L has a rectangular shape.

The second portion52L is located on the side of the fifth face35with respect to the first portion51L, in the y-direction. The second portion52L is located on the side of the fourth face34in the x-direction with respect to the second portion52K, and spaced therefrom. The second portion52L overlaps with the third base portion58, as viewed in the y-direction. The second portion52L overlaps with the second portion52K, as viewed in the x-direction. The shape of the second portion52L is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52L has a rectangular shape.

The wiring50L includes a strip-shaped portion connecting the first portion51L and the second portion52L. The strip-shaped portion includes a portion extending obliquely from the first portion51L, a portion extending along the x-direction, and a portion extending along the y-direction toward the second portion52L.

The wiring50M includes a first portion51M and a second portion52M.

The first portion51M is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51M overlaps with the third base portion58, as viewed in the y-direction. The first portion51M is located on the side of the fourth face34in the x-direction with respect to the first portion51L, and spaced therefrom. The first portion51M overlaps with the first portion51L, as viewed in the x-direction. The shape of the first portion51M is not specifically limited. In the illustrated example, the first portion51M has a rectangular shape.

The second portion52M is located on the side of the fifth face35with respect to the first portion51M, in the y-direction. The second portion52M is located on the side of the fourth face34in the x-direction with respect to the second portion52L, and spaced therefrom. The second portion52M overlaps with the third base portion58, as viewed in the y-direction. The second portion52M overlaps with the second portion52L, as viewed in the x-direction. The shape of the second portion52M is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52M has a rectangular shape.

The wiring50M includes a strip-shaped portion connecting the first portion51M and the second portion52M. The strip-shaped portion includes a portion extending obliquely from the first portion51M, a portion extending along the x-direction, and a portion extending along the y-direction toward the second portion52M.

The wiring50N includes a first portion51N and a second portion52N.

The first portion51N is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51N overlaps with the third base portion58, as viewed in the y-direction. The first portion51N is located on the side of the fourth face34in the x-direction with respect to the first portion51M, and spaced therefrom. The first portion51N overlaps with the first portion51M, as viewed in the x-direction. The shape of the first portion51N is not specifically limited. In the illustrated example, the first portion51N has a rectangular shape.

The second portion52N is located on the side of the fifth face35with respect to the first portion51N, in the y-direction. The second portion52N is located on the side of the fourth face34in the x-direction with respect to the second portion52M, and spaced therefrom. The second portion52N overlaps with the third base portion58, as viewed in the y-direction. The second portion52N overlaps with the second portion52M, as viewed in the x-direction. The shape of the second portion52N is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52N has a rectangular shape.

The wiring50N includes a strip-shaped portion connecting the first portion51N and the second portion52N. The strip-shaped portion includes a portion extending from the first portion51N along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52N.

The wiring50O includes a first portion51O and a second portion52O.

The first portion51O is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51O overlaps with the third base portion58, as viewed in the y-direction. The first portion51O is located on the side of the fourth face34in the x-direction with respect to the first portion51N, and spaced therefrom. The first portion51O overlaps with the first portion51N, as viewed in the x-direction. The shape of the first portion51O is not specifically limited. In the illustrated example, the first portion51O has a rectangular shape.

The second portion52O is located on the side of the fifth face35with respect to the first portion51O, in the y-direction. The second portion52O is located on the side of the fourth face34in the x-direction with respect to the second portion52N, and spaced therefrom. The second portion52O overlaps with the second portion52N, as viewed in the x-direction. The shape of the second portion52O is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52O has a rectangular shape.

The wiring50O includes a strip-shaped portion connecting the first portion51O and the second portion52O. The strip-shaped portion includes a portion extending obliquely from the first portion51O, a portion extending along the x-direction, and a portion extending along the y-direction toward the second portion52O.

The wiring50P includes a first portion51P and a second portion52P.

The first portion51P is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51P overlaps with the third base portion58, as viewed in the y-direction. The first portion51P is located on the side of the fourth face34in the x-direction with respect to the first portion51O, and spaced therefrom. The first portion51P overlaps with the first portion51O, as viewed in the x-direction. The shape of the first portion51P is not specifically limited. In the illustrated example, the first portion51P has a rectangular shape.

The second portion52P is located on the side of the fifth face35with respect to the first portion51P, in the y-direction. The second portion52P is located on the side of the fourth face34in the x-direction with respect to the second portion52O, and spaced therefrom. The second portion52P is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52P overlaps with the second portion52O, as viewed in the x-direction. The shape of the second portion52P is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52P has a rectangular shape.

The wiring50P includes a strip-shaped portion connecting the first portion51P and the second portion52P. The strip-shaped portion includes a portion extending from the first portion51P along the x-direction, and a portion extending along the y-direction toward the second portion52P.

The wiring50Q includes a first portion51Q and a second portion52Q.

The first portion51Q is located on the side of the fourth face34in the x-direction, with respect to the third base portion58. The first portion51Q overlaps with a part of the third base portion58, as viewed in the x-direction. The first portion51Q overlaps with a part of the third base portion58, as viewed in the y-direction. The shape of the first portion51Q is not specifically limited. In the illustrated example, the first portion51Q has a rectangular shape.

The second portion52Q is located on the side of the fifth face35with respect to the first portion51Q, in the y-direction. The second portion52Q is located on the side of the fourth face34in the x-direction with respect to the second portion52P, and spaced therefrom. The second portion52Q is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52Q overlaps with the second portion52P, as viewed in the x-direction. The shape of the second portion52Q is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52Q has a rectangular shape.

The wiring50Q includes a strip-shaped portion connecting the first portion51Q and the second portion52Q. The strip-shaped portion includes a portion extending from the first portion51Q along the x-direction, and a portion extending along the y-direction toward the second portion52Q.

The wiring50R includes a first portion51R and a second portion52R.

The second portion52R is located on the side of the fifth face35with respect to the third base portion58, in the y-direction. The second portion52R is located on the side of the fourth face34in the x-direction with respect to the second portion52Q, and spaced therefrom. The second portion52R is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52R overlaps with the second portion52Q, as viewed in the x-direction. The shape of the second portion52R is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52R has a rectangular shape.

The wiring50R includes a strip-shaped portion connecting the third base portion58and the second portion52R. The strip-shaped portion includes a portion extending from the third base portion58along the x-direction, and a portion extending along the y-direction toward the second portion52R.

The wiring50S includes a first portion51S and a second portion52S.

The first portion51S is located on the side of the sixth face36in the y-direction, with respect to the third base portion58, and spaced therefrom. The first portion51S overlaps with the third base portion58, as viewed in the y-direction. The first portion51S is located on the side of the fourth face34in the x-direction, with respect to the second base portion56. The first portion51S overlaps with the second base portion56, as viewed in the x-direction. The shape of the first portion51S is not specifically limited. In the illustrated example, the first portion51S has a rectangular shape.

The second portion52S is located on the side of the fifth face35with respect to the first portion51S, in the y-direction. The second portion52S is located on the side of the fourth face34in the x-direction with respect to the second portion52R, and spaced therefrom. The second portion52S is spaced apart from the second base portion56and the third base portion58, as viewed in the y-direction. The second portion52S is spaced apart from the second portion52R, as viewed in the x-direction. The shape of the second portion52S is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52S has a rectangular shape.

The wiring50S includes a strip-shaped portion connecting the first portion51S and the second portion52S. The strip-shaped portion includes a portion extending from the first portion51S along the x-direction, a portion extending obliquely, a portion extending along the y-direction, a portion extending obliquely, and a portion extending along the x-direction toward the second portion52S.

The wiring50T includes a first portion51T and a second portion52T.

The first portion51T is located on the side of the fourth face34in the x-direction, with respect to the second base portion56, and spaced therefrom. The first portion51T is located on the side of the sixth face36in the y-direction, with respect to the first portion51S, and spaced therefrom. In the illustrated example, the first portion51T overlaps with the first portion51S, as viewed in the y-direction. The first portion51T overlaps with the second base portion56, as viewed in the x-direction. The shape of the first portion51T is not specifically limited. In the illustrated example, the first portion51T has a rectangular shape.

The second portion52T is located on the side of the fifth face35with respect to the first portion51T, in the y-direction. The second portion52T is located on the side of the sixth face36in the y-direction with respect to the second portion52S, and spaced therefrom. The second portion52T is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52T overlaps with the second portion52S, as viewed in the y-direction. The shape of the second portion52T is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52T has a rectangular shape.

The wiring50T includes a strip-shaped portion connecting the first portion51T and the second portion52T. The strip-shaped portion includes a portion extending from the first portion51T along the x-direction, a portion extending obliquely, a portion extending along the y-direction, a portion extending obliquely, and a portion extending along the x-direction toward the second portion52T.

The wiring50U includes a first portion51U and a second portion52U.

The second portion52U is located on the side of the fifth face35with respect to the second base portion56, in the y-direction. The second portion52U is located on the side of the sixth face36in the y-direction with respect to the second portion52T, and spaced therefrom. The second portion52U is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52U overlaps with the second portion52T, as viewed in the y-direction. The shape of the second portion52U is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52U has a rectangular shape.

The wiring50U includes a strip-shaped portion connecting the second base portion56and the second portion52U. The strip-shaped portion includes a portion extending from the second base portion56along the x-direction, and a portion extending obliquely toward the second portion52U.

The wiring50ais located on the side of the third face33in the x-direction with respect to the first base portion55, and spaced therefrom. The wiring50ais located on the side of the sixth face36in the y-direction with respect to the first portion51A, and spaced therefrom. In the illustrated example, the wiring50aoverlaps with the first portion51A and the first portion51B, as viewed in the y-direction. The wiring50aoverlaps with the first base portion55, as viewed in the x-direction. The shape of the wiring50ais not specifically limited. In the illustrated example, the wiring50ahas a strip shape extending along the x-direction.

The wiring50bincludes a second portion52b.

The second portion52bis located on the side of the third face33in the x-direction with respect to the first base portion55and the wiring50a, and spaced apart from the first base portion55and the wiring50a. The second portion52boverlaps with the wiring50a, as viewed in the x-direction. The shape of the second portion52bis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52bhas a rectangular shape.

The wiring50bincludes a strip-shaped portion extending from the second portion52balong the x-direction, toward the first base portion55.

The wiring50cincludes a first portion51cand a second portion52c.

The first portion51cis located on the side of the fourth face34in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51cis located between the connecting portion57and the first portion51H, in the y-direction. The first portion51coverlaps with the first base portion55, as viewed in the x-direction. The shape of the first portion51cis not specifically limited. In the illustrated example, the first portion51chas a rectangular shape.

The second portion52cis located on the side of the fourth face34in the x-direction with respect to the first portion51c, with a spacing therefrom, and on the side of the third face33in the x-direction with respect to the second base portion56, with a spacing therefrom. The second portion52coverlaps with the second base portion56, as viewed in the x-direction. The shape of the second portion52cis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52chas a rectangular shape.

The wiring50cincludes a strip-shaped portion connecting the first portion51cand the second portion52c. The strip-shaped portion extends along the x-direction.

The wiring50dincludes a first portion51dand a second portion52d.

The first portion51dis located on the side of the fourth face34in the x-direction with respect to the first base portion55, with a spacing therefrom, and on the side of the fourth face34with respect to the first portion51c, with a spacing therefrom. The first portion51dis located between the connecting portion57and the first portion51H in the y-direction, at a position shifted toward the fifth face35from the first portion51c. In the illustrated example, the first portion51doverlaps with the connecting portion57, as viewed in the y-direction. The first portion51doverlaps with the first base portion55and the first portion51c, as viewed in the x-direction. The shape of the first portion51dis not specifically limited. In the illustrated example, the first portion51dhas a rectangular shape.

The second portion52dis located on the side of the fourth face34in the x-direction with respect to the first portion51d, with a spacing therefrom, and on the side of the third face33in the x-direction with respect to the second base portion56, with a spacing therefrom. The second portion52dis located at a position shifted toward the fourth face34in the x-direction, from the second portion52c. The second portion52doverlaps with the second base portion56, as viewed in the x-direction. The second portion52doverlaps with the connecting portion57, as viewed in the y-direction. The shape of the second portion52dis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52dhas a rectangular shape.

The wiring50dincludes a strip-shaped portion connecting the first portion51dand the second portion52d. The strip-shaped portion extends along the x-direction.

The wiring50eincludes a first portion51eand a second portion52e.

The first portion51eis located on the side of the fourth face34in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51eis located between the connecting portion57and the first portion51H in the y-direction, at a position shifted toward the fifth face35from the first portion51d. In the illustrated example, the first portion51eoverlaps with the connecting portion57, as viewed in the y-direction. The first portion51eoverlaps with the first base portion55and the first portion51d, as viewed in the x-direction. The shape of the first portion51eis not specifically limited. In the illustrated example, the first portion51ehas a rectangular shape.

The second portion52eis located on the side of the fourth face34in the x-direction with respect to the first portion51e, with a spacing therefrom, and on the side of the third face33in the x-direction with respect to the second base portion56, with a spacing therefrom. The second portion52eis located at a position shifted toward the fourth face34in the x-direction, from the second portion52d. The second portion52eoverlaps with the second base portion56, as viewed in the x-direction. The second portion52eoverlaps with the second portion52dand the connecting portion57, as viewed in the y-direction. The shape of the second portion52eis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52ehas a rectangular shape.

The wiring50eincludes a strip-shaped portion connecting the first portion51eand the second portion52e. The strip-shaped portion extends along the x-direction.

The wiring50fis located on the side of the fourth face34in the x-direction with respect to the second base portion56, and spaced therefrom. The first portion51fis located at a position shifted toward the sixth face36in the y-direction from the wiring50U, and spaced therefrom. In the illustrated example, the wiring50foverlaps with the second base portion56, as viewed in the x-direction. In addition, the wiring50foverlaps with the wiring50U, the first portion51T, and the first portion51S, as viewed in the y-direction. The shape of the wiring50fis not specifically limited. In the illustrated example, the wiring50fhas a strip shape extending along the x-direction.

Regarding the bonding section6according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the bonding section6according to the first embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment.

The plurality of bonding sections6are formed on the substrate3. In this embodiment, the plurality of bonding sections6are formed on the first face31of the substrate3. The bonding section6is formed of, for example, a conductive material. The conductive material to form the bonding section6is not specifically limited. Examples of the conductive material to form the bonding section6include materials containing silver (Ag), copper (Cu), or gold (Au). In the subsequent description, it will be assumed that the bonding section6contains silver. The bonding section6according to this embodiment contains the same conductive material as that employed to form the conductive section5. However, the bonding section6may contain copper instead of silver, or gold instead of silver or copper. Alternatively, the conductive section5may contain Ag—Pt or Ag—Pd. The forming method of the bonding section6is not limited. For example, the bonding section6may be formed, like the conductive section5, by sintering a paste containing the mentioned metal. The thickness of the bonding section6is not specifically limited, but may be, for example, approximately 5 μm to 30 μm.

In this embodiment, as shown inFIG. 58, the plurality of bonding sections6include a bonding section6A to a bonding section6D.

The bonding section6A is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6A overlaps with the entirety of the first base portion55, as viewed in the y-direction. The shape of the bonding section6A is not specifically limited.

The bonding section6B is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6B is located on the side of the fourth face34with respect to the bonding section6A, in the x-direction. In the illustrated example, the bonding section6B overlaps with the connecting portion57, the wirings50cto50e, and the second base portion56, as viewed in the y-direction. The shape of the bonding section6B is not specifically limited.

The bonding section6C is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6C is located on the side of the fourth face34with respect to the bonding section6B, in the x-direction. In the illustrated example, the bonding section6C overlaps with the wirings50S to50U, the wiring50f, and the second base portion56, as viewed in the y-direction. The shape of the bonding section6C is not specifically limited.

The bonding section6D is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6D is located on the side of the fourth face34with respect to the bonding section6C, in the x-direction. In the illustrated example, the bonding section6D overlaps with the wirings50S to50U and the wiring50f, and is spaced apart from the second base portion56, as viewed in the y-direction. The shape of the bonding section6D is not specifically limited.

Regarding the lead1according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the lead1according to the first embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment. The plurality of leads1contain a metal, and have higher heat dissipation characteristics, for example than the substrate3. The metal to form the lead1is not specifically limited, and may be, for example, copper (Cu), aluminum, iron (Fe), oxygen-free copper, or an alloy of the cited metals, such as a Cu—Sn alloy, a Cu—Zr alloy, or a Cu—Fe alloy. The plurality of leads1may be plated with nickel (Ni). Examples of the forming method of the plurality of leads1include pressing a metal plate with a die, and patterning a metal plate by etching, without limitation thereto. The thickness of the lead1is not specifically limited, but may be, for example, approximately 0.4 mm to 0.8 mm.

The plurality of leads1include a plurality of leads1A to1G, as shown inFIG. 58. The plurality of leads1A to1G constitute conduction paths to the semiconductor chips4A to4F.

The lead1A is located on the substrate3and, in this embodiment, on the first face31. The lead1A exemplifies a first lead in the present disclosure. The lead1A is bonded to the bonding section6A, via a bonding material81. It is preferable to employ a material having high thermal conductivity as the bonding material81, such as silver paste, copper paste, or solder. However, the bonding material81may be an insulative material such as an epoxy-based resin or a silicone-based resin. In the case where the bonding section6A is not provided on the substrate3, the lead1A may be bonded to the substrate3.

The configuration of the lead1A is not specifically limited and, in this embodiment, the lead1A includes a first portion11A, a second portion12A, a third portion13A, and a fourth portion14A, each of which will be described hereunder.

The first portion11A overlaps with the substrate3as viewed in the z-direction, and is bonded to the bonding section6A via the bonding material81.

The third portion13A and the fourth portion14A are covered with the encapsulating resin7. The third portion13A is connected to the first portion11A and the fourth portion14A. In the illustrated example, the third portion13A is connected to the first portion11A. In addition, the third portion13A is spaced apart from the sixth face36, as viewed in the z-direction. The fourth portion14A is shifted from the first portion11A in the z-direction. The end portion of the fourth portion14A is flush with a sixth face76of the resin7.

The second portion12A is connected to the end portion of the fourth portion14A, and corresponds to a portion of the lead1A sticking out from the encapsulating resin7. The second portion12A sticks out to the opposite side of the first portion11A, in the y-direction. The second portion12A is used, for example, to electrically connect the semiconductor device A3to an external circuit. The second portion12A is bent, for example, in the z-direction. In this embodiment, the lead1A includes a pair of second portions12A, which are spaced apart from each other in the x-direction.

The lead1B is located on the substrate3and, in this embodiment, on the first face31. The lead1B exemplifies a first lead in the present disclosure. The lead1B is bonded to the bonding section6B, via the bonding material81. In the case where the bonding section6B is not provided on the substrate3, the lead1B may be bonded to the substrate3.

The configuration of the lead1B is not specifically limited. In this embodiment, the lead1B includes a first portion11B, a second portion12B, a third portion13B, and a fourth portion14B, each of which will be described hereunder.

The first portion11B overlaps with the substrate3as viewed in the z-direction, and is bonded to the bonding section6B via the bonding material81.

The third portion13B and the fourth portion14B are covered with the encapsulating resin7. The third portion13B is connected to the first portion11B and the fourth portion14B. In the illustrated example, the third portion13B is connected to the first portion11B. In addition, the third portion13B is spaced apart from the sixth face36, as viewed in the z-direction. The fourth portion14B is shifted from the first portion11B in the z-direction. The end portion of the fourth portion14B is flush with the sixth face76of the resin7.

The second portion12B is connected to the fourth portion14B, and corresponds to a portion of the lead1B sticking out from the encapsulating resin7. The second portion12B sticks out to the opposite side of the first portion11B, in the y-direction. The second portion12B is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion12B is bent, for example, in the z-direction.

The lead1C is located on the substrate3and, in this embodiment, on the first face31. The lead1C exemplifies a first lead in the present disclosure. The lead1C is bonded to the bonding section6C, via the bonding material81. In the case where the bonding section6C is not provided on the substrate3, the lead1C may be bonded to the substrate3.

The configuration of the lead1C is not specifically limited. In this embodiment, the lead1C includes a first portion11C, a second portion12C, a third portion13C, and a fourth portion14C, each of which will be described hereunder.

The first portion11C overlaps with the substrate3as viewed in the z-direction, and is bonded to the bonding section6C via the bonding material81.

The third portion13C and the fourth portion14C are covered with the encapsulating resin7. The third portion13C is connected to the first portion11C and the fourth portion14C. In the illustrated example, the third portion13C is connected to the first portion11C. The fourth portion14C is, like the fourth portion14B of the lead1B, shifted from the first portion11C in the z-direction. The end portion of the fourth portion14C is flush with the sixth face76of the resin7.

The second portion12C is connected to the end portion of the fourth portion14C, and corresponds to a portion of the lead1C sticking out from the encapsulating resin7. The second portion12C sticks out to the opposite side of the first portion11C, in the y-direction. The second portion12C is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion12C is bent, for example, in the z-direction.

The lead1D is located on the substrate3and, in this embodiment, on the first face31. The lead1D exemplifies a first lead in the present disclosure. The lead1D is bonded to the bonding section6D, via the bonding material81. In the case where the bonding section6D is not provided on the substrate3, the lead1D may be bonded to the substrate3.

The configuration of the lead1D is not specifically limited. In this embodiment the lead1D includes, as shown inFIG. 4andFIG. 14, a first portion11D, a second portion12D, a third portion13D, and a fourth portion14D, each of which will be described hereunder.

The first portion11D overlaps with the substrate3as viewed in the z-direction, and is bonded to the bonding section6D via the bonding material81.

The third portion13D and the fourth portion14D are covered with the encapsulating resin7. The third portion13D is connected to the first portion11D and the fourth portion14D. In the illustrated example, the third portion13D is connected to the first portion1ID. The fourth portion14D is, like the fourth portion14B of the lead1B, shifted from the first portion11D in the z-direction. The end portion of the fourth portion14D is flush with the sixth face76of the resin7.

The second portion12D is connected to the end portion of the fourth portion14D, and corresponds to a portion of the lead1D sticking out from the encapsulating resin7. The second portion12D sticks out to the opposite side of the first portion11D, in the y-direction. The second portion12D is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion12D is bent, for example, in the z-direction.

The lead1E is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1E located on the side to which the sixth face36is oriented, with respect to the substrate3in the y-direction.

The configuration of the lead1E is not specifically limited. In this embodiment the lead1E includes a second portion12E and a fourth portion14E, each of which will be described hereunder.

The fourth portion14E is covered with the encapsulating resin7. The fourth portion14E is, like the fourth portion14D of the lead1D, shifted from the first portion11E in the z-direction. The fourth portion14E overlaps with the first portion11C and the first portion11D, as viewed in the y-direction. The end portion of the fourth portion14E is flush with the sixth face76of the resin7.

The second portion12E is connected to the end portion of the fourth portion14E, and corresponds to a portion of the lead1E sticking out from the encapsulating resin7. The second portion12E sticks out to the opposite side of the fourth portion14E, in the y-direction. The second portion12E is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion12E is bent, for example, in the z-direction.

The lead1F is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1F is located on the side to which the sixth face36is oriented, with respect to the substrate3in the y-direction. The lead1F is located on the opposite side of the fourth portion14D, across the lead1E.

The configuration of the lead1F is not specifically limited. In this embodiment the lead1F includes a second portion12F and a fourth portion14F, each of which will be described hereunder.

The fourth portion14F is covered with the encapsulating resin7. The fourth portion14F is, like the fourth portion14D of the lead1D, shifted from the first portion11F in the z-direction. The fourth portion14F overlaps with the first portion11D, as viewed in the y-direction. The end portion of the fourth portion14F is flush with the sixth face76of the resin7.

The second portion12F is connected to the end portion of the fourth portion14F, and corresponds to a portion of the lead1F sticking out from the encapsulating resin7. The second portion12F sticks out to the opposite side of the fourth portion14F, in the y-direction. The second portion12F is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion12F is bent, for example, in the z-direction.

The lead1G is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1G is located on the side to which the fourth face34is oriented, with respect to the substrate3in the x-direction. The lead1G is located on the opposite side of the fourth portion14E, across the lead1F.

The configuration of the lead1G is not specifically limited. In this embodiment the lead1G includes a second portion12G and a fourth portion14G, each of which will be described hereunder.

The fourth portion14G is covered with the encapsulating resin7. The fourth portion14G is, like the fourth portion14D of the lead1D, shifted from the first portion11G in the z-direction, to the side to which the main surface111D is oriented. The fourth portion14G overlaps with the fourth portion14F, as viewed in the y-direction. In addition, the fourth portion14G overlaps with the first portion11D, as viewed in the x-direction. The end portion of the fourth portion14G is flush with the sixth face76of the resin7.

The second portion12G is connected to the fourth portion14G, and corresponds to a portion of the lead1G sticking out from the encapsulating resin7. The second portion12G sticks out to the opposite side of the fourth portion14G, in the y-direction. The second portion12G is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion12G is bent, for example, in the z-direction.

Regarding the lead2according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the lead2according to the first embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment. Regarding an element on which no specific description is given, a similar configuration to that of the corresponding element of the semiconductor device A2may be adopted, as appropriate.

The plurality of leads2contain a metal, and have higher heat dissipation characteristics, for example than the substrate3. The metal to form the lead2is not specifically limited, and may be, for example, copper (Cu), aluminum, iron (Fe), oxygen-free copper, or an alloy of the cited metals, such as a Cu—Sn alloy, a Cu—Zr alloy, or a Cu—Fe alloy. The plurality of leads2may be plated with nickel (Ni). Examples of the forming method of the plurality of leads2include pressing a metal plate with a die, and patterning a metal plate by etching, without limitation thereto. The thickness of the lead2is not specifically limited, but may be, for example, approximately 0.4 mm to 0.8 mm. The plurality of leads2are located so as to overlap with the second region303of the substrate3, as viewed in the z-direction.

In this embodiment, the plurality of leads2include a plurality of leads2A to2U, as shown inFIG. 57andFIG. 58. The plurality of leads2A to2H, and2S to2U respectively constitute conduction paths to the control chips4G and4H. The plurality of leads2I to2R constitute conduction paths to the primary-side circuit chip4J.

The lead2A is spaced apart from the plurality of leads1. The lead2A is located on the conductive section5. The lead2A is electrically connected to the conductive section5. The lead2A exemplifies a second lead in the present disclosure. The lead2A is bonded to the second portion52A of the wiring50A in the conductive section5, via a conductive bonding material82. The conductive bonding material82may be any material that is capable of bonding, and electrically connecting, the lead2A to the second portion52A. For example, silver paste, copper paste, or solder may be employed as the conductive bonding material82. The conductive bonding material82corresponds to the first conductive bonding material in the present disclosure.

The configuration of the lead2A is not specifically limited. In this embodiment the lead2A includes, like that of the semiconductor device A2, a first portion21A, a second portion22A, a third portion23A, and a fourth portion24A, each of which will be described hereunder.

The first portion21A is bonded to the second portion52A of the wiring50A. The shape of the first portion21A is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21A has a bent shape including a portion extending along the x-direction, and a portion extending along the y-direction. The first portion21A overlaps with the third face33of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the third face33is oriented.

The third portion23A and the fourth portion24A are covered with the encapsulating resin7. The third portion23A is connected to the first portion21A and the fourth portion24A. The fourth portion24A is shifted in the z-direction with respect to the first portion21A. The end portion of the fourth portion24A is flush with a fifth face75of the resin7. In the illustrated example, the third portion23A and the fourth portion24A generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23A, or fourth portion24A in the x-direction).

The second portion22A is connected to the end portion of the fourth portion24A, and corresponds to a portion of the lead2A sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22A sticks out to the opposite side of the first portion21A, in the y-direction. The second portion22A is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22A is bent, for example, in the z-direction. The second portion22A, the third portion23A, and the fourth portion24A each include, on the respective sides thereof in the x-direction, edges extending along the y-direction.

The lead2B is spaced apart from the plurality of leads1. The lead2B is located on the conductive section5. The lead2B is electrically connected to the conductive section5. The lead2B exemplifies a second lead in the present disclosure. The lead2B is bonded to the second portion52B of the wiring50B in the conductive section5, via the conductive bonding material82.

The configuration of the lead2B is not specifically limited. In this embodiment, the lead2B includes a first portion21B, a second portion22B, a third portion23B, and a fourth portion24B, each of which will be described hereunder.

The first portion21B is bonded to the second portion52B of the wiring50B. The shape of the first portion21B is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21B has a bent shape including a portion inclined with respect to the x-direction and the y-direction, and a portion extending along the y-direction. The first portion21B overlaps with the third face33of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the third face33is oriented. In the illustrated example, the first portion21B overlaps with the second portion52B, as viewed in the z-direction.

The third portion23B and the fourth portion24B are covered with the encapsulating resin7. The third portion23B is connected to the first portion21B and the fourth portion24B. The fourth portion24B is shifted in the z-direction with respect to the first portion21B. The end portion of the fourth portion24B is flush with the fifth face75of the resin7. In the illustrated example, the third portion23B and the fourth portion24B generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23B or fourth portion24B in the x-direction).

The second portion22B is connected to the end portion of the fourth portion24B, and corresponds to a portion of the lead2B sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22B sticks out to the opposite side of the first portion21B, in the y-direction. The second portion22B is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22B is bent, for example, in the z-direction. The second portion22B, the third portion23B, and the fourth portion24B each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22B, the third portion23B, and the fourth portion24B, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22A, the third portion23A, and the fourth portion24A, on the side of the fourth face34in the x-direction.

The lead2C is spaced apart from the plurality of leads1. The lead2C is located on the conductive section5. The lead2C is electrically connected to the conductive section5. The lead2C exemplifies a second lead in the present disclosure. The lead2C is bonded to the second portion52C of the wiring50C in the conductive section5, via the conductive bonding material82.

The configuration of the lead2C is not specifically limited. In this embodiment, the lead2C includes a first portion21C, a second portion22C, a third portion23C, and a fourth portion24C, each of which will be described hereunder.

The first portion21C is bonded to the second portion52C of the wiring50C. The shape of the first portion21C is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21C has a bent shape including portions extending along the x-direction and the y-direction, and a portion interposed therebetween and inclined with respect to the x-direction and the y-direction. The first portion21C overlaps with the third face33of the substrate3as viewed in the z-direction, and sticks out in the y-direction toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21C overlaps with the second portion52C, as viewed in the z-direction.

The third portion23C and the fourth portion24C are covered with the encapsulating resin7. The third portion23C is connected to the first portion21C and the fourth portion24C. The fourth portion24C is shifted in the z-direction with respect to the first portion21C. The end portion of the fourth portion24C is flush with the fifth face75of the resin7. In the illustrated example, the third portion23C and the fourth portion24C generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23C or fourth portion24C in the x-direction).

The second portion22C is connected to the end portion of the fourth portion24C, and corresponds to a portion of the lead2C sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22C sticks out to the opposite side of the first portion21C, in the y-direction. The second portion22C is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22C is bent, for example, in the z-direction. The second portion22C, the third portion23C, and the fourth portion24C each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22C, the third portion23C, and the fourth portion24C, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22B, the third portion23B, and the fourth portion24B, on the side of the fourth face34in the x-direction.

The lead2D is spaced apart from the plurality of leads1. The lead2D is located on the conductive section5. The lead2D is electrically connected to the conductive section5. The lead2D exemplifies a second lead in the present disclosure. The lead2D is bonded to the second portion52D of the wiring50D in the conductive section5, via the conductive bonding material82.

The configuration of the lead2D is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2D includes a first portion21D, a second portion22D, a third portion23D, and a fourth portion24D, each of which will be described hereunder.

The first portion21D is bonded to the second portion52D of the wiring50D. The shape of the first portion21D is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21D has a strip shape extending along the y-direction. The first portion21D overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21D overlaps with the second portion52D, as viewed in the z-direction.

The third portion23D and the fourth portion24D are covered with the encapsulating resin7. The third portion23D is connected to the first portion21D and the fourth portion24D. The fourth portion24D is shifted in the z-direction with respect to the first portion21D. The end portion of the fourth portion24D is flush with the fifth face75of the resin7. In the illustrated example, the third portion23D and the fourth portion24D generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23D or fourth portion24D in the x-direction).

The second portion22D is connected to the end portion of the fourth portion24D, and corresponds to a portion of the lead2D sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22D sticks out to the opposite side of the first portion21D, in the y-direction. The second portion22D is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22D is bent in the z-direction. The second portion22D, the third portion23D, and the fourth portion24D each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22D, the third portion23D, and the fourth portion24D, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22C, the third portion23C, and the fourth portion24C, on the side of the fourth face34in the x-direction.

The lead2E is spaced apart from the plurality of leads1. The lead2E is located on the conductive section5. The lead2E is electrically connected to the conductive section5. The lead2E exemplifies a second lead in the present disclosure. The lead2E is bonded to the second portion52E of the wiring50E in the conductive section5, via the conductive bonding material82.

The configuration of the lead2E is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2E includes a first portion21E, a second portion22E, a third portion23E, and a fourth portion24E, each of which will be described hereunder.

The first portion21E is bonded to the second portion52E of the wiring50E. The shape of the first portion21E is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21E has a strip shape extending along the y-direction. The first portion21E overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21E overlaps with the second portion52E, as viewed in the z-direction.

The third portion23E and the fourth portion24E are covered with the encapsulating resin7. The third portion23E is connected to the first portion21E and the fourth portion24E. The fourth portion24E is shifted in the z-direction with respect to the first portion21E. The end portion of the fourth portion24E is flush with the fifth face75of the resin7. In the illustrated example, the third portion23E and the fourth portion24E generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23E or fourth portion24E in the x-direction).

The second portion22E is connected to the end portion of the fourth portion24E, and corresponds to a portion of the lead2E sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22E sticks out to the opposite side of the first portion21E, in the y-direction. The second portion22E is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22E is bent in the z-direction. The second portion22E, the third portion23E, and the fourth portion24E each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22E, the third portion23E, and the fourth portion24E, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22D, the third portion23D, and the fourth portion24D, on the side of the fourth face34in the x-direction.

The lead2F is spaced apart from the plurality of leads1. The lead2F is located on the conductive section5. The lead2F is electrically connected to the conductive section5. The lead2F exemplifies a second lead in the present disclosure. The lead2F is bonded to the second portion52F of the wiring50F in the conductive section5, via the conductive bonding material82.

The configuration of the lead2F is not specifically limited. In this embodiment, the lead2F includes a first portion21F, a second portion22F, a third portion23F, and a fourth portion24F, each of which will be described hereunder.

The first portion21F is bonded to the second portion52F of the wiring50F. The shape of the first portion21F is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21F has a strip shape extending along the y-direction. The first portion21F overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21F overlaps with the second portion52F, as viewed in the z-direction.

The third portion23F and the fourth portion24F are covered with the encapsulating resin7. The third portion23F is connected to the first portion21F and the fourth portion24F. The fourth portion24F is shifted in the z-direction with respect to the first portion21F. The end portion of the fourth portion24F is flush with the fifth face75of the resin7. In the illustrated example, the third portion23F and the fourth portion24F generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23F or fourth portion24F in the x-direction).

The second portion22F is connected to the end portion of the fourth portion24F, and corresponds to a portion of the lead2F sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22F sticks out to the opposite side of the first portion21F, in the y-direction. The second portion22F is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22F is bent in the z-direction. The second portion22F, the third portion23F, and the fourth portion24F each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22F, the third portion23F, and the fourth portion24F, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22E, the third portion23E, and the fourth portion24E, on the side of the fourth face34in the x-direction.

The lead2G is spaced apart from the plurality of leads1. The lead2G is located on the conductive section5. The lead2G is electrically connected to the conductive section5. The lead2G exemplifies a second lead in the present disclosure. The lead2G is bonded to the second portion52G of the wiring50G in the conductive section5, via the conductive bonding material82.

The configuration of the lead2G is not specifically limited. In this embodiment, the lead2G includes a first portion21G, a second portion22G, a third portion23G, and a fourth portion24G, each of which will be described hereunder.

The first portion21G is bonded to the second portion52G of the wiring50G. The shape of the first portion21G is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21G has a strip shape extending along the y-direction. The first portion21G overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21G overlaps with the second portion52G, as viewed in the z-direction.

The third portion23G and the fourth portion24G are covered with the encapsulating resin7. The third portion23G is connected to the first portion21G and the fourth portion24G. The fourth portion24G is shifted in the z-direction with respect to the first portion21G. The end portion of the fourth portion24G is flush with the fifth face75of the resin7. In the illustrated example, the third portion23G and the fourth portion24G generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23G or fourth portion24G in the x-direction).

The second portion22G is connected to the end portion of the fourth portion24G, and corresponds to a portion of the lead2G sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22G sticks out to the opposite side of the first portion21G, in the y-direction. The second portion22G is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22G is bent, for example, in the z-direction. The second portion22G, the third portion23G, and the fourth portion24G each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22G, the third portion23G, and the fourth portion24G, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22F, the third portion23F, and the fourth portion24F, on the side of the fourth face34in the x-direction.

The lead2H is spaced apart from the plurality of leads1. The lead2H is located on the conductive section5. The lead2H is electrically connected to the conductive section5. The lead2H exemplifies a second lead in the present disclosure. The lead2H is bonded to the second portion52H of the wiring50H in the conductive section5, via the conductive bonding material82.

The configuration of the lead2H is not specifically limited. In this embodiment, the lead2H includes a first portion21H, a second portion22H, a third portion23H, and a fourth portion24H, each of which will be described hereunder.

The first portion21H is bonded to the second portion52H of the wiring50H. The shape of the first portion21H is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21H has a strip shape extending along the y-direction. The first portion21H overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21H overlaps with the second portion52H, as viewed in the z-direction.

The third portion23H and the fourth portion24H are covered with the encapsulating resin7. The third portion23H is connected to the first portion21H and the fourth portion24H. The fourth portion24H is shifted in the z-direction with respect to the first portion21H. The end portion of the fourth portion24H is flush with the fifth face75of the resin7. In the illustrated example, the third portion23H and the fourth portion24H generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23H or fourth portion24H in the x-direction).

The second portion22H is connected to the end portion of the fourth portion24H, and corresponds to a portion of the lead2H sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22H sticks out to the opposite side of the first portion21H, in the y-direction. The second portion22H is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22H is bent, for example, in the z-direction. The second portion22H, the third portion23H, and the fourth portion24H each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22H, the third portion23H, and the fourth portion24H, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22G, the third portion23G, and the fourth portion24G, on the side of the fourth face34in the x-direction.

The lead2I is spaced apart from the plurality of leads1. The lead2I is located on the conductive section5. The lead2I is electrically connected to the conductive section5. The lead2I exemplifies a second lead in the present disclosure. The lead2I is bonded to the second portion52I of the wiring50I in the conductive section5, via the conductive bonding material82.

The configuration of the lead2I is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2I includes a first portion21I, a second portion22I, a third portion23I, and a fourth portion24I, each of which will be described hereunder.

The first portion21I is bonded to the second portion52I of the wiring50I. The shape of the first portion21I is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21I has a strip shape extending along the y-direction. The first portion21I overlaps with the fifth face35as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21I overlaps with the second portion52I, as viewed in the z-direction.

The third portion23I and the fourth portion24I are covered with the encapsulating resin7. The third portion23I is connected to the first portion21I and the fourth portion24I. The fourth portion24I is shifted in the z-direction with respect to the first portion21I. The end portion of the fourth portion24I is flush with the fifth face75of the resin7. In the illustrated example, the third portion23I and the fourth portion24I generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23I or fourth portion24I in the x-direction). The third portion23I overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22I is connected to the end portion of the fourth portion24I, and corresponds to a portion of the lead2I sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22I sticks out to the opposite side of the first portion21I, in the y-direction. The second portion22I is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22I is bent, for example, in the z-direction. The second portion22I, the third portion23I, and the fourth portion24I each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22I, the third portion23I, and the fourth portion24I, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22H, the third portion23H, and the fourth portion24H, on the side of the fourth face34in the x-direction.

The lead2J is spaced apart from the plurality of leads1. The lead2J is located on the conductive section5. The lead2J is electrically connected to the conductive section5. The lead2J exemplifies a second lead in the present disclosure. The lead2J is bonded to the second portion52J of the wiring50J in the conductive section5, via the conductive bonding material82.

The configuration of the lead2J is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2J includes a first portion21J, a second portion22J, a third portion23J, and a fourth portion24J, each of which will be described hereunder.

The first portion21J is bonded to the second portion52J of the wiring50J. The shape of the first portion21J is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21J has a strip shape extending along the y-direction. The first portion21J overlaps with the fifth face35as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21J overlaps with the second portion52J, as viewed in the z-direction.

The third portion23J and the fourth portion24J are covered with the encapsulating resin7. The third portion23J is connected to the first portion21J and the fourth portion24J. The fourth portion24J is shifted in the z-direction with respect to the first portion21J. The end portion of the fourth portion24J is flush with the fifth face75of the resin7. In the illustrated example, the third portion23J and the fourth portion24J generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23J or fourth portion24J in the x-direction). The third portion23J overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22J is connected to the end portion of the fourth portion24J, and corresponds to a portion of the lead2J sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22J sticks out to the opposite side of the first portion21J, in the y-direction. The second portion22J is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22J is bent, for example, in the z-direction. The second portion22J, the third portion23J, and the fourth portion24J each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22J, the third portion23J, and the fourth portion24J, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22I, the third portion23I, and the fourth portion24I, on the side of the fourth face34in the x-direction.

The lead2K is spaced apart from the plurality of leads1. The lead2K is located on the conductive section5. The lead2K is electrically connected to the conductive section5. The lead2K exemplifies a second lead in the present disclosure. The lead2K is bonded to the second portion52K of the wiring50K in the conductive section5, via the conductive bonding material82.

The configuration of the lead2K is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2K includes a first portion21K, a second portion22K, a third portion23K, and a fourth portion24K, each of which will be described hereunder.

The first portion21K is bonded to the second portion52K of the wiring50K. The shape of the first portion21K is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21K has a strip shape extending along the y-direction. The first portion21K overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21K overlaps with the second portion52K, as viewed in the z-direction.

The third portion23K and the fourth portion24K are covered with the encapsulating resin7. The third portion23K is connected to the first portion21K and the fourth portion24K. The fourth portion24K is shifted in the z-direction with respect to the first portion21K. The end portion of the fourth portion24K is flush with the fifth face75of the resin7. In the illustrated example, the third portion23K and the fourth portion24K generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23K or fourth portion24K in the x-direction). The third portion23K overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22K is connected to the end portion of the fourth portion24K, and corresponds to a portion of the lead2K sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22K sticks out to the opposite side of the first portion21K, in the y-direction. The second portion22K is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22K is bent, for example, in the z-direction. The second portion22K, the third portion23K, and the fourth portion24K each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22K, the third portion23K, and the fourth portion24K, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22J, the third portion23J, and the fourth portion24J, on the side of the fourth face34in the x-direction.

The lead2L is spaced apart from the plurality of leads1. The lead2L is located on the conductive section5. The lead2L is electrically connected to the conductive section5. The lead2L exemplifies a second lead in the present disclosure. The lead2L is bonded to the second portion52L of the wiring50L in the conductive section5, via the conductive bonding material82.

The configuration of the lead2L is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2L includes a first portion21L, a second portion22L, a third portion23L, and a fourth portion24L, each of which will be described hereunder.

The first portion21L is bonded to the second portion52L of the wiring50L. The shape of the first portion21L is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21L has a strip shape extending along the y-direction. The first portion21L overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21L overlaps with the second portion52L, as viewed in the z-direction.

The third portion23L and the fourth portion24L are covered with the encapsulating resin7. The third portion23L is connected to the first portion21L and the fourth portion24L. The fourth portion24L is shifted in the z-direction with respect to the first portion21L. The end portion of the fourth portion24L is flush with the fifth face75of the resin7. In the illustrated example, the third portion23L and the fourth portion24L generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23L or fourth portion24L in the x-direction). The third portion23L overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22L is connected to the end portion of the fourth portion24L, and corresponds to a portion of the lead2L sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22L sticks out to the opposite side of the first portion21L, in the y-direction. The second portion22L is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22L is bent, for example, in the z-direction. The second portion22L, the third portion23L, and the fourth portion24L each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22L, the third portion23L, and the fourth portion24L, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22K, the third portion23K, and the fourth portion24K, on the side of the fourth face34in the x-direction.

The lead2M is spaced apart from the plurality of leads1. The lead2M is located on the conductive section5. The lead2M is electrically connected to the conductive section5. The lead2M exemplifies a second lead in the present disclosure. The lead2M is bonded to the second portion52M of the wiring50M in the conductive section5, via the conductive bonding material82.

The configuration of the lead2M is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2M includes a first portion21M, a second portion22M, a third portion23M, and a fourth portion24M, each of which will be described hereunder.

The first portion21M is bonded to the second portion52M of the wiring50M. The shape of the first portion21M is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21M has a strip shape extending along the y-direction. The first portion21M overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21M overlaps with the second portion52M, as viewed in the z-direction.

The third portion23M and the fourth portion24M are covered with the encapsulating resin7. The third portion23M is connected to the first portion21M and the fourth portion24M. The fourth portion24M is shifted in the z-direction with respect to the first portion21M. The end portion of the fourth portion24M is flush with the fifth face75of the resin7. In the illustrated example, the third portion23M and the fourth portion24M generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23M or fourth portion24M in the x-direction). The third portion23M overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22M is connected to the end portion of the fourth portion24M, and corresponds to a portion of the lead2M sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22M sticks out to the opposite side of the first portion21M, in the y-direction. The second portion22M is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22M is bent, for example, in the z-direction. The second portion22M, the third portion23M, and the fourth portion24M each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22M, the third portion23M, and the fourth portion24M, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22L, the third portion23L, and the fourth portion24L, on the side of the fourth face34in the x-direction.

The lead2N is spaced apart from the plurality of leads1. The lead2N is located on the conductive section5. The lead2N is electrically connected to the conductive section5. The lead2N exemplifies a second lead in the present disclosure. The lead2N is bonded to the second portion52N of the wiring50N in the conductive section5, via the conductive bonding material82.

The configuration of the lead2N is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2N includes a first portion21N, a second portion22N, a third portion23N, and a fourth portion24N, each of which will be described hereunder.

The first portion21N is bonded to the second portion52N of the wiring50N. The shape of the first portion21N is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21N has a strip shape extending along the y-direction. The first portion21N overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21N overlaps with the second portion52N, as viewed in the z-direction.

The third portion23N and the fourth portion24N are covered with the encapsulating resin7. The third portion23N is connected to the first portion21N and the fourth portion24N. The fourth portion24N is shifted in the z-direction with respect to the first portion21N. The end portion of the fourth portion24N is flush with the fifth face75of the resin7. In the illustrated example, the third portion23N and the fourth portion24N generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23N or fourth portion24N in the x-direction). The third portion23N overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22N is connected to the end portion of the fourth portion24N, and corresponds to a portion of the lead2N sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22N sticks out to the opposite side of the first portion21N, in the y-direction. The second portion22N is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22N is bent, for example, in the z-direction. The second portion22N, the third portion23N, and the fourth portion24N each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22N, the third portion23N, and the fourth portion24N, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22M, the third portion23M, and the fourth portion24M, on the side of the fourth face34in the x-direction.

The lead2O is spaced apart from the plurality of leads1. The lead2O is located on the conductive section5. The lead2O is electrically connected to the conductive section5. The lead2O exemplifies a second lead in the present disclosure. The lead2O is bonded to the second portion52O of the wiring50O in the conductive section5, via the conductive bonding material82.

The configuration of the lead2O is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2O includes a first portion21O, a second portion22O, a third portion23O, and a fourth portion24O, each of which will be described hereunder.

The first portion21O is bonded to the second portion52O of the wiring50O. The shape of the first portion21O is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21O has a strip shape extending along the y-direction. The first portion21O overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21O overlaps with the second portion52O, as viewed in the z-direction.

The third portion23O and the fourth portion24O are covered with the encapsulating resin7. The third portion23O is connected to the first portion21O and the fourth portion24O. The fourth portion24O is shifted in the z-direction with respect to the first portion21O. The end portion of the fourth portion24O is flush with the fifth face75of the resin7. In the illustrated example, the third portion23O and the fourth portion24O generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23O or fourth portion24O in the x-direction). The third portion23O overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22O is connected to the end portion of the fourth portion24O, and corresponds to a portion of the lead2O sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22O sticks out to the opposite side of the first portion21O, in the y-direction. The second portion22O is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22O is bent, for example, in the z-direction. The second portion22O, the third portion23O, and the fourth portion24O each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22O, the third portion23O, and the fourth portion24O, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22N, the third portion23N, and the fourth portion24N, on the side of the fourth face34in the x-direction.

The lead2P is spaced apart from the plurality of leads1. The lead2P is located on the conductive section5. The lead2P is electrically connected to the conductive section5. The lead2P exemplifies a second lead in the present disclosure. The lead2P is bonded to the second portion52P of the wiring50P in the conductive section5, via the conductive bonding material82.

The configuration of the lead2P is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2P includes a first portion21P, a second portion22P, a third portion23P, and a fourth portion24P, each of which will be described hereunder.

The first portion21P is bonded to the second portion52P of the wiring50P. The shape of the first portion21P is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21P has a strip shape extending along the y-direction. The first portion21P overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21P overlaps with the second portion52P, as viewed in the z-direction.

The third portion23P and the fourth portion24P are covered with the encapsulating resin7. The third portion23P is connected to the first portion21P and the fourth portion24P. The fourth portion24P is shifted in the z-direction with respect to the first portion21P. The end portion of the fourth portion24P is flush with the fifth face75of the resin7. In the illustrated example, the third portion23P and the fourth portion24P generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23P or fourth portion24P in the x-direction). The third portion23P overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22P is connected to the end portion of the fourth portion24P, and corresponds to a portion of the lead2P sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22P sticks out to the opposite side of the first portion21P, in the y-direction. The second portion22P is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22P is bent, for example, in the z-direction. The second portion22P, the third portion23P, and the fourth portion24P each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22P, the third portion23P, and the fourth portion24P, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22O, the third portion23O, and the fourth portion24O, on the side of the fourth face34in the x-direction.

The lead2Q is spaced apart from the plurality of leads1. The lead2Q is located on the conductive section5. The lead2Q is electrically connected to the conductive section5. The lead2Q exemplifies a second lead in the present disclosure. The lead2Q is bonded to the second portion52Q of the wiring50Q in the conductive section5, via the conductive bonding material82.

The configuration of the lead2Q is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2Q includes a first portion21Q, a second portion22Q, a third portion23Q, and a fourth portion24Q, each of which will be described hereunder.

The first portion21Q is bonded to the second portion52Q of the wiring50Q. The shape of the first portion21Q is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21Q has a strip shape extending along the y-direction. The first portion21Q overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21Q overlaps with the second portion52Q, as viewed in the z-direction.

The third portion23Q and the fourth portion24Q are covered with the encapsulating resin7. The third portion23Q is connected to the first portion21Q and the fourth portion24Q. The fourth portion24Q is shifted in the z-direction with respect to the first portion21Q. The end portion of the fourth portion24Q is flush with the fifth face75of the resin7. In the illustrated example, the third portion23Q and the fourth portion24Q generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23Q or fourth portion24Q in the x-direction). The third portion23Q overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22Q is connected to the end portion of the fourth portion24Q, and corresponds to a portion of the lead2Q sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22Q sticks out to the opposite side of the first portion21Q, in the y-direction. The second portion22Q is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22Q is bent, for example, in the z-direction. The second portion22Q, the third portion23Q, and the fourth portion24Q each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22Q, the third portion23Q, and the fourth portion24Q, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22P, the third portion23P, and the fourth portion24P, on the side of the fourth face34in the x-direction.

The lead2R is spaced apart from the plurality of leads1. The lead2R is located on the conductive section5. The lead2R is electrically connected to the conductive section5. The lead2R exemplifies a second lead in the present disclosure. The lead2R is bonded to the second portion52R of the wiring50R in the conductive section5, via the conductive bonding material82.

The configuration of the lead2R is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2R includes a first portion21R, a second portion22R, a third portion23R, and a fourth portion24R, each of which will be described hereunder.

The first portion21R is bonded to the second portion52R of the wiring50R. The shape of the first portion21R is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21R has a strip shape extending along the y-direction. The first portion21R overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35in the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21R overlaps with the second portion52R, as viewed in the z-direction.

The third portion23R and the fourth portion24R are covered with the encapsulating resin7. The third portion23R is connected to the first portion21R and the fourth portion24R. The fourth portion24R is shifted in the z-direction with respect to the first portion21R. The end portion of the fourth portion24R is flush with the fifth face75of the resin7. In the illustrated example, the third portion23R and the fourth portion24R generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23R or fourth portion24R in the x-direction). The third portion23R overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22R is connected to the end portion of the fourth portion24R, and corresponds to a portion of the lead2R sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22R sticks out to the opposite side of the first portion21R, in the y-direction. The second portion22R is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22R is bent, for example, in the z-direction. The second portion22R, the third portion23R, and the fourth portion24R each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22R, the third portion23R, and the fourth portion24R, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22Q, the third portion23Q, and the fourth portion24Q, on the side of the fourth face34in the x-direction.

The lead2S is spaced apart from the plurality of leads1. The lead2S is located on the conductive section5. The lead2S is electrically connected to the conductive section5. The lead2S exemplifies a second lead in the present disclosure. The lead2S is bonded to the second portion52S of the wiring50S in the conductive section5, via the conductive bonding material82.

The configuration of the lead2S is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2S includes a first portion21S, a second portion22S, a third portion23S, and a fourth portion24S, each of which will be described hereunder.

The first portion21S is bonded to the second portion52S of the wiring50S. The shape of the first portion21S is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21S has a bent shape including a portion extending along the x-direction, a portion inclined with respect to the x-direction and the y-direction, and a portion extending along the y-direction. The first portion21S overlaps with the fourth face34of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the fourth face34is oriented. In the illustrated example, the first portion21S overlaps with the second portion52S, as viewed in the z-direction.

The third portion23S and the fourth portion24S are covered with the encapsulating resin7. The third portion23S is connected to the first portion21S and the fourth portion24S. The fourth portion24S is shifted in the z-direction with respect to the first portion21S. The end portion of the fourth portion24S is flush with the fifth face75of the resin7. In the illustrated example, the third portion23S and the fourth portion24S generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23S or fourth portion24S in the x-direction).

The second portion22S is connected to the end portion of the fourth portion24S, and corresponds to a portion of the lead2S sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22S sticks out to the opposite side of the first portion21S, in the y-direction. The second portion22S is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22S is bent, for example, in the z-direction. The second portion22S, the third portion23S, and the fourth portion24S each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22S, the third portion23S, and the fourth portion24S, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22R, the third portion23R, and the fourth portion24R, on the side of the fourth face34in the x-direction.

The lead2T is spaced apart from the plurality of leads1. The lead2T is located on the conductive section5. The lead2T is electrically connected to the conductive section5. The lead2T exemplifies a second lead in the present disclosure. The lead2T is bonded to the second portion52T of the wiring50T in the conductive section5, via the conductive bonding material82.

The configuration of the lead2T is not specifically limited. In this embodiment, as shown inFIG. 58andFIG. 59, the lead2T includes a first portion21T, a second portion22T, a third portion23T, and a fourth portion24T, each of which will be described hereunder.

The first portion21T is bonded to the second portion52T of the wiring50T. The shape of the first portion21T is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21T has a bent shape including a portion extending along the x-direction, a portion inclined with respect to the x-direction and the y-direction, and a portion extending along the y-direction. The first portion21T overlaps with the fourth face34of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the fourth face34is oriented. In the illustrated example, the first portion21T overlaps with the second portion52T, as viewed in the z-direction.

The third portion23T and the fourth portion24T are covered with the encapsulating resin7. The third portion23T is connected to the first portion21T and the fourth portion24T. The fourth portion24T is shifted in the z-direction with respect to the first portion21T, to the side to which the first face31is oriented, like the third portion23I and the fourth portion24I of the lead2I shown inFIG. 40. The end portion of the fourth portion24T is flush with the fifth face75of the resin7. In the illustrated example, the third portion23T and the fourth portion24T generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23T or fourth portion24T in the x-direction).

The second portion22T is connected to the end portion of the fourth portion24T, and corresponds to a portion of the lead2T sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22T sticks out to the opposite side of the first portion21T, in the y-direction. The second portion22T is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22T is bent, for example, in the z-direction. The second portion22T, the third portion23T, and the fourth portion24T each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22T, the third portion23T, and the fourth portion24T, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22S, the third portion23S, and the fourth portion24S, on the side of the fourth face34in the x-direction.

The lead2U is spaced apart from the plurality of leads1. The lead2U is located on the conductive section5. The lead2U is electrically connected to the conductive section5. The lead2U exemplifies a second lead in the present disclosure. The lead2U is bonded to the second portion52U of the wiring50U in the conductive section5, via the conductive bonding material82.

The configuration of the lead2U is not specifically limited. In this embodiment, as shown inFIG. 58andFIG. 59, the lead2U includes a first portion21U, a second portion22U, a third portion23U, and a fourth portion24U, each of which will be described hereunder.

The first portion21U is bonded to the second portion52U of the wiring50U. The shape of the first portion21U is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21U has a bent shape including a portion extending along the x-direction, a portion inclined with respect to the x-direction and the y-direction, and a portion extending along the y-direction. The first portion21U overlaps with the fourth face34of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the fourth face34is oriented. In the illustrated example, the first portion21U overlaps with the second portion52U, as viewed in the z-direction.

The third portion23U and the fourth portion24U are covered with the encapsulating resin7. The third portion23U is connected to the first portion21U and the fourth portion24U. The fourth portion24U is shifted in the z-direction with respect to the first portion21U. The end portion of the fourth portion24U is flush with the fifth face75of the resin7. In the illustrated example, the third portion23U and the fourth portion24U generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23U or fourth portion24U in the x-direction).

The second portion22U is connected to the end portion of the fourth portion24U, and corresponds to a portion of the lead2U sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22U sticks out to the opposite side of the first portion21U, in the y-direction. The second portion22U is used, for example, to electrically connect the semiconductor device A3to an external circuit. In the illustrated example, the second portion22U is bent, for example, in the z-direction. The second portion22U, the third portion23U, and the fourth portion24U each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22U, the third portion23U, and the fourth portion24U, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22T, the third portion23T, and the fourth portion24T, on the side of the fourth face34in the x-direction.

The semiconductor chips4A to4F, located on the plurality of leads1, each exemplify a semiconductor chip in the present disclosure. The type and the function of the semiconductor chips4A to4F are not specifically limited. In this embodiment, the semiconductor chips4A to4F are a transistor. Although six semiconductor chips4A to4F are provided in the illustrated example, the number of semiconductor chips is by no means limited.

The semiconductor chips4A to4F in the illustrated example are, for example, a transistor configured as an IGBT, like those of the semiconductor device A2.

In this embodiment, as shown inFIG. 58, three semiconductor chips4A,4B, and4C are provided on the first portion11A of the lead1A. The three semiconductor chips4A,4B, and4C are spaced apart from each other in the x-direction, and overlap with each other as viewed in the x-direction. Here, the number of semiconductor chips to be mounted on the lead1A is by no means limited. In the illustrated example, the respective collector electrodes of the semiconductor chips4A,4B, and4C are bonded to the first portion11A, via the conductive bonding material83.

The conductive bonding material83may be any material that is capable of bonding, and electrically connecting, the collector electrode CP of the semiconductor chips4A,4B, and4C, to the first portion11A. For example, silver paste, copper paste, or solder may be employed as the conductive bonding material83. The conductive bonding material83corresponds to the second conductive bonding material in the present disclosure.

In this embodiment, the semiconductor chip4D is provided on the first portion11B of the lead1B. Here, the number of semiconductor chips to be mounted on the lead1B is by no means limited. In the illustrated example, the collector electrode of the semiconductor chip4D is bonded to the first portion11B, via the conductive bonding material83.

In this embodiment, the semiconductor chip48is provided on the first portion11C of the lead1C. Here, the number of semiconductor chips to be mounted on the lead1C is by no means limited. In the illustrated example, the collector electrode of the semiconductor chip48is bonded to the first portion11C, via the conductive bonding material83.

In this embodiment, the semiconductor chip4F is provided on the first portion11D of the lead1D, Here, the number of semiconductor chips to be mounted on the lead1D is by no means limited. In the illustrated example, the collector electrode of the semiconductor chip4F is bonded to the first portion11D, via the conductive bonding material83.

The configuration of the diodes41A to41F is not specifically limited and may be, for example, similar to that of the diodes41A to41F of the semiconductor device A2.

As in the semiconductor device A2, the diode41A, the diode4B, and the diode41C are mounted on the first portion11A. The diode41D is mounted on the first portion1B. The diode41E is mounted on the first portion11C. The diode41F is mounted on the first portion11D.

The diode41A overlaps with the semiconductor chip4A, as viewed in the y-direction. The diode41B overlaps with the semiconductor chip4B, as viewed in the y-direction. The diode41C overlaps with the semiconductor chip4C, as viewed in the y-direction. The diodes41A,41B, and41C overlap with each other, as viewed in the x-direction.

The diode41D overlaps with the semiconductor chip4D, as viewed in the y-direction. The diode41E overlaps with the semiconductor chip4E, as viewed in the y-direction. The diode41F overlaps with the semiconductor chip4F, as viewed in the y-direction. The diodes41D,41E, and41F overlap with each other, as viewed in the x-direction.

The configuration of the control chips4G and4H is not specifically limited and may be, for example, similar to that of the control chips4G and4H of the semiconductor device A1.

In this embodiment, as shown inFIG. 59, the control chip4G is mounted on the first base portion55of the conductive section5. The control chip4H is mounted on the second base portion56of the conductive section5. In this embodiment, the control chip4G is bonded to the first base portion55, via the conductive bonding material84. The control chip4H is bonded to the second base portion56, via the conductive bonding material84.

The conductive bonding material84may be any material that is capable of bonding, and electrically connecting, the control chip4G to the first base portion55, and the control chip4H to the second base portion56. For example, silver paste, copper paste, or solder may be employed as the conductive bonding material84. The conductive bonding material84corresponds to the third conductive material in the present disclosure. In this embodiment, the conductive bonding material84extends outwardly from the outer periphery of the control chips4G and4H, in a plan view. A reason of such a configuration is that, for example, when the conductive bonding material84performs the bonding function by curing after the fused state, the conductive bonding material84in the fused state spreads around the control chip4G (control chip4H) as viewed in the z-direction. Therefore, in the illustrated example, the conductive bonding material84protrudes from the respective outer edges of the control chips4G and4H, as viewed in the z-direction. However, the specific shape of the conductive bonding material84is by no means limited. Here, the control chips4G and4H may be bonded to the first base portion55via an insulative bonding material, instead of the conductive bonding material84. In the illustrated example, the conductive bonding material84has an uneven outer edge, as viewed in the z-direction. Such formation of the conductive bonding material84allows the control chips4G and4H to be bonded to a region of the conductive section5more distant from the control chips4G and4H, thereby further stabilizing the adhesion of the control chips4G and4H.

The control chip4G is located between the leads2A to2U and the leads1A to1G, as viewed in the x-direction. The control chip4H is located between the leads2A to2U and the leads1A to1G, as viewed in the x-direction. The control chips4G and the control chips4H overlap with each other, as viewed in the x-direction. The control chip4G overlaps with the semiconductor chips43and4C, as viewed in the y-direction. The control chip4H overlaps with the semiconductor chips4D and4E, as viewed in the y-direction. The control chip4H overlaps with the transmission circuit chip4I and the primary-side circuit chip4J, as viewed in the y-direction. The control chip4C may overlap with the semiconductor chip4A, as viewed in the y-direction. The control chip4H may overlap with the semiconductor chip4F, as viewed in the y-direction.

The transmission circuit chip4I includes the first transmission circuit in the present disclosure. Like the transmission circuit chip4I in the semiconductor device A2, the transmission circuit chip4I has a transformer structure including at least two coils opposed to each other with a gap therebetween, to transmit electrical signals. In this embodiment, as shown inFIG. 59, the transmission circuit chip4I is, for example, mounted on the third base portion58via the conductive bonding material84. The transmission circuit chip4I is located between the control chip4H and the primary-side circuit chip4J, as viewed in the x-direction. The transmission circuit chip4I overlaps with the control chip4H, as viewed in the y-direction. Further, the transmission circuit chip4I overlaps with the first portions51I to51N (wirings50I to50N), as viewed in the y-direction. In the illustrated example, the conductive bonding material84protrudes from the outer edge of the transmission circuit chip4I, as viewed in the z-direction.

The primary-side circuit chip4J transmits command signals to the control chip4H, through the transmission circuit chip4I. In this embodiment, as shown inFIG. 59, the primary-side circuit chip4J is, for example, mounted on the third base portion58via the conductive bonding material84. The primary-side circuit chip4J is located on the side of the fifth face35in the y-direction, with respect to the transmission circuit chip4I.

The configuration of the diodes49U,49V, and49W is not specifically limited and may be, for example, similar to that of the diodes49U,49V, and49W of the semiconductor device A2.

Regarding the first wires91A to91F according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the first wires91A to91F according to the second embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment.

The first wires91A to91F are each connected to one of the semiconductor chips4A to4F and one of the plurality of leads1. The material of the first wires91A to91F is not specifically limited and, for example, aluminum (Al) or copper (Cu) may be employed. The wire diameter of the first wires91A to91F is not specifically limited and, for example, may be approximately 250 to 500 μm. The first wires91A to91F correspond to the first conductive material in the present disclosure. Here, for example leads formed of copper may be employed, in place of the first wires91A to91F.

The collector electrode of the semiconductor chip4A and the cathode electrode of the diode41A are connected to each other, via the first portion11A and the conductive bonding material83. The collector electrode CP of the semiconductor chip4B and the cathode electrode of the diode41B are connected to each other, via the first portion11A and the conductive bonding material83. The collector electrode CP of the semiconductor chip C and the cathode electrode of the diode41C are connected to each other, via the first portion11A and the conductive bonding material83.

The first wire91A has one end connected to the emitter electrode of the semiconductor chip4A, an intermediate portion connected to the anode electrode of the diode41A, and the other end connected to the fourth portion14B of the lead1B. In the illustrated example, the number of first wires91A is not specifically limited. In the illustrated example, three first wires91A are provided.

The first wire91B has one end connected to the emitter electrode of the semiconductor chip4B, an intermediate portion connected to the anode electrode of the diode41B, and the other end connected to the fourth portion14C of the lead1C. In the illustrated example, the number of first wires91B is not specifically limited. In the illustrated example, three first wires91B are provided.

The first wire91C has one end connected to the emitter electrode of the semiconductor chip4C, an intermediate portion connected to the anode electrode of the diode41C, and the other end connected to the fourth portion14D of the lead1D. In the illustrated example, the number of first wires91C is not specifically limited. In the illustrated example, three first wires91C are provided.

The first wire91D has one end connected to the emitter electrode of the semiconductor chip4D, an intermediate portion connected to the anode electrode of the diode41D, and the other end connected to the fourth portion14E of the lead1E. In the illustrated example, the number of first wires91D is not specifically limited. In the illustrated example, three first wires91D are provided.

The first wire91E has one end connected to the emitter electrode of the semiconductor chip4E, an intermediate portion connected to the anode electrode of the diode41E, and the other end connected to the fourth portion14F of the lead1F. In the illustrated example, the number of first wires91E is not specifically limited. In the illustrated example, three first wires91E are provided.

The first wire91F has one end connected to the emitter electrode of the semiconductor chip4F, an intermediate portion connected to the anode electrode of the diode41F, and the other end connected to the fourth portion14G of the lead1G. In the illustrated example, the number of first wires91F is not specifically limited. In the illustrated example, three first wires91F are provided.

Regarding the second wire92according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the second wire92according to the second embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment.

The plurality of second wires92are each connected to one of the control chips4G and4H, as shown inFIG. 58andFIG. 59. The material of the second wires92is not specifically limited and, for example, gold (Au) may be employed. The wire diameter of the second wires92is not specifically limited and, in this embodiment, finer than the first wires91A to91F. The wire diameter of the second wires92is, for example, approximately 10 μm to 50 μm. The second wires92correspond to the second conductive material in the present disclosure. In the subsequent description, the second wires92connected to the control chip4G will be referred to as second wires92G, and the second wires92connected to the control chip4H will be referred to as second wires92H.

The second wire92G is connected to the gate electrode of the semiconductor chip4A, and the second portion52aof the wiring50a. Another second wire92G is connected to the emitter electrode of the semiconductor chip4A, and the second portion52b.

The second wire92G is connected to the gate electrode of the semiconductor chip4B, and the control chip4G. Another second wire92G is connected to the emitter electrode of the semiconductor chip4E, and the control chip4G.

The second wire92G is connected to the gate electrode of the semiconductor chip4C, and the control chip4G. Another second wire92G is connected to the emitter electrode of the semiconductor chip4C, and the control chip4G.

The second wire92H is connected to the gate electrode of the semiconductor chip4D, and the control chip4H. Another second wire92H is connected to the gate electrode of the semiconductor chip4E, and the control chip4H. Another second wire92H is connected to the gate electrode of the semiconductor chip4F, and the second portion52fof the wiring50f.

As shown inFIG. 58andFIG. 59, the plurality of third wires93are connected to one of the control chips4G and4H, as in the semiconductor device A2. The material of the third wire is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

As shown inFIG. 58andFIG. 59, the plurality of fourth wires94are connected to the transmission circuit chip4I and the primary-side circuit chip4J, as in the semiconductor device A2. The material of the fourth wire94is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

As shown inFIG. 58andFIG. 59, the plurality of fifth wires95are connected to the primary-side circuit chip4J and the conductive section5, as in the semiconductor device A2. The material of the fifth wire95is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

As shown inFIG. 58andFIG. 59, the plurality of sixth wires96are connected to the control chips4G and the conductive section5, as in the semiconductor device A2. The material of the sixth wire96is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

As shown inFIG. 58andFIG. 59, the plurality of seventh wires97are connected to the control chips4H and the conductive section5, as in the semiconductor device A2. The material of the seventh wires97is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

Regarding the resin7according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the resin7according to the second embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment.

The resin7covers at least the semiconductor chips4A to4F, the control chips4G and4H, the transmission circuit chip4I, the primary-side circuit chip4J, a part of each of the plurality of leads1, and a part of each of the plurality of leads2. In this embodiment, in addition, the resin7covers the diodes41A to41F, the diodes49U,49V, and49W, the plurality of first wires91A to91F, the plurality of second wires92, the plurality of third wires93, the plurality of fourth wires94, the plurality of fifth wires95, the plurality of sixth wires96, and the plurality of seventh wires97. The material of the resin7is not specifically limited. Though not specifically limited, for example an insulative material such as an epoxy resin or silicone gel may be employed to form the resin7.

In this embodiment, the resin7includes a first face71, a second face72, a third face73, a fourth face74, a fifth face75, a sixth face76, a recess731, a recess732, a recess733, a hole741, and a hole742, which are similar to those of the semiconductor device A2.

The circuit configuration of the semiconductor device A3may be, for example, similar to that of the diodes41A to41F of the semiconductor device A2.

In this embodiment, the lead1A is the P terminal. The lead1B is the U terminal. The lead1C is the V terminal. The lead1D is the W terminal. The lead1E is the NU terminal. The lead1F is the NV terminal. The lead1G is the NW terminal. The lead2A is the VSU terminal. The lead2B is the VBU terminal. The lead2C is the VSV terminal. The lead2D is the VBV terminal. The lead2E is the VSW terminal. The lead2F is the VBW terminal. The lead2G is the first GND terminal. The lead2H is the first VCC terminal. The lead2I is the HINU terminal. The lead2J is the HINV terminal. The lead2K is the HINW terminal. The lead2L is the LINU terminal. The lead2M is the LINV terminal. The lead2N is the LINW terminal. The lead2O is the FO terminal. The lead2P is the VOT terminal. The lead2Q is the third VCC terminal. The lead2R is the third GND. The lead2S is the CIN terminal. The lead2T is the second VCC terminal. The lead2U is the second GND terminal.

This embodiment provides similar advantageous effects to those provided by the semiconductor device A2.

First Variation of Third Embodiment

Referring toFIG. 60, a first variation of the semiconductor device A3will be described. In the semiconductor device A31according to this variation, the semiconductor chips4A to4F are, for example like the semiconductor device A1, the metal-oxide-semiconductor field-effect transistor (MOSFET) formed on a silicon carbide (SiC) substrate, in other words SiC MOSFET. Here, the semiconductor chips4A to4F may be a MOSFET formed on a silicon (Si) substrate instead of the SiC substrate, and may be configured as, for example, an IGBT element. Alternatively, the semiconductor chips4A to4F may be a MOSFET containing GaN. In this variation, each of the semiconductor chips4A to4F is an N-type MOSFET. The semiconductor chips4A to4F according to this embodiment are the same MOSFET as each other.

In accordance with the configuration of the semiconductor chips4A to4F, the configuration of the plurality of leads1of the semiconductor device A31is similar to that of the semiconductor device A1. In addition, the semiconductor device A31is without the plurality of diodes41. The configuration of the remaining components is similar to that of the semiconductor device A3.

In this variation, the lead1A is the P terminal. The lead1B is the U terminal. The lead1C is the V terminal. The lead1D is the W terminal. The lead1E is the NU terminal. The lead1F is the NV terminal. The lead1G is the NW terminal. The lead2A is the VSU terminal. The lead2B is the VEU terminal. The lead2C is the VSV terminal. The lead2D is the VBV terminal. The lead2E is the VSW terminal. The lead2F is the VBW terminal. The lead2G is the first GND terminal. The lead2H is the first VCC terminal. The lead2I is the HINU terminal. The lead2J is the HINV terminal. The lead2K is the HINW terminal. The lead2L is the LINU terminal. The lead2M is the LINV terminal. The lead2N is the LINW terminal. The lead2O is the FO terminal. The lead2P is the VOT terminal. The lead2Q is the third VCC terminal. The lead2R is the third GND. The lead2S is the CIN terminal. The lead2T is the second VCC terminal. The lead2U is the second GND terminal.

This variation also provides similar advantageous effects to those provided by the semiconductor device A2and the semiconductor device A3. In addition, the semiconductor device A31can be manufactured in a smaller size, for example compared with the semiconductor device A3.

Fourth Embodiment

Referring toFIG. 61toFIG. 63, a semiconductor device according to a fourth embodiment of the present disclosure will be described. The semiconductor device A4according to this embodiment includes a plurality of leads1, a plurality of leads2, a substrate3, a plurality of semiconductor chips4, a diode41, a signal transmission element41K, a signal transmission element42K, a plurality of diodes49, bootstrap capacitors93U,93V, and93W, a conductive section5, a plurality of bonding sections6, a plurality of first wires91, a plurality of second wires92, a plurality of third wires93, and an encapsulating resin7.

The semiconductor device A4according to this embodiment includes similar elements to those of the semiconductor device A2, A3, or A31. Such elements will be given the same numeral, and a part or the whole of the description thereof may be omitted. Regarding an element on which no specific description is given, a similar configuration to that of the corresponding element of the semiconductor device A2, A3, or A31may be adopted, as appropriate.

FIG. 61is a plan view showing the semiconductor device A4.FIG. 62is an enlarged partial plan view of the semiconductor device A4.FIG. 63is a plan view showing the signal transmission element41K of the semiconductor device A4.

The shape, size, and material of the substrate3are not specifically limited. The substrate3may be configured, for example, similarly to the substrate3of the semiconductor device A31.

The conductive section5is formed on the substrate3. In this embodiment, the conductive section5is formed on the first face31of the substrate3. The conductive section5is formed of a conductive material. The conductive material to form the conductive section5is not specifically limited. Examples of the conductive material to form the conductive section5include materials containing silver (Ag), copper (Cu), or gold (Au). In the subsequent description, it will be assumed that the conductive section5contains silver. However, the conductive section5may contain copper instead of silver, or gold instead of silver or copper. Alternatively, the conductive section5may contain Ag—Pt or Ag—Pd. The forming method of the conductive section5is not limited. For example, the conductive section5may be formed by sintering a paste containing the mentioned metal. The thickness of the conductive section5is not specifically limited, but may be, for example, approximately 5 μm to 30 μm.

In this embodiment, as shown inFIG. 61andFIG. 62, the conductive section5includes wirings50A to50U, wirings50ato50l, a first base portion55, and a connecting portion57, each of which will be described hereunder.

The shape of the first base portion55is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first base portion55has a rectangular shape. In the illustrated example, the first base portion55has an elongate rectangular shape having the long sides extending along the x-direction.

The connecting portion57extends from the first base portion55in the x-direction, toward the fourth face34. The connecting portion57includes a first portion571and a second portion572.

The first portion571is located on the side of the fourth face34in the x-direction, with respect to the first base portion55. The first portion571has a strip shape extending along the y-direction. The second portion572is located on the side of the fourth face34in the x-direction, with respect to the first portion571. The second portion572has a strip shape extending along the y-direction.

The wirings50A to50U,50a, and50bare similar to the wirings50A to50U,50a, and50bof the semiconductor device A2, A3, or A31, except for differences in minor details of positional arrangement.

The wiring50cincludes a first portion51cand a second portion52c.

The first portion51cis located on the side of the fourth face34in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51cis located between the connecting portion57and the first portion51H, in the y-direction. The first portion51coverlaps with the first base portion55, as viewed in the x-direction. The shape of the first portion51cis not specifically limited. In the illustrated example, the first portion51chas a rectangular shape.

The second portion52cis located on the side of the fourth face34in the x-direction with respect to the first portion51c, and spaced therefrom. The second portion52cis located on the side of the fifth face35in the y-direction with respect to the first portion51c, and spaced therefrom. The shape of the second portion52cis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52chas a strip shape extending along the y-direction.

The wiring50cincludes a strip-shaped portion connecting the first portion51cand the second portion52c. The strip-shaped portion includes a portion extending along the x-direction and a portion extending along the y-direction.

The wiring50dincludes a first portion51dand a second portion52d.

The first portion51dis located on the side of the fourth face34in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51dis located between the first portion51cand the first portion51H, in the y-direction. The shape of the first portion51dis not specifically limited. In the illustrated example, the first portion51dhas a rectangular shape.

The second portion52dis located on the side of the fourth face34in the x-direction with respect to the first portion51d, with a spacing therefrom, and on the side of the fifth face35in the y-direction, with respect to the first portion51d. The second portion52dis located on the side of the third face33in the x-direction, with respect to the second portion52c. The shape of the second portion52dis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52dhas a strip shape extending along the y-direction.

The wiring50dincludes a strip-shaped portion connecting the first portion51dand the second portion52d. The strip-shaped portion extends along the y-direction.

The wiring50eincludes a first portion51eand a second portion52e.

The first portion51eis located on the side of the fourth face34in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51eis located between the first portion51dand the first portion51H, in the y-direction. The shape of the first portion51eis not specifically limited. In the illustrated example, the first portion51ehas a rectangular shape.

The second portion52eis located on the side of the fourth face34in the x-direction with respect to the first portion51e, with a spacing therefrom, and on the side of the fourth face34in the x-direction, with respect to the second portion52d. The second portion52eis located on the side of the third face33in the x-direction, with respect to the second portion52c. The shape of the second portion52eis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52ehas a strip shape extending along the y-direction.

The wiring50eincludes a strip-shaped portion connecting the first portion51eand the second portion52e. The strip-shaped portion extends along the x-direction.

The wiring50fincludes a first portion51fand a second portion52f. The first portion51fis located on the side of the third face33in the x-direction, with respect to the second portion52U. The second portion52fis located on the side of the fourth face34in the x-direction, and on the side of the sixth face36in the y-direction, with respect to the first portion51f.

The wiring50fincludes a strip-shaped portion connecting the first portion51fand the second portion52f. The strip-shaped portion includes a portion extending along the x-direction and a portion extending along the y-direction.

The wiring50gincludes a first portion51gand a second portion52g.

The first portion51gis located on the side of the third face33in the x-direction, with respect to the first portion51f. The second portion52gis located on the side of the sixth face36in the y-direction, with respect to the first portion51g.

The wiring50gincludes a strip-shaped portion connecting the first portion51gand the second portion52g. The strip-shaped portion extends along the y-direction.

The wiring50hincludes a first portion51hand a second portion52h.

The first portion51his located between the first portion51gand the second portion572, in the x-direction. The second portion52his located on the side of the sixth face36in the y-direction, and on the side of the third face33in the x-direction, with respect to the first portion51h.

The wiring50hincludes a strip-shaped portion connecting the first portion51hand the second portion52h. The strip-shaped portion includes a portion extending along the x-direction and a portion extending along the y-direction.

The wiring50iincludes a second portion52i. The second portion52iis located on the side of the third face33in the x-direction, with respect to the second portion52e. The second portion52ihas a strip shape extending along the y-direction. The wiring50iincludes a portion extending from the second portion52ialong the x-direction, toward the third face33.

The wiring50jincludes a first portion51jand a second portion52j.

The first portion51jis located on the side of the fourth face34in the x-direction, with respect to the first portion571. The second portion52jis located on the side of the third face33in the x-direction, with respect to the second portion572.

The wiring50jincludes a strip-shaped portion connecting the first portion51jand the second portion52j. The strip-shaped portion includes two portions extending along the y-direction and a portion extending along the x-direction.

The wiring50kincludes a first portion51kand a second portion52k.

The first portion51kis located on the side of the fourth face34in the x-direction, with respect to the first portion51K. The second portion52kis located on the side of the third face33in the x-direction, with respect to the first portion51L.

The wiring50kincludes a strip-shaped portion connecting the first portion51kand the second portion52k. The strip-shaped portion includes two portions extending obliquely and a portion extending along the x-direction.

The wiring50lincludes a first portion51land a second portion52l.

The first portion51lis located on the side of the fourth face34in the x-direction, with respect to the first portion51k. The second portion52lis located on the side of the third face33in the x-direction, with respect to the second portion52k.

The wiring50lincludes a strip-shaped portion connecting the first portion51land the second portion52l. The strip-shaped portion extends along the x-direction.

The configuration of the bonding section6according to this embodiment may be, for example, similar to that of the semiconductor device A3.

The configuration of the lead1according to this embodiment may be, for example, similar to that of the semiconductor device A31.

The configuration of the plurality of leads2according to this embodiment may be, for example, similar to that of the semiconductor device A3. It should be noted that the lead2G and the lead2H are not utilized as electrical terminals, in this embodiment.

The configuration of the semiconductor chips4A to4F may be, for example, similar to that of the semiconductor device A31.

As shown inFIG. 61andFIG. 62, the signal transmission elements41K and42K are located on the first face31of the substrate3. The signal transmission elements41K and42K are aligned in the x-direction.

The signal transmission elements41K and42K have the same configuration.FIG. 63illustrates a part of the internal configuration of the signal transmission element41K.

The signal transmission element41K includes a first die pad494on which a plurality of leads411K and412K and the primary-side circuit chip4J are mounted, a second die pad495on which the transmission circuit chip4I and the control chip4H are mounted, and an encapsulating resin496that encapsulates a part or the whole of the cited die pads.

The encapsulating resin496is, for example, formed of an epoxy resin, in a quadrate (square) plate shape. The plurality of leads411K and412K are aligned in the x-direction with a clearance between each other, along the end portions of the encapsulating resin496in the y-direction. The plurality of leads411K and412K each extend along the y-direction, and stick out from the respective side faces of the encapsulating resin496in the y-direction. Accordingly, the signal transmission element41K is configured as a small outline package (SOP). However, the signal transmission element41K may be configured as various other types of package, such as a quad flat package (QFP) or a small outline j-lead package (SOJ), without limitation to the SOP.

The first die pad494and the second die pad495are aligned in the y-direction, with a spacing therebetween. The transmission circuit chip4I is located between the primary-side circuit chip4J and the control chip4H, in the y-direction.

A plurality of pads492J and491J are provided on the surface of the primary-side circuit chip4J. The plurality of pads492J are aligned along the long side of the primary-side circuit chip4J closer to the leads412K, and connected thereto via a wire493K. The plurality of pads491J are aligned along the long side of the primary-side circuit chip4J on the opposite side of the leads412K (on the side of the transmission circuit chip4I).

A plurality of low-voltage pads492I and a plurality of high-voltage pads491I are provided on the surface of the transmission circuit chip4I. The plurality of low-voltage pads492I are aligned along the long side of the transmission circuit chip4I on the side of the primary-side circuit chip4J, and connected to the plurality of pads491J of the primary-side circuit chip4J, via a wire493J. The plurality of high-voltage pads491I are aligned along the long sides of the transmission circuit chip4I, in a central region thereof in the y-direction.

A plurality of pads492H,491H are provided on the surface of the control chip4H. The plurality of pads492H are aligned along the long side of the control chip4H closer to the transmission circuit chip4I, and connected to the high-voltage pad491I via a wire493I. The plurality of pads491H are aligned along the long side of the control chip4H on the opposite side of the transmission circuit chip4I (closer to the lead411K), and connected to the leads411K via a wire493H. Here, the configuration of the signal transmission elements41K and42K may be modified as desired, without limitation to the configuration shown inFIG. 63.

In the illustrated example, as shown inFIG. 62, the plurality of leads411K of the signal transmission element41K are conductively bonded to the second portion52j, the second portion572, the first portion51h, the first portion51g, the first portion51f, the second portion52U, the second portion52T, and the first portion51S. The plurality of leads412K of the signal transmission element41K are conductively bonded to the second portion52l, the second portion52k, the first portion51L, the first portion51M, the first portion51N, the first portion51O, the first portion51P, the first portion51Q, and the first portion51R.

In the illustrated example, as shown inFIG. 62, the plurality of leads411K of the signal transmission element42K are conductively bonded to the second portion52i, the second portion52e, the second portion52d, the second portion52c, the first portion57l, and the first portion51j. The plurality of leads412K of the signal transmission element42K are conductively bonded to the first portion51I, the first portion51J, the first portion51K, the first portion51k, and the first portion51l.

The configuration of the diodes49U,49V, and49W is not specifically limited. The diodes49U,49V, and49W may be configured, for example, similarly to those of the semiconductor device A2.

As shown inFIG. 61andFIG. 62, the bootstrap capacitor93U is conductively bonded to the wiring50A and the wiring50B. Accordingly, the bootstrap capacitor93U is connected to the lead2A, which is the VSU terminal, and the lead2B, which is the VBU terminal.

The bootstrap capacitor93V is conductively bonded to the wiring50C and the wiring50D. Accordingly, the bootstrap capacitor93V is connected to the lead2C, which is the VSV terminal, and the lead2D, which is the VBV terminal.

The bootstrap capacitor93W is conductively bonded to the wiring50E and the wiring50F. Accordingly, the bootstrap capacitor93W is connected to the lead2E, which is the VSW terminal, and the lead2F, which is the VBW terminal.

The configuration of the first wires91A to91according to this embodiment is not specifically limited. The first wires91A to91may be configured, for example, similarly to those of the semiconductor device A31.

The plurality of second wires92include second wires92G connected to the control chip4G, and second wires92H connected to the control chip4H.

The second wire92G is connected to the gate electrode of the semiconductor chip4A, and the second portion52aof the wiring50a. Another second wire92G is connected to the emitter electrode of the semiconductor chip4A, and the second portion52b.

The second wire92G is connected to the gate electrode of the semiconductor chip4B, and the control chip4G. Another second wire92G is connected to the emitter electrode of the semiconductor chip4B, and the control chip4G.

The second wire92G is connected to the gate electrode of the semiconductor chip4C, and the control chip4G. Another second wire92G is connected to the emitter electrode of the semiconductor chip4C, and the control chip4G.

The second wire92H is connected to the gate electrode of the semiconductor chip4D, and the second portion52hof the wiring50h. Another second wire92H is connected to the gate electrode of the semiconductor chip4E, and the second portion52gof the wiring50g. Another second wire92H is connected to the gate electrode of the semiconductor chip4F, and the second portion52fof the wiring50f.

The plurality of third wires93are connected to the control chip4G. The material of the third wire93is not specifically limited and, for example, a material similar to that of the second wire92may be adopted.

The resin7according to this embodiment may be configured, for example, similarly to the resin7of the semiconductor device A31.

In this embodiment, the lead1A is the P terminal. The lead1B is the U terminal. The lead1C is the V terminal. The lead1D is the W terminal. The lead1E is the NU terminal. The lead1F is the NV terminal. The lead1G is the NW terminal. The lead2A is the VSU terminal. The lead2B is the VBU terminal. The lead2C is the VSV terminal. The lead2D is the VBV terminal. The lead2E is the VSW terminal. The lead2F is the VBW terminal. The lead2I is the HINU terminal. The lead2J is the HINU terminal. The lead2K is the HINW terminal. The lead2L is the LINU terminal. The lead2M is the LINV terminal. The lead2N is the LINW terminal. The lead2O is the FO terminal. The lead2P is the VOT terminal. The lead2Q is the third VCC terminal. The lead2R is the third GND. The lead2S is the CIN terminal. The lead2T is the second VCC terminal. The lead2U is the second GND terminal.

This embodiment provides similar advantageous effects to those provided by the semiconductor devices A2, A3, and A31. In addition, the presence of the signal transmission element41K and the signal transmission element42K, each including the control chip4H, the transmission circuit chip4I, and the primary-side circuit chip4J, further ensures the protection of the control chip4H, the transmission circuit chip4I, and the primary-side circuit chip4J.

First Variation of Fourth Embodiment

FIG. 64illustrates a first variation of the semiconductor device A4. The semiconductor device A41according to this variation is different from the semiconductor device A4in the configuration of the signal transmission element41K and the signal transmission element42K.

The number of leads412K on the primary side and the number of leads411K on the secondary side, of the signal transmission elements41K and42K may each be changed as desired. In an example, as shown inFIG. 64, the number of leads412K on the primary side and the number of leads411K on the secondary side, of the signal transmission elements41K and42K, may each be fewer than the number of leads412K on the primary side and the number of leads411K on the secondary side, of the signal transmission elements41K and42K according to the fourth embodiment. InFIG. 64, the number of leads412K of the signal transmission elements41K and42K is equal to the number of wirings connected to the leads412K. Likewise, the number of leads411K on the secondary side of the signal transmission elements41K and42K is equal to the number of wirings connected to the leads411K.

Although the signal transmission elements41K and42K are independently provided in the fourth embodiment, the signal transmission elements41K and42K may be integrated in a single chip. In an example, as shown inFIG. 65, a signal transmission element43K includes a primary-side circuit chip43J, a transmission circuit chip43I, and a control chip43H. The primary-side circuit chip43J includes the primary-side circuit chip4J of the signal transmission elements41K and42K according to the fourth embodiment. The transmission circuit chip43I includes the transmission circuit chip4I of the signal transmission elements41K and42K according to the fourth embodiment. The control chip43H includes the control chip4H of the signal transmission elements41K and42K according to the fourth embodiment.

In the signal transmission element43K, the primary-side circuit chip4J of the signal transmission elements41K and42K may be provided in separate chips, or the transmission circuit chip4I of the signal transmission elements41K and42K may be provided in separate chips. Further, the wirings50k,50l, and50jmay be excluded from the signal transmission element43K shown inFIG. 65. In the connecting portion57, the part connected to one of the two secondary-side leads411K may be excluded.

Fifth Embodiment

Referring toFIG. 66andFIG. 67, a semiconductor device according to a fifth embodiment of the present disclosure will be described. The semiconductor device A5according to this embodiment includes a plurality of leads1, a plurality of leads2, a substrate3, a plurality of semiconductor chips4, a diode41, a signal transmission element41K, a signal transmission element42K, a plurality of diodes49, bootstrap capacitors93U,93V, and93W, a conductive section5, a plurality of bonding sections6, a plurality of first wires91, a plurality of second wires92, a plurality of third wires93, and an encapsulating resin7.

The semiconductor device A5according to this embodiment includes similar elements to those of the semiconductor device A4according to the fourth embodiment. Such elements will be given the same numeral, and a part or the whole of the description thereof may be omitted. Regarding an element on which no specific description is given, a similar configuration to that of the corresponding element of the semiconductor device A4may be adopted, as appropriate.

FIG. 66is a plan view showing the semiconductor device A5.FIG. 67is an enlarged partial plan view of the semiconductor device A5.

The shape, size, and material of the substrate3are not specifically limited. The substrate3may be configured, for example, similarly to that of the semiconductor device A31.

The conductive section5is formed on the substrate3. In this embodiment, the conductive section5is formed on the first face31of the substrate3. The conductive section5is formed of a conductive material. The conductive material to form the conductive section5is not specifically limited. Examples of the conductive material to form the conductive section5include materials containing silver (Ag), copper (Cu), or gold (Au). In the subsequent description, it will be assumed that the conductive section5contains silver. However, the conductive section5may contain copper instead of silver, or gold instead of silver or copper. Alternatively, the conductive section5may contain Ag—Pt or Ag—Pd. The forming method of the conductive section5is not limited. For example, the conductive section5may be formed by sintering a paste containing the mentioned metal. The thickness of the conductive section5is not specifically limited, but may be, for example, approximately 5 μm to 30 μm.

In this embodiment, as shown inFIG. 66andFIG. 67, the conductive section5includes wirings50A to50U, wirings50ato50l, a first base portion55, and a connecting portion57, each of which will be described hereunder.

The shape of the first base portion55is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first base portion55has a rectangular shape. In the illustrated example, the first base portion55has an elongate rectangular shape, having the long sides extending along the x-direction.

The connecting portion57extends from the first base portion55in the x-direction, toward the fourth face34. The connecting portion57includes a first portion571and a second portion572.

The first portion571is located on the side of the fourth face34in the x-direction, with respect to the first base portion55. The first portion571has a strip shape extending along the y-direction. The second portion572is located on the side of the fourth face34in the x-direction, with respect to the first portion571. The second portion572has a strip shape extending along the y-direction.

Regarding the wirings50A to50U and50ato50l, mainly the location of the wiring50S, the wiring50T, and the wiring50U is different from the semiconductor device A4.

In this embodiment, as shown inFIG. 67, a second portion52A and a second portion523are aligned along the third face33, in the y-direction. A second portion52C, a second portion52D, a second portion52E, and a second portion52F are aligned along the fifth face35, in the x-direction. A second portion52I, a second portion52J, a second portion52K, a second portion52L, a second portion52M, a second portion52N, a second portion52O, and a second portion52P are aligned along the fifth face35, in the x-direction. In addition, a second portion52Q and a second portion52R are aligned along the fourth face34, in the y-direction.

A second portion52S, a second portion52T, and a second portion52U are located between the second portion52F and the second portion52I in the x-direction, and aligned along the fifth face35, in the x-direction. The second portion52S is located on the side of the fourth face34in the x-direction, with respect to the second portion52T. The second portion52T is located on the side of the fourth face34in the x-direction, with respect to the second portion52U.

The first portion51S is located on the side of the sixth face36in the y-direction, with respect to the second portion52S. In the illustrated example, a part of the first portion51S overlaps with the first base portion55, as viewed in the x-direction.

The wiring50T according to this embodiment further includes a third portion53T. The third portion53T is located on the side of the fourth face34in the x-direction, with respect to the first portion51T. The third portion53T is located between the first portion51S and the first portion51e, in the x-direction. The third portion53T has, for example, a strip shape extending along the y-direction. The third wire93is connected to the first portion51T.

The wiring50U is connected to the first base portion55.

The wiring50iincludes a first portion51iand a second portion52i. The first portion51iis located on the side of the fourth face34in the x-direction, with respect to the first portion571. The first portion51I has, for example, a strip shape extending along the y-direction. The second portion52iis located on the side of the third face33in the x-direction, with respect to the second portion572. The second portion52ihas, for example, a strip shape extending along the y-direction.

The wiring50jincludes a first portion51jand a second portion52j. The first portion51jis located on the side of the fourth face34in the x-direction, with respect to the first portion51i. The second portion52jis located on the side of the third face33in the x-direction, with respect to the second portion52i.

The configuration of the bonding section6according to this embodiment may be, for example, similar to that of the semiconductor device A4.

The configuration of the leads1according to this embodiment may be, for example, similar to that of the semiconductor device A4.

Regarding the plurality of leads2, mainly the location of the leads2S,2T, and2U is different from the semiconductor device A4. In this embodiment, the leads2S,2T, and2U are located between the lead2F and the lead2I, in the x-direction. The lead2S is located on the side of the fourth face34in the x-direction, with respect to the lead2T. The lead2T is located on the side of the fourth face34in the x-direction, with respect to the lead2U. A recess733of the resin7is located between the lead2F and the lead2U in the x-direction. In this embodiment, the lead2G and the lead2H are not provided.

The configuration of the semiconductor chips4A to4F is not specifically limited, and may be, for example, similar to that of the semiconductor chips4A to4F of the semiconductor device A4.

The configuration of the signal transmission elements41K and42K is not specifically limited, and may be, for example, similar to that of the signal transmission elements41K and42K of the semiconductor device A4.

The configuration of the diodes49U,49V, and49W is not specifically limited, and may be, for example, similar to that of the diodes49U,49V, and49W of the semiconductor device A4.

The configuration of the bootstrap capacitors93U,93V, and93W is not specifically limited, and may be, for example, similar to that of the bootstrap capacitors93U,93V, and93W of the semiconductor device A4.

The bootstrap capacitor93V is conductively bonded to the wiring50C and the wiring50D. Accordingly, the bootstrap capacitor93V is connected to the lead2C which is the VSV terminal, and the lead2D which is the VBV terminal.

The bootstrap capacitor93W is conductively bonded to the wiring50E and the wiring50F. Accordingly, the bootstrap capacitor93W is connected to the lead2E which is the VSW terminal, and the lead2F which is the VBW terminal.

The configuration of the first wires91A to91F is not specifically limited, and may be, for example, similar to that of the first wires91A to91F of the semiconductor device A4.

The configuration of the plurality of second wires92is not specifically limited and may be, for example, similar to that of the second wires92of the semiconductor device A4.

The configuration of the plurality of third wires93is not specifically limited and may be, for example, similar to that of the third wires93of the semiconductor device A4.

The resin7according to this embodiment may be configured, for example, similarly to the resin7of the semiconductor device A4.

In this embodiment, the lead1A is the P terminal. The lead1B is the U terminal. The lead1C is the V terminal. The lead1D is the W terminal. The lead1E is the NU terminal. The lead1F is the NV terminal. The lead1G is the NW terminal. The lead2A is the VSU terminal. The lead2B is the VBU terminal. The lead2C is the VSV terminal. The lead2D is the VBV terminal. The lead2E is the VSW terminal. The lead2F is the VBW terminal. The lead2I is the HINU terminal. The lead2J is the HINV terminal. The lead2K is the HINW terminal. The lead2L is the LINU terminal. The lead2M is the LINV terminal. The lead2N is the LINW terminal. The lead2O is the FO terminal. The lead2P is the VOT terminal. The lead2Q is the third VCC terminal. The lead2R is the third GND. The lead2S is the CIN terminal. The lead2T is the second VCC terminal. The lead2U is the second GND terminal.

This embodiment provides similar advantageous effects to those provided by the semiconductor device A4. In the semiconductor device A5, the leads2A to2F and2S to2U connected to the control chip4G, and the leads2I to2R connected to the signal transmission elements41K and42K are separately located on the respective sides in the x-direction. Therefore, increasing the distance between the lead2S and the lead2I further ensures the insulation between the side associated with the control chip4G and the side associated with the signal transmission elements41K and42K. Such a configuration is advantageous for suppressing an increase in size of the semiconductor device A5, while securing an improved insulation effect.

Sixth Embodiment

Referring toFIG. 68andFIG. 69, a semiconductor device according to a fifth embodiment of the present disclosure will be described. The semiconductor device A6according to this embodiment includes a plurality of leads1, a plurality of leads2, a substrate3, a plurality of semiconductor chips4, a diode41, a plurality of control chips4, a transmission circuit chip4I, a primary-side circuit chip4J, a plurality of diodes49, a conductive section5, a plurality of bonding sections6, a plurality of first wires91, a plurality of second wires92, a plurality of third wires93, a plurality of fourth wires94, a plurality of fifth wires95, a plurality of sixth wires96, a plurality of seventh wires97, and an encapsulating resin7.

The semiconductor device A6according to this embodiment includes similar elements to those of the semiconductor device A3according to the third embodiment. Such elements will be given the same numeral, and a part or the whole of the description thereof may be omitted. Regarding an element on which no specific description is given, a similar configuration to that of the corresponding element of the semiconductor device A3may be adopted, as appropriate.

FIG. 68is a plan view showing the semiconductor device A6.FIG. 69is an enlarged partial plan view of the semiconductor device A6.

The shape, size, and material of the substrate3are not specifically limited. The substrate3may be configured, for example, similarly to the substrate3of the semiconductor device A3.

The conductive section5is formed on the substrate3. In this embodiment, the conductive section5is formed on the first face31of the substrate3. The conductive section5is formed of a conductive material. The conductive material to form the conductive section5is not specifically limited. Examples of the conductive material to form the conductive section5include materials containing silver (Ag), copper (Cu), or gold (Au). In the subsequent description, it will be assumed that the conductive section5contains silver. However, the conductive section5may contain copper instead of silver, or gold instead of silver or copper. Alternatively, the conductive section5may contain Ag—Pt or Ag—Pd. The forming method of the conductive section5is not limited. For example, the conductive section5may be formed by sintering a paste containing the mentioned metal. The thickness of the conductive section5is not specifically limited, but may be, for example, approximately 5 μm to 30 μm.

In this embodiment, as shown inFIG. 68andFIG. 69, the conductive section5includes wirings50A to50U, wirings50ato50f, a first base portion55, a second base portion56, and a third base portion58, each of which will be described hereunder.

The shape of the first base portion55is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first base portion55has a rectangular shape. In the illustrated example, the first base portion55has an elongate rectangular shape, having the long sides extending along the x-direction.

The shape of the second base portion56is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second base portion56has a rectangular shape. In the illustrated example, the second base portion56has an elongate rectangular shape, having the long sides extending along the x-direction.

The second base portion56is located on the side of the fourth face34in the x-direction, with respect to the first base portion55.

The connecting portion57is interposed between the first base portion55and the second base portion56and, in the illustrated example, connecting the first base portion55and the second base portion56. In the illustrated example, the connecting portion57is located between the first base portion55and the second base portion56, as viewed in the y-direction. The shape of the connecting portion57is not specifically limited.

In the illustrated example, the respective edges of the first base portion55, the second base portion56, and the connecting portion57on the side of the sixth face36in the y-direction are located generally at the same position in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located exactly at the same position, or being deviated by within ±5% of the characteristic size (size of the first base portion55or second base portion56in the y-direction).

The shape of the third base portion58is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. The third base portion58is located on the side of the fifth face35in the y-direction, with respect to the second base portion56. The third base portion58overlaps with the second base portion56, as viewed in the y-direction.

In this embodiment, the second portion52S and the second portion52T are aligned along the third face33, in the y-direction. The second portion52S is located on the side of the sixth face36in the y-direction, with respect to the second portion52T.

The second portion52G and the second portion52H are aligned along the fifth face35, in the x-direction. The second portion52G is located on the side of the third face33in the x-direction, with respect to the second portion52H.

The second portion52A and the second portion523are aligned along the fifth face35, in the x-direction. The second portion52A is located on the side of the fourth face34in the x-direction, with respect to the second portion52H. The second portion523is located on the side of the fourth face34in the x-direction, with respect to the second portion52A.

The second portion52C and the second portion52D are aligned along the fifth face35, in the x-direction. The second portion52C is located on the side of the fourth face34in the x-direction, with respect to the second portion523. The second portion52D is located on the side of the fourth face34in the x-direction, with respect to the second portion52C.

The second portion52E and the second portion52F are aligned along the fifth face35, in the x-direction. The second portion52E is located on the side of the fourth face34in the x-direction, with respect to the second portion52D. The second portion52F is located on the side of the fourth face34in the x-direction, with respect to the second portion52E.

The second portion52I to second portion52O are aligned along the fifth face35, in the x-direction. The second portion52I to second portion52O are located on the side of the fourth face34in the x-direction, with respect to the first portion51F. The second portion52I to second portion52O are aligned in this order in the x-direction, from the side of the third face33toward the fourth face34.

The second portion52P, the second portion52Q, and the second portion52R are aligned along the fourth face34, in the y-direction. The second portion52P, the second portion52Q, and the second portion52R are located on the side of the sixth face36in the y-direction, with respect to the second portion52O. The second portion52P, the second portion52Q, and the second portion52R are aligned in this order in the y-direction, from the side of the fifth face35toward the sixth face36.

The wiring50G is connected to the first base portion55.

The first portion51H and the first portion51A are aligned in the y-direction, and located on the side of the third face33in the x-direction, with respect to the first base portion55.

The first portion51B to first portion51F are aligned in the x-direction, and located on the side of the fifth face35in the y-direction, with respect to the first base portion55.

The first portion51c, the first portion51d, and the first portion51eare aligned in the y-direction, and located on the side of the fourth face34in the x-direction, with respect to the first base portion55.

The first portion51I to first portion51O are aligned in the x-direction, and located on the side of the fifth face35in the y-direction, with respect to the third base portion58.

The first portion51P and the first portion51Q are aligned in the y-direction, and located on the side of the fourth face34in the x-direction, with respect to the third base portion58.

The wiring50R is connected to the third base portion58.

The second portion52c, the second portion52d, and the second portion52eare aligned in the y-direction, and located on the side of the third face33in the x-direction, with respect to the second base portion56.

The first portion51S and the first portion51T are aligned in the y-direction, and located on the side of the fourth face34in the x-direction, with respect to the second base portion56. The wiring50S includes a strip-shaped portion connecting the first portion51S and the second portion52S. The strip-shaped portion is routed across a region on the side of the sixth face36in the y-direction, with respect to the first base portion55, the second base portion56, and the connecting portion57. The wiring50T includes a strip-shaped portion connecting the first portion51T and the second portion52T. The strip-shaped portion is routed across the region on the side of the sixth face36in the y-direction, with respect to the first base portion55, the second base portion56, and the connecting portion57.

The plurality of bonding sections6are formed on the substrate3. In this embodiment, the plurality of bonding sections6are formed on the first face31of the substrate3. The bonding section6is formed of, for example, a conductive material. The conductive material to form the bonding section6is not specifically limited. Examples of the conductive material to form the bonding section6include materials containing silver (Ag), copper (Cu), or gold (Au). In the subsequent description, it will be assumed that the bonding section6contains silver. The bonding section6according to this embodiment contains the same conductive material as that employed to form the conductive section5. However, the bonding section6may contain copper instead of silver, or gold instead of silver or copper. Alternatively, the conductive section5may contain Ag—Pt or Ag—Pd. The forming method of the bonding section6is not limited. For example, the bonding section6may be formed, like the conductive section5, by sintering a paste containing the mentioned metal. The thickness of the bonding section6is not specifically limited, but may be, for example, approximately 5 μm to 30 μm.

In this embodiment, as shown inFIG. 68, the plurality of bonding sections6include bonding sections6A to6D. The configuration of the bonding sections6A to6D is, for example, similar to that of the bonding sections6A to6D of the semiconductor device A3.

The plurality of leads1contain a metal, and have higher heat dissipation characteristics, for example than the substrate3. The metal to form the lead1is not specifically limited, and may be, for example, copper (Cu), aluminum, iron (Fe), oxygen-free copper, or an alloy of the cited metals (e.g., Cu—Sn alloy, Cu—Zr alloy, and Cu—Fe alloy). The plurality of leads1may be plated with nickel (Ni). Examples of the forming method of the plurality of leads1include pressing a metal plate with a die, and patterning a metal plate by etching, without limitation thereto. The thickness of the lead1is not specifically limited, but may be, for example, approximately 0.4 mm to 0.8 mm.

The plurality of leads1include a plurality of leads1A to1G, as shown inFIG. 68. The plurality of leads1A to1G constitute conduction paths to the semiconductor chips4A to4F. The configuration of the plurality of leads1A to1G is, for example, similar to that of the leads1A to1G of the semiconductor device A3.

When no specific description is given on an element of the lead2according to this embodiment, such element may be configured similarly to the corresponding element of the semiconductor device A3, as appropriate.

The plurality of leads2contain a metal, and have higher heat dissipation characteristics, for example than the substrate3. The metal to form the lead2is not specifically limited, and may be, for example, copper (Cu), aluminum, iron (Fe), oxygen-free copper, or an alloy of the cited metals (e.g., Cu—Sn alloy, Cu—Zr alloy, and Cu—Fe alloy). The plurality of leads2may be plated with nickel (Ni). Examples of the forming method of the plurality of leads2include pressing a metal plate with a die, and patterning a metal plate by etching, without limitation thereto. The thickness of the lead2is not specifically limited, but may be, for example, approximately 0.4 mm to 0.8 mm. The plurality of leads2are located so as to overlap with the second region30B of the substrate3, as viewed in the z-direction.

In this embodiment, the plurality of leads2include a plurality of leads2A to2U, as shown inFIG. 68andFIG. 69. The plurality of leads2A to2H, and2S to2U respectively constitute conduction paths to the control chips4G and4H. The plurality of leads2I to2R constitute conduction paths to the primary-side circuit chip4J.

The first portion21S is conductively bonded to the second portion52S. The first portion21T is conductively bonded to the second portion52T. The lead2S and the lead2T overlap with the third face33, as viewed in the z-direction.

The first portion21G is conductively bonded to the second portion52G. The first portion21H is conductively bonded to the second portion52H. The first portion21A is conductively bonded to the second portion52A. The first portion21B is conductively bonded to the second portion52B. The first portion21C is conductively bonded to the second portion52C. The first portion21D is conductively bonded to the second portion52D. The first portion21E is conductively bonded to the second portion52E. The first portion21F is conductively bonded to the second portion52F. The leads2G,2H,2A,2B,2C,2D,2E, and2F overlap with the fifth face35, as viewed in the z-direction. The leads2G,2H,2A,2B,2C,2D,2E, and2F are aligned in this order in the x-direction, from the side of the third face33toward the fourth face34.

The first portion21I is conductively bonded to the second portion52I. The first portion21J is conductively bonded to the second portion52J. The first portion21K is conductively bonded to the second portion52K. The first portion21L is conductively bonded to the second portion52L. The first portion21M is conductively bonded to the second portion52M. The first portion21N is conductively bonded to the second portion52N. The first portion21O is conductively bonded to the second portion52O. The leads2I,2J,2K,2L,2M,2N, and2O overlap with the fifth face35, as viewed in the z-direction. The leads2I,2J,2K,2L,2M,2N, and2O are aligned in this order in the x-direction, from the side of the third face33toward the fourth face34.

The first portion21P is conductively bonded to the second portion52P. The first portion21Q is conductively bonded to the second portion52Q. The first portion21R is conductively bonded to the second portion52R. The leads2P,2Q, and2R overlap with the fourth face34, as viewed in the z-direction. The leads2P,2Q, and2R are aligned in this order in the y-direction, from the side of the fifth face35toward the sixth face36.

The configuration of the semiconductor chips4A to4F is not specifically limited, and may be, for example, similar to that of the semiconductor chips4A to4F of the semiconductor device A3.

The configuration of the diodes41A to41F is not specifically limited, and may be, for example, similar to that of the diodes41A to41F of the semiconductor device A3.

The configuration of the control chips4G and4H is not specifically limited, and may be, for example, similar to that of the control chips4G and4H of the semiconductor device A3.

The configuration of the transmission circuit chip4I is not specifically limited, and may be, for example, similar to that of the transmission circuit chip4I of the semiconductor device A3.

The configuration of the primary-side circuit chip4J is not specifically limited, and may be, for example, similar to that of the primary-side circuit chip4J of the semiconductor device A3.

The configuration of the diodes49U,49V, and49W is not specifically limited, and may be, for example, similar to that of the diodes49U,49V, and49W of the semiconductor device A3.

The configuration of the first wires91A to91F is not specifically limited, and may be, for example, similar to that of the first wires91A to91F of the semiconductor device A3.

The configuration of the plurality of second wires92is not specifically limited and may be, for example, similar to that of the plurality of second wires92of the semiconductor device A3.

The configuration of the plurality of third wires93is not specifically limited and may be, for example, similar to that of the third wires93of the semiconductor device A3.

The configuration of the plurality of fourth wires94is not specifically limited and may be, for example, similar to that of the fourth wires94of the semiconductor device A3.

The configuration of the plurality of fifth wires95is not specifically limited and may be, for example, similar to that of the fifth wires95of the semiconductor device A3.

The configuration of the plurality of sixth wires96is not specifically limited and may be, for example, similar to that of the sixth wires96of the semiconductor device A3.

The configuration of the plurality of seventh wires97is not specifically limited and may be, for example, similar to that of the seventh wires97of the semiconductor device A3.

The configuration of the resin7is not specifically limited and may be, for example, similar to that of the resin7of the semiconductor device A3.

The circuit configuration of the semiconductor device A6may be, for example, similar to that of the semiconductor device A3.

In this embodiment, the lead1A is the P terminal. The lead1B is the U terminal. The lead1C is the V terminal. The lead1D is the W terminal. The lead1E is the NU terminal. The lead1F is the NV terminal. The lead1G is the NW terminal. The lead2A is the VSU terminal. The lead2B is the VBU terminal. The lead2C is the VSV terminal. The lead2D is the VBV terminal. The lead2E is the VSW terminal. The lead2F is the VBW terminal. The lead2G is the first GND terminal. The lead2H is the first VCC terminal. The lead2I is the HINU terminal. The lead2J is the HINV terminal. The lead2K is the HINW terminal. The lead2L is the LINU terminal. The lead2M is the LINV terminal. The lead2N is the LINW terminal. The lead2O is the FO terminal. The lead2P is the VOT terminal. The lead2Q is the third VCC terminal. The lead2R is the third GND. The lead2S is the CIN terminal. The lead2T is the second VCC terminal. The lead2U is the second GND terminal.

This embodiment provides similar advantageous effects to those provided by the semiconductor device A3. In the semiconductor device A6, in addition, the plurality of leads2A to2H,2S, and2T connected to the control chips4G and4H, and the leads2I to2R connected to the primary-side circuit chip4J are separately located on the respective sides in the x-direction. Therefore, increasing the distance between the lead2F and the lead2I further ensures the insulation between the side associated with the control chips4G and4H, and the side associated with the primary-side circuit chip4J. Such a configuration is advantageous for suppressing an increase in size of the semiconductor device A6, while securing an improved insulation effect.

Seventh Embodiment

Referring toFIG. 70toFIG. 72, a semiconductor device according to a seventh embodiment of the present disclosure will be described. The semiconductor device A7according to this embodiment includes a plurality of leads1, a plurality of leads2, a substrate3, a plurality of semiconductor chips4, a diode41, a plurality of control chips4, a transmission circuit chip4I, a primary-side circuit chip4J, a plurality of diodes49, a conductive section5, a plurality of bonding sections6, a plurality of first wires91, a plurality of second wires92, a plurality of third wires93, a plurality of fourth wires94, a plurality of fifth wires95, a plurality of sixth wires96, a plurality of seventh wires97, and an encapsulating resin7.

The semiconductor device A7according to this embodiment includes similar elements to those of the semiconductor device A3according to the third embodiment. Such elements will be given the same numeral, and a part or the whole of the description thereof may be omitted. Regarding an element on which no specific description is given, a similar configuration to that of the corresponding element of the semiconductor device A3may be adopted, as appropriate.

FIG. 70is a plan view showing the semiconductor device A7.FIG. 71andFIG. 72are enlarged partial plan views of the semiconductor device A7.

The shape, size, and material of the substrate3are not specifically limited. The substrate3may be configured, for example, similarly to the substrate3of the semiconductor device A3.

Regarding the conductive section5according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the conductive section5according to the third embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment. Regarding a portion or structure on which no specific description is given, a similar configuration to that of the conductive section5of the semiconductor device A3may be adopted, as appropriate.

The conductive section5is formed on the substrate3. In this embodiment, the conductive section5is formed on the first face31of the substrate3. The conductive section5is formed of a conductive material. The conductive material to form the conductive section5is not specifically limited. Examples of the conductive material to form the conductive section5include materials containing silver (Ag), copper (Cu), or gold (Au). In the subsequent description, it will be assumed that the conductive section5contains silver. However, the conductive section5may contain copper instead of silver, or gold instead of silver or copper. Alternatively, the conductive section5may contain Ag—Pt or Ag—Pd. The forming method of the conductive section5is not limited. For example, the conductive section5may be formed by sintering a paste containing the mentioned metal. The thickness of the conductive section5is not specifically limited, but may be, for example, approximately 5 μm to 30 μm.

In this embodiment, as shown inFIG. 71andFIG. 72, the conductive section5includes wirings50A to50V, wirings50ato50h, a first base portion55, a second base portion56, a connecting portion57, and a third base portion58, each of which will be described hereunder.

The shape of the first base portion55is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first base portion55has a rectangular shape. In the illustrated example, the first base portion55has an elongate rectangular shape, having the long sides extending along the x-direction.

The shape of the second base portion56is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second base portion56has a rectangular shape. In the illustrated example, the second base portion56has an elongate rectangular shape, having the long sides extending along the x-direction.

The connecting portion57is interposed between the first base portion55and the second base portion56and, in the illustrated example, connecting the first base portion55and the second base portion56. In the illustrated example, the connecting portion57is located between the first base portion55and the second base portion56, as viewed in the y-direction. The shape of the connecting portion57is not specifically limited.

In the illustrated example, the respective edges of the first base portion55, the second base portion56, and the connecting portion57on the side of the sixth face36in the y-direction, are located generally at the same position in the y-direction. Here, the expression “located generally at the same position” in the y-direction refers to, for example, being located exactly at the same position, or being deviated by within ±5% of the characteristic size (size of the first base portion55or second base portion56in the y-direction).

The shape of the third base portion58is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. The third base portion58is located on the side of the fifth face35in the y-direction, with respect to the second base portion56. The third base portion58overlaps with the second base portion56, as viewed in the y-direction.

The wiring50A includes a first portion51A and a second portion52A.

The first portion51A is located on the side of the third face33in the x-direction, and on the side of the fifth face35in the y-direction, with respect to the first base portion55. The shape of the first portion51A is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51A has a strip shape extending along the y-direction. In the illustrated example, in addition, the first portion51A is spaced apart from the first base portion55, as viewed in the x-direction.

The second portion52A is located on the side of the fifth face35in the y-direction, and on the side of the third face33in the x-direction, with respect to the first portion51A. The shape of the second portion52A is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51A has a rectangular shape.

The wiring50A includes a strip-shaped portion connecting the first portion51A and the second portion52A. The strip-shaped portion includes a portion extending from the first portion51A along the x-direction, and a portion extending obliquely toward the second portion52A.

The wiring50B includes a first portion51B and a second portion52B.

The shape of the first portion51B is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. The first portion513is located on the side of the fourth face34in the x-direction with respect to the first portion51A, and on the side of the fifth face35in the y-direction, with respect to the first base portion55. In the illustrated example, a part of the first portion51B overlaps with the first base portion55as viewed in the y-direction, and with the first portion51A, as viewed in the x-direction.

The second portion52B is located on the side of the fifth face35in the y-direction, and on the side of the third face33in the x-direction, with respect to the first portion51B. The second portion52B overlaps with the second portion52A, as viewed in the y-direction. The shape of the second portion52B is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52B has a rectangular shape.

The wiring50B includes a strip-shaped portion connecting the first portion51B and the second portion52B. The strip-shaped portion includes a portion extending from the first portion51B along the x-direction, a portion extending obliquely toward the second portion52B.

The wiring50C includes a first portion51C and a second portion52C.

The first portion51C is located on the side of the fifth face35in the y-direction, with respect to the first base portion55with a spacing therefrom, and on the side of the fourth face34in the x-direction, with respect to the first portion51B with a spacing therefrom. In the illustrated example, the first portion51C overlaps with the first base portion55, as viewed in the y-direction. The shape of the first portion51C is not specifically limited. In the illustrated example, the first portion51C has a strip shape extending along the y-direction.

The second portion52C is located on the side of the fifth face35with respect to the first portion51C, in the y-direction. The second portion52C is located on the side of the fifth face35in the y-direction, with respect to the second portion52A and the second portion52B. The shape of the second portion52C is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52C has a rectangular shape.

The wiring50C includes a strip-shaped portion connecting the first portion51C and the second portion52C. The strip-shaped portion includes a portion extending obliquely from the first portion51C, a portion extending along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52C.

The wiring50D includes a first portion51D and a second portion52D.

The shape of the first portion51D is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51D has a trapezoidal shape. The first portion51D is located on the side of the fifth face35in the y-direction, with respect to the first base portion55, and spaced therefrom. The first portion51D is located on the side of the fourth face34in the x-direction with respect to the first portion51C, and spaced therefrom. In addition, in the illustrated example, the first portion51D overlaps with the first portion51C as viewed in the x-direction, and with the first base portion55as viewed in the y-direction.

The second portion52D is located on the side of the fifth face35with respect to the first portion51D, in the y-direction. The second portion52D is located on the side of the fourth face34in the x-direction, with respect to the second portion52C. The second portion52D overlaps with the second portion52C, as viewed in the x-direction. The shape of the second portion52D is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52E has a rectangular shape.

The wiring50D includes a strip-shaped portion connecting the first portion51D and the second portion52D. The strip-shaped portion includes a portion extending obliquely from the first portion51D, a portion extending along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52D.

The wiring50E includes a first portion51E and a second portion52E.

The first portion51E is located on the side of the fifth face35in the y-direction, with respect to the first base portion55with a spacing therefrom, and on the side of the fourth face34in the x-direction, with respect to the first portion51D with a spacing therefrom. In the illustrated example, the first portion51E overlaps with the first base portion55, as viewed in the y-direction. The shape of the first portion51E is not specifically limited. In the illustrated example, the first portion51E has a strip shape extending along the y-direction.

The second portion52E is located on the side of the fifth face35with respect to the first portion51E, in the y-direction. The second portion52E is located on the side of the fourth face34with respect to the second portion52D, in the x-direction. The second portion52E overlaps with the second portion52D, as viewed in the x-direction. The shape of the second portion52E is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52B has a rectangular shape.

The wiring50E includes a strip-shaped portion connecting the first portion51E and the second portion52E. The strip-shaped portion includes a portion extending obliquely from the first portion51E, a portion extending along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52E.

The wiring50F includes a first portion51F and a second portion52F.

The shape of the first portion51F is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion51F has a rectangular shape. The first portion51F is located on the side of the fifth face35in the y-direction, with respect to the first base portion55, and spaced therefrom. The first portion51F is located on the side of the fourth face34in the x-direction with respect to the first portion51E, and spaced therefrom. In the illustrated example, the first portion51F overlaps with the first portion51E as viewed in the x-direction, and with the first base portion55as viewed in the y-direction.

The second portion52F is located on the side of the fifth face35with respect to the first portion51F, in the y-direction. The second portion52F is located on the side of the fourth face34in the x-direction with respect to the second portion52E, and spaced therefrom. The second portion52F overlaps with the second portion52E, as viewed in the x-direction. The shape of the second portion52F is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52F has a rectangular shape.

The wiring50F includes a strip-shaped portion connecting the first portion51F and the second portion52F. The strip-shaped portion includes a portion extending obliquely from the first portion51F, a portion extending along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52F.

The wiring50G includes a second portion52G.

The second portion52G is located on the side of the fifth face35with respect to the first base portion55, in the y-direction. The second portion52G is located on the side of the fourth face34in the x-direction with respect to the second portion52F, and spaced therefrom. The second portion52G overlaps with the second portion52F, as viewed in the x-direction. The second portion52G is spaced apart from the first base portion55, as viewed in the y-direction. The shape of the second portion52G is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52G has a rectangular shape.

The wiring50G includes a strip-shaped portion connecting the second portion52G and the first base portion55. The strip-shaped portion includes a portion extending from the first base portion55along the y-direction, a portion extending obliquely, a portion extending along the x-direction, and a portion extending obliquely toward the second portion52G.

The wiring50H includes a first portion51H and a second portion52H.

The first portion51H is located between the first base portion55and the second base portion56, as viewed in the y-direction. In the illustrated example, a part of the first portion51H overlaps with the first base portion55and the second base portion56, as viewed in the x-direction. The first portion51H overlaps with the first portion51F, as viewed in the x-direction. The shape of the first portion51H is not specifically limited. In the illustrated example, the first portion51H includes a portion extending along the x-direction, and a pair of portions extending along the y-direction toward the sixth face36, from the respective end portions of the portion extending along the x-direction.

The second portion52H is located on the side of the fifth face35in the y-direction, and on the side of the third face33in the x-direction, with respect to the first portion51H. The second portion52H is located on the side of the fourth face34in the x-direction with respect to the second portion52G. The second portion52H overlaps with the second portion52G, as viewed in the x-direction. The shape of the second portion52H is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52H has a rectangular shape.

The wiring50H includes a strip-shaped portion connecting the first portion51H and the second portion52H. The strip-shaped portion includes a portion extending obliquely from the first portion51H, and a portion extending along the x-direction toward the second portion52H.

The wiring50V includes a first portion51V and a second portion52V.

The first portion51V is located on the side of the third face33in the x-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51V overlaps with the third base portion58, as viewed in the x-direction. The shape of the first portion51V is not specifically limited. In the illustrated example, the first portion51V has a rectangular shape.

The second portion52V is located on the side of the fifth face35with respect to the first portion51V, in the y-direction. The second portion52V is located on the side of the fourth face34in the x-direction with respect to the second portion52H, and spaced therefrom. The second portion52V is spaced apart from the third base portion58, as viewed in the x-direction. The second portion52V overlaps with the second portion52H, as viewed in the x-direction. The shape of the second portion52V is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52V has a rectangular shape.

The wiring50V includes a strip-shaped portion connecting the first portion51V and the second portion52V. The strip-shaped portion includes a portion extending from the first portion51V along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52V.

The wiring50I includes a first portion51I and a second portion52I.

The first portion51I is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51I overlaps with the third base portion58, as viewed in the y-direction. The shape of the first portion51I is not specifically limited. In the illustrated example, the first portion51I has a rectangular shape.

The second portion52I is located on the side of the fifth face35with respect to the first portion51I, in the y-direction. The second portion52I is located on the side of the fourth face34in the x-direction with respect to the second portion52V, and spaced therefrom. The second portion52I is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52I overlaps with the second portion52V, as viewed in the x-direction. The shape of the second portion52I is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52I has a rectangular shape.

The wiring50I includes a strip-shaped portion connecting the first portion51I and the second portion52I. The strip-shaped portion includes a portion extending from the first portion51I along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52I.

The wiring50J includes a first portion51J and a second portion52J.

The first portion51J is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. The first portion51J is located on the side of the fourth face34in the x-direction with respect to the first portion51I, and spaced therefrom. In the illustrated example, the first portion51J overlaps with the first portion51I as viewed in the x-direction, and with the third base portion58as viewed in the y-direction. The shape of the first portion51J is not specifically limited. In the illustrated example, the first portion51J has a rectangular shape.

The second portion52J is located on the side of the fifth face35with respect to the first portion51J, in the y-direction. The second portion52J is located on the side of the fourth face34in the x-direction with respect to the second portion52I, and spaced therefrom. The second portion52J overlaps with the second portion52I, as viewed in the x-direction. The shape of the second portion52J is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52J has a rectangular shape.

The wiring50J includes a strip-shaped portion connecting the first portion51J and the second portion52J. The strip-shaped portion includes a portion extending obliquely from the first portion51J, a portion extending along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52J.

The wiring50K includes a first portion51K and a second portion52K.

The first portion51K is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51K overlaps with the third base portion58, as viewed in the y-direction. The first portion51K is located on the side of the fourth face34in the x-direction with respect to the first portion51J, and spaced therefrom. The first portion51K overlaps with the first portion51J, as viewed in the x-direction. The shape of the first portion51K is not specifically limited. In the illustrated example, the first portion51K has a rectangular shape.

The second portion52K is located on the side of the fifth face35with respect to the first portion51K, in the y-direction. The second portion52K is located on the side of the fourth face34in the x-direction with respect to the second portion52J, and spaced therefrom. The second portion52K is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52K overlaps with the second portion52J, as viewed in the x-direction. The shape of the second portion52K is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52K has a rectangular shape.

The wiring50K includes a strip-shaped portion connecting the first portion51K and the second portion52K. The strip-shaped portion includes a portion extending obliquely from the first portion51K, a portion extending along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52K.

The wiring50L includes a first portion51L and a second portion52L.

The first portion51L is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51L overlaps with the third base portion58, as viewed in the y-direction. The first portion51L is located on the side of the fourth face34in the x-direction with respect to the first portion51K, and spaced therefrom. The first portion51L overlaps with the first portion51K, as viewed in the x-direction. The shape of the first portion51L is not specifically limited. In the illustrated example, the first portion51L has a rectangular shape.

The second portion52L is located on the side of the fifth face35with respect to the first portion51L, in the y-direction. The second portion52L is located on the side of the fourth face34in the x-direction with respect to the second portion52K, and spaced therefrom. The second portion52L overlaps with the third base portion58, as viewed in the y-direction. The second portion52L overlaps with the second portion52K, as viewed in the x-direction. The shape of the second portion52L is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52L has a rectangular shape.

The wiring50L includes a strip-shaped portion connecting the first portion51L and the second portion52L. The strip-shaped portion includes a portion extending obliquely from the first portion51L, a portion extending along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52L.

The wiring50M includes a first portion51M and a second portion52M.

The first portion51M is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51M overlaps with the third base portion58, as viewed in the y-direction. The first portion51M is located on the side of the fourth face34in the x-direction with respect to the first portion51L, and spaced therefrom. The first portion51M overlaps with the first portion51L, as viewed in the x-direction. The shape of the first portion51M is not specifically limited. In the illustrated example, the first portion51M has a rectangular shape.

The second portion52M is located on the side of the fifth face35with respect to the first portion51M, in the y-direction. The second portion52M is located on the side of the fourth face34in the x-direction with respect to the second portion52L, and spaced therefrom. The second portion52M overlaps with the third base portion58, as viewed in the y-direction. The second portion52M overlaps with the second portion52L, as viewed in the x-direction. The shape of the second portion52M is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52M has a rectangular shape.

The wiring50M includes a strip-shaped portion connecting the first portion51M and the second portion52M. The strip-shaped portion includes a portion extending obliquely from the first portion51M, a portion extending along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52M.

The wiring50N includes a first portion51N and a second portion52N.

The first portion51N is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51N overlaps with the third base portion58, as viewed in the y-direction. The first portion51N is located on the side of the fourth face34in the x-direction with respect to the first portion51M, and spaced therefrom. The first portion51N overlaps with the first portion51M, as viewed in the x-direction. The shape of the first portion51N is not specifically limited. In the illustrated example, the first portion51N has a rectangular shape.

The second portion52N is located on the side of the fifth face35with respect to the first portion51N, in the y-direction. The second portion52N is located on the side of the fourth face34in the x-direction with respect to the second portion52M, and spaced therefrom. The second portion52N overlaps with the third base portion58, as viewed in the y-direction. The second portion52N overlaps with the second portion52M, as viewed in the x-direction. The shape of the second portion52N is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52N has a rectangular shape.

The wiring50N includes a strip-shaped portion connecting the first portion51N and the second portion52N. The strip-shaped portion includes a portion extending obliquely from the first portion51N, and a portion extending obliquely toward the second portion52N.

The wiring50O includes a first portion51O and a second portion52O.

The first portion51O is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51O overlaps with the third base portion58, as viewed in the y-direction. The first portion51O is located on the side of the fourth face34in the x-direction with respect to the first portion51N, and spaced therefrom. The first portion51O overlaps with the first portion51N, as viewed in the x-direction. The shape of the first portion51O is not specifically limited. In the illustrated example, the first portion51O has a rectangular shape.

The second portion52O is located on the side of the fifth face35with respect to the first portion51O, in the y-direction. The second portion52O is located on the side of the fourth face34in the x-direction with respect to the second portion52N, and spaced therefrom. The second portion52O overlaps with the third base portion58, as viewed in the y-direction. The second portion52O overlaps with the second portion52N, as viewed in the x-direction. The shape of the second portion52O is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52O has a rectangular shape.

The wiring50O includes a strip-shaped portion connecting the first portion51O and the second portion52O. The strip-shaped portion includes a portion extending obliquely from the first portion51O, and a portion extending along the y-direction toward the second portion52O.

The wiring50P includes a first portion51P and a second portion52P.

The first portion51P is located on the side of the fifth face35in the y-direction with respect to the third base portion58, and spaced therefrom. In the illustrated example, the first portion51P overlaps with the third base portion58, as viewed in the y-direction. The first portion51P is located on the side of the fourth face34in the x-direction with respect to the first portion51O, and spaced therefrom. The first portion51P overlaps with the first portion51O, as viewed in the x-direction. The shape of the first portion51P is not specifically limited. In the illustrated example, the first portion51P has a rectangular shape.

The second portion52P is located on the side of the fifth face35with respect to the first portion51P, in the y-direction. The second portion52P is located on the side of the fourth face34in the x-direction with respect to the second portion52O, and spaced therefrom. The second portion52P overlaps with the third base portion58, as viewed in the y-direction. The second portion52P overlaps with the second portion52O, as viewed in the x-direction. The shape of the second portion52P is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52P has a rectangular shape.

The wiring50P includes a strip-shaped portion connecting the first portion51P and the second portion52P. The strip-shaped portion includes a portion extending along the y-direction, from the first portion51P toward the second portion52P.

The wiring50Q includes a first portion51Q and a second portion52Q.

The first portion51Q is located on the side of the fourth face34in the x-direction, with respect to the third base portion58. The first portion51Q overlaps with a part of the third base portion58, as viewed in the x-direction. The first portion51Q overlaps with a part of the third base portion58, as viewed in the y-direction. The shape of the first portion51Q is not specifically limited. In the illustrated example, the first portion51Q has a polygonal shape.

The second portion52Q is located on the side of the fifth face35with respect to the first portion51Q, in the y-direction. The second portion52Q is located on the side of the fourth face34in the x-direction with respect to the second portion52P, and spaced therefrom. The second portion52Q is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52Q overlaps with the second portion52P, as viewed in the x-direction. The shape of the second portion52Q is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52Q has a rectangular shape.

The wiring50Q includes a strip-shaped portion connecting the first portion51Q and the second portion52Q. The strip-shaped portion includes a portion extending along the y-direction, from the first portion51Q toward the second portion52Q.

The wiring50R includes a first portion51R and a second portion52R.

The second portion52R is located on the side of the fifth face35with respect to the third base portion58, in the y-direction. The second portion52R is located on the side of the fourth face34in the x-direction with respect to the second portion52Q, and spaced therefrom. The second portion52R is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52R overlaps with the second portion52Q, as viewed in the x-direction. The shape of the second portion52R is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52R has a rectangular shape.

The wiring50R includes a strip-shaped portion connecting the third base portion58and the second portion52R. The strip-shaped portion includes a portion extending from the third base portion58along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52R.

The wiring50S includes a first portion51S and a second portion52S.

The first portion51S is located on the side of the fourth face34in the x-direction, with respect to the second base portion56. The first portion51S overlaps with the second base portion56, as viewed in the x-direction. The shape of the first portion51S is not specifically limited. In the illustrated example, the first portion51S has a rectangular shape.

The second portion52S is located on the side of the fifth face35with respect to the first portion51S, in the y-direction. The second portion52S is located on the side of the fourth face34in the x-direction with respect to the second portion52R, and spaced therefrom. The second portion52S is spaced apart from the second base portion56and the third base portion58, as viewed in the y-direction. The second portion52S overlaps with the second portion52R, as viewed in the x-direction. The shape of the second portion52S is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52S has a rectangular shape.

The wiring50S includes a strip-shaped portion connecting the first portion51S and the second portion52S. The strip-shaped portion includes a portion extending from the first portion51S along the x-direction, a portion extending obliquely, a portion extending along the y-direction, a portion extending obliquely, and a portion extending along the x-direction toward the second portion52S.

The wiring50T includes a first portion51T and a second portion52T.

The first portion51T is located on the side of the fourth face34in the x-direction, with respect to the second base portion56, and spaced therefrom. The first portion51T is located on the side of the sixth face36in the y-direction, with respect to the first portion51S, and spaced therefrom. In the illustrated example, the first portion51T overlaps with the first portion51S, as viewed in the y-direction. The first portion51T overlaps with the second base portion56, as viewed in the x-direction. The shape of the first portion51T is not specifically limited. In the illustrated example, the first portion51T has a rectangular shape.

The second portion52T is located on the side of the fifth face35with respect to the first portion51T, in the y-direction. The second portion52T is located on the side of the sixth face36in the y-direction with respect to the second portion52S, and spaced therefrom. The second portion52T is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52T overlaps with the second portion52S, as viewed in the y-direction. The shape of the second portion52T is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52T has a rectangular shape.

The wiring50T includes a strip-shaped portion connecting the first portion51T and the second portion52T. The strip-shaped portion includes a portion extending from the first portion51T along the x-direction, a portion extending obliquely, a portion extending along the y-direction, and a portion extending obliquely toward the second portion52T.

The wiring50U includes a first portion51U and a second portion52U.

The second portion52U is located on the side of the fifth face35with respect to the second base portion56, in the y-direction. The second portion52U is located on the side of the sixth face36in the y-direction with respect to the second portion52T, and spaced therefrom. The second portion52U is spaced apart from the third base portion58, as viewed in the y-direction. The second portion52U overlaps with the second portion52T, as viewed in the y-direction. The shape of the second portion52U is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52U has a rectangular shape.

The wiring50U includes a strip-shaped portion connecting the second base portion56and the second portion52U. The strip-shaped portion includes a portion extending from the second base portion56along the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52U.

The wiring50aincludes a first portion51aand a first portion51b.

The first portion51ais located on the side of the third face33in the x-direction, with respect to the first base portion55, and spaced therefrom. The first portion51aoverlaps with the first base portion55, as viewed in the x-direction. The shape of the second portion51ais not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion51ahas a rectangular shape.

The second portion52ais located on the side of the third face33in the x-direction, with respect to the first portion51a. The second portion52aoverlaps with the first portion51a, as viewed in the x-direction. The shape of the second portion52ais not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52ahas a rectangular shape.

The wiring50aincludes a strip-shaped portion connecting the first portion51aand the second portion52a. The strip-shaped portion includes a portion extending along the x-direction.

The wiring50bincludes a first portion51band a second portion52b.

The first portion51bis located on the side of the third face33in the x-direction, with respect to the first base portion55, and spaced therefrom. The first portion51boverlaps with the first base portion55, as viewed in the x-direction. The first portion51boverlaps with the first portion51a, as viewed in the y-direction. The shape of the second portion51bis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion51bhas a rectangular shape.

The second portion52bis located on the side of the third face33in the x-direction, with respect to the first portion51b, and spaced therefrom. The second portion52bis located on the side of the third face33in the x-direction, with respect to the second portion52a, and spaced therefrom. The second portion52boverlaps with the first base portion55and the second portion52a, as viewed in the x-direction. The shape of the second portion52bis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52bhas a rectangular shape having the long sides extending along the y-direction.

The wiring50bincludes a strip-shaped portion connecting the first portion51band the second portion52b. The strip-shaped portion includes a portion extending along the x-direction.

The wiring50hincludes a first portion51hand a second portion52h.

The first portion51his located on the side of the third face33in the x-direction, with respect to the first base portion55, and spaced therefrom. The first portion51hoverlaps with the first base portion55, as viewed in the x-direction. The first portion51hoverlaps with the first portion51b, as viewed in the y-direction. The shape of the second portion51his not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion51hhas a rectangular shape.

As shown inFIG. 70, the second portion52his located on the side of the third face33in the x-direction, with respect to the first portion51h, and spaced therefrom. The second portion52his located on the side of the sixth face36in the y-direction, with respect to the first portion51h, and spaced therefrom. The second portion52his spaced apart from the first base portion55, as viewed in the x-direction. The second portion52hoverlaps with the wiring50A, as viewed in the y-direction. The shape of the second portion52his not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52hhas a rectangular shape.

The wiring50hincludes a strip-shaped portion connecting the first portion51hand the second portion52h. The strip-shaped portion includes a portion extending from the first portion51halong the x-direction, a portion extending obliquely, and a portion extending along the y-direction toward the second portion52h.

The wiring50cincludes a first portion51cand a second portion52c.

The first portion51cis located on the side of the fourth face34in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51cis located between the connecting portion57and the first portion51H, in the y-direction. The first portion51coverlaps with the first base portion55, as viewed in the x-direction. The shape of the first portion51cis not specifically limited. In the illustrated example, the first portion51chas a rectangular shape.

The second portion52cis located on the side of the fourth face34in the x-direction with respect to the first portion51c, with a spacing therefrom, and on the side of the third face33in the x-direction with respect to the second base portion56, with a spacing therefrom. The second portion52coverlaps with the second base portion56, as viewed in the x-direction. The shape of the second portion52cis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52chas a rectangular shape.

The wiring50cincludes a strip-shaped portion connecting the first portion51cand the second portion52c. The strip-shaped portion extends along the x-direction.

The wiring50dincludes a first portion51dand a second portion52d.

The first portion51dis located on the side of the fourth face34in the x-direction with respect to the first base portion55, with a spacing therefrom, and shifted toward the fourth face34from the first portion51c. The first portion51dis located between the connecting portion57and the first portion51H in the y-direction, at a position shifted toward the fifth face35from the first portion51c. In the illustrated example, the first portion51doverlaps with the connecting portion57, as viewed in the y-direction. The first portion51doverlaps with the first base portion55and the first portion51c, as viewed in the x-direction. The shape of the first portion51dis not specifically limited. In the illustrated example, the first portion51dhas a polygonal shape.

The second portion52dis located on the side of the fourth face34in the x-direction with respect to the first portion51d, with a spacing therefrom, and on the side of the third face33in the x-direction with respect to the second base portion56, with a spacing therefrom. The second portion52dis located at a position shifted toward the fourth face34in the x-direction, from the second portion52c. The second portion52doverlaps with the second base portion56, as viewed in the x-direction. The second portion52doverlaps with the connecting portion57, as viewed in the y-direction. The shape of the second portion52dis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52dhas a polygonal shape.

The wiring50dincludes a strip-shaped portion connecting the first portion51dand the second portion52d. The strip-shaped portion extends along the x-direction.

The wiring50eincludes a first portion51eand a second portion52e.

The first portion51eis located on the side of the fourth face34in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51eis located between the connecting portion57and the first portion51H in the y-direction, at a position shifted toward the fifth face35from the first portion51d. In the illustrated example, the first portion51eoverlaps with the connecting portion57, as viewed in the y-direction. The first portion51eoverlaps with the first base portion55and the first portion51d, as viewed in the x-direction. The shape of the first portion51eis not specifically limited. In the illustrated example, the first portion51ehas a polygonal shape.

The second portion52eis located on the side of the fourth face34in the x-direction with respect to the first portion51e, with a spacing therefrom, and on the side of the third face33in the x-direction with respect to the second base portion56, with a spacing therefrom. The second portion52eis located at a position shifted toward the fourth face34in the x-direction, from the second portion52d. The second portion52eoverlaps with the second base portion56and the second portion52d, as viewed in the x-direction. The second portion52eoverlaps with the second portion52dand the connecting portion57, as viewed in the y-direction. The shape of the second portion52eis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52ehas a polygonal shape.

The wiring50eincludes a strip-shaped portion connecting the first portion51eand the second portion52e. The strip-shaped portion extends along the x-direction.

The wiring50gincludes a first portion51gand a second portion52g.

The first portion51gis located on the side of the fourth face34in the x-direction with respect to the first base portion55, and spaced therefrom. The first portion51gis located between the connecting portion57and the first portion51H in the y-direction, at a position shifted toward the fifth face35from the first portion51e. In the illustrated example, the first portion51goverlaps with the connecting portion57and the first portion51H, as viewed in the y-direction. The first portion51goverlaps with the first portion51H, as viewed in the x-direction. The shape of the first portion51gis not specifically limited. In the illustrated example, the first portion51ghas a polygonal shape.

The second portion52gis located on the side of the fourth face34in the x-direction with respect to the first portion51g, with a spacing therefrom, and on the side of the third face33in the x-direction with respect to the second base portion56, with a spacing therefrom. The second portion52goverlaps with the first portion51H, as viewed in the x-direction. The second portion52goverlaps with the first portion51H and the connecting portion57, as viewed in the y-direction. The shape of the second portion52gis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52ghas a polygonal shape.

The wiring50gincludes a strip-shaped portion connecting the first portion51gand the second portion52g. The strip-shaped portion extends along the x-direction.

The wiring50fincludes a first portion51fand a second portion52f.

The first portion51fis located on the side of the fourth face34in the x-direction with respect to the second base portion56, and spaced therefrom. The first portion51fis located on the side of the sixth face36in the y-direction with respect to the wiring50U, and spaced therefrom. In the illustrated example, the wiring50foverlaps with the second base portion56, as viewed in the x-direction. The wiring50foverlaps with the wiring50U, the first portion51T, and the first portion51S, as viewed in the y-direction. The shape of the first portion51fis not specifically limited. In the illustrated example, the first portion51fhas a rectangular shape.

The second portion52fis located on the side of the fourth face34in the x-direction with respect to the first portion51f, and spaced therefrom. The second portion52foverlaps with the second base portion56and the first portion51f, as viewed in the x-direction. The second portion52foverlaps with the wiring50S, the wiring50T, and the wiring50U, as viewed in the y-direction. The shape of the second portion52fis not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52fhas a rectangular shape.

The wiring50fincludes a strip-shaped portion connecting the first portion51fand the second portion52f. The strip-shaped portion extends along the x-direction.

Regarding the bonding section6according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the bonding section6according to the third embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment. Regarding a portion or structure on which no specific description is given, a similar configuration to that of the bonding section6of the semiconductor device A3may be adopted, as appropriate.

The plurality of bonding sections6are formed on the substrate3. In this embodiment, the plurality of bonding sections6are formed on the first face31of the substrate3. The bonding section6is formed of, for example, a conductive material. The conductive material to form the bonding section6is not specifically limited. Examples of the conductive material to form the bonding section6include materials containing silver (Ag), copper (Cu), or gold (Au). In the subsequent description, it will be assumed that the bonding section6contains silver. The bonding section6according to this embodiment contains the same conductive material as that employed to form the conductive section5. However, the bonding section6may contain copper instead of silver, or gold instead of silver or copper. Alternatively, the conductive section5may contain Ag—Pt or Ag—Pd. The forming method of the bonding section6is not limited. For example, the bonding section6may be formed, like the conductive section5, by sintering a paste containing the mentioned metal. The thickness of the bonding section6is not specifically limited, but may be, for example, approximately 5 μm to 30 μm.

In this embodiment, as shown inFIG. 70, the plurality of bonding sections6include a bonding sections6A to6D, and6H.

The bonding section6A is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6A overlaps with the entirety of the first base portion55, as viewed in the y-direction. The shape of the bonding section6A is not specifically limited.

The bonding section6B is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6B is located on the side of the fourth face34with respect to the bonding section6A, in the x-direction. In the illustrated example, the bonding section6B overlaps with the connecting portion57, the wirings50cto50g, and the second base portion56, as viewed in the y-direction. The shape of the bonding section6B is not specifically limited.

The bonding section6C is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6C is located on the side of the fourth face34with respect to the bonding section6B, in the x-direction. In the illustrated example, the bonding section6C overlaps with the wirings50S to50U, the wiring50f, and the second base portion56, as viewed in the y-direction. The shape of the bonding section6C is not specifically limited.

The bonding section6D is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6D is located on the side of the fourth face34with respect to the bonding section6C, in the x-direction. In the illustrated example, the bonding section6D overlaps with the wirings50S to50U and the wiring50f, and is spaced apart from the second base portion56, as viewed in the y-direction. The shape of the bonding section6D is not specifically limited.

The bonding section6H is located on the side of the sixth face36with respect to the conductive section5, in the y-direction. The bonding section6D is shifted toward the third face33in the x-direction, from the bonding section6A. In the illustrated example, the bonding section6D overlaps with the bonding section6A, as viewed in the x-direction and the y-direction. The shape of the bonding section6H is not specifically limited.

Regarding the lead1according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the lead1according to the first embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment. However, the configuration of the lead1of the semiconductor device A3may be adopted, as appropriate. The plurality of leads1contain a metal, and have higher heat dissipation characteristics, for example than the substrate3. The metal to form the lead1is not specifically limited, and may be, for example, copper (Cu), aluminum, iron (Fe), oxygen-free copper, or an alloy of the cited metals, such as a Cu—Sn alloy, a Cu—Zr alloy, or a Cu—Fe alloy. The plurality of leads1may be plated with nickel (Ni). Examples of the forming method of the plurality of leads1include pressing a metal plate with a die, and patterning a metal plate by etching, without limitation thereto. The thickness of the lead1is not specifically limited, but may be, for example, approximately 0.4 mm to 0.8 mm.

The plurality of leads1include a plurality of leads1A to1I, as shown inFIG. 70. The plurality of leads1A to1I constitute conduction paths to the semiconductor chips4A to4F, and4X.

The lead1A is located on the substrate3and, in this embodiment, on the first face31. The lead1A exemplifies a first lead in the present disclosure. The lead1A is bonded to the bonding section6A, via a bonding material81. It is preferable to employ a material having high thermal conductivity as the bonding material81, such as silver paste, copper paste, or solder. However, the bonding material81may be an insulative material such as an epoxy-based resin or a silicone-based resin. In the case where the bonding section6A is not provided on the substrate3, the lead1A may be bonded to the substrate3.

The configuration of the lead1A is not specifically limited and, in this embodiment, the lead1A includes a first portion11A, a second portion12A, a third portion13A, and a fourth portion14A, each of which will be described hereunder.

The first portion11A overlaps with the substrate3as viewed in the z-direction, and is bonded to the bonding section6A via the bonding material81.

In the illustrated example, the first portion11A includes a first portion113A and a second portion114A.

The first portion113A occupies a majority of the first portion11A. The first portion113A overlaps with the second base portion56, and the wirings50a,50b, and50h, as viewed in the y-direction.

The second portion114A is connected to the first portion113A on the side of the third face33, in the x-direction. The center of the second portion114A in the y-direction is shifted toward the fifth face35, from the center of the first portion113A in the y-direction. In the illustrated example, the edge of the first portion113A on the side of the fifth face35in the y-direction, and the edge of the second portion114A on the side of the fifth face35in the y-direction generally coincide with each other, as viewed in the x-direction. Here, the expression “generally coincide” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion113A or second portion114A in the y-direction).

The third portion13A and the fourth portion14A are covered with the encapsulating resin7. The third portion13A is connected to the first portion11A and the fourth portion14A. In the illustrated example, the third portion13A is connected to the first portion11A. In addition, the third portion13A is spaced apart from the sixth face36, as viewed in the z-direction. The fourth portion14A is shifted from the first portion11A in the z-direction. The end portion of the fourth portion14A is flush with a sixth face76of the resin7.

The second portion12A is connected to the end portion of the fourth portion14A, and corresponds to a portion of the lead1A sticking out from the encapsulating resin7. The second portion12A sticks out to the opposite side of the first portion11A, in the y-direction. The second portion12A is used, for example, to electrically connect the semiconductor device A7to an external circuit. The second portion12A is bent, for example, in the z-direction.

The lead1B is located on the substrate3and, in this embodiment, on the first face31. The lead1B exemplifies a first lead in the present disclosure. The lead1B is bonded to the bonding section6B, via the bonding material81. In the case where the bonding section6B is not provided on the substrate3, the lead1B may be bonded to the substrate3.

The configuration of the lead1B is not specifically limited. In this embodiment, the lead1B includes a first portion11B, a second portion12B, a third portion13B, and a fourth portion14B, each of which will be described hereunder.

The first portion11B overlaps with the substrate3as viewed in the z-direction, and is bonded to the bonding section6B via the bonding material81. The first portion11B overlaps with the second base portion56, as viewed in the y-direction

The third portion13B and the fourth portion14B are covered with the encapsulating resin7. The third portion13B is connected to the first portion11B and the fourth portion14B. In the illustrated example, the third portion13B is connected to the first portion11B. In addition, the third portion13B overlaps with the sixth face36, as viewed in the z-direction. The fourth portion14B is shifted from the first portion11B in the z-direction. The end portion of the fourth portion14B is flush with the sixth face76of the resin7.

The second portion12B is connected to the fourth portion14B, and corresponds to a portion of the lead1B sticking out from the encapsulating resin7. The second portion12B sticks out to the opposite side of the first portion11B, in the y-direction. The second portion12B is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion12B is bent, for example, in the z-direction.

The lead1C is located on the substrate3and, in this embodiment, on the first face31. The lead1C exemplifies a first lead in the present disclosure. The lead1C is bonded to the bonding section6C, via the bonding material81. In the case where the bonding section6C is not provided on the substrate3, the lead1C may be bonded to the substrate3.

The configuration of the lead1C is not specifically limited. In this embodiment, the lead1C includes a first portion11C, a second portion12C, a third portion13C, and a fourth portion14C, each of which will be described hereunder.

The first portion11C overlaps with the substrate3as viewed in the z-direction, and is bonded to the bonding section6C via the bonding material81. The first portion11C overlaps with the second base portion56, as viewed in the y-direction

The third portion13C and the fourth portion14C are covered with the encapsulating resin7. The third portion13C is connected to the first portion11C and the fourth portion14C. In the illustrated example, the third portion13C is connected to the first portion11C. The fourth portion14C is, like the fourth portion14B of the lead1B, shifted from the first portion11C in the z-direction. The end portion of the fourth portion14C is flush with the sixth face76of the resin7.

The second portion12C is connected to the end portion of the fourth portion14C, and corresponds to a portion of the lead1C sticking out from the encapsulating resin7. The second portion12C sticks out to the opposite side of the first portion11C, in the y-direction. The second portion12C is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion12C is bent, for example, in the z-direction.

The lead1D is located on the substrate3and, in this embodiment, on the first face31. The lead1D exemplifies a first lead in the present disclosure. The lead1D is bonded to the bonding section6D, via the bonding material81. In the case where the bonding section6D is not provided on the substrate3, the lead1D may be bonded to the substrate3.

The configuration of the lead1D is not specifically limited. In this embodiment the lead1D includes, as shown inFIG. 4andFIG. 14, a first portion11D, a second portion12D, a third portion13D, and a fourth portion14D, each of which will be described hereunder.

The first portion11D overlaps with the substrate3as viewed in the z-direction, and is bonded to the bonding section6D via the bonding material81. The first portion11D overlaps with the second base portion56, as viewed in the y-direction

The third portion13D and the fourth portion14D are covered with the encapsulating resin7. The third portion13D is connected to the first portion11D and the fourth portion14D. In the illustrated example, the third portion13D is connected to the first portion11D. The fourth portion14D is, like the fourth portion14B of the lead1B, shifted from the first portion11D in the z-direction. The end portion of the fourth portion14D is flush with the sixth face76of the resin7.

The second portion12D is connected to the end portion of the fourth portion14D, and corresponds to a portion of the lead1D sticking out from the encapsulating resin7. The second portion12D sticks out to the opposite side of the first portion11D, in the y-direction. The second portion12D is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion12D is bent, for example, in the z-direction.

The lead1E is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1E located on the side to which the sixth face36is oriented, with respect to the substrate3in the y-direction.

The configuration of the lead1E is not specifically limited. In this embodiment the lead1E includes a second portion12E and a fourth portion14E, each of which will be described hereunder.

The fourth portion14E is covered with the encapsulating resin7. The fourth portion14E is, like the fourth portion14D of the lead1D, shifted from the first portion11E in the z-direction. The fourth portion14E overlaps with the first portion11C and the first portion11D, as viewed in the y-direction. The end portion of the fourth portion14E is flush with the sixth face76of the resin7.

The second portion12E is connected to the end portion of the fourth portion14E, and corresponds to a portion of the lead1E sticking out from the encapsulating resin7. The second portion12E sticks out to the opposite side of the fourth portion14E, in the y-direction. The second portion12E is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion12E is bent, for example, in the z-direction.

The lead1F is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1F is located on the side to which the sixth face36is oriented, with respect to the substrate3in the y-direction. The lead1F is located on the opposite side of the fourth portion14D, across the lead1E.

The configuration of the lead1F is not specifically limited. In this embodiment the lead1F includes a second portion12F and a fourth portion14F, each of which will be described hereunder.

The fourth portion14F is covered with the encapsulating resin7. The fourth portion14F is, like the fourth portion14D of the lead1D, shifted from the first portion11F in the z-direction. The fourth portion14F overlaps with the first portion11D, as viewed in the y-direction. The end portion of the fourth portion14F is flush with the sixth face76of the resin7.

The second portion12F is connected to the end portion of the fourth portion14F, and corresponds to a portion of the lead1F sticking out from the encapsulating resin7. The second portion12F sticks out to the opposite side of the fourth portion14F, in the y-direction. The second portion12F is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion12F is bent, for example, in the z-direction.

The lead1G is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1G is located on the side to which the fourth face34is oriented, with respect to the substrate3in the x-direction. The lead1G is located on the opposite side of the fourth portion14E, across the lead1F.

The configuration of the lead1G is not specifically limited. In this embodiment the lead1G includes a second portion12G and a fourth portion14G, each of which will be described hereunder.

The fourth portion14G is covered with the encapsulating resin7. The fourth portion14G is, like the fourth portion14D of the lead1D, shifted from the first portion11G in the z-direction. The fourth portion14G overlaps with the fourth portion14F, as viewed in the y-direction. In addition, the fourth portion14G overlaps with the first portion11D, as viewed in the x-direction. The end portion of the fourth portion14G is flush with the sixth face76of the resin7.

The second portion12G is connected to the fourth portion14G, and corresponds to a portion of the lead1G sticking out from the encapsulating resin7. The second portion12G sticks out to the opposite side of the fourth portion14G, in the y-direction. The second portion12G is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion12G is bent, for example, in the z-direction.

The lead1H is located on the substrate3and, in this embodiment, on the first face31. The lead1H exemplifies a first lead in the present disclosure. The lead1H is bonded to the bonding section6H, via the bonding material81. In the case where the bonding section6H is not provided on the substrate3, the lead1H may be bonded to the substrate3.

The configuration of the lead1H is not specifically limited. In this embodiment the lead1H includes, as shown inFIG. 4andFIG. 14, a first portion11H, a second portion12H, a third portion13H, and a fourth portion14H, each of which will be described hereunder.

The first portion11H overlaps with the substrate3as viewed in the z-direction, and is bonded to the bonding section6H via the bonding material81.

In the illustrated example, the first portion11H includes a first portion113H and a second portion114H.

The first portion113H occupies a majority of the first portion11H. The first portion113H is located on the side of the third face33with respect to the first portion113A, as viewed in the x-direction. The first portion113H overlaps with the first portion113A, as viewed in the x-direction. The first portion113H is located on the side of the sixth face36in the y-direction, with respect to the second portion114A. The first portion113H overlaps with the second portion114A, as viewed in the y-direction.

The second portion114H is connected to the first portion113H on the side of the fifth face35, in the y-direction. The center of the second portion114H in the x-direction is shifted toward the third face33, from the center of the first portion113H in the x-direction. The second portion114H overlaps with the second portion114A, as viewed in the x-direction. The second portion114H is spaced apart from the second portion114A, as viewed in the y-direction. In the illustrated example, the edge of the first portion113H on the side of the third face33in the x-direction, and the edge of the second portion114H on the side of the third face33in the x-direction generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion113H or second portion114H in the x-direction).

The third portion13H and the fourth portion14H are covered with the encapsulating resin7. The third portion13H is connected to the first portion11H and the fourth portion14H. In the illustrated example, the third portion13H is connected to the first portion11H. In addition, the third portion13H is spaced apart from the sixth face36, as viewed in the z-direction. The fourth portion14H is shifted from the first portion11H in the z-direction. The end portion of the fourth portion14H is flush with a sixth face76of the resin7.

The second portion12H is connected to the end portion of the fourth portion14H, and corresponds to a portion of the lead1H sticking out from the encapsulating resin7. The second portion12H sticks out to the opposite side of the first portion11H, in the y-direction. The second portion12H is used, for example, to electrically connect the semiconductor device A7to an external circuit. The second portion12H is bent, for example, in the z-direction.

The lead1I is spaced apart from the substrate3, as viewed in the z-direction. In this embodiment, the lead1I located on the side to which the sixth face36is oriented, with respect to the substrate3in the y-direction. In addition, the lead1I is located on the opposite side of the fourth portion14A across the lead1H, in the x-direction.

The configuration of the lead1I is not specifically limited. In this embodiment the lead1I includes a second portion12I and a fourth portion14I, each of which will be described hereunder.

The fourth portion14I is covered with the encapsulating resin7. The fourth portion14I is, like the fourth portion14D of the lead1D, shifted from the first portion11I in the z-direction. The fourth portion14I overlaps with the first portion11H, as viewed in the y-direction. In addition, the fourth portion14I overlaps with the fourth portion14H, as viewed in the x-direction. The end portion of the fourth portion14I is flush with the sixth face76of the resin7.

The second portion12I is connected to the fourth portion14I, and corresponds to a portion of the lead1I sticking out from the encapsulating resin7. The second portion12I sticks out to the opposite side of the fourth portion14I, in the y-direction. The second portion12I is used, for example, to electrically connect the semiconductor device A33to an external circuit. In the illustrated example, the second portion12I is bent, for example, in the z-direction.

Regarding the lead2according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the lead2according to the third embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment. Regarding an element on which no specific description is given, a similar configuration to that of the corresponding element of the lead2of the semiconductor device A3may be adopted, as appropriate.

The plurality of leads2contain a metal, and have higher heat dissipation characteristics, for example than the substrate3. The metal to form the lead2is not specifically limited, and may be, for example, copper (Cu), aluminum, iron (Fe), oxygen-free copper, or an alloy of the cited metals, such as a Cu—Sn alloy, a Cu—Zr alloy, or a Cu—Fe alloy. The plurality of leads2may be plated with nickel (Ni). Examples of the forming method of the plurality of leads2include pressing a metal plate with a die, and patterning a metal plate by etching, without limitation thereto. The thickness of the lead2is not specifically limited, but may be, for example, approximately 0.4 mm to 0.8 mm. The plurality of leads2are located so as to overlap with the second region303of the substrate3, as viewed in the z-direction.

In this embodiment, the plurality of leads2include a plurality of leads2A to2V, as shown inFIG. 70andFIG. 71. The plurality of leads2A to2H, and2S to2U respectively constitute conduction paths to the control chips4G and4H. The plurality of leads2I to2R, and2V constitute conduction paths to the primary-side circuit chip4J.

The lead2A is spaced apart from the plurality of leads1. The lead2A is located on the conductive section5. The lead2A is electrically connected to the conductive section5. The lead2A exemplifies a second lead in the present disclosure. The lead2A is bonded to the second portion52A of the wiring50A in the conductive section5, via a conductive bonding material82. The conductive bonding material82may be any material that is capable of bonding, and electrically connecting, the lead2A to the second portion52A. For example, silver paste, copper paste, or solder may be employed as the conductive bonding material82. The conductive bonding material82corresponds to the first conductive bonding material in the present disclosure.

The configuration of the lead2A is not specifically limited. In this embodiment the lead2A includes, like that of the semiconductor device A3, a first portion21A, a second portion22A, a third portion23A, and a fourth portion24A, each of which will be described hereunder.

The first portion21A is bonded to the second portion52A of the wiring50A. The shape of the first portion21A is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21A has a bent shape including a portion extending along the x-direction, and a portion extending along the y-direction. The first portion21A overlaps with the third face33of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the third face33is oriented.

The third portion23A and the fourth portion24A are covered with the encapsulating resin7. The third portion23A is connected to the first portion21A and the fourth portion24A. The fourth portion24A is shifted in the z-direction with respect to the first portion21A. The end portion of the fourth portion24A is flush with a fifth face75of the resin7. In the illustrated example, the third portion23A and the fourth portion24A generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23A, or fourth portion24A in the x-direction).

The second portion22A is connected to the end portion of the fourth portion24A, and corresponds to a portion of the lead2A sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22A sticks out to the opposite side of the first portion21A, in the y-direction. The second portion22A is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22A is bent, for example, in the z-direction. The second portion22A, the third portion23A, and the fourth portion24A each include, on the respective sides thereof in the x-direction, edges extending along the y-direction.

The lead2B is spaced apart from the plurality of leads1. The lead2B is located on the conductive section5. The lead2B is electrically connected to the conductive section5. The lead2B exemplifies a second lead in the present disclosure. The lead2B is bonded to the second portion52B of the wiring50B in the conductive section5, via the conductive bonding material82.

The configuration of the lead2B is not specifically limited. In this embodiment, the lead2B includes a first portion21B, a second portion22B, a third portion23B, and a fourth portion24B, each of which will be described hereunder.

The first portion21B is bonded to the second portion52B of the wiring503. The shape of the first portion21B is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21B has a bent shape including a portion extending along the x-direction, and a portion extending along the y-direction. The first portion21B overlaps with the third face33of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the third face33is oriented. In the illustrated example, the first portion21B overlaps with the second portion52B, as viewed in the z-direction.

The third portion23B and the fourth portion24B are covered with the encapsulating resin7. The third portion23B is connected to the first portion21B and the fourth portion24B. The fourth portion24B is shifted in the z-direction with respect to the first portion21B. The end portion of the fourth portion24B is flush with the fifth face75of the resin7. In the illustrated example, the third portion23B and the fourth portion24B generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23B or fourth portion24B in the x-direction).

The second portion22B is connected to the end portion of the fourth portion24B, and corresponds to a portion of the lead2B sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22B sticks out to the opposite side of the first portion21B, in the y-direction. The second portion22B is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22B is bent, for example, in the z-direction. The second portion22B, the third portion23B, and the fourth portion24B each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22B, the third portion23B, and the fourth portion24B, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22A, the third portion23A, and the fourth portion24A, on the side of the fourth face34in the x-direction.

The lead2C is spaced apart from the plurality of leads1. The lead2C is located on the conductive section5. The lead2C is electrically connected to the conductive section5. The lead2C exemplifies a second lead in the present disclosure. The lead2C is bonded to the second portion52C of the wiring50C in the conductive section5, via the conductive bonding material82.

The configuration of the lead2C is not specifically limited. In this embodiment, the lead2C includes a first portion21C, a second portion22C, a third portion23C, and a fourth portion24C, each of which will be described hereunder.

The first portion21C is bonded to the second portion52C of the wiring50C. The shape of the first portion21C is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21C has a strip shape extending along the y-direction. The first portion21C overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21C overlaps with the second portion52C, as viewed in the z-direction.

The third portion23C and the fourth portion24C are covered with the encapsulating resin7. The third portion23C is connected to the first portion21C and the fourth portion24C. The fourth portion24C is shifted in the z-direction with respect to the first portion21C. The end portion of the fourth portion24C is flush with the fifth face75of the resin7. In the illustrated example, the third portion23C and the fourth portion24C generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23C or fourth portion24C in the x-direction).

The second portion22C is connected to the end portion of the fourth portion24C, and corresponds to a portion of the lead2C sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22C sticks out to the opposite side of the first portion21C, in the y-direction. The second portion22C is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22C is bent, for example, in the z-direction. The second portion22C, the third portion23C, and the fourth portion24C each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22C, the third portion23C, and the fourth portion24C, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22B, the third portion23B, and the fourth portion24B, on the side of the fourth face34in the x-direction.

The lead2D is spaced apart from the plurality of leads1. The lead2D is located on the conductive section5. The lead2D is electrically connected to the conductive section5. The lead2D exemplifies a second lead in the present disclosure. The lead2D is bonded to the second portion52D of the wiring50D in the conductive section5, via the conductive bonding material82.

The configuration of the lead2D is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2D includes a first portion21D, a second portion22D, a third portion23D, and a fourth portion24D, each of which will be described hereunder.

The first portion21D is bonded to the second portion52D of the wiring50D. The shape of the first portion21D is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21D has a strip shape extending along the y-direction. The first portion21D overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the v-direction toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21D overlaps with the second portion52D, as viewed in the z-direction.

The third portion23D and the fourth portion24D are covered with the encapsulating resin7. The third portion23D is connected to the first portion21D and the fourth portion24D. The fourth portion24D is shifted in the z-direction with respect to the first portion21D. The end portion of the fourth portion24D is flush with the fifth face75of the resin7. In the illustrated example, the third portion23D and the fourth portion24D generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23D or fourth portion24D in the x-direction).

The second portion22D is connected to the end portion of the fourth portion24D, and corresponds to a portion of the lead2D sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22D sticks out to the opposite side of the first portion21D, in the y-direction. The second portion22D is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22D is bent in the z-direction. The second portion22D, the third portion23D, and the fourth portion24D each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22D, the third portion23D, and the fourth portion24D, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22C, the third portion23C, and the fourth portion24C, on the side of the fourth face34in the x-direction.

The lead2E is spaced apart from the plurality of leads1. The lead2E is located on the conductive section5. The lead2E is electrically connected to the conductive section5. The lead2E exemplifies a second lead in the present disclosure. The lead2E is bonded to the second portion52E of the wiring50E in the conductive section5, via the conductive bonding material82.

The configuration of the lead2E is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2E includes a first portion21E, a second portion22E, a third portion23E, and a fourth portion24E, each of which will be described hereunder.

The first portion21E is bonded to the second portion52E of the wiring50E. The shape of the first portion21E is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21E has a strip shape extending along the y-direction. The first portion21E overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21E overlaps with the second portion52E, as viewed in the z-direction.

The third portion23E and the fourth portion24E are covered with the encapsulating resin7. The third portion23E is connected to the first portion21E and the fourth portion24E. The fourth portion24E is shifted in the z-direction with respect to the first portion21E. The end portion of the fourth portion24E is flush with the fifth face75of the resin7. In the illustrated example, the third portion23E and the fourth portion24E generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23E or fourth portion24E in the x-direction).

The second portion22E is connected to the end portion of the fourth portion24E, and corresponds to a portion of the lead2E sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22E sticks out to the opposite side of the first portion21E, in the y-direction. The second portion22E is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22E is bent in the z-direction. The second portion22E, the third portion23E, and the fourth portion24E each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22E, the third portion23E, and the fourth portion24E, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22D, the third portion23D, and the fourth portion24D, on the side of the fourth face34in the x-direction.

The lead2F is spaced apart from the plurality of leads1. The lead2F is located on the conductive section5. The lead2F is electrically connected to the conductive section5. The lead2F exemplifies a second lead in the present disclosure. The lead2F is bonded to the second portion52F of the wiring50F in the conductive section5, via the conductive bonding material82.

The configuration of the lead2F is not specifically limited. In this embodiment, the lead2F includes a first portion21F, a second portion22F, a third portion23F, and a fourth portion24F, each of which will be described hereunder.

The first portion21F is bonded to the second portion52F of the wiring50F. The shape of the first portion21F is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21F has a strip shape extending along the y-direction. The first portion21F overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21F overlaps with the second portion52F, as viewed in the z-direction.

The third portion23F and the fourth portion24F are covered with the encapsulating resin7. The third portion23F is connected to the first portion21F and the fourth portion24F. The fourth portion24F is shifted in the z-direction with respect to the first portion21F. The end portion of the fourth portion24F is flush with the fifth face75of the resin7. In the illustrated example, the third portion23F and the fourth portion24F generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23F or fourth portion24F in the x-direction).

The second portion22F is connected to the end portion of the fourth portion24F, and corresponds to a portion of the lead2F sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22F sticks out to the opposite side of the first portion21F, in the y-direction. The second portion22F is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22F is bent, for example, in the z-direction. The second portion22F, the third portion23F, and the fourth portion24F each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22F, the third portion23F, and the fourth portion24F, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22E, the third portion23E, and the fourth portion24E, on the side of the fourth face34in the x-direction.

The lead2G is spaced apart from the plurality of leads1. The lead2G is located on the conductive section5. The lead2G is electrically connected to the conductive section5. The lead2G exemplifies a second lead in the present disclosure. The lead2G is bonded to the second portion52G of the wiring50G in the conductive section5, via the conductive bonding material82.

The configuration of the lead2G is not specifically limited. In this embodiment, the lead2G includes a first portion21G, a second portion22G, a third portion23G, and a fourth portion24G, each of which will be described hereunder.

The first portion21G is bonded to the second portion52G of the wiring50G. The shape of the first portion21G is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21G has a strip shape extending along the y-direction. The first portion21G overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21G overlaps with the second portion52G, as viewed in the z-direction.

The third portion23G and the fourth portion24G are covered with the encapsulating resin7. The third portion23G is connected to the first portion21G and the fourth portion24G. The fourth portion24G is shifted in the z-direction with respect to the first portion21G. The end portion of the fourth portion24G is flush with the fifth face75of the resin7. In the illustrated example, the third portion23G and the fourth portion24G generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23G or fourth portion24G in the x-direction).

The second portion22G is connected to the end portion of the fourth portion24G, and corresponds to a portion of the lead2G sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22G sticks out to the opposite side of the first portion21G, in the y-direction. The second portion22G is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22G is bent, for example, in the z-direction. The second portion22G, the third portion23G, and the fourth portion24G each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22G, the third portion23G, and the fourth portion24G, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22F, the third portion23F, and the fourth portion24F, on the side of the fourth face34in the x-direction.

The lead2H is spaced apart from the plurality of leads1. The lead2H is located on the conductive section5. The lead2H is electrically connected to the conductive section5. The lead2H exemplifies a second lead in the present disclosure. The lead2H is bonded to the second portion52H of the wiring50H in the conductive section5, via the conductive bonding material82.

The configuration of the lead2H is not specifically limited. In this embodiment, the lead2H includes a first portion21H, a second portion22H, a third portion23H, and a fourth portion24H, each of which will be described hereunder.

The first portion21H is bonded to the second portion52H of the wiring50H. The shape of the first portion21H is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21H has a strip shape extending along the y-direction. The first portion21H overlaps with the fifth face35of the substrate3as viewed in the z-direction, and sticks out in the y-direction toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21H overlaps with the second portion52H, as viewed in the z-direction.

The third portion23H and the fourth portion24H are covered with the encapsulating resin7. The third portion23H is connected to the first portion21H and the fourth portion24H. The fourth portion24H is shifted in the z-direction with respect to the first portion21H. The end portion of the fourth portion24H is flush with the fifth face75of the resin7. In the illustrated example, the third portion23H and the fourth portion24H generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23H or fourth portion24H in the x-direction).

The second portion22H is connected to the end portion of the fourth portion24H, and corresponds to a portion of the lead2H sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22H sticks out to the opposite side of the first portion21H, in the y-direction. The second portion22H is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22H is bent, for example, in the z-direction. The second portion22H, the third portion23H, and the fourth portion24H each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22H, the third portion23H, and the fourth portion24H, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22G, the third portion23G, and the fourth portion24G, on the side of the fourth face34in the x-direction.

The lead2V is spaced apart from the plurality of leads1. The lead2V is located on the conductive section5. The lead2V is electrically connected to the conductive section5. The lead2V exemplifies a second lead in the present disclosure. The lead2V is bonded to the second portion52V of the wiring50V in the conductive section5, via the conductive bonding material82.

The configuration of the lead2V is not specifically limited. In this embodiment, as shown inFIG. 71, the lead2V includes a first portion21V, a second portion22V, a third portion23V, and a fourth portion24V, each of which will be described hereunder.

The first portion21V is bonded to the second portion52V of the wiring50V. The shape of the first portion21V is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21V has a strip shape extending along the y-direction. The first portion21V overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35along the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21V overlaps with the second portion52V, as viewed in the z-direction.

The third portion23V and the fourth portion24V are covered with the encapsulating resin7. The third portion23V is connected to the first portion21V and the fourth portion24V. The fourth portion24V is shifted in the z-direction with respect to the first portion21V. The end portion of the fourth portion24V is flush with the fifth face75of the resin7. In the illustrated example, the first portion21V, the third portion23V, and the fourth portion24V generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21V, third portion23V, or fourth portion24V in the x-direction). The third portion23V overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22V is connected to the end portion of the fourth portion24V, and corresponds to a portion of the lead2V sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22V sticks out to the opposite side of the first portion21V, in the y-direction. The second portion22V is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22V is bent, for example, in the z-direction. The second portion22V, the third portion23V, and the fourth portion24V each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22V, the third portion23V, and the fourth portion24V, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22H, the third portion23H, and the fourth portion24H, on the side of the fourth face34in the x-direction.

The lead2I is spaced apart from the plurality of leads1. The lead2I is located on the conductive section5. The lead2I is electrically connected to the conductive section5. The lead2I exemplifies a second lead in the present disclosure. The lead2I is bonded to the second portion52I of the wiring50I in the conductive section5, via the conductive bonding material82.

The configuration of the lead2I is not specifically limited. In this embodiment, as shown inFIG. 71, the lead2I includes a first portion21I, a second portion22I, a third portion23I, and a fourth portion24I, each of which will be described hereunder.

The first portion21I is bonded to the second portion52I of the wiring50I. The shape of the first portion21I is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21I has a strip shape extending along the y-direction. The first portion21I overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35along the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21I overlaps with the second portion52I, as viewed in the z-direction.

The third portion23I and the fourth portion24I are covered with the encapsulating resin7. The third portion23I is connected to the first portion21I and the fourth portion24I. The fourth portion24I is shifted in the z-direction with respect to the first portion21I. The end portion of the fourth portion24I is flush with the fifth face75of the resin7. In the illustrated example, the first portion21I, the third portion23I, and the fourth portion24I generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21I, third portion23I, or fourth portion24I in the x-direction). The third portion23I overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22I is connected to the end portion of the fourth portion24I, and corresponds to a portion of the lead2I sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22I sticks out to the opposite side of the first portion21I, in the y-direction. The second portion22I is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22I is bent, for example, in the z-direction. The second portion22I, the third portion23I, and the fourth portion24I each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22I, the third portion23I, and the fourth portion24I, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22V, the third portion23V, and the fourth portion24V, on the side of the fourth face34in the x-direction.

The lead2J is spaced apart from the plurality of leads1. The lead2J is located on the conductive section5. The lead2J is electrically connected to the conductive section5. The lead2J exemplifies a second lead in the present disclosure. The lead2J is bonded to the second portion52J of the wiring50J in the conductive section5, via the conductive bonding material82.

The configuration of the lead2J is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2J includes a first portion21J, a second portion22J, a third portion23J, and a fourth portion24J, each of which will be described hereunder.

The first portion21J is bonded to the second portion52J of the wiring50J. The shape of the first portion21J is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21J has a strip shape extending along the y-direction. The first portion21J overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35along the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21J overlaps with the second portion52J, as viewed in the z-direction.

The third portion23J and the fourth portion24J are covered with the encapsulating resin7. The third portion23J is connected to the first portion21J and the fourth portion24J. The fourth portion24J is shifted in the z-direction with respect to the first portion21J. The end portion of the fourth portion24J is flush with the fifth face75of the resin7. In the illustrated example, the first portion21J, the third portion23J, and the fourth portion24J generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21J, third portion23J, or fourth portion24J in the x-direction). The third portion23J overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22J is connected to the end portion of the fourth portion24J, and corresponds to a portion of the lead2J sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22J sticks out to the opposite side of the first portion21J, in the y-direction. The second portion22J is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22J is bent, for example, in the z-direction. The second portion22J, the third portion23J, and the fourth portion24J each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22J, the third portion23J, and the fourth portion24J, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22I, the third portion23I, and the fourth portion24I, on the side of the fourth face34in the x-direction.

The lead2K is spaced apart from the plurality of leads1. The lead2K is located on the conductive section5. The lead2K is electrically connected to the conductive section5. The lead2K exemplifies a second lead in the present disclosure. The lead2K is bonded to the second portion52K of the wiring50K in the conductive section5, via the conductive bonding material82.

The configuration of the lead2K is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2K includes a first portion21K, a second portion22K, a third portion23K, and a fourth portion24K, each of which will be described hereunder.

The first portion21K is bonded to the second portion52K of the wiring50K. The shape of the first portion21K is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21K has a strip shape extending along the y-direction. The first portion21K overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35along the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21K overlaps with the second portion52K, as viewed in the z-direction.

The third portion23K and the fourth portion24K are covered with the encapsulating resin7. The third portion23K is connected to the first portion21K and the fourth portion24K. The fourth portion24K is shifted in the z-direction with respect to the first portion21K. The end portion of the fourth portion24K is flush with the fifth face75of the resin7. In the illustrated example, the first portion21K, the third portion23K, and the fourth portion24K generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21K, third portion23K, or fourth portion24K in the x-direction). The third portion23K overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22K is connected to the end portion of the fourth portion24K, and corresponds to a portion of the lead2K sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22K sticks out to the opposite side of the first portion21K, in the y-direction. The second portion22K is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22K is bent, for example, in the z-direction. The second portion22K, the third portion23K, and the fourth portion24K each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22K, the third portion23K, and the fourth portion24K, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22J, the third portion23J, and the fourth portion24J, on the side of the fourth face34in the x-direction.

The lead2L is spaced apart from the plurality of leads1. The lead2L is located on the conductive section5. The lead2L is electrically connected to the conductive section5. The lead2L exemplifies a second lead in the present disclosure. The lead2L is bonded to the second portion52L of the wiring50L in the conductive section5, via the conductive bonding material82.

The configuration of the lead2L is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2L includes a first portion21L, a second portion22L, a third portion23L, and a fourth portion24L, each of which will be described hereunder.

The first portion21L is bonded to the second portion52L of the wiring50L. The shape of the first portion21L is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21L has a strip shape extending along the y-direction. The first portion21L overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35along the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21L overlaps with the second portion52L, as viewed in the z-direction.

The third portion23L and the fourth portion24L are covered with the encapsulating resin7. The third portion23L is connected to the first portion21L and the fourth portion24L. The fourth portion24L is shifted in the z-direction with respect to the first portion21L. The end portion of the fourth portion24L is flush with the fifth face75of the resin7. In the illustrated example, the first portion21L, the third portion23L, and the fourth portion24L generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21L, third portion23L, or fourth portion24L in the x-direction). The third portion23L overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22L is connected to the end portion of the fourth portion24L, and corresponds to a portion of the lead2L sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22L sticks out to the opposite side of the first portion21L, in the y-direction. The second portion22L is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22L is bent, for example, in the z-direction. The second portion22L, the third portion23L, and the fourth portion24L each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22L, the third portion23L, and the fourth portion24L, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22K, the third portion23K, and the fourth portion24K, on the side of the fourth face34in the x-direction.

The lead2M is spaced apart from the plurality of leads1. The lead2M is located on the conductive section5. The lead2M is electrically connected to the conductive section5. The lead2M exemplifies a second lead in the present disclosure. The lead2M is bonded to the second portion52M of the wiring50M in the conductive section5, via the conductive bonding material82.

The configuration of the lead2M is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2M includes a first portion21M, a second portion22M, a third portion23M, and a fourth portion24M, each of which will be described hereunder.

The first portion21M is bonded to the second portion52M of the wiring50M. The shape of the first portion21M is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21M has a strip shape extending along the y-direction. The first portion21M overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35along the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21M overlaps with the second portion52M, as viewed in the z-direction.

The third portion23M and the fourth portion24M are covered with the encapsulating resin7. The third portion23M is connected to the first portion21M and the fourth portion24M. The fourth portion24M is shifted in the z-direction with respect to the first portion21M. The end portion of the fourth portion24M is flush with the fifth face75of the resin7. In the illustrated example, the first portion21M, the third portion23M, and the fourth portion24M generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21M, third portion23M, or fourth portion24M in the x-direction). The third portion23M overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22M is connected to the end portion of the fourth portion24M, and corresponds to a portion of the lead2M sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22M sticks out to the opposite side of the first portion21M, in the y-direction. The second portion22M is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22M is bent, for example, in the z-direction. The second portion22M, the third portion23M, and the fourth portion24M each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22M, the third portion23M, and the fourth portion24M, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22L, the third portion23L, and the fourth portion24L, on the side of the fourth face34in the x-direction.

The lead2N is spaced apart from the plurality of leads1. The lead2N is located on the conductive section5. The lead2N is electrically connected to the conductive section5. The lead2N exemplifies a second lead in the present disclosure. The lead2N is bonded to the second portion52N of the wiring50N in the conductive section5, via the conductive bonding material82.

The configuration of the lead2N is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2N includes a first portion21N, a second portion22N, a third portion23N, and a fourth portion24N, each of which will be described hereunder.

The first portion21N is bonded to the second portion52N of the wiring50N. The shape of the first portion21N is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21N has a strip shape extending along the y-direction. The first portion21N overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35along the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21N overlaps with the second portion52N, as viewed in the z-direction.

The third portion23N and the fourth portion24N are covered with the encapsulating resin7. The third portion23N is connected to the first portion21N and the fourth portion24N. The fourth portion24N is shifted in the z-direction with respect to the first portion21N. The end portion of the fourth portion24N is flush with the fifth face75of the resin7. In the illustrated example, the first portion21N, the third portion23N, and the fourth portion24N generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21N, third portion23N, or fourth portion24N in the x-direction). The third portion23N overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22N is connected to the end portion of the fourth portion24N, and corresponds to a portion of the lead2N sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22N sticks out to the opposite side of the first portion21N, in the y-direction. The second portion22N is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22N is bent, for example, in the z-direction. The second portion22N, the third portion23N, and the fourth portion24N each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22N, the third portion23N, and the fourth portion24N, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22M, the third portion23M, and the fourth portion24M, on the side of the fourth face34in the x-direction.

The lead2O is spaced apart from the plurality of leads1. The lead2O is located on the conductive section5. The lead2O is electrically connected to the conductive section5. The lead2O exemplifies a second lead in the present disclosure. The lead2O is bonded to the second portion52O of the wiring50O in the conductive section5, via the conductive bonding material82.

The configuration of the lead2O is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2O includes a first portion21O, a second portion22O, a third portion23O, and a fourth portion24O, each of which will be described hereunder.

The first portion21O is bonded to the second portion52O of the wiring50O. The shape of the first portion21O is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21O has a strip shape extending along the y-direction. The first portion21O overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35along the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21O overlaps with the second portion52O, as viewed in the z-direction.

The third portion23O and the fourth portion24O are covered with the encapsulating resin7. The third portion23O is connected to the first portion21O and the fourth portion24O. The fourth portion24O is shifted in the z-direction with respect to the first portion21O. The end portion of the fourth portion24O is flush with the fifth face75of the resin7. In the illustrated example, the first portion21O, the third portion23O, and the fourth portion24O generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21O, third portion23O, or fourth portion24O in the x-direction). The third portion23O overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22O is connected to the end portion of the fourth portion24O, and corresponds to a portion of the lead2O sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22O sticks out to the opposite side of the first portion21O, in the y-direction. The second portion22O is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22O is bent, for example, in the z-direction. The second portion22O, the third portion23O, and the fourth portion24O each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22O, the third portion23O, and the fourth portion24O, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22N, the third portion23N, and the fourth portion24N, on the side of the fourth face34in the x-direction.

The lead2P is spaced apart from the plurality of leads1. The lead2P is located on the conductive section5. The lead2P is electrically connected to the conductive section5. The lead2P exemplifies a second lead in the present disclosure. The lead2P is bonded to the second portion52P of the wiring50P in the conductive section5, via the conductive bonding material82.

The configuration of the lead2P is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2P includes a first portion21P, a second portion22P, a third portion23P, and a fourth portion24P, each of which will be described hereunder.

The first portion21P is bonded to the second portion52P of the wiring50P. The shape of the first portion21P is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21P has a strip shape extending along the y-direction. The first portion21P overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35along the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21P overlaps with the second portion52P, as viewed in the z-direction.

The third portion23P and the fourth portion24P are covered with the encapsulating resin7. The third portion23P is connected to the first portion21P and the fourth portion24P. The fourth portion24P is shifted in the z-direction with respect to the first portion21P. The end portion of the fourth portion24P is flush with the fifth face75of the resin7. In the illustrated example, the first portion21P, the third portion23P, and the fourth portion24P generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21P, third portion23P, or fourth portion24P in the x-direction). The third portion23P overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22P is connected to the end portion of the fourth portion24P, and corresponds to a portion of the lead2P sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22P sticks out to the opposite side of the first portion21P, in the y-direction. The second portion22P is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22P is bent, for example, in the z-direction. The second portion22P, the third portion23P, and the fourth portion24P each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22P, the third portion23P, and the fourth portion24P, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22O, the third portion23O, and the fourth portion24O, on the side of the fourth face34in the x-direction.

The lead2Q is spaced apart from the plurality of leads1. The lead2Q is located on the conductive section5. The lead2Q is electrically connected to the conductive section5. The lead2Q exemplifies a second lead in the present disclosure. The lead2Q is bonded to the second portion52Q of the wiring50Q in the conductive section5, via the conductive bonding material82.

The configuration of the lead2Q is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2Q includes a first portion21Q, a second portion22Q, a third portion23Q, and a fourth portion24Q, each of which will be described hereunder.

The first portion21Q is bonded to the second portion52Q of the wiring50Q. The shape of the first portion21Q is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21Q has a strip shape extending along the y-direction. The first portion21Q overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35along the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21Q overlaps with the second portion52Q, as viewed in the z-direction.

The third portion23Q and the fourth portion24Q are covered with the encapsulating resin7. The third portion23Q is connected to the first portion21Q and the fourth portion24Q. The fourth portion24Q is shifted in the z-direction with respect to the first portion21Q. The end portion of the fourth portion24Q is flush with the fifth face75of the resin7. In the illustrated example, the first portion21Q, the third portion23Q, and the fourth portion24Q generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21Q, third portion23Q, or fourth portion24Q in the x-direction). The third portion23Q overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22Q is connected to the end portion of the fourth portion24Q, and corresponds to a portion of the lead2Q sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22Q sticks out to the opposite side of the first portion21Q, in the y-direction. The second portion22Q is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22Q is bent, for example, in the z-direction. The second portion22Q, the third portion23Q, and the fourth portion24Q each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22Q, the third portion23Q, and the fourth portion24Q, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22P, the third portion23P, and the fourth portion24P, on the side of the fourth face34in the x-direction.

The lead2R is spaced apart from the plurality of leads1. The lead2R is located on the conductive section5. The lead2R is electrically connected to the conductive section5. The lead2R exemplifies a second lead in the present disclosure. The lead2R is bonded to the second portion52R of the wiring50R in the conductive section5, via the conductive bonding material82.

The configuration of the lead2R is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2R includes a first portion21R, a second portion22R, a third portion23R, and a fourth portion24R, each of which will be described hereunder.

The first portion21R is bonded to the second portion52R of the wiring50R. The shape of the first portion21R is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21R has a strip shape extending along the y-direction. The first portion21R overlaps with the fifth face as viewed in the z-direction, and includes a portion extending from the fifth face35along the y-direction, toward the side to which the fifth face35is oriented. In the illustrated example, the first portion21R overlaps with the second portion52R, as viewed in the z-direction.

The third portion23R and the fourth portion24R are covered with the encapsulating resin7. The third portion23R is connected to the first portion21R and the fourth portion24R. The fourth portion24R is shifted in the z-direction with respect to the first portion21R. The end portion of the fourth portion24R is flush with the fifth face75of the resin7. In the illustrated example, the first portion21R, the third portion23R, and the fourth portion24R generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion21R, third portion23R, or fourth portion24R in the x-direction). The third portion23R overlaps with the fifth face35of the substrate3, as viewed in the z-direction.

The second portion22R is connected to the end portion of the fourth portion24R, and corresponds to a portion of the lead2R sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22R sticks out to the opposite side of the first portion21R, in the y-direction. The second portion22R is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22R is bent, for example, in the z-direction. The second portion22R, the third portion23R, and the fourth portion24R each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22R, the third portion23R, and the fourth portion24R, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22Q, the third portion23Q, and the fourth portion24Q, on the side of the fourth face34in the x-direction.

The lead2S is spaced apart from the plurality of leads1. The lead2S is located on the conductive section5. The lead2S is electrically connected to the conductive section5. The lead2S exemplifies a second lead in the present disclosure. The lead2S is bonded to the second portion52S of the wiring50S in the conductive section5, via the conductive bonding material82.

The configuration of the lead2S is not specifically limited. In this embodiment, as shown inFIG. 59, the lead2S includes a first portion21S, a second portion22S, a third portion23S, and a fourth portion24S, each of which will be described hereunder.

The first portion21S is bonded to the second portion52S of the wiring50S. The shape of the first portion21S is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21S has a bent shape including a portion extending along the x-direction, a portion inclined with respect to the x-direction and the y-direction, and a portion extending along the y-direction. The first portion21S overlaps with the fourth face34of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the fourth face34is oriented. In the illustrated example, the first portion21S overlaps with the second portion52S, as viewed in the z-direction.

The third portion23S and the fourth portion24S are covered with the encapsulating resin7. The third portion23S is connected to the first portion21S and the fourth portion24S. The fourth portion24S is shifted in the z-direction with respect to the first portion21S. The end portion of the fourth portion24S is flush with the fifth face75of the resin7. In the illustrated example, the third portion23S and the fourth portion24S generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23S or fourth portion24S in the x-direction).

The second portion22S is connected to the end portion of the fourth portion24S, and corresponds to a portion of the lead2S sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22S sticks out to the opposite side of the first portion21S, in the y-direction. The second portion22S is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22S is bent, for example, in the z-direction. The second portion22S, the third portion23S, and the fourth portion24S each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22S, the third portion23S, and the fourth portion24S, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22R, the third portion23R, and the fourth portion24R, on the side of the fourth face34in the x-direction.

The lead2T is spaced apart from the plurality of leads1. The lead2T is located on the conductive section5. The lead2T is electrically connected to the conductive section5. The lead2T exemplifies a second lead in the present disclosure. The lead2T is bonded to the second portion52T of the wiring50T in the conductive section5, via the conductive bonding material82.

The configuration of the lead2T is not specifically limited. In this embodiment, as shown inFIG. 58andFIG. 59, the lead2T includes a first portion21T, a second portion22T, a third portion23T, and a fourth portion24T, each of which will be described hereunder.

The first portion21T is bonded to the second portion52T of the wiring50T. The shape of the first portion21T is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21T has a bent shape including a portion extending along the x-direction, a portion inclined with respect to the x-direction and the y-direction, and a portion extending along the y-direction. The first portion21T overlaps with the fourth face34of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the fourth face34is oriented. In the illustrated example, the first portion21T overlaps with the second portion52T, as viewed in the z-direction.

The third portion23T and the fourth portion24T are covered with the encapsulating resin7. The third portion23T is connected to the first portion21T and the fourth portion24T. The fourth portion24T is shifted in the z-direction with respect to the first portion21T, to the side to which the first face31is oriented, like the third portion23I and the fourth portion24I of the lead2I shown inFIG. 40. The end portion of the fourth portion24T is flush with the fifth face75of the resin7. In the illustrated example, the third portion23T and the fourth portion24T generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23T or fourth portion24T in the x-direction).

The second portion22T is connected to the end portion of the fourth portion24T, and corresponds to a portion of the lead2T sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22T sticks out to the opposite side of the first portion21T, in the y-direction. The second portion22T is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22T is bent, for example, in the z-direction. The second portion22T, the third portion23T, and the fourth portion24T each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22T, the third portion23T, and the fourth portion24T, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22S, the third portion23S, and the fourth portion24S, on the side of the fourth face34in the x-direction.

The lead2U is spaced apart from the plurality of leads1. The lead2U is located on the conductive section5. The lead2U is electrically connected to the conductive section5. The lead2U exemplifies a second lead in the present disclosure. The lead2U is bonded to the second portion52U of the wiring50U in the conductive section5, via the conductive bonding material82.

The configuration of the lead2U is not specifically limited. In this embodiment, as shown inFIG. 58andFIG. 59, the lead2U includes a first portion21U, a second portion22U, a third portion23U, and a fourth portion24U, each of which will be described hereunder.

The first portion21U is bonded to the second portion52U of the wiring50U. The shape of the first portion21U is not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the first portion21U has a bent shape including a portion extending along the x-direction, a portion inclined with respect to the x-direction and the y-direction, and a portion extending along the y-direction. The first portion21U overlaps with the fourth face34of the substrate3as viewed in the z-direction, and sticks out in the x-direction, toward the side to which the fourth face34is oriented. In the illustrated example, the first portion21U overlaps with the second portion52U, as viewed in the z-direction.

The third portion23U and the fourth portion24U are covered with the encapsulating resin7. The third portion23U is connected to the first portion21U and the fourth portion24U. The fourth portion24U is shifted in the z-direction with respect to the first portion21U. The end portion of the fourth portion24U is flush with the fifth face75of the resin7. In the illustrated example, the third portion23U and the fourth portion24U generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the third portion23U or fourth portion24U in the x-direction).

The second portion22U is connected to the end portion of the fourth portion24U, and corresponds to a portion of the lead2U sticking out from the encapsulating resin7to the opposite side of the plurality of leads1, as viewed in the y-direction. The second portion22U sticks out to the opposite side of the first portion21U, in the y-direction. The second portion22U is used, for example, to electrically connect the semiconductor device A7to an external circuit. In the illustrated example, the second portion22U is bent, for example, in the z-direction. The second portion22U, the third portion23U, and the fourth portion24U each include, on the respective sides thereof in the x-direction, edges extending along the y-direction. The edges of the second portion22U, the third portion23U, and the fourth portion24U, on the side of the third face33in the x-direction, are respectively opposed to the edges of the second portion22T, the third portion23T, and the fourth portion24T, on the side of the fourth face34in the x-direction.

The semiconductor chips4A to4F and4X, located on the plurality of leads1, each exemplify a semiconductor chip in the present disclosure. The type and the function of the semiconductor chips4A to4F and4X are not specifically limited. In this embodiment, the semiconductor chips4A to4F, and4X are a transistor. Although seven semiconductor chips4A to4F and4X are provided in the illustrated example, the number of semiconductor chips is by no means limited.

The semiconductor chips4A to4F and4X in the illustrated example are, for example, a transistor configured as an IGBT, like those of the semiconductor device A3.

In this embodiment, as shown inFIG. 70, three semiconductor chips4A,4B, and4C are provided on the first portion113A in the first portion11A of the lead1A. The three semiconductor chips4A,4B, and4C are spaced apart from each other in the x-direction, and overlap with each other as viewed in the x-direction. Here, the number of semiconductor chips to be mounted on the lead1A is by no means limited. In the illustrated example, the respective collector electrodes of the semiconductor chips4A,4B, and4C are bonded to the first portion11A, via the conductive bonding material83.

The conductive bonding material83may be any material that is capable of bonding, and electrically connecting, the collector electrode CP of the semiconductor chips4A,4B, and4C, to the first portion11A. For example, silver paste, copper paste, or solder may be employed as the conductive bonding material83. The conductive bonding material83corresponds to the second conductive bonding material in the present disclosure.

In this embodiment, the semiconductor chip4D is provided on the first portion1B of the lead13. Here, the number of semiconductor chips to be mounted on the lead13is by no means limited. In the illustrated example, the collector electrode of the semiconductor chip4D is bonded to the first portion1B, via the conductive bonding material83.

In this embodiment, the semiconductor chip4E is provided on the first portion11C of the lead1C. Here, the number of semiconductor chips to be mounted on the lead1C is by no means limited. In the illustrated example, the collector electrode of the semiconductor chip4E is bonded to the first portion11C, via the conductive bonding material83.

In this embodiment, the semiconductor chip4F is provided on the first portion11D of the lead1D. Here, the number of semiconductor chips to be mounted on the lead1D is by no means limited. In the illustrated example, the collector electrode of the semiconductor chip4F is bonded to the first portion11D, via the conductive bonding material83.

In this embodiment, the semiconductor chip4X is provided on the first portion113H in the first portion11H of the lead1H. Here, the number of semiconductor chips to be mounted on the lead1H is by no means limited. In the illustrated example, the collector electrode of the semiconductor chip4X is bonded to the first portion11H, via the conductive bonding material83.

The configuration of the diodes41A to41F, and41X is not specifically limited and may be, for example, similar to that of the diodes41A to41F of the semiconductor device A3.

As in the semiconductor device A3, the diode41A, the diode41B, and the diode41C are mounted on the first portion113A in the first portion11A. The diode41D is mounted on the first portion11B. The diode41E is mounted on the first portion11C. The diode41F is mounted on the first portion11D. The diode41X is mounted on the second portion114A in the first portion11A.

The diode41A overlaps with the semiconductor chip4A, as viewed in the y-direction. The diode41B overlaps with the semiconductor chip4B, as viewed in the y-direction. The diode41C overlaps with the semiconductor chip4C, as viewed in the y-direction. The diodes41A,41B, and41C overlap with each other, as viewed in the x-direction. The diodes41A,41B, and41C overlap with the semiconductor chip4X, as viewed in the x-direction.

The diode41D overlaps with the semiconductor chip4D, as viewed in the y-direction. The diode41E overlaps with the semiconductor chip4E, as viewed in the y-direction. The diode41F overlaps with the semiconductor chip4F, as viewed in the y-direction. The diodes41D,41E, and41F overlap with each other, as viewed in the x-direction.

The diode41X overlaps with the semiconductor chip4X, as viewed in the y-direction. The diode41X overlaps with the semiconductor chips4A,4B, and4C, as viewed in the x-direction. In addition, the diode41X overlaps with the second portion114H, as viewed in the x-direction.

The configuration of the control chips4G and4H is not specifically limited and may be, for example, similar to that of the control chips4G and4H of the semiconductor device A3.

In this embodiment, as shown inFIG. 71, the control chip4G is mounted on the first base portion55of the conductive section5. The control chip4H is mounted on the second base portion56of the conductive section5. In this embodiment, the control chip4G is bonded to the first base portion55, via the conductive bonding material84. The control chip4H is bonded to the second base portion56, via the conductive bonding material84.

The conductive bonding material84may be any material that is capable of bonding, and electrically connecting, the control chip4G to the first base portion55, and the control chip4H to the second base portion56. For example, silver paste, copper paste, or solder may be employed as the conductive bonding material84. The conductive bonding material84corresponds to the third conductive material in the present disclosure. In this embodiment, the conductive bonding material84extends outwardly from the outer periphery of the control chips4G and4H, in a plan view. A reason of such a configuration is that, for example, when the conductive bonding material84performs the bonding function by curing after the fused state, the conductive bonding material84in the fused state spreads around the control chip4G (control chip4H) as viewed in the z-direction. Therefore, in the illustrated example, the conductive bonding material84protrudes from the respective outer edges of the control chips4G and4H, as viewed in the z-direction. However, the specific shape of the conductive bonding material84is by no means limited. Here, the control chips4G and4H may be bonded to the first base portion55via an insulative bonding material, instead of the conductive bonding material84. In the illustrated example, the conductive bonding material84has an uneven outer edge, as viewed in the z-direction. Such formation of the conductive bonding material84allows the control chips4G and4H to be bonded to a region of the conductive section5more distant from the control chips4G and4H, thereby further stabilizing the adhesion of the control chips4G and4H.

The control chip4G is located between the leads2A to2U and the leads1A to1G, as viewed in the x-direction. The control chip4H is located between the leads2A to2U and the leads1A to1G, as viewed in the x-direction. The control chips4G and the control chips4H overlap with each other, as viewed in the x-direction. The control chip4G overlaps with the semiconductor chips4B and4C, as viewed in the y-direction. The control chip4H overlaps with the semiconductor chips4D and4E, as viewed in the y-direction. The control chip4H overlaps with the transmission circuit chip4I and the primary-side circuit chip4J, as viewed in the y-direction. The control chip4G may overlap with the semiconductor chip4A, as viewed in the y-direction. The control chip4H may overlap with the semiconductor chip4F, as viewed in the y-direction.

The transmission circuit chip4I includes the first transmission circuit in the present disclosure. Like the transmission circuit chip4I in the semiconductor device A3, the transmission circuit chip4I has a transformer structure including at least two coils opposed to each other with a gap therebetween, to transmit electrical signals. In this embodiment, as shown inFIG. 71, the transmission circuit chip4I is, for example, mounted on the third base portion58via the conductive bonding material84. The transmission circuit chip4I is located between the control chip4H and the primary-side circuit chip4J, as viewed in the x-direction. The transmission circuit chip4I overlaps with the control chip4H, as viewed in the y-direction. Further, the transmission circuit chip4I overlaps with the first portions51I to51N (wirings50I to50N), as viewed in the y-direction. In the illustrated example, the conductive bonding material84protrudes from the outer edge of the transmission circuit chip4I, as viewed in the z-direction.

The primary-side circuit chip4J transmits command signals to the control chip4H, through the transmission circuit chip4I. In this embodiment, as shown inFIG. 71, the primary-side circuit chip4J is, for example, mounted on the third base portion58via the conductive bonding material84. The primary-side circuit chip4J is located on the side of the fifth face35in the y-direction, with respect to the transmission circuit chip4I.

The configuration of the diodes49U,49V, and49W is not specifically limited and may be, for example, similar to that of the diodes49U,49V, and49W of the semiconductor device A3.

Regarding the first wires91A to91F,91H, and91I according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the first wires91A to91F according to the third embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment. Regarding an element on which no specific description is given, a similar configuration to that of the plurality of first wires91according to the third embodiment may be adopted, as appropriate.

The first wires91A to91F,91H, and91I are each connected to one of the semiconductor chips4A to4F and4X, and the diode41X, and one of the plurality of leads1. The material of the first wires91A to91F,91H, and91I is not specifically limited and, for example, aluminum (Al) or copper (Cu) may be employed. The wire diameter of the first wires91A to91F is not specifically limited and, for example, may be approximately 250 to 500 μm. The first wires91A to91F,91H, and91I correspond to the first conductive material in the present disclosure. Here, for example leads formed of copper may be employed, in place of the first wires91A to91F,91H, and91I.

The collector electrode of the semiconductor chip4A and the cathode electrode of the diode41A are connected to each other, via the first portion11A and the conductive bonding material83. The collector electrode CP of the semiconductor chip4B and the cathode electrode of the diode41B are connected to each other, via the first portion11A and the conductive bonding material83. The collector electrode CP of the semiconductor chip C and the cathode electrode of the diode41C are connected to each other, via the first portion11A and the conductive bonding material83.

The first wire91A has one end connected to the emitter electrode of the semiconductor chip4A, an intermediate portion connected to the anode electrode of the diode41A, and the other end connected to the fourth portion14B of the lead1B. The number of first wires91A is not specifically limited. In the illustrated example, three first wires91A are provided.

The first wire91B has one end connected to the emitter electrode of the semiconductor chip4B, an intermediate portion connected to the anode electrode of the diode41B, and the other end connected to the fourth portion14C of the lead1C. The number of first wires91B is not specifically limited. In the illustrated example, three first wires91B are provided.

The first wire91C has one end connected to the emitter electrode of the semiconductor chip4C, an intermediate portion connected to the anode electrode of the diode41C, and the other end connected to the fourth portion14D of the lead1D. The number of first wires91C is not specifically limited. In the illustrated example, three first wires91C are provided.

The first wire91D has one end connected to the emitter electrode of the semiconductor chip4D, an intermediate portion connected to the anode electrode of the diode41D, and the other end connected to the fourth portion14E of the lead1E. The number of first wires91D is not specifically limited. In the illustrated example, three first wires91D are provided.

The first wire91E has one end connected to the emitter electrode of the semiconductor chip4E, an intermediate portion connected to the anode electrode of the diode41E, and the other end connected to the fourth portion14F of the lead1F. The number of first wires91E is not specifically limited. In the illustrated example, three first wires91E are provided.

The first wire91F has one end connected to the emitter electrode of the semiconductor chip4F, an intermediate portion connected to the anode electrode of the diode41F, and the other end connected to the fourth portion14G of the lead1G. The number of first wires91F is not specifically limited. In the illustrated example, three first wires91F are provided.

The first wire91H has one end connected to the anode electrode of the diode41X, and the other end connected to the second portion114H in the first portion11H of the lead1H. The number of first wires91H is not specifically limited. In the illustrated example, three first wires91H are provided.

The first wire91I has one end connected to the anode electrode of the semiconductor chip4X, and the other end connected to the fourth portion14I of the lead1I. The number of first wires91I is not specifically limited. In the illustrated example, three first wires91H are provided.

Regarding the second wire92according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the second wire92according to the third embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment. Regarding a portion or structure on which no specific description is given, a similar configuration to that of the second wire92of the semiconductor device A3may be adopted, as appropriate.

As shown inFIG. 71andFIG. 72, second wires92may be electrically connected to the control chip4G or4H. The material of the second wires92is not specifically limited and, for example, gold (Au) may be employed. The wire diameter of the second wires92is not specifically limited and, in this embodiment, finer than the first wires91A to91F. The wire diameter of the second wires92is, for example, approximately 10 μm to 50 μm. The second wires92correspond to the second conductive material in the present disclosure. In the subsequent description, the second wires92connected to the control chip4G will be referred to as second wires92G, and the second wires92connected to the control chip4H will be referred to as second wires92H.

A second wire92G is connected at one end to the gate electrode of the semiconductor chip4A, and at the other end to the second portion52aof the wiring50a. Likewise, another second wire92G is connected to the emitter electrode of the semiconductor chip4A and to the second portion52bof the wiring50b.

A second wire92G is connected to the gate electrode of the semiconductor chip4B and to the control chip4G. Another second wire92G is connected to the emitter electrode of the semiconductor chip4B and to the control chip4G.

A second wire92G is connected to the gate electrode of the semiconductor chip4C and to the control chip4G. Another second wire92G is connected to the emitter electrode of the semiconductor chip4C and to the control chip4G.

A second wire92H is connected to the gate electrode of the semiconductor chip4D and to the control chip4H. Another second wire92H is connected to the gate electrode of the semiconductor chip4E and to the control chip4H. Another second wire92H is connected to the gate electrode of the semiconductor chip4F and to the second portion52fof the wiring50f.

The second wires92according to this embodiment may include a second wire92G which is connected to the gate electrode of the semiconductor chip4X and to the second portion52hof the wiring50h, as shown inFIG. 70.

As shown inFIG. 71andFIG. 72, the plurality of third wires93are connected to one of the control chips4G and4H, as in the semiconductor device A3. The material of the third wire is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

As shown inFIG. 71andFIG. 72, the plurality of fourth wires94are connected to the transmission circuit chip4I and the primary-side circuit chip4J, as in the semiconductor device A3. The material of the fourth wire94is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

As shown inFIG. 71andFIG. 72, the plurality of fifth wires95are connected to the primary-side circuit chip4J and the conductive section5, as in the semiconductor device A3. The material of the fifth wire95is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

As shown inFIG. 71andFIG. 72, the plurality of sixth wires96are connected to the control chips4G and the conductive section5, as in the semiconductor device A3. The material of the sixth wire96is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

As shown inFIG. 71andFIG. 72, the plurality of seventh wires97are connected to the control chips4H and the conductive section5, as in the semiconductor device A3. The material of the seventh wires97is not specifically limited and, for example, a similar material to that of the second wire92may be employed.

Regarding the resin7according to this embodiment, although any of the elements is apparently given, for the sake of convenience of description, the same numeral as that of the resin7according to the second embodiment, it does not necessarily mean that the mentioned element has the same or similar configuration. The configuration of an element with a numeral is defined by the description relevant to this embodiment. Regarding a portion or structure on which no specific description is given, a similar configuration to that of the resin7of the semiconductor device A3may be adopted, as appropriate.

The resin7covers at least the semiconductor chips4A to4F and4X, the control chips4G and4H, the transmission circuit chip4I, the primary-side circuit chip4J, a part of each of the plurality of leads1, and a part of each of the plurality of leads2. In this embodiment, in addition, the resin7covers the diodes41A to41F and41X, the diodes49U,49V, and49W, the plurality of first wires91A to91F, the plurality of second wires92, the plurality of third wires93, the plurality of fourth wires94, the plurality of fifth wires95, the plurality of sixth wires96, and the plurality of seventh wires97. The material of the resin7is not specifically limited. Though not specifically limited, for example an insulative material such as an epoxy resin or silicone gel may be employed to form the resin7.

In this embodiment, the resin7includes a first face71, a second face72, a third face73, a fourth face74, a fifth face75, a sixth face76, a recess731, a recess732, a recess733, a hole741, and a hole742, which are similar to those of the semiconductor device A3.

FIG. 73is a schematic circuit diagram showing an electrical configuration of the semiconductor device A7. The circuit constituted of the semiconductor device A7includes the switching arms40U,40V, and40W, like the semiconductor device A1. Further, the circuit of the semiconductor device A7includes a switching circuit40B. The switching circuit40B is constituted of the semiconductor chip4X and the diode41X. To a node N4, the lead1H serving as the B terminal is connected.

In this embodiment, the lead1A is the P terminal. The lead1B is the U terminal. The lead1C is the V terminal. The lead1D is the W terminal. The lead1E is the NU terminal. The lead1F is the NV terminal. The lead1G is the NW terminal. The lead1H is the B terminal. The lead1I is the NB terminal. The lead2A is the VSU terminal. The lead2B is the VBU terminal. The lead2C is the VSV terminal. The lead2D is the VBV terminal. The lead2E is the VSW terminal. The lead2F is the VBW terminal. The lead2G is the first GND terminal. The lead2H is the first VCC terminal. The lead2I is the HIND terminal. The lead2J is the HINV terminal. The lead2K is the HINW terminal. The lead2L is the LINU terminal. The lead2M is the LINV terminal. The lead2N is the LINW terminal. The lead2P is the FO terminal. The lead2Q is the third VCC terminal. The lead2R is the third GND terminal. The lead2S is the CIN terminal. The lead2T is the second VCC terminal. The lead2U is the second GND terminal. The lead2V is the Bin terminal.

This embodiment provides similar advantageous effects to those provided by the semiconductor device A3. Further, the switching circuit40B constituted of the semiconductor chip4X and the diode41X enables, for example, control of a braking operation, in addition to operation control of a three-phase AC motor using the switching arms40U,40V, and40W.

Arranging the semiconductor chip4X and the diode41X so as to overlap as viewed in the y-direction suppresses an increase in size of the semiconductor device A7in the x-direction. Arranging the second portion114A of the first portion11A and the second portion114H of the first portion11H so as to overlap as viewed in the y-direction suppresses an increase in size of the semiconductor device A7in the x-direction. Arranging the second portion114H so as to overlap with the diode41X as viewed in the x-direction allows the length of the first wire91H to be shortened.

Locating the second portion52hon the side of the third face33in the x-direction with respect to the first portion113H, and so as to overlap with the semiconductor chip4X as viewed in the x-direction, allows the length of the second wire92G, connected to the gate electrode of the semiconductor chip4X and the second portion52h, to be shortened.

First Variation of Seventh Embodiment

FIG. 74illustrates a first variation of the semiconductor device A7. The semiconductor device A71according to this variation may be configured in the same way as the semiconductor device A7, except for the configuration described hereunder.

The second portion52haccording to this variation is located on the side of the third face33in the x-direction with respect to the first portion51h, and spaced therefrom. The second portion52his located on the side of the sixth face36in the y-direction with respect to the first portion51h, and spaced therefrom. The second portion52hoverlaps with the first base portion55, as viewed in the x-direction. The second portion52his located on the side of the fifth face35in the y-direction, with respect to the bonding section6H. The second portion52hoverlaps with the bonding section6H, as viewed in the y-direction. The shape of the second portion52his not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52hhas a rectangular shape.

The first portion11A of the lead1A according to this variation includes a first portion113A and a second portion114A.

The first portion113A occupies a majority of the first portion11A. The first portion113A overlaps with the second base portion56and the wirings50a,50b, and50h, as viewed in the y-direction.

The second portion114A is connected to the first portion113A on the side of the third face33, in the x-direction. The center of the second portion114A in the y-direction is located on the side of the sixth face36, with respect to the center of the first portion113A in the y-direction. In the illustrated example, the edge of the first portion113A on the side of the sixth face36in the y-direction, and the edge of the second portion114A on the side of the fifth face35in the y-direction generally coincide with each other, as viewed in the x-direction. Here, the expression “generally coincide” as viewed in the x-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion113A or second portion114A in the y-direction).

The first portion11H of the lead1H according to this variation includes a first portion113H and a second portion114H.

The first portion113H occupies a majority of the first portion11H. The first portion113H is located on the side of the third face33with respect to the first portion113A, as viewed in the x-direction. The first portion113H overlaps with the first portion113A, as viewed in the x-direction. The first portion113H is located on the side of the fifth face35in the y-direction, with respect to the second portion114A. The first portion113H overlaps with the second portion114A, as viewed in the y-direction.

The second portion114H is connected to the first portion113H on the side of the sixth face36, in the y-direction. The center of the second portion114H in the x-direction is located on the side of the third face33, with respect to the center of the first portion113H in the x-direction. The second portion114H overlaps with the second portion114A, as viewed in the x-direction. The second portion114H is spaced apart from the second portion114A, as viewed in the y-direction. In the illustrated example, the edge of the first portion113H on the side of the third face33in the x-direction, and the edge of the second portion114H on the side of the third face33in the x-direction generally coincide with each other, as viewed in the y-direction. Here, the expression “generally coincide” as viewed in the y-direction refers to, for example, exactly coinciding with each other, or being deviated by within ±5% of the characteristic size (size of the first portion113H or second portion114H in the x-direction).

In this variation, the semiconductor chip4X is located on the first portion113H in the first portion11H of the lead1H. Here, the number of semiconductor chips to be mounted on the lead1H is by no means limited. In the illustrated example, the collector electrode of the semiconductor chip4X is bonded to the first portion11H, via the conductive bonding material83. The semiconductor chip4X overlaps with the semiconductor chips4A,4B, and4C, as viewed in the x-direction.

The diode41X is mounted on the second portion114A of the first portion11A. The diode41X overlaps with the semiconductor chip4X, as viewed in the y-direction. The diode41X overlaps with the diodes41A,41E, and41C, as viewed in the x-direction. In addition, the diode41X overlaps with the second portion114H, as viewed in the x-direction.

In this variation, the first wire91H is connected to the anode electrode of the diode41X, and the fourth portion14H of the lead1H.

This variation also provides similar advantageous effects to those provided by the semiconductor device A7. As is apparent from this variation, the location of the semiconductor chip4X and the diode41X is not specifically limited, but may be modified in various manners.

Second Variation of Seventh Embodiment

FIG. 75illustrates a second variation of the semiconductor device A7. The semiconductor device A72according to this variation may be configured in the same way as the semiconductor devices A7and A71, except for the configuration described hereunder.

The second portion52haccording to this variation is located on the side of the third face33in the x-direction with respect to the first portion51h, and spaced therefrom. The second portion52his located on the side of the sixth face36in the y-direction with respect to the first portion51h, and spaced therefrom. The second portion52hoverlaps with the first base portion55, as viewed in the x-direction. The second portion52his located on the side of the fifth face35in the y-direction with respect to the bonding section6H. The second portion52hoverlaps with the bonding section6H, as viewed in the y-direction. The shape of the second portion52his not specifically limited, and a desired shape may be selected from a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, and so forth. In the illustrated example, the second portion52hhas a rectangular shape.

The first portion11H of the lead1H according to this variation is located on the side of the third face33in the x-direction, with respect to the first portion11A. The first portion11H overlaps with the first portion11A, as viewed in the x-direction.

In this variation, the semiconductor chips4A to4F are a metal-oxide-semiconductor field-effect transistor (MOSFET) formed on a silicon carbide (SiC) substrate, in other words SiC MOSFET. The semiconductor chip4X is a transistor configured as an IGBT.

The semiconductor device A72according to this variation includes the diode41X. The diode41X is mounted on the first portion11A of the lead1A, together with the semiconductor chips4A to4C. The diode41X overlaps with the semiconductor chips4A to4C and the semiconductor chip4X, as viewed in the x-direction.

This variation also provides similar advantageous effects to those provided by the semiconductor devices A7and A71. In addition, as is apparent from this variation, the specific configuration of the semiconductor chips4A to4F is not specifically limited, but may be modified in various manners.

The semiconductor device and the manufacturing method thereof according to the present disclosure are not limited to the foregoing embodiments. The specific arrangement of the semiconductor device and the manufacturing method thereof according to the present disclosure may be modified in various manners.

Terms and numerals in eighth and subsequent embodiments will be independently defined, from those of the first to seventh embodiments, unless otherwise specifically noted. However, two or more elements or arrangements according to the embodiments and variations of the present disclosure may be combined as desired, unless contradiction is incurred.

Eighth Embodiment

Referring toFIG. 76toFIG. 83, a semiconductor package1according to the eighth embodiment will be described.

The semiconductor package1according to this embodiment includes a circuit similar to that of the semiconductor device A2shown inFIG. 49.

Semiconductor chips41X to46X have the same structure as the semiconductor chip4A shown inFIG. 32. However, the structure of the semiconductor chips41X to46X may be modified in various manners, without limitation to the structure shown inFIG. 32.

Diodes41Y to46Y have the same structure as the diode41A shown inFIG. 33andFIG. 34. However, the structure of the diodes41Y to46Y may be modified in various manners, without limitation to the structure shown inFIG. 33andFIG. 34.

As shown inFIG. 76, the semiconductor package1according to this embodiment includes lead frames20. The lead frames20have an L-shape, as viewed in a first direction X. The lead frames20according to this embodiment include lead frames20A to20G,20X, and lead frames28A to28U. The lead frames20A to20D exemplify a first lead frame, and the lead frames203to20G exemplify a third lead frame. The lead frames28A to28U exemplify a second lead frame.

The lead frames20A to20D are located on a first main surface31of a substrate30, in a second region30A of the substrate30. The lead frames20A to20D are each partially covered with a first resin10, and partially exposed from the first resin10. The lead frames20E to20G are spaced apart from the substrate30. The lead frames20E to20G are each partially covered with the first resin10, and partially exposed from the first resin10. The lead frames20H to20W are located on the first main surface31of the substrate30, in a first region30B of the substrate30. The lead frames20H to20W are each partially covered with the first resin10, and partially exposed from the first resin10. In one direction along the planar direction of the substrate30(second direction Y), the lead frames20A to20D are formed so as to extend beyond a third edge35of the substrate30from the position overlapping therewith, in a plan view. The lead frames20H to20W are formed so as to extend beyond a fourth edge36of the substrate30from the position overlapping therewith, in a plan view. In addition, in one direction along the planar direction of the substrate30(second direction Y), the lead frames20E to20G are formed so as to extend beyond the third edge35of the substrate30from the position overlapping therewith, in a plan view.

The lead frames20A to20G constitute conduction paths for electrically connecting, for example, the semiconductor chips41X to46X and the diodes41Y to46Y. The lead frames20A to20D are spaced apart from each other in the first direction X. The lead frames20A to20D are aligned in the order of the lead frame20A, the lead frame20B, the lead frame20C, and the lead frame20D in the first direction X, from the side of the second edge34toward the first edge33of the substrate30. The lead frames20E to20G are located on the opposite side of the lead frame20C across the lead frame20D, in the first direction X. The lead frames20E to20G are located on the outer side of the substrate30, in the first direction X. The lead frame20X and the lead frame20Y each constitute, for example, an auxiliary terminal. The lead frame20X and the lead frame20Y are each located on the side of a first face11of the first resin10in the first direction X, with respect to the substrate30. The lead frame20X is spaced apart from the substrate30, in the first direction X.

The lead frame20A serves to electrically connect, for example, a third electrode DP (e.g., drain electrode pad of the transistor) of the semiconductor chips41X to43X and an external power source.

The semiconductor chips41X to43X each have the third electrode DP bonded to an island portion21a, via a bonding material SD1. More specifically, the semiconductor chip4I is bonded to a region Ra1of the island portion21a, via the bonding material SD1. The semiconductor chip42is bonded to a region Ra2of the island portion21a, via the bonding material SD1. The semiconductor chip4B is bonded to a region Ra3of the island portion21a, via the bonding material SD1. An example of the bonding material SD1is solder. Here, the bonding material may be any material that can physically bond and electrically connect the third electrode DP of the semiconductor chips41to43and the island portion21a. A metal paste may be employed as the bonding material SD1, instead of solder. An example of the metal paste is silver paste. Here, even though the bonding material SD1used for bonding the island portion21aand the semiconductor chips41to43protrudes from the regions Ra1to Ra3, the bonding material SD1flows into grooves21dand21eof the island portion21a. Therefore, the bonding material SD1can be prevented from protruding into a region other than an element mounting region Rse of the island portion21a.

A bonding section31A and a bonding material SD2, for example having a plate shape, are interposed between the island portion21aof the lead frame20A and the substrate30. In a plan view, the bonding section31A and the bonding material SD2overlap with each other. The bonding section31A is formed on the first main surface31of the substrate30, so as to oppose generally the entirety of the island portion21a. For example, the bonding section31A is opposed to a portion of the island portion21acorresponding to 95% to 100% of its entirety. Accordingly, the entirety of the face of the island portion21aopposed to the substrate30, and the first main surface31of the substrate30, are in contact with each other via the bonding section31A and the bonding material SD2. The bonding section31A is formed by sintering a metal material (second conductive material). For example, a metal paste (second metal paste) may be employed to form the second conductive material. Examples of the second metal paste (second conductive material) include metal paste such as silver (Ag) paste, copper (Cu) paste, or gold (Au) paste. In this embodiment, the bonding section31A is formed, for example, by sintering the silver paste. The bonding material SD2is applied over the bonding section31A. The bonding material SD2is applied over the entire surface of the bonding section31A. The island portion21ais bonded to the substrate30, via the bonding material SD2.

The lead frame20B is, for example, electrically connected to the third electrode DP of the semiconductor chip44X. The lead frame20B is electrically connected, for example, to an electrical apparatus (e.g., a motor) driven by the semiconductor package1. The lead frame20C is, for example, electrically connected to the third electrode DP of the semiconductor chip45X. The lead frame20C is electrically connected, for example, to the electrical apparatus. The lead frame20D is, for example, electrically connected to the third electrode DP of the semiconductor chip46X. The lead frame20C is electrically connected, for example, to the electrical apparatus. In an example, a motor is employed as the electrical apparatus, in which case the lead frame20B is electrically connected to a first coil (not shown) of the motor, the lead frame20C is electrically connected to a second coil (not shown) of the motor, and the lead frame20D is electrically connected to a third coil (not shown) of the motor. However, the connection arrangement between the first coil, the second coil, and the third coil of the motor and the lead frames20B to20D is not limited to the above, but may be modified as desired.

The portion of the lead frames20B to20D where the semiconductor chips44X to46X are respectively located will be referred to as an island portion22a. The size of the island portion22ain the second direction Y is larger than the size thereof in the first direction X.

The third electrode DP of the semiconductor chip44X is bonded to the element mounting region Rse of the island portion22aof the lead frame20B, via a bonding material SD3, the third electrode DP of the semiconductor chip45X is bonded to the element mounting region Rse of the island portion22aof the lead frame20C, via a bonding material SD4, and the third electrode DP of the semiconductor chip46X is bonded to the element mounting region Rse of the island portion22aof the lead frame20D, via a bonding material SD5. The bonding materials SD3to SD5may each be solder. Thus, the semiconductor chip44X and the lead frame20B are electrically connected, the semiconductor chip45X and the lead frame20C are electrically connected, and the semiconductor chip46X and the lead frame20D are electrically connected.

A bonding section31B and a bonding material SD6, for example having a plate shape, are interposed between the island portion22aof the lead frame20B and the substrate30. In a plan view, the bonding section31B and the bonding material SD6overlap with each other. A bonding section31C and a bonding material SD7, for example having a plate shape, are interposed between the island portion22aof the lead frame20C and the substrate30. In a plan view, the bonding section31C and the bonding material SD7overlap with each other. A bonding section31D and a bonding material SD8, for example having a plate shape, are interposed between the island portion22aof the lead frame20D and the substrate30. In a plan view, the bonding section31D and the bonding material SD8overlap with each other. The bonding materials SD6to SD8may each be solder. The bonding sections31B to31D are formed on the first main surface31of the substrate30, so as to respectively oppose generally the entirety of the island portions22a. For example, the bonding section31B is opposed to a portion of the island portion22aof the lead frame20B, corresponding to 95% to 100% of the entirety of the island portion22a. For example, the bonding section31C is opposed to a portion of the island portion22aof the lead frame20C, corresponding to 95% to 100% of the entirety of the island portion22a. For example, the bonding section31D is opposed to a portion of the island portion22aof the lead frame20D, corresponding to 95% to 100% of the entirety of the island portion22a. Accordingly, the entirety of the face of the island portions22aopposed to the substrate30, and the first main surface31of the substrate30, are in contact with each other, via the bonding sections31B to31D and the bonding materials SD6to SD8. The bonding sections31B to31D are each formed by sintering a metal material (first conductive material). For example, a metal paste may be employed to form the first conductive material. Examples of the metal paste include silver (Ag) paste, copper (Cu) paste, and gold (Au) paste. In this embodiment, the bonding sections31B to31D are formed, for example, by sintering the silver paste. The bonding materials SD6to SD8are respectively applied over the bonding sections31B to31D. The bonding materials SD6to SD8are respectively applied over the entire surface of the bonding sections31B to31D. The island portions22aare bonded to the substrate30, via the bonding materials SD6to SD8.

The lead frames20E to20G are, for example, electrically connected to a first electrode SP of the semiconductor chips44X to46X and the diodes44Y to46Y, respectively. The lead frames20E to20G are spaced apart from the substrate30. The portion of the lead frames20E to20G where wires24D,24E, and24F are connected will be referred to as an island portion23a.

The semiconductor chips41X to46X and the diodes41Y to46Y are respectively connected to the lead frames20B to20G, via a second connection material (fourth conductive material). In this embodiment, the wires24A to24F are employed, as examples of the second connection material (fourth conductive material). The wires24A to24F are, for example, formed of aluminum (Al). Alternatively, the wires24A to24F may be formed of copper (Cu). The wires24A to24F are respectively connected to the semiconductor chips41to46and the lead frames20A to20G, for example by ball bonding or wedge bonding. The wire diameters of the wires24A to24F are equal to each other. In an example, it is preferable that the wires24A to24F have a wire diameter of 300 to 400 μm. In this embodiment, the wire diameter of the wires24A to24F is approximately 300 μm.

In this embodiment, each of the wires24A to24F is a single-line wire. The wires24A to24F are arranged generally parallel to each other. Here, the term “generally parallel” refers to a state where one or more of the wires24A to24F are inclined by within ±5° from a perfectly parallel state. At least one of the wires24A to24F may be composed of a plurality of wires. In this case, the wire composed of a plurality of wires among the wires24A to24F may have a finer diameter than that of a wire among the wires24A to24F formed of a single-line wire.

The semiconductor package1includes, as shown inFIG. 79, the semiconductor chips41X to46X, which are transistors configured as IGBT. The semiconductor chips41X to43X constitute a first transistor. The semiconductor chip44X to46X constitute a second transistor. The semiconductor package1also includes the diodes41Y to46Y. The semiconductor chips41X to46X each include, on the surface thereof, a first electrode (e.g., emitter electrode) and a second electrode (e.g., gate electrode exemplifying the control terminal). The semiconductor chips41X to46X each include the third electrode (e.g., collector electrode) on the back surface thereof. The diodes41Y to46Y each include a first electrode (e.g., anode) on the surface thereof. The diodes41Y to46Y each include a second electrode (e.g., cathode) on the surface thereof.

The diode41Y is reversely connected to the semiconductor chip41X. More specifically, the first electrode (e.g., anode) of the diode41Y is connected to the first electrode (e.g., emitter) of the semiconductor chip41X, and the second electrode (e.g., cathode) of the diode41Y is connected to the third electrode (e.g., collector) of the semiconductor chip41X.

The diode42Y is reversely connected to the semiconductor chip42X. The diode43Y is reversely connected to the semiconductor chip43X. The diode44Y is reversely connected to the semiconductor chip44X. The diode45Y is reversely connected to the semiconductor chip45X. The diode46Y is reversely connected to the semiconductor chip46X. The connection arrangement between the diodes42Y to46Y and the semiconductor chips42X to46X is the same as that between the diode41Y and the semiconductor chip41X.

The semiconductor chips41X to43X and the diodes41Y to43Y are mounted on the island portion21aof the lead frame20A shown inFIG. 79. The element mounting region Rse of the lead frame20A shown inFIG. 79has, for example, a rectangular shape in a plan view. In an example, the element mounting region Rse of the lead frame20A has the long sides extending along the first direction X. On the lead frame20A, the element mounting region Rse and the remaining region of the island portion21aare isolated from each other by the groove21d. The element mounting region Rse is located in a region of the island portion21aon the side of the fourth edge36, in the second direction Y.

The element mounting region Rse is partitioned into six regions, namely regions Ra1to Ra6, by the groove21e. The six regions Ra1to Ra6are defined by dividing the element mounting region Rse into three regions in the first direction X and into two regions in the second direction Y. The three regions Ra1to Ra3are formed on the side of the fourth edge36in the element mounting region Rse, in the second direction Y. The three regions Ra4to Ra6are formed on the side of the third edge35in the element mounting region Rse, in the second direction Y. The region Ra1and the region Ra4are aligned along the second direction Y. The region Ra2and the region Ra5are aligned along the second direction Y. The region Ra3and the region Ra6are aligned along the second direction Y. The region Ra2is located between the region Ra1and the region Ra3, in the first direction X.

The region Ra1is located on the side of the second edge34, with respect to the region Ra2. The region Ra3is located on the side of the first edge33, with respect to the region Ra2. The regions Ra1to Ra3each have, for example, a rectangular shape in a plan view. In an example, the regions Ra1to Ra3each have the long sides extending along the second direction Y. The sizes of the regions Ra1to Ra3in the first direction X are equal to each other. The sizes of the regions Ra1to Ra3in the second direction Y are equal to each other. Here, the sizes of the regions Ra1to Ra3in the first direction X may differ from each other by within ±5%. The sizes of the regions Ra1to Ra3in the second direction Y may differ from each other by within ±5%.

The regions Ra4to Ra6each have, for example, a rectangular shape in a plan view. The regions Ra1to Ra3each have the long sides extending along the second direction Y. The sizes of the regions Ra4to Ra6in the first direction X are equal to each other. The sizes of the regions Ra4to Ra6in the second direction Y are equal to each other. The sizes of the regions Ra1to Ra3in the first direction X are equal to the sizes of the regions Ra4to Ra6in the first direction X. The sizes of the regions Ra1to Ra3in the second direction Y are larger than the sizes of the regions Ra4to Ra6in the second direction Y. Here, the sizes of the regions Ra4to Ra6in the first direction X may differ from each other by within ±5%. The sizes of the regions Ra4to Ra6in the first direction X may differ from the sizes of the regions Ra1to Ra3in the first direction X, by within ±5%. The sizes of the regions Ra4to Ra6in the second direction Y may differ from each other by within ±5%.

In the region Ra1, the semiconductor chip41X is mounted. The semiconductor chip41X is located on the side of the fourth edge36in the second direction Y, with respect to the center of the region Ra1in the second direction Y. In the region Ra2, the semiconductor chip42X is mounted. The semiconductor chip42X is located on the side of the fourth edge36in the second direction Y, with respect to the center of the region Ra2in the second direction Y. In the region Ra3, the semiconductor chip43X is mounted. The semiconductor chip43X is located on the side of the fourth edge36in the second direction Y, with respect to the center of the region Ra3in the second direction Y. The semiconductor chips41X to43X are located so as to overlap with each other, as viewed in the first direction X.

In the region Ra4, the diode41Y is mounted. In the region Ra5, the diode42Y is mounted. In the region Ra6, the diode43Y is mounted. In this embodiment, the diode41Y is located on the side of the third edge35in the second direction Y, with respect to the center of the region Ra4in the second direction Y. The diode42Y is located on the side of the third edge35in the second direction Y, with respect to the center of the region Ra5in the second direction Y. The diode43Y is located on the side of the third edge35in the second direction Y, with respect to the center of the region Ra6in the second direction Y. The diodes41Y to43Y are located so as to overlap with each other, as viewed in the first direction X.

The semiconductor chips44X to46X and the diodes44Y to46Y are respectively mounted on the island portions22aof the lead frames20B to20D shown inFIG. 79. The respective element mounting regions Rse of the lead frames20B to20D have the same shape. The element mounting regions Rse of the lead frame20B to20D have, for example, a rectangular shape in a plan view. In an example, the element mounting regions Rse of the lead frames20B to20D have the long sides extending along the second direction Y. The sizes of the element mounting regions Rse of the lead frames20B to20D in the second direction Y are equal to the size of the element mounting region Rse of the lead frame20A in the second direction Y. Here, the sizes of the element mounting regions Rse of the lead frames20B to20D in the second direction Y may differ from the size of the element mounting region Rse of the lead frame20A in the second direction Y, by within ±5%.

In each of the lead frames20B to20D, the element mounting region Rse and the remaining region of the island portion22aare separated by a groove22f. The element mounting region Rse in each of the lead frames20B to20D is divided into two regions Ra7and Ra8, by a groove22m. The region Ra7and the region Ra8are aligned along the second direction Y. The region Ra7is located on the side of the fourth edge36in the second direction Y, with respect to the center of the element mounting region Rse in the second direction Y. The region Ra7has, for example, a rectangular shape in a plan view. In an example, the region Ra7has the long sides extending along the second direction Y. The region Ra8is located on the side of the third edge35in the second direction Y, with respect to the center of the element mounting region Rse in the second direction Y. The size of the region Ra7in the first direction X is equal to the sizes in the first direction X of the regions Ra1to Ra3of the element mounting region Rse of the lead frame20A. The size of the region Ra7in the second direction Y is equal to the sizes in the second direction Y of the regions Ra1to Ra3of the element mounting region Rse of the lead frame20A. The size of the region Ra8in the first direction X is equal to the sizes in the first direction X of the regions Ra4to Ra6of the element mounting region Rse of the lead frame20A. The size of the region Ra8in the second direction Y is equal to the sizes in the second direction Y of the regions Ra4to Ra6of the element mounting region Rse of the lead frame20A. Therefore, the region Ra7is larger in area than the region Ra8, and the region Ra7is larger in size in the second direction Y, than the region Ra8. Here, the size of the region Ra7in the first direction X may differ from the respective sizes in the first direction X of the regions Ra1to Ra3of the lead frame20A, by within ±5%. The size of the region Ra7in the second direction Y may differ from the respective sizes in the second direction Y of the regions Ra1to Ra3of the lead frame20A, by within ±5%. The size of the region Ra8in the first direction X may differ from the respective sizes in the first direction X of the regions Ra4to Ra6of the lead frame20A, by within ±5%. The size of the region Ra8in the second direction Y may differ from the respective sizes in the second direction Y of the regions Ra4to Ra6of the lead frame20A, by within ±5%.

In the region Ra7of the lead frame20B, the semiconductor chip44X is mounted. The semiconductor chip44X is located on the side of the fourth edge36in the second direction Y, with respect to the center of the region Ra7of the lead frame20B in the second direction Y. In the region Ra7of the lead frame20C, the semiconductor chip45X is mounted. The semiconductor chip45X is located on the side of the fourth edge36in the second direction Y, with respect to the center of the region Ra7of the lead frame20C in the second direction Y. In the region Ra7of the lead frame20D, the semiconductor chip46X is mounted. The semiconductor chip46X is located on the side of the fourth edge36in the second direction Y, with respect to the center of the region Ra7of the lead frame20D in the second direction Y. The semiconductor chips44X to46X are located so as to overlap with each other, as viewed in the first direction X. The semiconductor chips41X to43X are located so as to overlap with each other, as viewed in the first direction X. In addition, the semiconductor chips41to46X are located so as to overlap with each other, as viewed in the first direction X.

In the region Ra8of the lead frame20B, the diode44Y is mounted. In the region Ra8of the lead frame20C, the diode45Y is mounted. In the region Ra8of the lead frame20D, the diode46Y is mounted. In this embodiment, the diode44Y is located on the side of the third edge35in the second direction Y, with respect to the center of the region Ra8of the lead frame20B in the second direction Y. The diode45Y is located on the side of the third edge35in the second direction Y, with respect to the center of the region Ra8of the lead frame20C in the second direction Y. The diode46Y is located on the side of the third edge35in the second direction Y, with respect to the center of the region Ra8of the lead frame20D in the second direction Y.

The semiconductor chip41X, the diode41Y, and the lead frame20B are connected via the same wire24A. The semiconductor chip42X, the diode42Y, and the lead frame20C are connected via the same wire24B. The semiconductor chip43X, the diode43Y, and the lead frame20D are connected via the same wire24C. More specifically, the wire24A connected to the first electrode of the semiconductor chip41X includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the second direction Y, for connection to the first electrode of the diode41Y. The second portion extends obliquely, to connect the first electrode of the diode41Y and a wire bonding section22lof the lead frame20B. In addition, the connection arrangement among the semiconductor chip42X, the diode42Y, and the lead frame20C via the wire24B, and the connection arrangement among the semiconductor chip43X, the diode43Y, and the lead frame20D via the wire24C are the same as the connection via the wire24A.

The semiconductor chip44X, the diode44Y, and the lead frame20E are connected via the same wire24D. The semiconductor chip45X, the diode45Y, and the lead frame20F are connected via the same wire24E. The semiconductor chip46X, the diode46Y, and the lead frame20G are connected via the same wire24F. More specifically, the wire24D connected to the source of the semiconductor chip44X includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the second direction Y, for connection to the anode of the diode44Y. The second portion extends obliquely, to connect the first electrode of the diode44Y and the island portion23aof the lead frame20E. The connection arrangement among the semiconductor chip45X, the diode45Y, and the lead frame20F via the wire24E, and the connection arrangement among the semiconductor chip46X, the diode46Y, and the lead frame20F via the wire24F are the same as the connection via the wire24D.

The lead frames20include the lead frames28A to28U, exemplifying the second lead frame. The lead frames28A to28H and the lead frames28S to28U constitute terminals of a secondary-side circuit. The lead frames28I to28R constitute terminals of a primary-side circuit. Thus, the lead frames20include a plurality of secondary-side lead frames including the lead frames28A to28H and28S to28U, and a plurality of primary-side lead frames including the lead frames28I to28R, as the second lead frames. As seen fromFIG. 76, the terminals of the secondary-side circuit are arranged such that the lead frames28A to28H and the lead frames28S to28U are spaced apart from each other in the first direction X. More specifically, the lead frames28A to28H are located on the side of a second face12of the first resin10in the first direction X, with respect to the lead frames28S to28U. The lead frames28S to28U are located on the side of a first face11of the first resin10, with respect to the lead frames28I to28R. Accordingly, the lead frames28I to28R are located between the lead frames28A to28H and the lead frames28S to28U, in the first direction X.

A distance between the lead frames28A to28H and the lead frames28I to28R in the first direction X, in other words a distance DQ1between the lead frame28H and the lead frame28I in the first direction X, is longer than a first gap G1. A distance between the lead frames28I to28R and the lead frames28S to28U in the first direction X, in other words a distance DQ2between the lead frame28R and the lead frame28S in the first direction X, is longer than the first gap G1. The distance DQ2is equal to the distance DQ1. Thus, the distance DQ1between the lead frames28A to28H, which are the secondary-side lead frames, and the lead frames28I to28R, which are the primary-side lead frames, is longer than the array pitch of the lead frames28A to28H, which are the secondary-side lead frames. In addition, the distance DQ2between the lead frames28S to28U, which are the secondary-side lead frames, and the lead frames28I to28R, which are the primary-side lead frames, is longer than the array pitch of the lead frames28A to28H, which are the secondary-side lead frames. Here, the distance DQ2may differ from the distance DQ1, by within ±5%.

The clearances between the lead frame28A and the lead frame283, between the lead frame28C and the lead frame28D, between the lead frame283and the lead frame28F, and between the lead frame28G and the lead frame28H are equal to the first gap G1. The clearances between the lead frame28S and the lead frame28T, and between the lead frame28T and the lead frame28U correspond to a third gap G3which is narrower than the first gap G1. In addition, the clearances between the lead frames adjacent to each other in the first direction X, among the lead frames28I to28R, correspond to a second gap G2narrower than the first gap G1. Thus, the array pitch of the lead frames28I to28R which are the primary-side lead frames is narrower than the array pitch of the lead frames28A to28H which are the secondary-side lead frames. In an example, the second gap G2and the third gap G3may be equal to each other. In other words, the array pitch of the lead frames28S to28U may be equal to the array pitch of the lead frames28I to28R. Here, the first resin10includes a recess18xformed between the lead frame28B and the lead frame28C. The first resin10also includes a recess18yformed between the lead frame28D and the lead frame28E. Further, the first resin10includes a recess18zformed between the lead frame28F and the lead frame28G.

In a plan view of the semiconductor package1, the positions of the distal end of respective terminal portions28bof the lead frames28I to28R, which are the primary-side lead frames, are different from the positions of the distal end of the respective terminal portions28bof the lead frames28A to28H and28S to28U, which are the secondary-side lead frames. In this embodiment, in a plan view of the semiconductor package1, the positions of the distal end of the terminal portions28bof the lead frames28I to28R, which are the primary-side lead frames, are more distant from the first resin10, than the positions of the distal end of the terminal portions28bof the lead frames28A to28H and28S to28U, which are the secondary-side lead frames. In other words, the projection length of all the lead frames28I to28R, which are the primary-side lead frames, from the fourth edge36of the substrate30(seeFIG. 79) is longer than the projection length of all the lead frames28A to28H and28S to28U, which are the secondary-side lead frames, from the fourth edge36of the substrate30.

As shown inFIG. 76, the first resin10includes through holes19aand19b. The through holes19aand19bare used to attach the semiconductor package1to a heat dissipation device such as a heatsink (not shown), with a screw or the like.

As understood fromFIG. 78, the substrate30is provided such that the second main surface32is flush with a sixth face16of the first resin10, and that the second main surface32of the substrate30is exposed from the first resin10.

Referring now toFIG. 79, an example of the internal structure of the semiconductor package1according to this embodiment will be described hereunder. Hatched regions inFIG. 79each indicate a portion of the lead frame20bent and extending toward a fifth face15of the first resin10. Dash-dot lines inFIG. 79are auxiliary lines for explaining the positional relation among the components.

As shown inFIG. 79, the semiconductor package1according to this embodiment includes the semiconductor chips41X to46X and the diodes41Y to46Y. The second electrode GP of each of the semiconductor chips41X to46X is located in a recess formed close to the end portion of the first electrode SP on the side of the fourth edge36of the substrate30, and in the central position of the first electrode SP in the first direction X. Here, the size of the semiconductor chips41X to46X and the position of the second electrode GP in this embodiment may be modified as desired.

As shown inFIG. 79and as mentioned above, the lead frames28B and28C are located on the respective sides of the recess18xof the first resin10, the lead frames28D and28E are located on the respective sides of the recess18y, and the lead frames28F and28G are located on the respective sides of the recess18z. Accordingly, the clearance between the lead frames28A and28B in the first direction X, the clearance between the lead frames28C and28D, the clearance between the lead frames28E and28F, and the clearance between the lead frames28G and28H are wider than the clearances between the frames adjacent to each other in the first direction X among the lead frames28I to28R, and the clearances between the frames adjacent to each other in the first direction X among the lead frames28S to28U. The lead frames28A to28U are connected to the first region30B of the substrate30. More specifically, the lead frames28A to28D are connected to the end portion of the first region30B on the side of the second edge34, in the first direction X. The lead frames28D to28R are connected to the end portion of the first region30B on the side of the fourth edge36, in the second direction Y. The lead frames28S to28U are connected to the end portion of the first region30B on the side of the first edge33, in the first direction X.

As shown inFIG. 79, the lead frames28A to28U constitute conduction paths for electrically connecting control chips47and48, and the primary-side circuit chip160X. The lead frames28A to28U each include a bonding portion28a, the terminal portion28b, and an intermediate portion28c, each of which will be described hereunder. A portion of the lead frames28A to28U located on the substrate30will be referred to as the bonding portion28a. The portion of the lead frames28A to28U sticking out from the fourth face14of the first resin10will be referred to as the terminal portion28b. A portion of the lead frames28A to28U connecting the bonding portion28aand the terminal portion28bwill be referred to as the intermediate portion28c. The bonding portion28aincludes a through hole28dformed so as to penetrate therethrough in the plate thickness direction. The lead frames28A to28U are connected to the substrate30via a bonding material SD9. The terminal portion28bhas an L-shape as viewed in the first direction X. In this embodiment, the lead frames28A to28U each include the bonding portion28a, the terminal portion28b, and the intermediate portion28cthat are integrally formed. However, at least one of the lead frames28A to28U may be formed by connecting the individual pieces of the bonding portion28a, the terminal portion28b, and the intermediate portion28c. In addition, at least one of the lead frames28A to28U may be formed such that one of the bonding portion28aand the terminal portion28bis integrally formed with the intermediate portion28c, and the other of the bonding portion28aand the terminal portion28bis connected to the intermediate portion28c.

The respective bonding portions28aof the lead frames28A to28H, which are the secondary-side lead frames, are located on the side of the second edge34of the substrate30in the first direction X, with respect to the center of the first region30B in the first direction X. The lead frames28A to28H are each electrically connected to the control chip47. The respective bonding portions28aof the lead frames28S to28T, which are the secondary-side lead frames, are located close to the end portion of the first region30B on the side of the first edge33of the substrate30, in the first direction X. The lead frames28S to28T are each electrically connected to the control chip48. The lead frames28A to28H are each electrically connected to the control chip47. The respective bonding portions28aof the lead frames28I to28R, which are the primary-side lead frames, are located in the first region30B, at a position between the bonding portions28aof the lead frames28A to28H, and the bonding portions28aof the lead frames28S to28T, in the first direction X. The lead frames28I to28R are each electrically connected to the primary-side circuit chip160X.

The lead frames28A to28H include, as examples of the terminal of the semiconductor package1, the first GND terminal, the first VCC terminal, the VSU terminal, the VBU terminal, the VSV terminal, the VBV terminal, the VSW terminal, and the VBW terminal. InFIG. 79, the lead frame28A constitutes the first GND terminal. The lead frame28B constitutes the first VCC terminal. The lead frame28C constitutes the VSU terminal. The lead frame28D constitutes the VBU terminal. The lead frame28E constitutes the VSV terminal. The lead frame28F constitutes the VBV terminal. The lead frame28G constitutes the VSW terminal. The lead frame28H constitutes the VBW terminal. The first VCC terminal supplies a source voltage VCC to the control chip47. The VSU terminal and the VBU terminal constitute a boot strap circuit including the diode49U. The VSV terminal and the VBV terminal constitute a boot strap circuit including the diode49V. The VSW terminal and the VBW terminal constitute a boot strap circuit including the diode49W. Here, the correspondence between the lead frames28A to28H and the mentioned terminals is not limited toFIG. 79, but may be modified as desired.

The respective terminal portions28band the intermediate portions28cof the lead frames28A to28C are located on the outer side of the second edge34of the substrate30, in the second direction Y. A part of the intermediate portions28c, and the terminal portions28bare aligned along the first direction X. The respective intermediate portions28cof the lead frames28A,28B are formed generally in an L-shape, in a plan view. The bonding portions28aof the lead frames28A to28C are aligned along the second direction Y. The bonding portions28aof the lead frames28A to28C each have a rectangular shape. The bonding portions28aof the lead frames28A to28C each extend along the first direction X, with the longitudinal direction aligned with the first direction X. The bonding portions28aof the lead frames28D to28H are aligned along the first direction X. The bonding portions28aof the lead frames28D to28H each have a rectangular shape. The bonding portions28aof the lead frames28D to28H each extend along the second direction Y, with the longitudinal direction aligned with the second direction Y.

As indicated by the auxiliary line drawn in the second direction Y from the island portion21aof the lead frame20A, the bonding portions28aof the lead frames28A to28C overlap with the lead frame28D, as viewed in the second direction Y. In addition, as indicated by the auxiliary line, the bonding portions28aof the lead frames28A to28C overlap with the end portion of the island portion21aof the lead frame20A on the side of the second edge34of the substrate30, as viewed in the second direction Y. The lead frames28E to28H are located within the island portion21aof the lead frame20A, in the first direction X. More specifically, the lead frame28E is located on the side of the first edge33, with respect to the end portion of the island portion21aon the side of the second edge34, as viewed in the second direction Y. The lead frame28H is located on the side of the second edge34, with respect to the end portion of the island portion21aon the side of the first edge33, as viewed in the second direction Y.

The lead frame28I to28R include, as examples of the terminal of the semiconductor package1, the HINU terminal, the HINV terminal, the HINW terminal, the LINU terminal, the LINV terminal, the LINW terminal, the FO terminal, the VOT terminal, the third VCC terminal, and the third GND terminal. InFIG. 79, the lead frame28I constitutes the HINU terminal. The lead frame28I constitutes the HINV terminal. The lead frame28K constitutes the HINW terminal. The lead frame28I, constitutes the LINU terminal. The lead frame28M constitutes the LINV terminal. The lead frame28N constitutes the LINW terminal. The lead frame28O constitutes the FO terminal. The lead frame28P constitutes the VOT terminal. The lead frame28Q constitutes the third VCC terminal. The lead frame28R constitutes the third GND terminal. The third VCC terminal supplies a source voltage VCC to the primary-side circuit160. The VOT terminal detects the temperature of the semiconductor chips41X to46X. Here, the correspondence between the lead frames28I to28R and the mentioned terminals is not limited toFIG. 79, but may be modified as desired.

As indicated by the auxiliary line drawn in the second direction Y from the island portion22aof the lead frame20B, and the auxiliary line drawn in the second direction Y from the island portion22aof the lead frame20D, the lead frames28I to28R are located so as to overlap with one of the island portions22aof the lead frames20B to20D, as viewed in the second direction Y. The lead frame28I is located on the side of the first edge33in the first direction X, with respect to the end portion of the island portion22aof the lead frame20B, on the side of the second edge34in the first direction X.

The lead frames28I to28L are located so as to overlap with the island portion22aof the lead frame20B, as viewed in the second direction Y. The lead frame28I is located so as to overlap with the semiconductor chip44X, as viewed in the second direction Y. The lead frame28J is located so as to overlap with the semiconductor chip44X, as viewed in the second direction Y. The lead frames28K and28L are located on the side of the first edge33with respect to the semiconductor chip44X, as viewed in the second direction Y.

The lead frames28L to28P are located so as to overlap with the island portion22aof the lead frame20C, as viewed in the second direction Y. The lead frame28L is located so as to overlap with both of the island portion22aof the lead frame20B and the island portion22aof the lead frame20C, as viewed in the second direction Y. The lead frames28M to28O are located so as to overlap with the semiconductor chip45X, as viewed in the second direction Y. The lead frame28P is located on the side of the first edge33with respect to the semiconductor chip45X, as viewed in the second direction Y.

The lead frames28Q and28R are located so as to overlap with the island portion22aof the lead frame20D, as viewed in the second direction Y. The lead frame28Q is located on the side of the second edge34with respect to the semiconductor chip46X, as viewed in the second direction Y. The lead frame28R is located on the side of the second edge34in the first direction X, with respect to the end portion of the island portion22aof the lead frame20D, on the side of the first edge33in the first direction X. The lead frame28R is located so as to overlap with the semiconductor chip46X, as viewed in the second direction Y.

The bonding portions28aof the lead frames28I to28R are aligned along the first direction X with a clearance between each other, along the end portion of the first region30B on the side of the first edge33of the substrate30. A clearance between the bonding portions28aof the lead frames28I to28R adjacent to each other in the first direction X is narrower than the clearance between the bonding portions28aof the lead frames28E and28F in the first direction X, and the clearance between the bonding portions28aof the lead frames28G and28H in the first direction X. As is apparent fromFIG. 79, the lead frames28I to28R are located within a region between the end portion of the lead frame20B on the side of the second edge34of the substrate30, and the end portion of the lead frame20D on the side of the first edge33of the substrate30, in the first direction X. In this embodiment, the lead frame28I overlaps with the end portion of the semiconductor chip44X on the side of the second edge34of the substrate30, as viewed in the second direction Y. The lead frame28R overlaps with the end portion of the semiconductor chip46X on the side of the second edge34of the substrate30, as viewed in the second direction Y. The bonding portions28aof the lead frames28I to28R each extend along the second direction Y, with the longitudinal direction aligned with the second direction Y.

The lead frames28S to28U include the CIN terminal (detection terminal CIN), the second VCC terminal, and the second GND terminal. InFIG. 79, the lead frame28S constitutes the CIN terminal (detection terminal CIN). The lead frame28T constitutes the second VCC terminal. The lead frame28U constitutes the second GND terminal. The lead frames28S to28U are each formed generally in an L-shape, in a plan view. The bonding portions28aof the lead frames28S to28U are aligned along the second direction Y with a clearance between each other, along the end portion of the substrate30on the side of the first edge33, and in a region on the side of the fourth edge36. The bonding portions28aof the lead frames28S to28U each have, for example, a rectangular shape in a plan view. In an example, the bonding portions28aof the lead frames28S to28U each extend along the first direction X, with the longitudinal direction aligned with the first direction X.

As indicated by the auxiliary line drawn in the second direction Y from the island portion22aof the lead frame20D, the bonding portions28aof the lead frames28S to28U overlap with the end portion of the lead frame20D on the side of the first edge33of the substrate30, as viewed in the second direction Y. In addition, the bonding portions28aof the lead frames28S to28U are located on the side of the first edge33of the substrate30, with respect to the semiconductor chip46X. Here, the respective end portions of these bonding portions28amay overlap with the semiconductor chip46X, as viewed in the second direction Y.

As shown inFIG. 79, a wiring pattern200, for electrically connecting the control chips47and48, the diodes49U to49W, the primary-side circuit chip160X, the transformer chip190X, and the lead frames28A to28U, is formed in the first region303of the substrate30. The wiring pattern200is, for example, formed of a conductive material MP. The wiring pattern200is formed by sintering the conductive material MP. Examples of the conductive material MP include silver (Ag), copper (Cu), and gold (Au). In this embodiment, silver is employed as the conductive material MP. In this embodiment, the control chips47and48exemplify a signal reception unit. The transformer chip190X exemplifies a first transmission circuit having a transformer structure including at least two coils opposed to each other with a gap therebetween, to transmit electrical signals.

As shown inFIG. 79andFIG. 80, the wiring pattern200includes an island portion201where the control chip47is mounted, an island portion202where the control chip48is mounted, and an island portion203where the primary-side circuit chip160X and the transformer chip190X are mounted. In the island portion201, the control chip47is mounted via the conductive material MP. In the island portion202, the control chip48is mounted via the conductive material MP. In the island portion203, the primary-side circuit chip160X and the transformer chip190X are mounted via the conductive material MP. In this embodiment, silver is employed as the conductive material MP. However, another material such as solder may be employed as the conductive material MP, instead of silver. The primary-side circuit chip160X is formed by sealing the primary-side circuit660shown inFIG. 49with an encapsulating resin. The transformer chip190X is formed by sealing the transformer690shown inFIG. 49, with the encapsulating resin. The primary-side circuit chip160X and the transformer chip190X each have a rectangular shape. In an example, the primary-side circuit chip160X and the transformer chip190X each have the long sides extending along the first direction X. In an example, the transformer chip190X is longer in the first direction X than the primary-side circuit chip160X, and also than the control chip48. In an example, the length of the transformer chip190X in the second direction Y is generally the same as that of the primary-side circuit chip160X, and shorter than that of the control chip48, Here, the length of the transformer chip190X in the second direction Y, expressed as “generally the same as that of the primary-side circuit chip160X”, may differ by within ±5% of the length of the transformer chip190X in the second direction Y.

The wiring pattern200includes twenty-one wirings205A to205U. The wirings205A to205U each include a first land portion206a, for connection to the lead frames28A to28U. The respective first land portions206aof the wirings205A to205C are formed between the island portion201and the second edge34of the substrate30, in the first direction X. The first land portions206aof the wirings205A to205C are aligned along the second direction Y, with a clearance between each other. The first land portions206aof the wirings205D to205R are each formed between the first land portion206aof the wiring205C and the fourth edge36of the substrate30, in the second direction Y. The first land portions206aof the wirings205D to205R are aligned along the first direction X, with a clearance between each other. A clearance between the first land portions206aadjacent to each other in the first direction X, among the first land portions206aof the wirings205D to205R, is a sixth clearance GR6, for example narrower than the fourth clearance GR4(seeFIG. 9). The first land portions206aof the wirings205S to205U are aligned along the second direction Y with a clearance between each other, along the end portion on the side of the first edge33of the substrate30. A clearance between the first land portions206aadjacent to each other in the second direction Y, among the first land portions206aof the wirings205S to205U (seventh clearance GR7) is, for example, equal to the sixth clearance GR6. In an example, the seventh clearance GR7and the sixth clearance GR6may differ from each other by within ±5%. The first land portions206aof the wirings205A to205C and205S to205U each have a rectangular shape, in a plan view. In an example, the first land portions206aof the wirings205A to205C and205S to205U each have the long sides extending along the first direction X. The first land portions206aof the wirings205D to205R each have a rectangular shape, in a plan view. In an example, the first land portions206aof the wirings205D to205R each have the long sides extending along the second direction Y. Here, the clearance between the first land portions206aadjacent to each other in the first direction X, among the first land portions206aof the wirings205D to205R, and the clearance between the first land portions206aadjacent to each other in the second direction Y, among the first land portions206aof the wirings205S to205U, may be modified as desired. For example, the seventh clearance GR7may be wider than the sixth clearance GR6. Further, the sixth clearance GR6may be equal to or wider than the fourth clearance GR4.

The wirings205B to205Q and205S,205T each include a second land portion206band a connection wiring206c. The connection wiring206cis connecting the first land portion206aand the second land portion206b. The wirings205A,205R, and205U each include a connection wiring206c, connected to the first land portion206a. In other words, the wirings205A,205R, and205U do not have the second land portion206b.

The lead frames28A to28U are each connected to the first land portion206aof the corresponding one of the wirings205A to205U, via the bonding material SD9(not shown).

Referring toFIG. 79toFIG. 82, the island portions201to203and the wirings205A to205U will be described in further detail. The island portion201is located adjacent to the lead frame20A, in the second direction Y. The island portion201is formed so as to overlap with the semiconductor chip42X, as viewed in the second direction Y. The island portion201is located on the side of the first edge33with respect to the semiconductor chip41X, as viewed in the second direction Y. The island portion201is located on the side of the second edge34with respect to the semiconductor chip43X, as viewed in the second direction Y. The island portion201is located between the lead frames28A to28C and the lead frame20A, in the second direction Y. The island portion201has, for example, a rectangular shape in a plan view. In an example, the island portion201has the long sides extending along the first direction X. The island portion201is larger in size in the first direction X, than the semiconductor chips41X to43X and the diodes41Y to43Y. The island portion201is smaller in size in the first direction X, than the island portion21aof the lead frame20A. Further, as indicated by the auxiliary line drawn in the second direction Y from the island portion201, the end portion of the island portion201on the side of the second edge34overlaps with the lead frame28F, as viewed in the second direction Y. In other words, the island portion201is formed on the side of the first edge33in the first direction X, with respect to the lead frame28E. In addition, the island portion201is formed on the side of the first edge33, with respect to the first land portion206aof the wiring205D. As indicated by the auxiliary line drawn in the second direction Y from the island portion201, the end portion of the island portion201on the side of the first edge33of the substrate30overlaps with the first land portion206aof the wiring205H, as viewed in the second direction Y. Therefore, the lead frame28G may be described as overlapping with the island portion201, as viewed in the second direction Y.

To the island portion201, the wiring205A is connected. The wiring205A constitutes a first ground pattern connected to the island portion201, where the control chip47is mounted. The wiring205A is connected to the end portion of the island portion201on the side of the second edge34in the first direction X, and on the side of the lead frame20A in the second direction Y. The wiring205A is formed generally in an L-shape in a plan view, to be connected to the bonding portion28aof the lead frame28A. The wiring205A includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the first direction X from the island portion201toward the second edge34of the substrate30. The second portion extends along the second direction Y, from the end portion of the first portion on the side of the second edge34in the first direction X, toward the fourth edge36. The wiring205A is larger than the other wirings, in a plan view.

The control chip47is located at the central position of the island portion201, in the first direction X. The control chip47is located in a region of the island portion201on the side of the lead frame20A, in the second direction Y. The control chip47is located so as to overlap with the semiconductor chip42X, as viewed in the second direction Y. The control chip47is located on the side of the first edge33in the first direction X, with respect to the semiconductor chip41X. Further, the control chip47is located on the side of the second edge34in the first direction X, with respect to the semiconductor chip43X.

The island portion202is formed at a position adjacent to the island portion22aof the lead frame20C, in the second direction Y. The island portion202is located so as to overlap with the island portion201, as viewed in the first direction X. The island portion202is located on the side of the first edge33in the first direction X, with respect to the island portion22aof the lead frame20C. The island portion202is located on the side of the second edge34, with respect to the island portion22aof the lead frame20D. In this embodiment, the island portion202is formed such that the center thereof in the first direction X coincides with the center of the semiconductor chip45X in the first direction X and the center of the diode45Y in the first direction X. Here, the position of the island portion202in the first direction X, with respect to the island portions22aof the lead frames20B to20D, may be modified as desired. For example, the island portion202may be formed so as to overlap with the island portion22aof the lead frame20C, or the island portion22aof the lead frame20D, as viewed in the second direction Y.

As indicated by the auxiliary line drawn in the second direction Y from the island portion202, the island portion202is formed on the side of the first edge33of the substrate30, with respect to the lead frames28I to28K. In addition, as indicated by the auxiliary line drawn in the second direction Y from the island portion202, the island portion202is formed on the side of the second edge34, with respect to the lead frames28Q and28R. The island portion202overlaps with the lead frames28I, to28P, as viewed in the second direction Y. Here, the position of the island portion202in the first direction X, with respect to the lead frames28I to28R, may be modified as desired.

The island portion202has, for example, a rectangular shape in a plan view. In an example, the island portion202has the long sides extending along the first direction X. The island portion202is slightly larger in size in the first direction X, than the island portion22aof the lead frame20C. The island portion202is generally the same in size in the second direction Y, as the island portion201. In the second direction Y, the edge of the island portion202on the side of the third edge35accords with the edge of the island portion201on the side of the third edge35. Here, the size of the island portion202in the second direction Y and the size of the island portion201in the second direction Y may differ by within ±5% of the size of the island portion202in the second direction Y.

To the island portion202, the wiring205U is connected. The wiring205U is connected to the end portion of the island portion202on the side of the first edge33, in the first direction X. The wiring205U is also connected to the end portion of the island portion202on the side of the lead frame20D, in the second direction Y. The wiring205U constitutes a second ground pattern connected to the island portion202where the control chip48is mounted. The wiring205U is connected to the bonding portion28aof the lead frame28U. The wiring205U is, for example, generally L-shaped in a plan view. The wiring205U includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the first direction X, from the island portion202toward the first edge33. The second portion extends in the second direction Y, from the end portion of the first portion on the side of the first edge33toward the fourth edge36. In a plan view, the wiring205U is thicker than other wirings, but finer than the wiring205A.

The control chip48is located at the central position of the island portion202, in the first direction X. The control chip48is located in a region of the island portion202on the side of the lead frame20C, in the second direction Y. The control chip48is located so as to overlap with the semiconductor chip45X, as viewed in the second direction Y. The control chip48is located on the side of the first edge33with respect to the semiconductor chip44X, as viewed in the second direction Y. Further, the control chip48is located on the side of the second edge34with respect to the semiconductor chip46X, as viewed in the second direction Y.

A connection wiring204is formed between the island portion201and the island portion202in the first direction X, to connect these island portions. The connection wiring204extends along the first direction X. A first end portion of the connection wiring204is connected to the island portion201. More specifically, the first end portion of the connection wiring204is connected to the end portion of the island portion201on the side of the first edge33, in the first direction X. The first end portion of the connection wiring204is connected to the end portion of the island portion201on the side of the lead frame20A, in the second direction Y. A second end portion of the connection wiring204is connected to the island portion202. More specifically, the second end portion of the connection wiring204is connected to the end portion of the island portion202on the side of the second edge34, in the first direction X. The second end portion of the connection wiring204is connected to the end portion of the island portion202on the side of the lead frame20C, in the second direction Y. In a plan view, the connection wiring204has the same thickness as the wiring205U. However, the thickness of the connection wiring204may be modified as desired. In an example, the connection wiring204may be different in thickness, from the wiring205O.

The lead frame28A and the lead frame28U are electrically connected, via the wiring205A, the island portion201, the connection wiring204, the island portion202, and the wiring205U. Accordingly, the lead frame28A and the lead frame28U are connected to each other, via the wiring pattern200on the substrate30. In addition, the wiring pattern200includes a ground pattern, on which the control chip47and the control chip48are mounted.

Between the island portion201and the island portion202in the first direction X, three intermediary wirings207A to207C, each exemplifying the first intermediary wiring, are provided. The intermediary wirings207A to207C serve to transmit control signals of the semiconductor chips41X to43X, from the control chip47to the control chip48. The intermediary wirings207A to207C are aligned in the order of intermediary wiring207A, intermediary wiring207B, and intermediary wiring207C, from the side of the fourth edge36of the substrate30, toward the third edge35. The intermediary wirings207A to207C are formed in a region between the fourth edge36of the substrate30and the connection wiring204, in the second direction Y. The intermediary wirings207A to207C are formed so as to overlap with the island portion201, as viewed in the first direction X. The intermediary wirings207A to207C may be formed so as to overlap with the island portion202, as viewed in the first direction X. The intermediary wiring207C is formed adjacent to the connection wiring204, in the second direction Y.

In this embodiment, the respective shapes of the intermediary wirings207A to207C are equal to each other. The intermediary wirings207A to207C each include a first land portion207a, a second land portion207b, and a connection wiring207c. The connection wiring207cis connecting the first land portion207aand the second land portion207b. The respective first land portions207aof the intermediary wirings207A to207C are formed on the side of the island portion202, in the first direction X. The respective second land portions207bof the intermediary wirings207A to207C are formed on the side of the island portion201. The respective connection wirings207cof the intermediary wirings207A to207C extend along the first direction X.

In the first direction X, a distance between the island portion202and the first land portion207a, and a distance between the island portion201and the second land portion207bare equal to each other. These distances are longer than a distance between the island portion201and other land portions, and longer than a distance between the island portion202and other land portions or the island portion203. However, the distance between the island portion202and the first land portion207a, and the distance between the island portion201and the second land portion207bmay each be modified as desired. In an example, the distance between the island portion202and the first land portion207a, and the distance between the island portion201and the second land portion207bmay be different from each other.

The wirings205B and205C are formed on the substrate30, between the island portion201and the second edge34in the first direction X. The wirings205B and205C are located on the side of the first edge33, and on the side of the fourth edge36, with respect to the wiring205A. The wirings205D to205H are formed on the substrate30, between the island portion201and the fourth edge36, in the second direction Y. The wirings205D to205H are located on the side of the first edge33, and on the side of the fourth edge36, with respect to the wiring205C.

The wiring205B constitutes a first power source pattern that supplies the source voltage VCC from the lead frame28B, constituting the first VCC terminal, to the control chip47. The wirings205C and205D are wiring patterns that constitute the boot strap circuit including the diode49U. The wirings205E and205F are wiring patterns that constitute the boot strap circuit including the diode49V. The wirings205G and205H are wiring patterns that constitute the boot strap circuit including the diode49W.

The respective second land portions206bof the wirings205D to205H are formed with a spacing from the edge of the island portion201on the side of the fourth edge36, in the second direction Y. The second land portions206bof the wirings205D to205H are aligned with a clearance between each other along the second direction Y, in the order of wiring205D, wiring205E, wiring205F, wiring205G, and wiring205H, from the side of the second edge34toward the first edge33of the substrate30. The second land portions206bof the wirings205D,205F, and205H have, for example, a rectangular shape in a plan view. In an example, the second land portions206bof the wirings205D,205F, and205H each have the long sides extending along the first direction X. The second land portions206bof the wirings205E and205G have, for example, a rectangular shape in a plan view. In an example, the second land portions206bof the wirings205E and205G each have the long sides extending along the second direction Y. The clearance between the second land portion206bof the wiring205E and the respective second land portions206bof the wirings205D and205F in the first direction X, and the clearance between the second land portion206bof the wiring205G and the respective second land portions206bof the wirings205F and205H in the first direction X, are equal to each other. These clearances are narrower than the clearance between the land portions206bof the wirings205D to205H and the island portion201, in the second direction Y. Here, the expression “clearance between the second land portion206bof the wiring205E and the respective second land portions206bof the wirings205D and205F in the first direction X, and the clearance between the second land portion206bof the wiring205G and the respective second land portions206bof the wirings205F and205H in the first direction X, are equal to each other” includes a difference within ±5% of the clearance.

The second land portion206bof the wiring205D is formed so as to overlap with the end portion of the island portion201on the side of the second edge34, as viewed in the second direction Y. The second land portion206bof the wiring205D protrudes toward the second edge34of the substrate30in the first direction X, with respect to the island portion201. The second land portion206bof the wiring205D is formed on the side of the first edge33, and on the side of the third edge35, with respect to the bonding portion28aof the lead frame28D.

The connection wiring206cis connected to the end portion of the second land portion206bof the wiring205D, on the side of the second edge34and on the side of the fourth edge36. This connection wiring206cis formed so as to be connected to the bonding portion28aof the lead frame28D. The connection wiring206cof the wiring205D includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion206aof the wiring205D toward the first edge33. The second portion extends along the second direction Y, from the second land portion206bof the wiring205D toward the fourth edge36. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the second edge34, toward the fourth edge36of the substrate30.

The diode49U is smaller in size than the second land portion206bof the wiring205D. The diode49U is mounted on the second land portion206bof the wiring205D, via the conductive material MP. The diode49U is located at the end portion of the second land portion206bof the wiring205D, on the side of the second edge34. Here, the position of the diode49U with respect to the second land portion206bof the wiring205D may be modified as desired.

The second land portion206bof the wiring205F is formed so as to overlap with the center of the island portion201in the first direction X, as viewed in the second direction Y. The wiring205F is formed on the side of the first edge33, and on the side of the third edge35, with respect to the bonding portion28aof the lead frame28F.

The connection wiring206cof the wiring205F is connected to the end portion of the second land portion206bof the wiring205F on the side of the second edge34, and on the side of the fourth edge36. This connection wiring206cis formed so as to be connected to the bonding portion28aof the lead frame28F. The connection wiring206cof the wiring205F includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the first edge33. The second portion extends along the second direction Y, from the second land portion206bof the wiring205F toward the fourth edge36. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the second edge34, toward the fourth edge36of the substrate30. The third portion of the wiring205F is shorter than the third portion of the wiring205D.

The diode49V is smaller in size than the second land portion206bof the wiring205F. The diode49V is mounted on the second land portion206b, via the conductive material MP. The diode49V is located at the end portion of the second land portion206bof the wiring205F, on the side of the second edge34of the substrate30. Here, the position of the diode49V with respect to the second land portion206bof the wiring205F may be modified as desired.

The second land portion206bof the wiring205H is formed so as to overlap with the end portion of the island portion201on the side of the first edge33, as viewed in the second direction Y. The second land portion206bof the wiring205H protrudes toward the first edge33in the first direction X, with respect to the island portion201. The second land portion206bof the wiring205H is formed so as to overlap with the bonding portion28aof the lead frame28H, as viewed in the second direction Y. The second land portion206bof the wiring205H is formed so as to overlap with the second land portion206bof the wiring205D, and the second land portion206bof the wiring205F, as viewed in the first direction X.

The connection wiring206cis connected to a portion of the second land portion206bof the wiring205H on the side of the second edge34of the substrate30, and the end portion on the side of the fourth edge36. This connection wiring206cextends along the second direction Y, so as to connect the first land portion207a, connected to the bonding portion28aof the lead frame28H, and the second land portion206bof the wiring205H.

The diode49W is smaller in size than the second land portion206bof the wiring205H. The diode49W is mounted on this second land portion206b, via the conductive material MP. The diode49W is located at the end portion of the second land portion206bof the wiring205H, on the side of the second edge34of the substrate30. Here, the position of the diode49W with respect to the second land portion206bof the wiring205H may be modified as desired. Here, the conductive material MP used to mount the diodes49U to49W may be formed, for example, silver (Ag), copper (Cu), or gold (Au). In this embodiment, silver is employed to form the conductive material MP for mounting the diodes49U to49W.

The wiring205E is formed between the wirings205D and205F, in the first direction X. The first land portion206aof the wiring205E is formed on the side of the second edge34in the first direction X, and on the side of the fourth edge36in the second direction Y, with respect to the second land portion206bof the wiring205E. The connection wiring206cof the wiring205E includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the third edge35. The second portion extends along the second direction Y, from the second land portion206bof the wiring205E toward the fourth edge36. The third portion is connecting the first portion and the second portion. The third portion extends obliquely so as to be closer to the second edge34, toward the fourth edge36of the substrate30. The second portion of the wiring205E is shorter than the second portion of the wiring205D.

The wiring205G is formed between the wirings205F and205H, in the first direction X. A part of the first land portion206aof the wiring205G is formed on the side of the second edge34, with respect to the second land portion206b. The connection wiring206cof the wiring205G extends along the second direction Y.

In the region around the island portion201, the respective second land portions206bof the wirings2053and205C are formed with a clearance therebetween in the second direction Y, on the side of the fourth edge36with respect to the wiring205A and the connection wiring204. The mentioned clearance is narrower than the clearance between the second land portions206bof the wirings205D to205H and the island portion201, in the second direction Y. The second land portions206bof the wirings205B and205C have, for example, a rectangular shape in a plan view. The second land portions206bof the wirings205B and205C each have the long sides extending along the first direction X. The second land portion206bof the wiring205B is longer than the second land portion206bof the wiring205C, in the first direction X. The second land portion206bof the wiring205B has the same length as the second land portion206bof the wiring205C, in the second direction Y. Here, the length of the second land portion206bof the wiring205B in the second direction Y, expressed as “same as the second land portion206bof the wiring205C in the second direction Y”, may differ by within ±5% of the length of the second land portion206bof the wiring2058in the second direction Y.

The wiring205B is formed between the wirings205A and,205C. The first land portion206aof the wiring2058is formed on the side of the second edge34in the first direction X, and on the side of the fourth edge36in the second direction Y, with respect to the second land portion206bof the wiring205B. The connection wiring206cof the wiring205B includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion206atoward the second edge34. The second portion extends along the second direction Y, from the end portion of the second land portion206bon the side of the second edge34, toward the fourth edge36. The second portion is connected to the first portion.

The wiring205C is formed between the wirings205B and,205D. The first land portion206aof the wiring205C is formed on the side of the second edge34in the first direction X, and on the side of the fourth edge36in the second direction Y, with respect to the second land portion206bof the wiring205C. The connection wiring206cof the wiring205C is located closer to the connection wiring206cof the wiring205B, than to the connection wiring206cof the wiring205D. The connection wiring206cof the wiring205C includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion206aof the wiring205C toward the first edge33. The second portion extends along the second direction Y, from the end portion of the second land portion207bof the wiring205C on the side of the second edge34, toward the fourth edge36. The third portion is connecting the first portion and the second portion. The third portion extends obliquely so as to be closer to the second edge34, toward the fourth edge36of the substrate30. The third portion of the wiring205C is shorter than the third portion of the wiring2053.

As shown inFIG. 81, the control chip47is electrically connected to the semiconductor chips41X to43X (seeFIG. 79), the diodes49U to49W, the wirings205A to205H, and the intermediary wirings207A to207C, via wires208A to208Q exemplifying the first connection material. The wires208A to208Q are connected to a face of the control chip47opposite to the face via which the control chip47is mounted on the island portion201, in a third direction Z (perpendicular to both of the first direction X and the second direction Y). The wires208A to208Q are, for example, formed of gold (Au). The wires208A to208Q have the same wire diameter as each other. The wires208A to208Q are finer in wire diameter than the wires24A to24F. Here, the wire diameters of the wires208A to208Q may differ by within ±5% between each other.

The second electrodes GP of the semiconductor chips41X to43X are connected to the control chip47, via the wires208A to208C, respectively. The first electrodes SP of the semiconductor chips41X to43X are connected to the control chip47, via another line of the wires208A to208C. A first end portion of one wire208A is connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y. The first end portion of the one wire208A is connected to the end portion of the control chip47on the side of the second edge34in the first direction X. A second end portion of the one wire208A is connected to second electrode GP of the semiconductor chip41X. A first end portion of another wire208A is connected to a position on the control chip47adjacent, on the side of the first edge33in the first direction X, to the first end portion of the wire208A connected to the second electrode GP. The first end portion of the other wire208A is connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y. A second end portion of the other wire208A is connected to a position on the first electrode SP of the semiconductor chip41X adjacent to the second electrode GP on the side of the first edge33. A first end portion of one wire208B is connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y. The first end portion of the one wire208B is connected to the center of the control chip47in the first direction X. A second end portion of the one wire208B is connected to the second electrode GP of the semiconductor chip42X. A first end portion of another wire208B is connected to a position on the control chip47adjacent, on the side of the first edge33of the substrate30in the first direction X, to the first end portion of the one wire208B. A second end portion of the other wire208B is connected to a position adjacent to the second electrode GP, on the first electrode SP of the semiconductor chip42X. A first end portion of one wire208C is connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y. The first end portion of the one wire208C is connected to the end portion of the control chip47on the side of the first edge33, in the first direction X. A second end portion of the one wire208C is connected to the second electrode GP of the semiconductor chip43X. A first end portion of another wire208C is connected to a position on the control chip47adjacent, on the side of the second edge34of the substrate30in the first direction X, to the first end portion of the wire208C connected to the second electrode GP. The first end portion of the other wire208C is connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y. A second end portion of the other wire208C is connected to a position on the first electrode SP of the semiconductor chip43X, adjacent to the second electrode GP on the side of the second edge34of the substrate30.

The diodes49U to49W have the first electrode (e.g., anode) connected to the control chip47, via the wires208D to208F respectively. The second electrode (e.g., cathode) of the diode49U is electrically connected to the lead frame28D, via the wiring205D. The second electrode (e.g., cathode) of the diode49V is electrically connected to the lead frame28F, via the wiring205F. The second electrode (e.g., cathode) of the diode49W is electrically connected to the lead frame28H, via the wiring205H. The wire208D is connected to the end portion of the control chip47on the side of the fourth edge36, in the second direction Y. The wire208D is connected to the end portion of the control chip47on the side of the second edge34, in the first direction X. The wire208B is connected to the end portion of the control chip47on the side of the fourth edge36, in the second direction Y. The wire208E is connected to the center of the control chip47in the first direction X. The wire208F is connected to the end portion of the control chip47on the side of the fourth edge36, in the second direction Y. The wire208F is connected to a position on the control chip47on the side of the first edge33in the first direction X, with respect to the center of the control chip47in the first direction X.

The control chip47is electrically connected to the second land portion206bof the wiring205D, via two wires208G. The control chip47is also electrically connected to the second land portion206bof the wiring205F, via two wires208H. Further, control chip47is electrically connected to the second land portion206bof the wiring205H, via two wires208I. The two wires208G are connected to positions on the second land portion206bof the wiring205D on the side of the third edge35in the second direction Y, with respect to the diode49U. The two wires208G are connected to the positions on the second land portion206bof the wiring205D on the side of the first edge33in the first direction X, with respect to the diode49U. The two wires208H are connected to positions on the second land portion206bof the wiring205F on the side of the first edge33in the first direction X, with respect to the diode49V. The two wires208H are connected to the positions on the second land portion206bof the wiring205F on the side of the third edge35in the second direction Y, with respect to the center of the second land portion206bin the second direction Y. The two wires208I are connected to positions on the second land portion206bof the wiring205H on the side of the second edge34in the first direction X, with respect to the diode49W. The two wires208I are connected to the positions on the second land portion206bof the wiring205H on the side of the third edge35in the second direction Y, with respect to the center of the second land portion206bin the second direction Y.

Respective first end portions of two wires208J, connecting the wiring205B and the control chip47, are connected to the end portion of the control chip47on the side of the second edge34of the substrate30, in the first direction X. The respective first end portions of the two wires208J are connected to central positions of the control chip47in the second direction Y. Respective second end portions of the two wires208J are connected to the end portion of the second land portion206bof the wiring205B on the side of the island portion201in the first direction X.

A first end portion of a single-line wire208K, connecting the wiring205C and the control chip47, is connected to the end portion of the control chip47on the side of the second edge34of the substrate30, in the first direction X. The first end portion of the single-line wire208K is connected to the end portion of the control chip47on the side of the fourth edge36, in the second direction Y. A second end portion of the single-line wire208K is connected to the end portion of the second land portion206bof the wiring205C on the side of the island portion201, in the first direction X. A first end portion of a single-line wire208L, connecting the wiring205E and the control chip47, is connected to the end portion of the control chip47on the side of the fourth edge36of the substrate30, in the second direction Y. The first end portion of a single-line wire208L is connected to a position on the control chip47between the first end portion of the wire208E and the first end portion of the wire208G in the first direction X. A second end portion of the wire208L is connected to a position on the second land portion206bof the wiring205E, on the side of the island portion201in the second direction Y, with respect to the center of the second land portion206bin the second direction Y. Respective first end portions of two wires208M, connecting the wiring205G and the control chip47, are connected to the end portion of the control chip47on the side of the fourth edge36of the substrate30, in the second direction Y. The respective first end portions of the two wires208M are connected to positions on the control chip47between the first end portion of the wire208F and the first end portion of the wire208H in the first direction X. Respective second end portions of the two wires208M are connected to the end portion of the second land portion206bof the wiring205G on the side of the island portion201in the first direction X, with respect to the center of the second land portion206bin the second direction Y. The control chip47is electrically connected to the connection wiring204, via two wires208N. Respective first end portions of the two wires208N are connected to the end portion of the control chip47on the side of the first edge33, in the first direction X. The respective first end portions of the two wires208N are connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y. Respective second end portions of the two wires208N are connected to the end portion of the connection wiring204on the side of the island portion201in the first direction X.

A first end portion of a single-line wire208O, connecting the intermediary wiring207A and the control chip47, is connected to the end portion of the control chip47on the side of the first edge33in the first direction X. The first end portion of the single-line wire208O is connected to a position on the side of the fourth edge36in the second direction Y, with respect to the center of the control chip47in the second direction Y. A second end portion of the wire208O is connected to the second land portion207bof the intermediary wiring207A. A first end portion of a single-line wire208P, connecting the intermediary wiring207B and the control chip47, is connected to the end portion of the control chip47on the side of the first edge33in the first direction X. The first end portion of the single-line wire208P is connected to the center of the control chip47in the second direction Y. A second end portion of the wire208P is connected to the second land portion207bof the intermediary wiring207B. A first end portion of a single-line wire208Q, connecting the intermediary wiring207C and the control chip47, is connected to the end portion of the control chip47on the side of the first edge33of the substrate30in the first direction X. The first end portion of the wire208Q is connected to a position on the side of the third edge35in the second direction Y, with respect to the center of the control chip47in the second direction Y. A second end portion of the wire208Q is connected to the second land portion207bof the intermediary wiring207C.

The respective second land portions206bof the wirings205S and205T, and the island portion203are formed around the island portion202. The wirings205S and205T are formed between the first edge33of the substrate30and the island portion202, in the first direction X. The wiring205S constitutes a signal pattern electrically connected to the control chip48. The wiring205S constitutes the signal pattern that supplies the detection voltage CIN to the control chip48. The wiring205T constitutes a second power source pattern that supplies the source voltage VCC to the control chip48.

The respective land portions206bof the wirings205S and205T are formed on the side of the first edge33with respect to the island portion202, with a clearance therefrom. The island portion203is formed on the side of the fourth edge36with respect to the island portion202, with a clearance therefrom. The second land portions206bof the wirings205S and205T are, for example, formed in a quadrate (square) shape in a plan view. Here, the shape of the second land portions206bof the wirings205S and205T may be modified as desired.

The respective land portions206bof the wirings205S and205T are aligned in the second direction Y, with a clearance therebetween. The clearance between the second land portion206bof the wiring205S and the second land portion206bof the wiring205T in the second direction Y is narrower than the clearance between the second land portion206bof the wiring205T and the connection wiring206cof the wiring205U in the second direction Y. The first land portion206aof the wiring205T is formed on the side of the first edge33, and on the side of the fourth edge36of the substrate30, with respect to the second land portion206bof the wiring205T. The connection wiring206cof the wiring205S includes a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion206atoward the second edge34, The second portion extends along the first direction X, from the second land portion206btoward the first edge33. The third portion extends along the second direction Y. The third portion is located between the first portion and the second portion, in the first direction X. The fourth portion is connecting the first portion and the third portion. The fifth portion is connecting the second portion and the third portion. The fourth portion is connected to the end portion of the third portion on the side of the fourth edge36. The fifth portion is connected to the end portion of the third portion on the side of the third edge35. The fourth portion and the fifth portion each extend obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30.

The second land portion206bof the wiring205S is opposed to the end portion of the island portion201on the side of the fourth edge36, in the first direction X. The first land portion206aof the wiring205S is formed on the side of the first edge33, and on the side of the fourth edge36of the substrate30, with respect to the second land portion206bof the wiring205S. The connection wiring206cof the wiring205S includes a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion206atoward the second edge34. The second portion extends along the first direction X, from the second land portion206btoward the first edge33. The third portion extends along the second direction Y. The third portion is located between the first portion and the second portion, in the first direction X. The fourth portion is connecting the first portion and an end portion of the third portion. The fifth portion is connecting the second portion and the other end portion of the third portion. The fourth portion is connected to the end portion of the third portion on the side of the fourth edge36. The fifth portion is connected to the end portion of the third portion on the side of the third edge35. The fourth portion and the fifth portion each extend obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30.

The island portion203is formed adjacent to the island portion202with a clearance therefrom, on the side of the fourth edge36of the substrate30. The island portion203has, for example, a generally rectangular shape in a plan view. In an example, the island portion203has the long sides extending along the first direction X. The island portion203is larger in size in the first direction X, than the island portion202. The island portion203is larger in size in the second direction Y, than the island portion202. The island portion203includes a first cutaway portion203aand a second cutaway portion203b. The first cutaway portion203ais formed in the end portion of the island portion203on the side of the second edge34, in the first direction X. The first cutaway portion203ais formed along the portion of the island portion203between the center thereof in the second direction Y, and the end portion thereof on the side of the fourth edge36. The second cutaway portion203bis formed in a portion of the island portion203on the side of the first edge33in the first direction X, with respect to the center of the island portion203in the first direction X. The second cutaway portion203bis formed in the end portion of the island portion203on the side of the fourth edge36, in the second direction Y. The first cutaway portion203aextends along the second direction Y. The second cutaway portion203bextends along the first direction X. A portion of the island portion203on the side of the third edge35protrudes toward the second edge34in the first direction X, with respect to the island portion202. The island portion203extends further toward the first edge33, with respect to the second land portions206bof the wirings205S and205T. The end portion of the island portion203on the side of the first edge33overlaps with the semiconductor chip46X, as viewed in the second direction Y (seeFIG. 79). The island portion203is formed on the side of the first edge33, with respect to the lead frames28I to28K. In other words, the island portion203is formed on the side of the first edge33, with respect to the first land portions206aof the wirings205I to205K.

On the island portion203, the primary-side circuit chip160X and the transformer chip190X are mounted, via the conductive material MP. The primary-side circuit chip160X and the transformer chip190X are opposed to each other in the second direction Y, with a clearance therebetween. The primary-side circuit chip160X is located in a region of the island portion203on the side of the fourth edge36, with respect to the transformer chip190X. In an example, the primary-side circuit chip160X is located in a region of the island portion203on the side of the fourth edge36in the second direction Y, with respect to the center of the island portion203in the second direction Y. In an example, the transformer chip190X is located in a region of the island portion203on the side of the third edge35in the second direction Y, with respect to the center of the island portion203in the second direction Y. The transformer chip190X is opposed to the control chip48in the second direction Y, with a clearance therebetween. In the second direction Y, the distance between the transformer chip190X and the control chip48is longer than the distance between the transformer chip190X and the primary-side circuit chip160X. The primary-side circuit chip160X, the transformer chip190X, and the control chip48overlap with each other, as viewed in the second direction Y.

As shown inFIG. 82, the primary-side circuit chip160X and the transformer chip190X are connected to each other, via a plurality of wires211exemplifying the third connection material. The plurality of wires211are connected to the respective faces of the primary-side circuit chip160X and the transformer chip190X, opposite to the face via which these chips are mounted on the island portion203, in the third direction Z. Respective first end portions of the plurality of wires211are connected to the end portion of the primary-side circuit chip160X on the side of the third edge35, in the second direction Y. Respective second end portions of the plurality of wires211are connected to the end portion of the transformer chip190X on the side of the fourth edge36, in the second direction Y. In this embodiment, eight pieces of land units are aligned in the first direction X with a clearance between each other, each land unit including three land portions of the primary-side circuit chip160X, to which three wires211are respectively connected. In addition, eight pieces of land units are aligned in the first direction X with a clearance between each other, each land unit including three land portions of the transformer chip190X, to which three wires211are respectively connected. As shown inFIG. 82, the array pitch among the eight land units (distance between land units adjacent to each other in the first direction X) of the transformer chip190X is wider than the array pitch among the eight land units of the primary-side circuit chip160X.

The transformer chip190X and the control chip48are connected to each other, via a plurality of wires212exemplifying the fourth connection material. Respective first end portions of the plurality of wires212are connected to the end portion of the transformer chip190X on the side of the third edge35, in the second direction Y. Respective second end portions of the plurality of wires212are connected to the end portion of the control chip48on the side of the fourth edge36, in the second direction Y. In this embodiment, eight pieces of land units are aligned in the first direction X with a clearance between each other, each land unit including three land portions of the transformer chip190X, to which three wires212are respectively connected. The array pitch among the eight land units of the transformer chip190X is equal to the array pitch among the eight land units on the transformer chip190X, to which the wires211are connected. In addition, eight pieces of land units are aligned in the first direction X with a clearance between each other, each land unit including three land portions of the control chip48, to which three wires212are respectively connected. As shown inFIG. 82, the array pitch among the eight land units of the transformer chip190X is wider than the array pitch among the eight land units of the control chip48. In an example, further, the array pitch among the eight land units of the control chip48and the array pitch among the eight land units of the primary-side circuit chip160X are equal to each other. In addition, as is apparent fromFIG. 82andFIG. 83, the wires212are longer than the wires211. The wires211and212are, for example, formed of gold (Au). The wires211and212have the same wire diameter as each other. The wire diameter of the wires211and212is finer than that of the wires24A to24F and, for example, equal to that of the wires208A to208Q. Here, the respective wire diameters of the wires211and212, expressed as “the same as each other”, may differ by within ±5% from each other.

To the end portion of the island portion203on the side of the first edge33in the first direction X, and on the side of the fourth edge36in the second direction Y, the wiring205R is connected. The wiring205R constitutes a ground pattern connected to the island portion203, on which the primary-side circuit chip160X and the transformer chip190X are mounted. The first land portion206aof the wiring205R overlaps with the end portion of the island portion203on the side of the first edge33, as viewed in the second direction Y. The connection wiring206cof the wiring205R extends along the second direction Y.

The wirings205I to205Q are aligned in the order of wiring205I, wiring205J, wiring205K, wiring205L, wiring205M, wiring205N, wiring205O, wiring205P, and wiring205Q, from the side of the second edge34of the substrate30, toward the first edge33. The wiring205I constitutes a first signal pattern that transmits the control signal for the semiconductor chip41X to the primary-side circuit chip160X. The wiring205J constitutes the first signal pattern that transmits the control signal for the semiconductor chip42X to the primary-side circuit chip160X. The wiring205K constitutes the first signal pattern that transmits the control signal for the semiconductor chip43X to the primary-side circuit chip160X. The wiring205I, constitutes a second signal pattern that transmits the control signal for the semiconductor chip44X to the primary-side circuit chip160X. The wiring205M constitutes the second signal pattern that transmits the control signal for the semiconductor chip45X to the primary-side circuit chip160X. The wiring205N constitutes the second signal pattern that transmits the control signal for the semiconductor chip46X to the primary-side circuit chip160X. The wiring205O constitutes a signal pattern connected to the primary-side circuit chip160X. The wiring205O constitutes the signal pattern that transmits a fault detection signal FO to the primary-side circuit chip160X. The wiring205P constitutes a signal pattern connected to the primary-side circuit chip160X. The wiring205P constitutes the signal pattern that transmits a temperature detection signal VOT to the primary-side circuit chip160X. The wiring205Q constitutes the power source pattern that supplies the source voltage VCC to the primary-side circuit chip160X.

As shown inFIG. 80andFIG. 82, the respective second land portions206bof the wirings205I and205J are formed in the first cutaway portion203aof the island portion203. The second land portions206bof the wirings205I and205J are formed so as to overlap with each other, as viewed in the second direction Y. The second land portions206bof the wirings205I and205J are spaced apart from each other, in the second direction Y. The second land portions206bof the wirings205I and205J have, for example, a rectangular shape in a plan view. The second land portions206bof the wirings205I and205J each have the long sides extending along the second direction Y. The second land portion206bof the wiring205I is formed at a position corresponding to a portion of the primary-side circuit chip160X on the side of the third edge35in the second direction Y. The second land portion206bof the wiring205J is formed on the side of the fourth edge36in the second direction Y, with respect to the primary-side circuit chip160X. The second land portion206bof the wiring205J protrudes toward the fourth edge36, from the edge of the island portion203on the side of the fourth edge36.

The first land portion206aof the wiring205I is formed on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion206bof the wiring205I. This first land portion206aoverlaps with the end portion of the semiconductor chip44X on the side of the second edge34, as viewed in the second direction Y (seeFIG. 79). In other words, the first land portion206aof the wiring205I is formed on the side of the first edge33, with respect to the edge of the lead frame20B on the side of the second edge34. The connection wiring206cof the wiring205I is formed so as to secure a space for forming the respective connection wirings206cof the wirings205J and205K. The connection wiring206cof the wiring205I includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the third edge35. The second portion extends along the first direction X, from the second land portion206btoward the second edge34. The second portion is connected to the first portion.

The first land portion206aof the wiring205J is formed on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion206bof the wiring205J. This first land portion206aoverlaps with the end portion of the semiconductor chip44X on the side of the second edge34, as viewed in the second direction Y (seeFIG. 79). The connection wiring206cof the wiring205J is formed so as to secure a space for forming the connection wiring206cof the wiring205K. The connection wiring206cof the wiring205J includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the third edge35. The second portion extends along the first direction X, from the second land portion206btoward the second edge34. The second portion is connected to the first portion. The first portion of the wiring205J is longer than the first portion of the wiring205I. The second portion of the wiring205J is shorter than the second portion of the wiring205I.

The respective second land portions206bof the wirings205K to205P are formed in a region of the substrate30between the island portion203and the fourth edge36of the substrate30. The second land portions206bof the wirings205K to205P are aligned in the first direction X, with a clearance between each other. These second land portions206bhave, for example, a rectangular shape in a plan view. The second land portions206bof the wirings205K to205P each have the long sides extending along the first direction X.

The second land portion206bof the wiring205K is located so as to overlap with the end portion of the island portion203on the side of the second edge34, as viewed in the second direction Y. This second land portion206bis located so as to overlap with the end portion of the primary-side circuit chip160X on the side of the second edge34, as viewed in the second direction Y. The first land portion206aof the wiring205K is formed on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion206bof the wiring205K. The first land portion206aof the wiring205K is formed on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portions206bof the wirings205I and205J. The connection wiring206cof the wiring205K includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the third edge35. The second portion extends along the first direction X, from the second land portion206btoward the second edge34. The second portion is connected to the first portion. The first portion of the wiring205K is shorter than the first portion of the wiring205J.

The first land portion206aof the wiring205L is located on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion206bof the wiring205L. The first land portion206aof the wiring205L is located on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion206bof the wiring205K. The connection wiring206cof the wiring205L includes a first portion, a second portion, a third portion, and a fourth portion, each of which will be described hereunder. The first portion extends from the first land portion206atoward the third edge35. The second portion extends from the second land portion206btoward the fourth edge36. The third portion extends from the first portion along the first direction X. The fourth portion is connecting the second portion and the third portion. The fourth portion extends obliquely, so as to be closer to the first edge33, toward the third edge35of the substrate30.

The first land portion206aof the wiring205M is located on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion206bof the wiring205M. The first land portion206aof the wiring205M is located so as to overlap with the respective second land portions206bof the wirings205K and205L, as viewed in the second direction Y. The connection wiring206cof the wiring205M includes a first portion, a second portion, a third portion, and a fourth portion, each of which will be described hereunder. The first portion extends from the first land portion206atoward the third edge35. The second portion extends from the second land portion206btoward the fourth edge36. The third portion extends from the first portion along the first direction X. The fourth portion is connecting the second portion and the third portion. The fourth portion extends obliquely, so as to be closer to the first edge33, toward the third edge35of the substrate30.

The first land portion206aof the wiring205N is located on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion206bof the wiring205N. The first land portion206aof the wiring205N is located so as to overlap with the second land portion206bof the wiring205M, as viewed in the second direction Y. The connection wiring206cof the wiring205N includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the third edge35. The second portion extends along the second direction Y, from the second land portion206btoward the fourth edge36. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

The first land portion206aof the wiring205O is formed so as to overlap with the respective second land portions206bof the wirings205O and205N, as viewed in the second direction Y. The connection wiring206cof the wiring205O extends along the second direction Y.

The first land portion206aof the wiring205P is formed so as to overlap with the second land portion206bof the wiring205P, as viewed in the second direction Y. The connection wiring206cof the wiring205P extends along the second direction Y.

The second land portion206bof the wiring205Q is formed in the second cutaway portion203bof the island portion203. This second land portion206bhas, for example, a quadrate (square) shape in a plan view. The second land portion206bof the wiring205Q is larger in area than the respective second land portions206bof the wirings205I to205P. The second land portion206bof the wiring205Q is formed on the side of the first edge33, with respect to the transformer chip190X.

The control chip48is electrically connected to the semiconductor chips44X to46X, the wirings205S to205U, and the intermediary wirings207A to207C, via wires209A to209I exemplifying the first connection material. The wires209A to209I are connected to a face of the control chip48opposite to the face via which the control chip48is mounted on the island portion202, in the third direction Z. The wires209A to209I are, for example, formed of gold (Au). The wires209A to209I have the same wire diameter as each other. The wires209A to209I have the same wire diameter as the wires208A to208Q. Here, the wire diameter of the wires209A to209I, expressed as “the same as each other”, may differ by within ±5% between each other. In addition, the wire diameter and the material of the wire209A to209I may be modified as desired.

The second electrodes GP of the semiconductor chips41X to43X are connected to the control chip48, via the wires209A to209C, respectively. The wire209A is connected to the end portion of the control chip48on the side of the second edge34, in the first direction X. The wire209A is connected to the end portion of the control chip48on the side of the third edge35, in the second direction Y. The wire209B is connected to the end portion of the control chip48on the side of the third edge35, in the second direction Y. The wire209B is connected to a position on the control chip48on the side of the second edge34in the first direction X, with respect to the center of the control chip48in the first direction X. The wire209C is connected to the end portion of the control chip48on the side of the first edge33of the substrate30, in the first direction X. The wire209C is connected to the end portion of the control chip48on the side of the third edge35, in the second direction Y.

A first end portion of the wire209D is connected to the second land portion206bof the wiring205S. A second end portion of the wire209D is connected to the end portion of the control chip48on the side of the first edge33in the first direction X. The second end portion of the wire209D is connected to a position on the control chip48on the side of the fourth edge36in the second direction Y, with respect to the center of the control chip48in the second direction Y. Respective first end portions of two wires209E are connected to the second land portion206bof the wiring205T. Respective second end portions of the two wires209E are connected to the end portion of the control chip48on the side of the first edge33, in the first direction X. The second end portions of the two wires209E are each connected to a position on the control chip48between the second end portion of the wire209D and second end portions of two wires209F, in the second direction Y. Respective first end portions of the two wires209F are connected to the end portion of the control chip48on the side of the first edge33, in the first direction X. The first end portions of the two wires209F are connected to the end portion of the island portion202on the side of the third edge35, in the second direction Y. The second end portions of the two wires209F are connected to the end portion of the control chip48on the side of the first edge33, in the first direction X. Further, the second end portions of the two wires209F are connected to the end portion of the control chip48on the side of the third edge35, in the second direction Y.

The control chip48is connected to the intermediary wirings207A to207C, via the wires209G to209I. A first end portion of the wire209G is connected to the first land portion207aof the intermediary wiring207A. A second end portion of the wire209G is connected to the end portion of the control chip48on the side of the second edge34, in the first direction X. The second end portion of the wire209G is connected to a position on the control chip48on the side of the third edge35in the second direction Y, with respect to the center of the control chip48in the second direction Y. A first end portion of the wire209H is connected to the first land portion207aof the intermediary wiring207E. A second end portion of the wire209H is connected to a position on the control chip48adjacent to the second end portion of the wire209G, in the second direction Y. A first end portion of the wire209I is connected to the first land portion207aof the intermediary wiring207C. A second end portion of the wire209I is connected to a position on the control chip48adjacent to the second end portion of the wire209H, in the second direction Y.

As shown inFIG. 82, the primary-side circuit chip160X is connected to the second land portions206bof the wirings205I to205Q, and the island portion203, respectively via wires210A to210J exemplifying the first connection material. The wires210A to210J are connected to a face of the primary-side circuit chip160X opposite to the face via which the primary-side circuit chip160X is mounted on the island portion203in the third direction Z.

A first end portion of the wire210A is connected to the second land portion206bof the wiring205I. A second end portion of the wire210A is connected to the end portion of the primary-side circuit chip160X, on the side of the second edge34in the first direction X. The second end portion of the wire210A is connected to a position on the side of the fourth edge36in the second direction Y, with respect to the center of the primary-side circuit chip160X in the second direction Y. A first end portion of the wire210B is connected to the second land portion206bof the wiring205J. A second end portion of the wire210B is connected to the end portion of the primary-side circuit chip160X, on the side of the fourth edge36in the second direction Y. The second end portion of the wire210B is connected to a position on the primary-side circuit chip160X on the side of the second edge34in the first direction X, with respect to the center of the primary-side circuit chip160X in the first direction X. A first end portion of the wire210C is connected to the second land portion206bof the wiring205K. A second end portion of the wire210C is connected to the end portion of the primary-side circuit chip160X, on the side of the fourth edge36in the second direction Y. The second end portion of the wire210C is connected to a position on the primary-side circuit chip160X on the side of the second edge34in the first direction X, with respect to the center of the primary-side circuit chip160X in the first direction X. A first end portion of the wire210D is connected to the second land portion206bof the wiring205L. A second end portion of the wire210D is connected to the end portion of the primary-side circuit chip160X, on the side of the fourth edge36in the second direction Y. The second end portion of the wire210D is connected to a position on the primary-side circuit chip160X between the second end portion of the wire210C and the center of the primary-side circuit chip160X in the first direction X. A first end portion of the wire210E is connected to the second land portion206bof the wiring205M. A second end portion of the wire210E is connected to the end portion of the primary-side circuit chip160X, on the side of the fourth edge36in the second direction Y. The second end portion of the wire210B is connected to a position on the primary-side circuit chip160X on the side of the first edge33, with respect to the center of the primary-side circuit chip160X in the first direction X. A first end portion of the wire210F is connected to the second land portion206bof the wiring205N. A second end portion of the wire210F is connected to the end portion of the primary-side circuit chip160X, on the side of the fourth edge36of the substrate30in the second direction Y. The second end portion of the wire210F is connected to a position on the primary-side circuit chip160X on the side of the first edge33in the first direction X, with respect to the second end portion of the wire210E. A first end portion of the wire210G is connected to the second land portion206bof the wiring205O. A second end portion of the wire210G is connected to the end portion of the primary-side circuit chip160X, on the side of the fourth edge36in the second direction Y. The second end portion of the wire210G is connected to a position on the primary-side circuit chip160X on the side of the first edge33in the first direction X, with respect to the second end portion of the wire210F. A first end portion of the wire210H is connected to the second land portion206bof the wiring205P. A second end portion of the wire210H is connected to the end portion of the primary-side circuit chip160X, on the side of the fourth edge36in the second direction Y. The second end portion of the wire210G is connected to a position on the primary-side circuit chip160X on the side of the first edge33in the first direction X, with respect to the second end portion of the wire210G. Respective first end portions of the two wires210I are connected to the second land portion206bof the wiring205Q. Respective second end portions of the two wires210I are connected to the end portion of the primary-side circuit chip160X, on the side of the first edge33in the first direction X. The second end portions of the two wires210I are connected to the center of the primary-side circuit chip160X in the second direction Y. Respective first end portions of the two wires210J are connected to positions on the island portion203on the side of the third edge35, with respect to the second cutaway portion203b. Respective second end portions of the two wires210J are connected to the end portion of the primary-side circuit chip160X, on the side of the first edge33in the first direction X. The second end portions of the two wires210J are connected to the end portion of the primary-side circuit chip160X, on the side of the third edge35in the second direction Y. As described above, the primary-side circuit chip160X, the transformer chip190X, and the control chip48are electrically connected to each other via the wire s210A to210F, the plurality of wires211, and the plurality of wires212. Therefore, the primary-side circuit chip160X can output control signals for controlling the operation of the semiconductor chips41X to46X, to the control chip48through the transformer chip190X.

FIG. 83schematically illustrates an example of the cross-sectional structure of the semiconductor package1. InFIG. 83, the sizes of the respective elements of the semiconductor package1, and the positional relation among the elements, may not always accurately accord with those of the semiconductor package1shown inFIGS. 79 to 82.

As shown inFIG. 83, the control chip48, the primary-side circuit chip160X, and the transformer chip190X are not mounted on the lead frame20, but on the wiring pattern200formed on the substrate30. Accordingly, the control chip48, the primary-side circuit chip160X, and the transformer chip190X are located on the side of the first main surface31of the substrate30in the third direction Z, with respect to the semiconductor chips41X to46X (semiconductor chip45X inFIG. 83) mounted on the lead frame20. Therefore, out of the wires209A to209I connected to the control chip48, the wires209A to209C respectively connected to the semiconductor chips44X to46X are longer than the other wires209D to209I. In addition, the wires209A to209C are longer than the wires211and212, respectively connected to the primary-side circuit chip160X and the transformer chip190X.

Although not shown, the control chip47is also located on the side of the first main surface31of the substrate30in the third direction Z, with respect to the semiconductor chips41X to46X. Therefore, out of the wires208A to208Q connected to the control chip47, the wires208A to208C respectively connected to the semiconductor chips41X to43X are longer than the other wires208D to208Q,

The configuration of the transformer chip190X is, for example, similar to that of the transmission circuit chip4I shown inFIG. 51toFIG. 57.

Advantageous Effects

This embodiment provides the following advantageous effects, in addition to those provided by the first embodiment.

(8-1) The semiconductor package1includes the transformer190. Therefore, a noise or a surge voltage of the primary-side circuit160can be prevented from being transmitted to the secondary-side circuit170, when a signal of the primary-side circuit160is transmitted to the secondary-side circuit170.

(8-2) The first cutaway portion203ais formed in the island portion203. Accordingly, the distance between the primary-side circuit chip160X and the respective second land portions206bof the wirings205I and205J is shortened. Therefore, the wires210A and210B connecting the primary-side circuit chip160X and the wirings205I and205J can be shortened. In addition, the second cutaway portion203bis formed in the island portion203. Accordingly, the distance between the primary-side circuit chip160X and the second land portion206bof the wiring205Q is shortened. Therefore, the wire210I connecting the primary-side circuit chip160X and the wiring205Q can be shortened.

(8-3) The end portion of the wire212, connecting the transformer chip190X and the control chip48, on the side of the control chip48is connected to the end portion of the control chip48on the side of the fourth edge36. Therefore, the wire212can be shortened.

(8-4) The primary-side circuit chip160X, the transformer chip190X, and the control chip48are mounted on the island portion203and the island portion202, formed of the conductive material MP. Accordingly, the respective positions of the primary-side circuit chip160X, the transformer chip190X, and the control chip48in the third direction Z are barely different from each other, which enables the wires211and212to be shortened.

(8-5) The respective second land portions206bof the wirings205E and205G have the long sides extending along the second direction Y. Accordingly, the distance between the second land portion206bof the wiring205D and the second land portion206bof the wiring205F in the first direction X, and the distance between the second land portion206bof the wiring205F and the second land portion206bof the wiring205H are both shortened. Therefore, the distance between the diode49U mounted on the second land portion206bof the wiring205D and the control chip47is shortened, and also the distance between the diode49W mounted on the second land portion206bof the wiring205H and the control chip47is shortened. As result, the wire208D connecting the control chip47and the diode49U, and the wire208F connecting the control chip47and the diode49W can both be shortened.

(8-6) The respective second land portions206bof the wirings205B and205C have the long sides extending along the first direction X. These second land portions206bare aligned in the second direction Y, with a clearance therebetween. The mentioned configuration prevents the second land portions206bof the wirings205B and205C from forcing the second land portion206bof the wiring205D to be formed away from the island portion201in the second direction Y. Therefore, the distance between the diode49U mounted on the second land portion206bof the wiring205D and the control chip47is prevented from being extended, and consequently the wire208D connecting the diode49U and the control chip47can be prevented from being extended.

In this embodiment, in particular, the clearance between the second land portion206bof the wiring2053and the second land portion206bof the wiring205C in the second direction Y is made narrow, so that the second land portion206bof the wiring205C is prevented from protruding toward the fourth edge36, from the edge of the island portion201on the side of the fourth edge36. Such a configuration further suppresses an increase in length of the wire208D.

(8-7) The respective bonding portions28aof the lead frames28A to28C are aligned in the second direction Y, with a clearance between each other. In addition, the bonding portions28aof the lead frames28A to28C each overlap with the lead frame20D, as viewed in the second direction Y. Such an arrangement enables the number of terminals sticking out from the fourth face14of the first resin10to be increased, without incurring an increase in size of the substrate30in the first direction X.

(8-8) The respective bonding portions28aof the lead frames28A to28C have the long sides extending along the first direction X. Accordingly, the clearance between the lead frame28B and the lead frame28A, as well as the clearance between the lead frame28B and the lead frame28C, can be narrowed. Consequently, the lead frames28A to28C can be easily connected to the first region30B of the substrate30.

(8-9) The lead frames28I to28R constituting the terminals of the primary-side circuit160are located in the range between the end portion of the lead frame20B on the side of the second edge34and the end portion of the lead frame20D on the side of the first edge33. The mentioned arrangement makes the space for locating the terminals of the primary-side circuit160smaller in the first direction X, thereby contributing to reducing the size of the substrate30in the first direction X. Consequently, the size of the semiconductor package1in the first direction X can be reduced.

In this embodiment, in particular, the lead framed28I to28R are located in the range between the end portion of the semiconductor chip44X on the side of the second edge34and the end portion of the semiconductor chip46X on the side of the first edge33. Such an arrangement enables the space for locating the terminals of the primary-side circuit160to be further reduced in the first direction X, thereby enabling further reduction in size of the semiconductor package1in the first direction X.

(8-10) The wiring pattern200includes the intermediary wirings207A to207C. Accordingly, the control signal for the semiconductor chips41X to46X can be transmitted to the control chip47, through the control chip48and the intermediary wirings207A to207C. The primary-side circuit chip160X and the transformer chip190X can thus be shared by the control chips47and48, and therefore the number of parts of the semiconductor package1can be reduced.

Variations of Eighth Embodiment

The semiconductor package1according to the eighth embodiment may be without the arrangement to supply the source voltage VCC to the control chip47, and be configured to supply the source voltage VCC to the control chip47through the control chip48. For example, as shown inFIG. 84, the wiring pattern200may include an intermediary wiring213, which exemplifies a second intermediary wiring that relays the source voltage VCC between the control chip48and the control chip47. Here, the wires24A to24F are not shown inFIG. 84, for the sake of clarity.

First Variation of Eighth Embodiment

As shown inFIG. 85, the intermediary wiring213is formed so as to overlap with the intermediary wirings207A to207C, as viewed in the second direction Y. In other words, the intermediary wiring213is located adjacent to the intermediary wirings207A to207C, in the second direction Y. The intermediary wiring213is formed on the side of the fourth edge36, with respect to the intermediary wirings207A to207C. The intermediary wiring213is located on the side of the fourth edge36in the second direction Y, with respect to the control chips47and48. In an example, the intermediary wiring213is located on the side of the fourth edge36in the second direction Y, with respect to the island portions201and202. In the case where, for example, the island portions201and202are given a larger size in the second direction Y, and therefore the control chips47and48are shifted toward the fourth edge36from the positions shown inFIG. 85, the intermediary wiring213may overlap with the control chips47and48, as viewed in the second direction Y.

The intermediary wiring213is thicker than the intermediary wirings207A to207C, and the connection wiring204. The intermediary wiring213is located closer to the island portion201in the first direction X, than to the island portion202. In other words, the distance in the first direction X between the intermediary wiring213and the island portion201is shorter than the distance in the first direction X between the intermediary wiring213and the island portion202.

The positional relation between the intermediary wiring213and the intermediary wirings207A to207C along the second direction Y may be modified as desired. In an example, the intermediary wiring213may be located on the side of the connection wiring204in the second direction Y, with respect to the intermediary wirings207A to207C. The intermediary wiring213may be located on the side of the third edge35, with respect to the connection wiring204. The position of the intermediary wiring213in the second direction Y may be modified as desired. In an example, the intermediary wiring213may be located so as to overlap with the island portion203, as viewed in the second direction Y. Alternatively, the intermediary wiring213may be located so as to overlap with the diode49W, as viewed in the second direction Y.

Referring further toFIG. 85, the respective shapes of the intermediary wirings207A to207C are different from those of the intermediary wirings207A to207C of the semiconductor package1according to the eighth embodiment. More specifically, the respective connection wirings207cof the intermediary wirings207A to207C are connected to the end portions of the first land portion207aand the second land portion207bon the side of the fourth edge36in the second direction Y. In addition, the respective lengths of the intermediary wirings207A to207C in the first direction X are different from each other. The intermediary wiring207A is the longest in the first direction X, and the intermediary wiring207B is the shortest in the first direction X. As shown inFIG. 85, the intermediary wiring207B is shorter than the distance in the first direction X between the first land portion207aand the second land portion207bof the intermediary wiring207A. Accordingly, the intermediary wiring207B is formed close to the intermediary wiring207A. In other words, the intermediary wirings207A and207B are arranged such that the land portions207aand207bof the intermediary wiring207B respectively overlap with the land portions207aand207bof the intermediary wiring207A, as viewed in the first direction X (direction in which the control chips47and48are aligned). In the intermediary wirings207A to207C shown inFIG. 85, the edge of the intermediary wiring207A on the side of the fourth edge36is located so as to overlap with the edge of the control chip47on the side of the fourth edge36, as viewed in the first direction X.

The intermediary wiring213is connected to the control chip48via wires214A. The intermediary wiring213is also connected to the control chip47via wires2148. For example as shown inFIG. 85, the intermediary wiring213and the control chip48are connected via two wires214A. Respective first end portions of the wires214A are connected to the end portion of the control chip48, on the side of the second edge34in the first direction X. The first end portions of the wires214A are connected to the end portion of the control chip48, on the side of the fourth edge36in the second direction Y. Respective second end portions of the wires214A are connected to the end portion of the intermediary wiring213, on the side of the first edge33. The intermediary wiring213and the control chip47are connected via three wires214B. Respective first end portions of the three wires214B are connected to the end portion of the control chip47, on the side of the first edge33in the first direction X. The first end portions of the three wires214B are connected to the end portion of the control chip47, on the side of the fourth edge36in the second direction Y. Respective second end portions of the three wires214B are connected to the end portion of the intermediary wiring213, on the side of the second edge34. The wires214A and214B may be formed, for example, of the same material as the wires208A to208Q.

The mentioned configuration allows the frame for supplying the source voltage VCC to the control chip47to be omitted, thereby contributing to reducing the size of the semiconductor package1. In addition, locating the intermediary wirings207A and207B close to each other enables the intermediary wiring213to be located close to the control chips47and48, in the second direction Y. Therefore, the wires214A and214B can be shortened.

In the variation of the semiconductor package1shown inFIG. 84andFIG. 85, the wiring pattern200around the island portion201(control chip47) is modified. More specifically, while the lead frames28A to28H are provided for connection to the control chip47in the eighth embodiment, the lead frames28A to28G are used for connection to the control chip47, in the variation. Thus, the number of lead frames in the variation is one fewer than that of the eighth embodiment.

In the variation, the lead frame28A constitutes the VSU terminal. The lead frame28B constitutes the VBU terminal. The lead frame28C constitutes the VSV terminal. The lead frame28D constitutes the VBV terminal. The lead frame28E constitutes the VSW terminal. The lead frame28F constitutes the VBW terminal. The lead frame28G constitutes the first GND terminal. The positioning arrangement of the lead frames28A to28G is the same as that of the lead frame28A to28G according to the eighth embodiment. Because of the change in location of the terminals from that of the eighth embodiment, control the shape of the wiring pattern200connected to the chip47is changed.

In the variation, the wiring pattern200includes wirings215A to215G. The wirings215A and215B each constitute a boot strap circuit including the diode49U. The wirings215C and215D each constitute a boot strap circuit including the diode49V. The wirings215E and215F each constitute a boot strap circuit including the diode49W. The wiring215G is connected to the island portion201. Accordingly, the wiring215G constitutes a first ground pattern, in collaboration with the island portion201. The wirings215A to215F each include a first land portion215a, a second land portion215b, and a connection wiring215c. The connection wiring215cis connecting the first land portion215aand the second land portion215b. The wiring215G includes the first land portion215aand the connection wiring215c.

The first land portion215aof the wiring215A connected to the lead frame28A, the first land portion215aof the wiring215B connected to the lead frame28B, and the first land portion215aof the wiring215C connected to the lead frame28C each have, for example, a rectangular shape in a plan view. In an example, these first land portions215aeach have the long sides extending along the first direction X. The first land portion215aof the wiring215D connected to the lead frame28D, the first land portion215aof the wiring215E connected to the lead frame28E, the first land portion215aof the wiring215F connected to the lead frame28F, and the first land portion215aof the wiring215G connected to the lead frame28G each have, for example, a rectangular shape in a plan view. In an example, these first land portions215aeach have the long sides extending along the second direction Y.

The wirings215A and215B are formed on a region of the substrate30between the second edge34and the island portion201, in the first direction X. The wirings215D to215G are formed on a region of the substrate30between the fourth edge36and the island portion201, in the second direction Y. The respective second land portions215bof the wirings215A and215B are aligned in the second direction Y, with a clearance therebetween. The respective second land portions215bof the wirings215C to2015F are aligned in the first direction X, with a clearance between each other.

The second land portion215bof the wiring215A is formed adjacent to the island portion201on the side of the second edge34, with a clearance therefrom. The second land portion215bof the wiring215A has, for example, a rectangular shape in a plan view. In an example, the second land portion215bof the wiring215A has the long sides extending along the first direction X. The second land portion215bof the wiring215A is located at a position corresponding to the center of the island portion201in the second direction Y. The first land portion215aof the wiring215A is formed on the side of the second edge34of the substrate30, and on the fourth edge36, with respect to the second land portion215bof the wiring215A. The connection wiring215cof the wiring215A includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the first direction X, from the second land portion215btoward the second edge34. The second portion extends obliquely from the first portion toward the first land portion215a. The second portion is connected to the first land portion215a.

The second land portion215bof the wiring215B is formed adjacent to the island portion201on the side of the second edge34, with a clearance therefrom. The second land portion215bof the wiring215B is located on the side of the fourth edge36, with respect to the second land portion215bof the wiring215A. The second land portion215bof the wiring215B has, for example, a rectangular shape in a plan view. In an example, the second land portion215bof the wiring215B has the long sides extending along the second direction Y. The second land portion215bof the wiring215B extends beyond a position corresponding to the edge of the island portion201on the side of the fourth edge36. In other words, the second land portion215bof the wiring215B extends further toward the fourth edge36in the second direction Y, with respect to the island portion201. The first land portion215aof the wiring215B is formed on the side of the second edge34of the substrate30, and on the fourth edge36, with respect to the second land portion215bof the wiring215B. The connection wiring215cof the wiring215B includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the first direction X, from the end portion of the second land portion215bon the side of the fourth edge36, toward the second edge34. The second portion extends obliquely from the first portion toward the first land portion215a. The second portion is connected to the first land portion215a.

On the second land portion215bof the wiring215B, the diode49U is mounted via the conductive material MP. The diode49U is mounted on a region of the second land portion215bon the side of the fourth edge36. Here, the position of the diode49U with respect to the second land portion215bmay be modified as desired.

The second land portion215bof the wiring215C is formed adjacent to the island portion201on the side of the fourth edge36in the second direction Y, with a clearance therefrom. This second land portion215boverlaps with the end portion of the control chip47on the side of the second edge34, as viewed in the second direction Y. The second land portion215bof the wiring215C has, for example, a rectangular shape in a plan view. In an example, the second land portion215bof the wiring215C has the long sides extending along the second direction Y. The first land portion215aof the wiring215C is formed on the side of the second edge34of the substrate30, and on the fourth edge36, with respect to the second land portion215bof the wiring215C. The connection wiring215cof the wiring215C includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion215atoward the first edge33. The second portion extends along the second direction Y, from the end portion of the second land portion215bon the side of the fourth edge36, toward the second edge34. The third portion is connecting the first portion and the second portion. The third portion extends obliquely so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

The second land portion215bof the wiring215D is formed adjacent to the second land portion215bof the wiring215C, on the side of the first edge33. This second land portion215bhas, for example, a rectangular shape in a plan view. In an example, the second land portion215bof the wiring215D has the long sides extending along the second direction Y. The first land portion215aof the wiring215D is formed on the side of the second edge34of the substrate30, and on the fourth edge36, with respect to the second land portion215bof the wiring215D. The connection wiring215cof the wiring215D includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the first direction X, from the end portion of the second land portion215bon the side of the fourth edge36, toward the second edge34. The second portion extends along the first direction X, from the first land portion215atoward the first edge33. The third portion is connecting the first portion and the second portion. The third portion extends obliquely so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

On the second land portion215bof the wiring215D, the diode49V is mounted via the conductive material MP. The diode49V is mounted on a region of the second land portion215bon the side of the fourth edge36. Here, the position of the diode49V with respect to the second land portion215bmay be modified as desired.

The second land portion215bof the wiring215E is formed adjacent to the second land portion215bof the wiring215D, on the side of the first edge33. This second land portion215bhas, for example, a rectangular shape in a plan view. In an example, the second land portion215bof the wiring215E has the long sides extending along the second direction Y. The second land portion215bof the wiring215E is shorter in the first direction X, than the second land portion215bof the wiring215D. The first land portion215aof the wiring215E is formed on the side of the second edge34of the substrate30, and on the fourth edge36, with respect to the second land portion215bof the wiring215E. The connection wiring215cof the wiring215E includes a first portion, a second portion, a third portion, and a fourth portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion215atoward the third edge35, The second portion extends obliquely so as to be closer to the third edge35, toward the first edge33of the substrate30. The third portion extends along the first direction X, from the end portion of the second portion on the side of the first edge33, toward the first edge33. The fourth portion extends obliquely from the end portion of the third portion on the side of the first edge33, so as to be closer to the third edge35, toward the first edge33of the substrate30. The fourth portion is connected to the second land portion215b.

The second land portion215bof the wiring215F is formed adjacent to the second land portion215bof the wiring215E, on the side of the first edge33. This second land portion215bhas, for example, a rectangular shape in a plan view. In an example, the second land portion215bof the wiring215F has the long sides extending along the first direction X. As indicated by a dash-dot auxiliary line drawn in the second direction Y from the control chip47inFIG. 85, an edge of the second land portion215bof the wiring215F in the first direction X is located at the same position as the edge of the control chip47on the side of the first edge33, in the second direction Y. The first land portion215aof the wiring215F is formed on the side of the second edge34of the substrate30, and on the fourth edge36, with respect to the second land portion215bof the wiring215F. This first land portion215ais also formed on the side of the second edge34, with respect to the second land portion215bof the wiring215C. The connection wiring215cof the wiring215F includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the end portion of the second land portion215bon the side of the second edge34and on the side of the fourth edge36, toward the fourth edge36. The second portion extends along the second direction Y, from the first land portion215atoward the third edge35. The third portion is connecting the first portion and the second portion. The third portion extends obliquely so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

On the second land portion215bof the wiring215B, the diode49W is mounted via the conductive material MP. The diode49W is mounted on a region of the second land portion215bon the side of the first edge33. The conductive material MP employed to mount the diodes49U to49W is formed of the same material as the conductive material MP employed in the eighth embodiment, to mount the diodes49U to49W. Here, the position of the diode49W with respect to the second land portion215bmay be modified as desired.

The first land portion215aof the wiring215G is formed on the side of the second edge34, with respect to the end portion of the island portion201on the side of the first edge33. This first land portion215aoverlaps with the second land portion215bof the wiring215F, as viewed in the second direction Y. The first land portion215aof the wiring215G also overlaps with the control chip47. as viewed in the second direction Y. The connection wiring215cof the wiring215B is connected to the end portion of the island portion201on the side of the first edge33, and on the side of the fourth edge36. The connection wiring215cincludes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the island portion201toward the fourth edge36. The second portion extends from the first portion toward the first land portion215aof the wiring215G. The second portion extends obliquely so as to be closer to the fourth edge36, toward the second edge34of the substrate30. This connection wiring215cis thicker than the respective connection wirings215cof the wirings215A to215F.

Second Variation of Eighth Embodiment

The foregoing variation of the semiconductor package1may also be modified so as to include built-in capacitors93U,93V, and93W. For example as shown inFIG. 86, out of the lead frames connected to the control chip47, the lead frame constituting the first GND terminal is omitted.FIG. 86illustrates an example where the shapes and positions of the respective first land portions215aand second land portions215bof the wirings215B to215F remain unchanged, but only the second land portion215band the connection wiring215cof the wiring215A are changed, so as to allow the capacitors93U,93V, and93W to be mounted.

The second land portion215bof the wiring215A is located farther from the second land portion215bof the wiring215B in the second direction Y, compared with the second land portion215bshown inFIG. 84. In other words, the second land portion215bof the wiring215A is formed on the side of the third edge35, with respect to the second land portion215bof the wiring215A shown inFIG. 84. As viewed in the first direction X, the second land portion215bof the wiring215A is formed so as to overlap with the control chip47.

The capacitor93U is mounted on the wirings215A and215B. More specifically, a first terminal of the capacitor93U is connected to the connection wiring215cof the wiring215A. A second terminal of the capacitor93U is connected to the connection wiring215cof the wiring215B. The capacitor93U is mounted on the mentioned connection wirings215c, such that the first terminal and the second terminal are aligned along the second direction Y. The capacitor93U is located on the side of the second edge34of the substrate30, with respect to the control chip47, the diode49U, and the capacitor93V. The capacitor93U is located so as to overlap with the lead frames28E and28F, as viewed in the second direction Y. The second terminal of the capacitor93U is located so as to overlap with the lead frame28A, the diodes49U to49W, and the control chip47, as viewed in the first direction X.

The capacitor93V is mounted on the wirings215C and215D. More specifically, a first terminal of the capacitor93V is connected to the connection wiring215cof the wiring215C. A second terminal of the capacitor93V is connected to the connection wiring215cof the wiring215D. The capacitor93V is mounted on the mentioned connection wirings215c, such that the first terminal and the second terminal are aligned along the first direction X. The capacitor93V is located on the side of the fourth edge36of the substrate30, with respect to the capacitor93U. The capacitor93V is located so as to overlap with the control chip47, the lead frame28F, and the diodes49U and49V, as viewed in the second direction Y. The capacitor93V is located so as to overlap with the lead frames283and28C, as viewed in the first direction X.

The capacitor93W is mounted on the wirings215E and215F. More specifically, a first terminal of the capacitor93W is connected to the connection wiring215eof the wiring215E. A second terminal of the capacitor93W is connected to the connection wiring215cof the wiring215F. The capacitor93W is mounted on the mentioned connection wirings215c, such that the first terminal and the second terminal are aligned along the first direction X. The edge of the capacitor93W on the side of the fourth edge36is located between the edge of the capacitor93V on the side of the fourth edge36and the fourth edge36of the substrate30, in the second direction Y. The edge of the capacitor93W on the side of the third edge35is located so as to overlap with the capacitor93V, as viewed in the first direction X. The capacitor93W is located so as to overlap with the diode49W and the control chip47, as viewed in the second direction Y. The capacitor93W is located so as to overlap with the lead frames28B and28C, as viewed in the first direction X.

Ninth Embodiment

Referring toFIG. 87andFIG. 88, a semiconductor package according to a ninth embodiment will be described. The semiconductor package1according to this embodiment is different from the variations of the semiconductor package1according to the eighth embodiment shown inFIG. 84andFIG. 85, mainly in that the primary-side circuit chip160X, the transformer chip190X, and the control chip48are shifted toward the second edge34of the substrate30, that the control chip47is shifted toward the first edge33of the substrate30, and that an intermediary wiring216and intermediary wirings217A and217B are additionally provided. In the description given hereunder, similar elements to those of the variations of the eighth embodiment shown inFIG. 84andFIG. 85will be given the same numeral, and a part or the whole of the description thereof may be omitted. InFIG. 87, the wires24A to24F are omitted, for the sake of clarity.

As shown inFIG. 87, the control chip48is located so as to stride over in the first direction X, a position between the island portion22aof the lead frame20B and the island portion22aof the lead frame20C, in the first direction X. More specifically, the island portion202is formed so as to stride over the position between the island portion22aof the lead frame20B and the island portion22aof the lead frame20C, in the first direction X. The island portion202is formed so as to also stride over a position between the semiconductor chip44X and the semiconductor chip45X in the first direction X. The island portion202is formed in a range between the end portion of the semiconductor chip44X on the side of the second edge34and the end portion of the semiconductor chip45X on the side of the first edge33. In an example, the edge of the island portion202on the side of the second edge34in the first direction X is located so as to overlap with the semiconductor chip44X, as viewed in the second direction Y. The edge of the island portion202on the side of the first edge33in the first direction X is located so as to overlap with the semiconductor chip45X, as viewed in the second direction Y. InFIG. 87, the center of the island portion202in the first direction X coincides with the center in the first direction X, of a region between the semiconductor chip44X and the semiconductor chip45X, in the first direction X. In other words, the center of the island portion202in the first direction X coincides with the center in the first direction X, of the region between the island portion22aof the lead frame20B and the island portion22aof the lead frame20C in the first direction X.

The primary-side circuit chip160X and the transformer chip190X are located so as to overlap with the control chip47, as viewed in the second direction Y. The island portion203is spaced apart from the island portion202, in the second direction Y. The island portion203is, like the island portion202, also located on the side of the second edge34of the substrate30, with respect to the island portion203shown inFIG. 84andFIG. 85. The island portion203is formed between the lead frame28I and the lead frame28O, in the first direction X. In other words, the island portion203is formed so as to overlap with the lead frames28J to28N, as viewed in the second direction Y.

Because of the mentioned changes in position of the island portion202and the island portion203, toward the second edge34of the substrate30, the respective shapes of the wirings205I to205U (seeFIG. 88) are different from the shapes of the wirings205I to205U shown inFIG. 84andFIG. 85.

Since the island portion203has come closer to the lead frame28I in the first direction X, the second land portion206bof the wiring205I is formed on the side of the second edge34of the substrate30, with respect to the first land portion206aof the wiring205J. The second land portion206bof the wiring205J is formed on the side of the second edge34of the substrate30, with respect to the first land portion206aof the wiring205J. In addition, in the wiring205I, the second portion of the connection wiring206cextending from the second land portion206balong the second direction Y is shortened. In the wiring205J, the connection wiring206cis without the second portion. Therefore, the connection wiring206cof the wiring205J is connecting the second land portion206band the first land portion206a, only via the first portion extending in the first direction X.

In the wiring205K, the second land portion206bis formed on the side of the second edge34of the substrate30, with respect to the first land portion206aof the wiring205K. The second land portion206bof the wiring205K is formed so as to overlap with the first land portion206aof the wiring205J, as viewed in the second direction Y. In addition, the connection wiring206cof the wiring205K is formed so as to secure a space for forming the second land portion206band the connection wiring206cof the wiring205L, between the lead frame28K and the island portion203in the second direction Y. The connection wiring206cof the wiring205K includes a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the third edge35, The second portion extends along the second direction Y, from the second land portion206btoward the fourth edge36. The third portion extends along the first direction X. The third portion is located between the first portion and the second portion, in the second direction Y. The fourth portion is connecting an end portion of the third portion and the first portion. The fifth portion is connecting the other end portion of the third portion and the second portion. The fourth portion and the fifth portion each extend obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30of the substrate30.

In the wiring205L, the second land portion206bis formed on the side of the second edge34of the substrate30, with respect to the first land portion206aof the wiring205L. The second land portion206bof the wiring205L is formed so as to overlap with the first land portion206aof the wiring205K, as viewed in the second direction Y. In addition, the connection wiring206cof the wiring205L is formed so as to secure a space for forming the second land portion206bof the wiring205M and the second land portion206bof the wiring205N, between the lead frame28L and the island portion203in the second direction Y. The connection wiring206cof the wiring205L can be divided into a first portion, a second portion, a third portion, and a fourth portion. The first portion extends from the first land portion206a, along the second direction Y. The second portion extends obliquely from the second land portion206b, so as to be closer to the fourth edge36, toward the first edge33of the substrate30. The third portion extends along the first direction X, from the end portion of the second portion on the side of the first edge33toward the first edge33. The fourth portion is connecting the third portion and the first portion. The fourth portion extends obliquely so as to be closer to the fourth edge36, toward the first edge33of the substrate30.

In the wiring205M, the second land portion206bis formed on the side of the second edge34of the substrate30, with respect to the first land portion206aof the wiring205M. The second land portion206bof the wiring205M is formed so as to overlap with the first land portion206aof the wiring205L, as viewed in the second direction Y. The second land portion206bof the wiring205M protrudes toward the second edge34, from the first land portion206aof the wiring205L. In addition, the connection wiring206cof the wiring205M is formed so as to secure a space for forming the connection wiring206cof the wiring205N and the second land portion206bof the wiring205O. The connection wiring206cof the wiring205M has a similar shape to that of the connection wiring206cof the wiring205L. The third portion of the connection wiring206cof the wiring205M is longer than the third portion of the connection wiring206cof the wiring205L. Here, the respective second land portions206bof the wirings205K to205M according to this embodiment have a quadrate (square) shape in a plan view. The shape of the second land portions206bof the wirings205K to205M may be modified as desired. In an example, at least one of the second land portions206bof the wirings205K to205M has a rectangular shape in a plan view. At least one of the second land portions206bof the wirings205K to205M may have the long sides extending along the first direction X.

In the wiring205N, the second land portion206bis formed on the side of the second edge34of the substrate30, with respect to the first land portion206aof the wiring205N. The second land portion206bof the wiring205N is formed so as to overlap with the first land portion206aof the wiring205L, as viewed in the second direction Y. The second land portion206bof the wiring205N protrudes toward the first edge33, from the first land portion206aof the wiring205L. The second land portion206bof the wiring205N is formed on the side of the second edge34of the substrate30, with respect to the first land portion206aof the wiring205M. In addition, the connection wiring206cof the wiring205N is formed so as to secure a space for forming the connection wiring206cof the wiring205O and the second land portion206bof the wiring205P. The connection wiring206cof the wiring205N includes a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the third edge35. The second portion extends along the first direction X, from the second land portion206btoward the first edge33. The third portion extends along the first direction X. The third portion is located between the first portion and the second portion, in the first direction X and the second direction Y. The fourth portion is connecting the second portion and an end portion of the third portion. The fifth portion is connecting the first portion and the other end portion of the third portion. The fourth portion and the fifth portion each extend obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30.

In the wiring205O, the second land portion206bis formed on the side of the second edge34of the substrate30, with respect to the first land portion206aof the wiring205O. The second land portion206bof the wiring205O is formed so as to overlap with the first land portion206aof the wiring205M, as viewed in the second direction Y. In addition, the connection wiring206cof the wiring205O is formed so as to secure a space for forming the connection wiring206cof the wiring205P, and the second land portion206band the connection wiring206cof the wiring205P, between the lead frame28O and the second cutaway portion203bof the island portion203, in the second direction Y. The connection wiring206cof the wiring205O includes a first portion, a second portion, a third portion, and a fourth portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion206atoward the third edge35. The second portion extends obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30. The third portion extends along the first direction X, from the end portion of the second portion on the side of the first edge33. The fourth portion is connecting the end portion of the third portion on the side of the first edge33, and the first portion. The fourth portion extends obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30.

In the wiring205P, the second land portion206bis formed on the side of the second edge34of the substrate30, with respect to the first land portion206aof the wiring205P. The second land portion206bof the wiring205P is formed so as to overlap with the first land portion206aof the wiring205N, as viewed in the second direction Y. The second land portion206bof the wiring205P protrudes toward the second edge34, from the first land portion206aof the wiring205N. The first land portion206aof the wiring205P is formed on the side of the first edge33of the substrate30in the first direction X, with respect to the island portion203, The first land portion206aof the wiring205P is formed on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the island portion203. In addition, the connection wiring206cof the wiring205P includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the third edge35. The second portion extends along the first direction X, from the second land portion206btoward the first edge33. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30.

In the wiring205Q, the second land portion206bis formed on the side of the second edge34of the substrate30, with respect to the first land portion206aof the wiring205Q. The second land portion206bof the wiring205Q is formed between the first land portion206aof the wiring205N and the first land portion206aof the wiring205O, in the first direction X. The second land portion206bof the wiring205Q is formed on the side of the first edge33of the substrate30in the first direction X, with respect to the island portion203. The first land portion206aof the wiring205Q is formed on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the island portion203. In addition, the connection wiring206cof the wiring205Q is formed so as to surround the connection wiring206cof the wiring205P, from the side of the first edge33and the side of the third edge35. In other words, the connection wiring206cof the wiring205P has a similar shape to that of the connection wiring206cof the wiring205Q. The first portion of the connection wiring206cof the wiring205Q is longer than the first portion of the connection wiring206cof the wiring205P.

In the wiring205R, the first land portion206ais formed on the side of the first edge33of the substrate30, with respect to the island portion203. The connection wiring206cof the wiring205R includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the third edge35. The second portion extends along the first direction X, from the second cutaway portion203bof the island portion203toward the first edge33. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30.

The wiring205S is formed such that the second portion and the fifth portion of the connection wiring206cbecome longer, than the second portion and the fifth portion of the connection wiring206cof the wiring205S shown inFIG. 84andFIG. 85.

The wiring205T is formed such that the second portion and the fifth portion of the connection wiring206cbecome longer, than the second portion and the fifth portion of the connection wiring206cof the wiring205T shown inFIG. 84andFIG. 85. In addition, the wiring205T is thicker than the wiring205T shown inFIG. 84andFIG. 85. The wiring205T is, for example, the same in thickness as the wiring205U. The second portion of the connection wiring206cof the wiring205T is connected to a position in the island portion202on the side of the fourth edge36, with respect to the edge of the island portion202on the side of the third edge35.

An intermediary wiring216, exemplifying the fourth intermediary wiring, is formed in a region on the side of the third edge35of the substrate30, with respect to the second portion of the connection wiring206cof the wiring205U. The intermediary wiring216is spaced apart from the second portion of the connection wiring206cof the wiring205U, in the second direction Y. The intermediary wiring216extends along the first direction X. The intermediary wiring216is formed on the connection path between the control chip48and the semiconductor chip46X, which is the transistor most distant from the control chip48, among the semiconductor chips44X to46X. The intermediary wiring216is a wiring pattern connecting, for example, the control chip48and the second electrode GP of the semiconductor chip46X. The intermediary wiring216is formed on the side of the first edge33of the substrate30, with respect to the control chip47(island portion202). The intermediary wiring216is located so as to overlap with the island portion202, as viewed in the first direction X. The end portion of the intermediary wiring216on the side of the second edge34is opposed to the end portion of the island portion202on the side of the first edge33in the first direction X, with a clearance therebetween.

The intermediary wiring216extends along the first direction X, so as to stride over the semiconductor chip45X and the semiconductor chip46X. The intermediary wiring216is formed in a range between the end portion of the semiconductor chip45X on the side of the second edge34and the end portion of the semiconductor chip46on the side of the first edge33. In an example, the edge of the intermediary wiring216on the side of the first edge33is located so as to overlap with the second electrode GP of the semiconductor chip46X, or on the side of the first edge33with respect to the second electrode GP of the semiconductor chip46X, as viewed in the second direction Y. The edge of the intermediary wiring216on the side of the second edge34is located so as to overlap with the second electrode GP of the semiconductor chip44X, or on the side of the second edge34, with respect to the second electrode GP of the semiconductor chip44X, as viewed in the second direction Y. In this embodiment, the intermediary wiring216is the same in thickness as the connection wiring206cof the wiring205U. Further, the intermediary wiring216is the same in thickness as the connection wiring204.

The wire209C, connected to the second electrode GP of the semiconductor chip46X, is connected to the end portion of the intermediary wiring216on the side of the first edge33. As shown inFIG. 88, the end portion of the intermediary wiring216on the side of the second edge34and the control chip47are connected via the wire209J. The wire209J is connected to the end portion of the control chip47on the side of the first edge33, in the first direction X. In addition, the wire209J is connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y.

The island portion201is smaller in size in the first direction X, than the island portion201shown inFIG. 84andFIG. 85. The island portion201is formed on the side of the first edge33of the substrate30, with respect to the lead frame28F. In other words, the island portion201is formed on the side of the first edge33of the substrate30, with respect to the first land portion206aof the wiring205F. The island portion201is formed so as to overlap the lead frames28G and28H, as viewed in the second direction Y. Thus, the island portion201is formed so as to overlap the respective first land portions215aof the wirings215E and215H, as viewed in the second direction Y.

Since the island portion201is shifted toward the first edge33of the substrate30, compared with the island portion201shown inFIG. 84andFIG. 85, the positions of the respective second land portions215b, as well as the shapes of the respective connection wirings215c, of the wirings215A to215G are changed.

More specifically, the respective second land portions215bof the wirings215A and215B are formed on the side of the first edge33of the substrate30in the first direction X, with respect to the first land portion215aof the wiring215F. The second land portions215bof the wirings215A and215B are formed on the side of the second edge34of the substrate30in the first direction X, with respect to the first land portion215aof the wiring215G. The connection wiring215cof the wiring215A includes a first portion and a second portion, each of which will be described hereunder. The first portion extends obliquely from the first land portion215a, so as to be closer to the third edge35, toward the first edge33of the substrate30. The second portion extends along the first direction X, from the end portion of the first portion on the side of the first edge33, toward the second land portion215b. The second portion is connected to the second land portion215b. The connection wiring215cof the wiring215B includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion215atoward the first edge33. The second portion extends along the first direction X, from the second land portion215btoward the second edge34. The third portion is connecting the first portion and the second portion. The third portion is located between the first portion and the second portion, in the first direction X. The third portion extends obliquely, so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

The second land portion215bof the wiring215C is formed on the side of the first edge33of the substrate30in the first direction X, with respect to the first land portion215aof the wiring215F. The second land portion215bof the wiring215C is formed on the side of the second edge34of the substrate30in the first direction X, with respect to the first land portion215aof the wiring215G. The distance between the second land portion215bof the wiring215C and the second land portion215bof the wiring215B is shorter than the distance therebetween shown inFIG. 84andFIG. 85. The second land portion215bof the wiring215C is formed so as to overlap with the end portion of the island portion201on the side of the second edge34, as viewed in the second direction Y. The second land portion215bof the wiring215C is formed on the side of the second edge34of the substrate30, with respect to the control chip47. The connection wiring215cof the wiring215C includes a first portion and a second portion, each of which will be described hereunder. The first portion extends obliquely from the first land portion215a, so as to be closer to the third edge35, toward the first edge33of the substrate30. The second portion extends along the first direction X, from the end portion of the first portion on the side of the first edge33, toward the second land portion215b. The second portion is connected to the second land portion215b.

The second land portion215bof the wiring215D is formed so as to overlap with the first land portion215aof the wiring215G, as viewed in the second direction Y. The second land portion215bof the wiring215D protrudes toward the second edge34, from the first land portion215aof the wiring215G. The second land portion215bof the wiring215D is larger in size in the second direction Y, than the second land portion215bof the wiring215D shown inFIG. 84andFIG. 85. The connection wiring215cof the wiring215D includes a first portion, a second portion, and a third portion, like the connection wiring215cof the wiring215D shown inFIG. 84andFIG. 85. In this embodiment, the second portion of the connection wiring215cof the wiring215D is longer than that shown inFIG. 84andFIG. 85. In this embodiment, he first portion of the connection wiring215cof the wiring215D is shorter than that shown inFIG. 84andFIG. 85.

The second land portion215bof the wiring215E is formed between the first land portion215aof the wiring215G and the first land portion215aof the wiring215H, in the first direction X. The size of this second land portion215bin the first direction X is smaller than the clearance between the first land portion215awiring215G and the first land portion215aof the wiring215H. The second land portion215bof the wiring215E is larger in size in the second direction Y, than the second land portion215bof the wiring215E shown inFIG. 84andFIG. 85. In addition, the second land portion215bof the wiring215E is larger in size in the second direction Y, than the second land portion215bof the wiring215D shown inFIG. 84andFIG. 85. The connection wiring215cof the wiring215E includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion215atoward the third edge35. The second portion extends along the first direction X, from the second land portion215btoward the second edge34. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

The second land portion215bof the wiring215F is formed so as to overlap with the first land portion215aof the wiring215H, as viewed in the second direction Y. The second land portion215bof the wiring215F protrudes toward the first edge33, from the first land portion215aof the wiring215H. The connection wiring215cof the wiring215F includes a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion215atoward the third edge35. The second portion extends along the second direction Y, from the second land portion215btoward the fourth edge36. The third portion extends along the first direction X. The fourth portion is connecting the first portion and an end of the third portion. The fifth portion is connecting the second portion and the other end of the third portion. The fourth portion and the fifth portion each extend obliquely, so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

The connection wiring215cof the wiring215G includes a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends obliquely from the first land portion215a, so as to be closer to the first edge33, toward the third edge35of the substrate30. The second portion extends along the second direction Y, from the end portion of the island portion201on the side of the first edge33and on the side of the fourth edge36, toward the fourth edge36. The third portion extends along the first direction X. The fourth portion is connecting the first portion and an end of the third portion. The fifth portion is connecting the second portion and the other end of the third portion. The fourth portion and the fifth portion each extend obliquely, so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

In this embodiment, further, the lead frame28H is located adjacent to the lead frame28G. The lead frame28H constitutes the first VCC terminal. The wiring pattern200includes the wiring215H connected to the lead frame28H. The wiring215H is a power source pattern that supplies the source voltage VCC to the control chips47and48. The connection wiring215cof the wiring215H includes first to fourth portions215eto215h. The first portion215eis formed at the same position as the intermediary wirings207A to207C, in the first direction X. The first portion215eis spaced apart from the intermediary wiring207A, on the side of the fourth edge36of the substrate30. The second portion215fextends along the second direction Y, from the end portion of the first portion215eon the side of the second edge34, toward the fourth edge36. The third portion215gextends obliquely from the end portion of the second portion215ftoward the second edge34and the fourth edge36. The fourth portion215hextends along the first direction X, from the third portion215gtoward the second edge34. The fourth portion215his connected to the first land portion215a.

The wiring215H and the control chip47are connected via the wires208T. In this embodiment, the wiring215H and the control chip47are connected via three wires208T. Respective first end portions of the wires208T are connected to the joint portion between the first portion215eand the second portion215f, of the wiring215H. This joint portion is the position closest to the control chip47, in the wiring215H. Respective second end portions of the wires208T are connected to the end portion of the control chip47on the side of the first edge33, in the first direction X. The second end portions of the wires208T are connected to the end portion of the control chip47on the side of the fourth edge36, in the second direction Y.

The wiring215H and the control chip48are connected via the wires209K. In this embodiment, the wiring215H and the control chip48are connected via two wires209K. Respective first end portions of the wires209K are connected to the distal end portion of the wiring215H. This distal end portion is the position closest to the control chip48, in the wiring215H. Respective second end portions of the wires209K are connected to the end portion of the control chip48on the side of the second edge34, in the first direction X. The second end portions of the wires209K are connected to the end portion of the control chip48on the side of the fourth edge36, in the second direction Y.

In a region on the side of the second edge34of the substrate30with respect to the island portion201, the intermediary wirings217A and217B, exemplifying the third intermediary wiring, are provided. The intermediary wiring217A is formed on the connection path between the control chip47and the semiconductor chip41X, which is the transistor most distant from the control chip47, among the semiconductor chips41X to43X. The intermediary wiring217A is a wiring pattern electrically connecting the control chip47and the second electrode GP of the semiconductor chip41X. The intermediary wirings217A and217B are aligned in the second direction Y, with a clearance therebetween. The intermediary wirings217A and217B each extend along the first direction X. The intermediary wiring217B is formed on the side of the fourth edge36of the substrate30, with respect to the intermediary wiring217A. The intermediary wiring217A is located so as to overlap with the island portion201, as viewed in the first direction X.

The intermediary wiring217B has an L-shape in a plan view. The intermediary wiring217B is longer in the first direction X than the intermediary wiring217A. The intermediary wiring217B is formed so as to surround the intermediary wiring217A, from the side of the fourth edge36and the side of the second edge34. The intermediary wiring217B includes an extension217xextending along the second direction Y, from a position on the side of the second edge34of the substrate30, with respect to the intermediary wiring217A. The extension217xis formed so as to overlap with the intermediary wiring217A, as viewed in the first direction X. The extension217xis formed in a rectangular shape, having the long sides extending along the second direction Y, in a plan view. The extension217xis larger in the first direction X, than the width of the remaining portion of the intermediary wiring217B in the second direction Y.

The intermediary wiring217B and the control chip47are connected via the wire208R. A first end portion of the wire208R is connected to the end portion of the intermediary wiring217B on the side of the first edge33. A second end portion of the wire208R is connected to the end portion of the control chip47on the side of the second edge34, in the first direction X. In addition, the second end portion of the wire208R is connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y.

The extension217xand the first electrode SP of the semiconductor chip41X are connected via the wire208A. An end portion of the wire208A is connected to the end portion of the extension217xon the side of the third edge35of the substrate30, and the other end portion is connected to a position on the first electrode SP of the semiconductor chip41X, on the side of the second edge34of the substrate30with respect to the second electrode GP. Thus, the first electrode SP of the semiconductor chip44X and the control chip47are electrically connected, via the wire208A, the intermediary wiring217A, and the wire208R.

The intermediary wiring217A and the control chip47are connected via the wire208S. A first end portion of the wire208S is connected to the end portion of the intermediary wiring217A on the side of the first edge33. A second end portion of the wire208S is connected to the end portion of the control chip47on the side of the second edge34, in the first direction X. In addition, the second end portion of the wire208S is connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y. The wire208A, connected to the second electrode GP of the semiconductor chip44X, is connected to the end portion of the intermediary wiring217A on the side of the second edge34. Thus, the second electrode GP of the semiconductor chip44X and the control chip47are electrically connected, via the wire208A, the intermediary wiring217A, and the wire208S.

Further, since the island portions201and202are brought closer to each other, the length of the connection wiring204in the second direction Y, and the length and shape of the intermediary wirings207A to207C are different from those of the connection wiring204and the intermediary wirings207A to207C shown inFIG. 84andFIG. 85.

The connection wiring204includes a widened portion204x, formed at the end portion connected to the island portion201. The widened portion204xis formed so as to overlap with the intermediary wiring207C, as viewed in the first direction X. To the widened portion204x, the wire208N is connected.

In the intermediary wirings207A and207B, the plan-view shapes of the respective first land portions207aand the second land portions207bare modified to a quadrate (square) shape. In addition, the respective connection wirings207cof the intermediary wirings207A and207B are shorter than the connection wirings207cof the intermediary wirings207A and207B shown inFIG. 84andFIG. 85. The length in the first direction X of the intermediary wiring207A is equal to that of the intermediary wiring207B.

The first end portion of the connection wiring207cof the intermediary wiring207A is connected to the center of the first land portion207aof the intermediary wiring207A, in the second direction Y. The second end portion of the connection wiring207cof the intermediary wiring207A is connected to the center of the second land portion207bof the intermediary wiring207A, in the second direction Y. The first end portion of the connection wiring207cof the intermediary wiring207B is connected to the end portion of the first land portion207aof the intermediary wiring207B, on the side of the fourth edge36, in the second direction Y. The second end portion of the connection wiring207cof the intermediary wiring207B is connected to the end portion of the second land portion207bof the intermediary wiring207B, on the side of the fourth edge36.

The intermediary wiring207C is shorter in the first direction X, than the intermediary wirings207A and207B. The first land portion207aand the second land portion207bof the intermediary wiring207C are formed so as to overlap with a part of the first land portion207aand second land portion207bof the intermediary wiring207B, as viewed in the first direction X.

Advantageous Effects

This embodiment provides the following advantageous effects.

(3-1) The control chip47is located adjacent to the island portion21aof the lead frame20A, in the second direction Y. In addition, the control chip47is located so as to overlap with the semiconductor chips42X and43X, as viewed in the second direction Y. Such a configuration enables the wires208B, connecting the control chip47and the second electrode GP and first electrode SP of the semiconductor chip42X, and the wires208C, connecting the control chip47and the second electrode GP and first electrode SP of the semiconductor chip43X, to be shortened.

In addition, the wiring pattern200includes the intermediary wirings217A and217B. The respective first end portions of the intermediary wirings217A and217B are located close to the control chip47. The respective second end portions of the intermediary wirings217A and217B are located so as to overlap with the semiconductor chip41X, as viewed in the second direction Y. Therefore, the wire208A connected to the second electrode GP can be shortened, because of being connected to the intermediary wiring217A. Likewise, the wire208A connected to the first electrode SP can be shortened, because of being connected to the intermediary wiring217B. In this embodiment, in particular, the intermediary wiring217B includes the extension217x, extending toward the semiconductor chip41X along the second direction Y. The wire208A connected to the second electrode GP is connected to the extension217x. Therefore, the wire208A connected to the second electrode GP can be further shortened.

As described above, the wires208A to208C can each be shortened. Therefore, when the material for forming the first resin10flows into the cavity of a mold, in the forming process of the first resin10, the wires208A to208C can be prevented from being deformed by the flow of the resin, thereby being electrically connected to other elements of the semiconductor package1.

(3-2) The control chip48is located between the semiconductor chip44X and the semiconductor chip45X, in the first direction X. In other words, the control chip48is located closer to the semiconductor chips44X and45X, than to the semiconductor chip46X. Therefore, the wire209A connecting the control chip48and the second electrode GP of the semiconductor chip44X, and the wire209B connecting the control chip48and the second electrode GP of the semiconductor chip45X, can both be shortened.

Further, the wiring pattern200includes the intermediary wiring216. The first end portion of the intermediary wiring216is located close to the control chip48. The second end portion of the intermediary wiring216is formed so as to overlap with the semiconductor chip46X, as viewed in the second direction Y. Therefore, the wire209C can be shortened, because the wire209C, connected to the second electrode GP of the semiconductor chip46X, is connected to the intermediary wiring216. In particular, since the intermediary wiring216is formed so as to overlap with the second electrode GP of the semiconductor chip46X, as viewed in the second direction Y, the wire209C connecting the second electrode GP and the intermediary wiring216extends along the second direction Y, in a plan view. Consequently, the wire209C can be further shortened.

As described above, the wires209A to209C can each be shortened. Therefore, when the material for forming the first resin10flows into the cavity of a mold, in the forming process of the first resin10, the wires208A to208C can be prevented from being deformed by the flow of the resin, thereby being electrically connected to other elements of the semiconductor package1.

(3-3) The first land portion207aand the second land portion207bof the intermediary wiring207C are each formed so as to overlap with a part of the first land portion207aand second land portion207bof the intermediary wiring207B, as viewed in the first direction X. Such a configuration enables reduction in size in the second direction Y, of the space for forming the intermediary wirings207A to207C, which are aligned in the second direction Y. Therefore, the connection wiring204can be made thicker. Further, the distance between the first portion215eand the control chips47and48can be shortened, because of forming the first portion215eof the wiring215H on the side of the connection wiring204in the second direction Y. Consequently, the wire208T connecting the first portion215eand the control chip47, and the wire209K connecting the first portion215eand the control chip48, can both be shortened.

Tenth Embodiment

Referring toFIG. 89toFIG. 92, a semiconductor package1according to a tenth embodiment will be described. The semiconductor package1according to this embodiment is different from the semiconductor package1according to the eighth embodiment, mainly in including primary-side circuit chips160Y and160Z, and transformer chips190Y and190Z, in place of the primary-side circuit chip160X and the transformer chip190X. In the description given hereunder, similar elements to those of the eighth embodiment will be given the same numeral, and a part or the whole of the description thereof may be omitted. InFIG. 89, the wires24A to24F are omitted, for the sake of clarity.

As shown inFIG. 89, the primary-side circuit chip160Y exemplifying the first signal transmission unit, the transformer chip190Y exemplifying the first transformer, and the control chip47are electrically connected to each other, via an intermediary chip310exemplifying the signal reception unit. Accordingly, the control signal for controlling the operation of the semiconductor chips41X to43X is inputted to the control chip47, through the primary-side circuit chip160Y, the transformer chip190Y, and the intermediary chip310. The control chip47controls the operation of the semiconductor chips41X to43X, according to the control signal.

The intermediary chip310includes one or a plurality of electrical elements, encapsulated in a resin material. The intermediary chip310is larger in size in the first direction X, than the primary-side circuit chip160Y, The intermediary chip310is smaller in size in the first direction X, than the control chip47. The intermediary chip310has the same size in the second direction Y, as the control chip47. Here, the size of the intermediary chip310in the second direction Y, expressed as “the same as the control chip47in the second direction Y”, may differ by within ±5% of the size of the intermediary chip310in the second direction Y.

Likewise, the primary-side circuit chip160Z exemplifying the second signal transmission unit, the transformer chip190Z exemplifying the second transformer, and the control chip48are electrically connected to each other, via an intermediary chip310exemplifying the signal reception unit. Accordingly, the control signal for controlling the operation of the semiconductor chips44X to46X is inputted to the control chip48, through the primary-side circuit chip160Z and the transformer chip190Z. The control chip48controls the operation of the semiconductor chips44X to46X, according to the control signal.

As shown inFIG. 89, the primary-side circuit chip160Y and the primary-side circuit chip160Z are provided independently from each other, in this embodiment. The primary-side circuit chip160Y is located adjacent to the transformer chip190Y. Likewise, the transformer chip190Y and the transformer chip190Z are provided independently from each other. The primary-side circuit chip160Z is located adjacent to the transformer chip190Z.

The lead frames28A to28U each exemplify a second lead frame. The lead frames28A to28H and28S to28U each exemplify a secondary-side lead frame constituting the terminal of the secondary-side circuit170(seeFIG. 18). The lead frames28I to28R each exemplify a primary-side lead frame constituting the primary-side circuit160(seeFIG. 18).

The lead frames28A to28U may constitute the terminals, for example as follows. The lead frame28A constitutes the VSU terminal. The lead frame28B constitutes the VBU terminal. The lead frame28C constitutes the VSV terminal. The lead frame28D constitutes the VBV terminal. The lead frame283constitutes the VSW terminal. The lead frame28F constitutes the VBW terminal. The lead frame28G constitutes the first VCC terminal. The lead frame28H constitutes the first GND terminal. The lead frame28I constitutes the HINU terminal. The lead frame28J constitutes the HINV terminal. lead frame28K constitutes the HINW terminal. The lead frame28L constitutes the third VCC terminal. The lead frame28M constitutes the LINU terminal. The lead frame28N constitutes the LINV terminal. The lead frame28O constitutes the LINW terminal. The lead frame28P constitutes the FO terminal. The lead frame28Q constitutes the VOT terminal. The lead frame28R constitutes the third GND terminal. The lead frame28S constitutes the CIN terminal (detection terminal CIN). The lead frame28T constitutes the second VCC terminal. The lead frame28U constitutes the second GND terminal.

As shown inFIG. 90, the semiconductor package1according to this embodiment includes a wiring pattern300, in place of the wiring pattern200. The wiring pattern300is formed in the first region30B of the substrate30. The conductive material MP is employed to form the wiring pattern300. The wiring pattern300is formed by sintering the conductive material MP. Examples of the material of the conductive material MP include silver (Ag), copper (Cu), and gold (Au). In this embodiment, the conductive material MP is formed of silver.

The wiring pattern300includes an island portion301exemplifying the first island portion, an island portion302exemplifying the second island portion, an island portion303exemplifying the third island portion, an island portion304exemplifying the fourth island portion, and wirings307A to307U. On the island portion301, the control chip47exemplifying the first control circuit chip, and the intermediary chip310are mounted. On the island portion302, the control chip48exemplifying the second control circuit chip is mounted. On the island portion303, the primary-side circuit chip160Y and the transformer chip190Y are mounted. The island portion303is formed adjacent to the island portion301. On the island portion304, the primary-side circuit chip160Z and the transformer chip190Z are mounted. The island portion304is formed adjacent to the island portion302. The wirings307A to307U are respectively connected to the lead frames28A to28U.

The wirings307A to307U each include a first land portion308a, connected to a corresponding one of the lead frames28A to28U. The respective first land portions308aof the wirings307A and307B are formed between the island portion301and the second edge34of the substrate30, in the first direction X. The first land portions308aof the wirings307A and307B are formed on the side of the second edge34in the first direction X, with respect to the center of a region between the island portion301and the second edge34of the substrate30in the first direction X. The first land portions308aof the wirings307A and307B are aligned in the second direction Y, with a clearance therebetween. The respective first land portions308aof the wirings307C to307R are formed between the island portion303and the fourth edge36of the substrate30, in the second direction Y. The first land portions308aof the wirings307C to307R are formed on the side of the fourth edge36in the second direction Y, with respect to the center of a region between the island portion303and the fourth edge36of the substrate30in the second direction Y. The first land portions308aof the wirings307C to307R are aligned in the first direction X, with a clearance between each other. The first land portions308aof the wirings307S to307U are formed between the island portion303and the first edge33of the substrate30, in the first direction X. The first land portions308aof the wirings307S to307U are formed on the side of the first edge33in the first direction X, with respect to the center of a region between the island portion303and the first edge33of the substrate30in the first direction X. The first land portions308aof the wirings307S to307U are aligned in the second direction Y, with a clearance between each other.

More specifically, the wirings307D to307G are formed such that the first land portion308aof the wiring307D and the first land portion308aof the wiring307E, and the first land portion308aof the wiring307F and the first land portion308aof the wiring307G, are spaced apart from each other in the first direction X by an eighth clearance GR8. The wirings307D to307H are formed such that the first land portion308aof the wiring307C and the first land portion308aof the wiring307D, the first land portion308aof the wiring307E and the first land portion308aof the wiring307F, and the first land portion308aof the wiring307G and the first land portion308aof the wiring307H, are spaced apart from each other in the first direction X, by a ninth clearance GR9narrower than the eighth clearance GR8. The wirings307I to307R are formed such that two of the first land portions308aof the wiring307I to307R, adjacent to each other in the first direction X, are spaced apart from each other by the ninth clearance GR9. The wirings307A and307B are formed such that the first land portion308aof the wiring307A and the first land portion308aof the wiring307B are spaced apart from each other by a tenth clearance GR10, wider than the ninth clearance GR9but narrower than the eighth clearance GR8. The wirings307S to307U are formed such that two of the first land portions308a, adjacent to each other in the second direction Y, are spaced apart from each other by the tenth clearance GR10. Here, the tenth clearance GR10may be modified as desired. For example, the tenth clearance GR10may have the same width as the ninth clearance GR9.

The wirings307A to307F,307I to307Q, and307S,307T each include a second land portion308b, and a connection wiring308cconnecting the first land portion308aand the second land portion308b. The wirings307G,307H,307R, and307U each include the connection wiring308cconnected to the first land portion308a. In other words, the wirings307G,307H,307R, and307U are without the second land portion308b.

The lead frames28A to28U are each connected to the first land portion308aof the corresponding one of the wirings307A to307U, via a bonding material SD9(not shown inFIGS. 89 and 39). As shown inFIG. 90, the bonding material SD9is exposed to the surface of the respective bonding portions28aof the lead frames28A to28U opposite to the substrate30, through the through hole28dformed in the bonding portion28a. Accordingly, the bonding area between the lead frames28A to28U and the bonding material SD9is increased, and therefore the adhesion strength of the lead frames28A to28U to the substrate30can be enhanced. For example, the bonding material SD9may be solder, as in the eighth embodiment.

Referring toFIG. 89toFIG. 92, the configuration of the wiring pattern300will be described in further detail. The island portion301is formed adjacent to the lead frame20A in the second direction Y. The island portion301has, for example, a rectangular shape in a plan view. In an example, the island portion301has the long sides extending along the first direction X. The island portion301is located so as to overlap with the island portion21aof the lead frame20A, as viewed in the second direction Y. In this embodiment, the center of the island portion301in the first direction X is on the side of the first edge33in the first direction X, with respect to the center of the island portion21aof the lead frame20A in the first direction X. The island portion301is larger in size in the first direction X, than the semiconductor chips41X to43X. The island portion301is smaller in size in the first direction X, than the island portion21aof the lead frame20A. As indicated by a dash-dot auxiliary line drawn from the island portion301along the second direction Y inFIG. 89, the end portion of the island portion301on the side of the first edge33in the first direction X overlaps with the semiconductor chip43X, as viewed in the second direction Y. In this embodiment, the edge of the island portion301on the side of the first edge33overlaps with the second electrode GP of the semiconductor chip43X. As indicated by another dash-dot auxiliary line drawn from the island portion301along the second direction Y inFIG. 89, the end portion of the island portion301on the side of the second edge34is located on the side of the first edge33in the first direction X, with respect to the semiconductor chip41X, but on the side of the second edge34of the substrate30, with respect to the semiconductor chip42X. As shown inFIG. 90, in addition, as viewed in the second direction Y, the island portion301overlaps with each of the first land portions308aof the wirings307F to307H. In contrast, the island portion301is not overlapping with any of the first land portions308aof the wirings307A to307E. In other words, the island portion301overlaps with the lead frames28F to28H, as viewed in the second direction Y. However, the island portion301is not overlapping with the lead frames28A to28E.

The control chip47and the intermediary chip310are mounted on the island portion301, via the conductive material MP. In this embodiment, silver is employed to form the conductive material MP. Though not shown, the conductive material MP protrudes from the periphery of the control chip47and the intermediary chip310, but remains within the island portion301, in a plan view. Thus, the size of the island portion301, in relation to the size of the control chip47and the intermediary chip310, is determined so as to suppress the conductive material MP from protruding outwardly. The control chip47is located in a region of the island portion301on the side of the second edge34, in the first direction X. The intermediary chip310is located in a region of the island portion301on the side of the first edge33, in the first direction X. The control chip47and the intermediary chip310are each located in a region of the island portion301on the side of the fourth edge35, in the second direction Y.

As shown inFIG. 89, the island portion302is formed adjacent to the lead frames20C and20D, in the second direction Y. The island portion302is formed so as to overlap with the lead frames20C and20D, as viewed in the second direction Y. The island portion302and the island portion301are aligned along the first direction X. The island portion302has, for example, a rectangular shape in a plan view. In an example, the island portion302has the long sides extending along the first direction X. The island portion302is smaller in size in the second direction Y, than the island portion301. The island portion302is smaller in size in the first direction X, than the island portion301. As viewed in the second direction Y, the edge of the island portion302on the side of the second edge34overlaps with the lead frame20C. The edge of the island portion302on the side of the first edge33overlaps with the lead frame20D. In addition, as viewed in the second direction Y, the edge of the island portion302on the side of the second edge34overlaps with the end portion of the semiconductor chip45X on the side of the second edge34. The edge of the island portion302on the side of the first edge33is formed on the side of the second edge34of the substrate30, with respect to the semiconductor chip46X. The edge of the island portion302on the side of the first edge33is located on the side of the semiconductor chip46X in the first direction X, with respect to the center in the first direction X, of a region between the semiconductor chip45X and the semiconductor chip46X in the first direction X.

As viewed in the second direction Y, the island portion302overlaps with the respective first land portions308aof the wirings307M to307Q. However, the island portion302is not overlapping with any of the first land portions308aof the wirings307I to307L, and307R. Thus, the island portion302overlaps with the lead frames28M to28Q, as viewed in the second direction Y. However, the island portion302is not overlapping with the lead frames28I to28L, and28R. In other words, the island portion302is formed on the side of the first edge33of the substrate30in the first direction X, with respect to the lead frame28L. The island portion302is formed on the side of the second edge34of the substrate30in the first direction X, with respect to the lead frame28R. As shown inFIG. 89andFIG. 90, the lead frames28I to28L are located between the island portion301and the island portion302in the first direction X.

The control chip48is mounted on the island portion302, via the conductive material MP. Though not shown, the conductive material MP protrudes, in a plan view, from the control chip48toward the fourth edge36of the substrate30and to both sides in the first direction X, but not toward the third edge35of the substrate30. In addition, the conductive material MP remains within the island portion302. Thus, the size of the island portion302, in relation to the size of the control chip48, is determined so as to suppress the conductive material MP from protruding outwardly. The control chip48is located at the center of the island portion302, both in the first direction X and in the second direction Y.

The island portion301and the island portion302are connected via a connection wiring305. More precisely, the island portion301and the island portion302are electrically connected, via the connection wiring305. The connection wiring305extends along the first direction X. The respective edges of the connection wiring305, the island portion301, and the island portion302on the side of the second region30A in the second direction Y are linearly aligned. The island portion302is connected to the wiring307U.

The wirings307A and307B are formed on the side of the second edge34of the substrate30in the first direction X, with respect to the island portion301. The wirings307C to307H are formed on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the island portion301. The respective first land portions308aof the wirings307A to307H each have a rectangular shape in a plan view. In an example, the first land portions308aof the wirings307A to307H each have the long sides extending along the first direction X.

The wirings307A and307B are the wiring pattern constituting a boot strap circuit including the diode49U. The wirings307C and307D are the wiring pattern constituting a boot strap circuit including the diode49V. The wirings307E and307F are the wiring pattern constituting a boot strap circuit including the diode49W.

The respective second land portions308bof the wirings307A to307C are aligned in the second direction Y, with a clearance between each other in the second direction Y. The second land portions308bof the wiring307A to307C are spaced in the first direction X from the end portion of the island portion301on the side of the second edge34. The second land portions308bof the wirings307A to307C each have, for example, a rectangular shape in a plan view. In an example, the second land portions308bof the wirings307A and307C have the long sides extending along the first direction X. The second land portion308bof the wiring307B has the long sides extending along the second direction Y.

The second land portion308bof the wiring307A is spaced in the first direction X from a portion of the island portion301on the side of the third edge35in the second direction Y. This second land portion308bis formed on the side of the third edge35in the second direction Y, with respect to the control chip47. The first land portion308aof the wiring307A is formed on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion308bof the wiring307A. The connection wiring308cof the wiring307A includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion308atoward the third edge35. The second portion extends along the first direction X, from the second land portion308btoward the second edge34. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

The second land portion308bof the wiring307B extends from the center of the island portion301in the second direction Y to the end portion on the side of the fourth edge36of the substrate30. On this second land portion308b, the diode49U is mounted via the conductive material MP, The diode49U is located in a region on the side of the fourth edge36, in the second land portion308bof the wiring307B. Here, the position of the diode49U in the second land portion308bof the wiring307B may be modified as desired. The first land portion308aof the wiring307B is formed on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion308bof the wiring307B. The connection wiring308cof the wiring307B includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion308atoward the first edge33. The second portion extends along the first direction X, from the second land portion308btoward the second edge34. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

The second land portion308bof the wiring307C is formed in a region on the side of the fourth edge36of the substrate30, with respect to the island portion301. The second land portion308bof the wiring307C is formed adjacent to the island portion301, both in the first direction X and in the second direction Y. The first land portion308aof the wiring307C is formed on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion308bof the wiring307C. The connection wiring308cof the wiring307C includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion308atoward the third edge35. The second portion extends along the first direction X, from the second land portion308btoward the second edge34. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

The respective second land portions308bof the wirings307D to307F are aligned in the first direction X, with a clearance between each other in the first direction X. The second land portions308bof the wirings307D to307F are each spaced apart from the end portion of the island portion301on the side of the fourth edge36, in the second direction Y. The second land portions308bof the wirings307D to307F each have, for example, a rectangular shape in a plan view. In an example, the second land portions308bof the wirings307D and307F have the long sides extending along the first direction X. In an example, the second land portion308bof the wiring307E has the long sides extending along the second direction Y.

The second land portion308bof the wiring307D is formed adjacent to the end portion of the island portion301on the side of the second edge34, in the second direction Y. On this second land portion308b, the diode49V is mounted via the conductive material MP. The diode49V is located in a region on the side of the first edge33, in the second land portion308bof the wiring307D. Here, the position of the diode49V in the second land portion308bof the wiring307D may be modified as desired. The first land portion308aof the wiring307D is formed on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion308bof the wiring307D. This first land portion308ais formed so as to overlap with the respective first land portions308aof the wirings307A and307B, as viewed in the second direction Y. The connection wiring308cof the wiring307D is formed in a similar shape to that of the connection wiring308cof the wiring307C. The second portion of the connection wiring308cof the wiring307D is longer than the second portion of the connection wiring308cof the wiring307C, and the third portion of the connection wiring308cof the wiring307D is shorter than the third portion of the connection wiring308cof the wiring307C.

The second land portion308bof the wiring307E is formed between the second land portion308bof the wiring307D and the second land portion308bof the wiring307F, in the first direction X. The first land portion308aof the wiring307E is formed on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion308bof the wiring307E. This first land portion308ais formed on the side of the second edge34of the substrate30, with respect to the second land portions308bof the wirings307A to307C. The connection wiring308cof the wiring307C includes a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion308atoward the third edge35. The second portion extends along the second direction Y, from the second land portion308btoward the fourth edge36. The third portion extends along the first direction X. The third portion is located between the first portion and the second portion, both in the first direction X and in the second direction Y. The fourth portion is connecting the first portion and an end of the third portion. The fifth portion is connecting the second portion and the other end of the third portion. The fourth portion and the fifth portion each extend obliquely, so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

On the second land portion308bof the wiring307F, the diode49W is mounted via the conductive material MP. The diode49W is located in a region on the side of the first edge33, in the second land portion308bof the wiring307F. Here, the position of the diode49W in the second land portion308bof the wiring307F may be modified as desired. The first land portion308aof the wiring307F is formed on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion308bof the wiring307F. The first land portion308aof the wiring307F is formed so as to overlap with the respective second land portions308bof the wirings307A to307C, as viewed in the second direction Y. The connection wiring308cof the wiring307F is formed in a similar shape to that of the connection wiring308cof the wiring307E. The respective lengths of the first to fifth portions of the connection wiring308cof the wiring307F are different from those of the corresponding portions of the connection wiring308cof the wiring307E.

The wiring307G is a first power source pattern that supplies the source voltage VCC to each of the control chip47and the intermediary chip310. The wiring307H is a first ground pattern connected to the island portion301, on which the control chip47and the intermediary chip310are mounted. The first land portion308aof the wiring307G is formed so as to overlap with the second land portion308bof the wiring307F, as viewed in the second direction Y. The first land portion308aof the wiring307H is formed so as to overlap with the end portion of the control chip47on the side of the first edge33, as viewed in the second direction Y.

The wirings307G and307H each include a branch wiring308d, branched from the connection wiring308c(seeFIG. 91). The branch wiring308dincludes a land portion308e. The respective connection wirings308cof the wirings307G and307H are thicker than that of the wiring307A to307F. The connection wirings308cof the wirings307G and307H have similar shapes to each other, except for the following difference. The connection wiring308cof the wiring307H is connected to the island portion301. In contrast, the connection wiring308cof the wiring307H is not connected to the island portion301. The connection wirings308cof the wirings307G and307H each include a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the first direction, from the first land portion308atoward the third edge35. The second portion extends obliquely from the first portion, so as to be closer to the third edge35, toward the first edge33of the substrate30. The third portion extends along the second direction Y, from the end portion of the second portion on the side of the first edge33and on the side of the third edge35, toward the island portion301.

Since the wiring307H is connected to the island portion301, the lead frame28U and the lead frame28H are electrically connected, via the wiring307H, the island portion301, the connection wiring305, the island portion302, and the wiring307U. Therefore, the lead frame28A and the lead frame28H are electrically connected to each other, via the wiring pattern300on the substrate30. Thus, the wiring pattern300includes the ground pattern on which the control chip47and the control chip48are mounted.

The respective branch wirings308dof the wirings307G and307H are aligned in the second direction Y, with a clearance therebetween in the second direction Y. The branch wiring308dof the wiring307H is formed between the island portion301and the branch wiring308dof the wiring307G, in the second direction Y. The branch wiring308dof the wiring307G extends along the first direction X, from the connection wiring308cof the wiring307G toward the first edge33. The land portion308eof this branch wiring308dis formed at the distal end portion of the branch wiring308d. This land portion308eextends along the second direction Y, from the distal end portion of the branch wiring308dtoward the island portion301. The branch wiring308dof the wiring307H extends along the first direction X, from the connection wiring308cof the wiring307H toward the second edge34. The land portion308eof this branch wiring308dis formed at the distal end portion of the branch wiring308d. This land portion308eextends along the second direction Y, from the distal end portion of the branch wiring308dtoward the fourth edge36. These land portions308eeach have, for example, a rectangular shape in a plan view. In an example, these land portions308eeach have the long sides extending along the second direction Y.

As shown inFIG. 91, the control chip47is electrically connected to the semiconductor chips41X to43X, the diodes49U to49W, the intermediary chip310, and the wirings307A to307G, via wires311A to311O, exemplifying the first connection material. The intermediary chip310is electrically connected to the wirings307G and307H, via wires311P and311Q. The wires311O to311Q are connected to the face of the intermediary chip310opposite in the third direction Z to the face via which the intermediary chip310is mounted on the island portion301. The wires311A to311Q are, for example, formed of gold (Au). The respective wire diameters of the wires311A to311Q connected to the control chip47are equal to each other, and finer than the wire diameter of the wires24A to24F. Here, the wire diameters of the wires311A to311Q, expressed as “equal to each other”, may differ by within ±5% from the wire diameter of each other.

The second electrodes GP of the semiconductor chips41X to43X are connected to the control chip47, via the wires311A to311C, respectively. The first electrodes SP of the semiconductor chips41X to43X are connected to the control chip47, via another line of the wires311A to311C, respectively. The diodes49U to49W have the first electrode (e.g., anode) connected to the control chip47, via the wires311D to311F, respectively. The second electrode (e.g., cathode) of the diode49U is electrically connected to the lead frame28B, via the wiring307B. The second electrode (e.g., cathode) of the diode49V is electrically connected to the lead frame28D, via the wiring307D. The second electrode (e.g., cathode) of the diode49W is electrically connected to the lead frame28F, via the wiring307F.

The control chip47is also electrically connected to the second land portion308bof the wiring3073, via two wires311G. The control chip47is also electrically connected to the second land portion307bof the wiring307D, via two wires311H. Further, the control chip47is electrically connected to the second land portion307bof the wiring307F, via two wires311I. Respective first end portions of the two wires311G are connected to a position on the second land portion308bof the wiring307B, on the side of the third edge35with respect to the diode49U. Respective second end portions of the two wires311G are connected to the end portion of the control chip47on the side of the second edge34, in the first direction X. The second end portions of the two wires311G are each connected to a position on the control chip47on the side of the third edge35in the second direction Y, with respect to the center of the control chip47in the second direction Y. Respective first end portions of the two wires311H are connected to a position on the second land portion308bof the wiring307D, on the side of the second edge34. Respective second end portions of the two wires311H are connected to the end portion of the control chip47on the side of the second edge34, in the first direction X. The second end portions of the two wires311H are connected to the end portion of the control chip47on the side of the fourth edge36. Respective first end portions of the two wires311I are connected to a position on the second land portion308bof the wiring307F, on the side of the second edge34. Respective second end portions of the two wires311I are connected to the end portion of the control chip47on the side of the fourth edge36, in the second direction Y. The second end portions of the two wires311I are each connected to a position on the control chip47on the side of the first edge33in the first direction X, with respect to the center of the control chip47in the first direction X. The second end portions of the two wires311I are each connected to a position on the control chip47between the second end portion of the wire311L and the second end portion of the wire311F, in the first direction X.

A first end portion of the single-line wire311J, connecting the wiring307A and the control chip47, is connected to the end portion of the second land portion308bof the wiring307A on the side of the first edge33. A second end portion of the wire311J is connected to the end portion of the control chip47on the side of the second edge34, in the first direction X. The second end portion of the wire311J is connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y. The second end portion of the wire311J is connected to a position on the control chip47on the side of the third edge35in the second direction Y, with respect to the second end portion of the wire311G.

A first end portion of the single-line wire311K, connecting the wiring307C and the control chip47, is connected to the end portion of the second land portion308bof the wiring307C on the side of the first edge33. A second end portion of the wire311K is connected to the end portion of the control chip47on the side of the second edge34, in the first direction X. The second end portion of the wire311K is connected to the end portion of the control chip47on the side of the fourth edge36, in the second direction Y. The second end portion of the wire311K is connected to a position on the control chip47on the side of the fourth edge36in the second direction Y, with respect to the second end portion of the wire311D.

A first end portion of the single-line wire311L, connecting the wiring307E and the control chip47, is connected to the end portion of the second land portion308bof the wiring307C on the side of the third edge35. A second end portion of the wire311L is connected to the end portion of the control chip47on the side of the fourth edge36, in the second direction Y. The second end portion of the wire311L is connected to the center of the control chip47in the first direction X. The second end portion of the wire311L is connected to a position on the control chip47between the second end portion of the wire311E and the second end portion of the wire311I, in the second end portion.

Respective first end portions of two wires311M, connecting the wiring307H and the control chip47, are connected to the distal end portion of the connection wiring308cof the wiring307H. Respective second end portions of the two wires311M are connected to the end portion of the control chip47, on the side of the fourth edge36in the second direction Y. The second end portions of the two wires311M are connected to the end portion of the control chip47, on the side of the first edge33in the first direction X. The second end portions of the two wires311M are each connected to a position on the control chip47on the side of the first edge33in the first direction X, with respect to the second end portion of the wire311N.

Respective first end portions of two wires311N, connecting the wiring307G and the control chip47, are connected to the land portion308eof the connection wiring308cof the wiring307G. Respective second end portions of the two wires311N are connected to the end portion of the control chip47, on the side of the fourth edge36of the substrate30in the second direction Y. The second end portions of the two wires311N are each connected to a position on the control chip47on the side of the second edge34in the first direction X, with respect to the wire311M. The second end portions of the two wires311N are each connected to a position on the control chip47on the side of the first edge33in the first direction X, with respect to the second end portion of the wire311F.

The control chip47and the intermediary chip310are connected via three wires311O. Respective first end portions of the three wires311O are connected to the end portion of the intermediary chip310on the side of the second edge34. Respective second end portions of the three wires311O are connected to the end portion of the control chip47on the side of the first edge33. The three wires311O are aligned in the second direction Y, with a clearance between each other. In this embodiment, the three wires311O are parallel to each other, in a plan view.

Respective first end portions of two wires311P, connecting the intermediary chip310and the wiring307G, are connected to the land portion308eof the wiring307G. Respective second end portions of the two wires311P are connected to the end portion of the intermediary chip310, on the side of the second edge34in the first direction X. The second end portions of the two wires311P are connected to the end portion of the intermediary chip310, on the side of the fourth edge36. Accordingly, the intermediary chip310can receive the source voltage VCC, through the wiring307G.

Respective first end portions of two wires311Q, connecting the intermediary chip310and the wiring307H, are connected to the end portion of the connection wiring308cof the wiring307H, on the side of the island portion301. Respective second end portions of the two wires311Q are connected to the end portion of the intermediary chip310, on the side of the fourth edge36in the second direction Y. The second end portions of the two wires311Q are connected to the center of the intermediary chip310in the first direction X, or a position on the side of the second edge34, with respect to the center of the intermediary chip310in the first direction X.

The island portion303is formed in a region on the side of the first edge33of the substrate30, with respect to the island portion301. The island portion303is formed adjacent to the island portion301, with a clearance therefrom in the first direction X. The island portion303is formed on the side of the first edge33with respect to the lead frame28H, in other words with respect to the wiring307H (seeFIG. 90). The island portion303has, for example, a rectangular shape in a plan view. In an example, the island portion303has the long sides extending along the second direction Y. The edge of the island portion303on the side of the third edge35is located on the side of the fourth edge36, with respect to the edge of the island portion301on the side of the third edge35. The island portion303protrudes toward the fourth edge36, with respect to the island portion301.

On the island portion303, the primary-side circuit chip160Y and the transformer chip190Y are mounted, via the conductive material MP. The primary-side circuit chip160Y and the transformer chip190Y are aligned in the first direction X, with a clearance therebetween. The primary-side circuit chip160Y and the transformer chip190Y each have, for example, a rectangular shape in a plan view. In an example, the primary-side circuit chip160Y and the transformer chip190Y each have the long sides extending along the second direction Y. In this embodiment, the primary-side circuit chip160Y is smaller in size in the first direction X and the second direction Y, than the transformer chip190Y. The transformer chip190Y is larger in size in the second direction Y, than the intermediary chip310. In addition, as shown inFIG. 90, the intermediary chip310, the primary-side circuit chip160Y, and the transformer chip190Y are located such that the respective centers in the second direction Y coincide with each other.

The primary-side circuit chip160Y is electrically connected to the lead frames28I to28L, via the wirings307I to307L respectively. The lead frames28I to28L are located on the side of the first edge33of the substrate30, with respect to the island portion303. In an example, the wiring307I is the first signal pattern that transmits the control signal for the semiconductor chip41X to the primary-side circuit chip160Y. The wiring307J is the first signal pattern that transmits the control signal for the semiconductor chip42X to the primary-side circuit chip160Y. The wiring307K is the first signal pattern that transmits the control signal for the semiconductor chip43X to the primary-side circuit chip160Y. The wiring307L is the power source pattern that supplies the source voltage VCC to the primary-side circuit chip160Y.

The respective second land portions308bof the wirings307I to307L are aligned along the second direction Y, with a clearance between each other in the second direction Y. These second land portions308bare aligned in the order of second land portion308bof the wiring307I, that of the wiring307J, that of the wiring307K, and that of the wiring307L, from the side of the fourth edge36of the substrate30. These second land portions308bare formed in a region on the side of the second edge34of the substrate30, with respect to the first land portion308aof the wiring307I.

The connection wiring308cof the wiring307I includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion308atoward the third edge35. The second portion extends along the first direction X, from the second land portion308btoward the first edge33. The third portion is connecting the first portion and the second portion. The third portion extends obliquely so as to be closer to the fourth edge36, toward the first edge33of the substrate30. The respective connection wirings308cof the wirings307J to307L each have a similar shape to that of the connection wiring308cof the wiring307I. The second portion and the third portion of the connection wiring308cbecome longer, in the order of wiring307J, wiring307K, and wiring307L.

As shown inFIG. 91, the primary-side circuit chip160Y and the wirings307I to307L are connected via wires313A to313D, exemplifying the first connection material. The wires313A to313D are connected to the face of the primary-side circuit chip160Y opposite in the third direction Z to the face via which the primary-side circuit chip160Y is mounted on the island portion303. The single-line wire313A is connecting the primary-side circuit chip160Y and the second land portion308bof the wiring307I. The wire313A is connected to the end portion of the primary-side circuit chip160Y, on the side of the first edge33in the first direction X. The wire313A is connected to the end portion of the primary-side circuit chip160Y, on the side of the fourth edge36in the second direction Y. The single-line wire313B is connecting the primary-side circuit chip160Y and the second land portion308bof the wiring307J. The wire313B is connected to the end portion of the primary-side circuit chip160Y, on the side of the first edge33in the first direction X. The wire313B is connected to a position on the primary-side circuit chip160Y on the side of the third edge35, with respect to the wire313A. The single-line wire313C is connecting the primary-side circuit chip160Y and the second land portion308bof the wiring307K. The wire313C is connected to the end portion of the primary-side circuit chip160Y, on the side of the first edge33in the first direction X. The wire313C is connected to the center of the primary-side circuit chip160Y in the first direction X, or a position on the side of the third edge35, with respect to the center of the primary-side circuit chip160Y in the first direction X. Two wires313D are connecting the primary-side circuit chip160Y and the second land portion308bof the wiring307L. The wires313D are connected to the end portion of the primary-side circuit chip160Y, on the side of the first edge33of the substrate30in the first direction X. The wires313D are connected to the end portion of the primary-side circuit chip160Y, on the side of the third edge35in the second direction Y. The wires313D are each connected to a position on the primary-side circuit chip160Y, on the side of the third edge35in the second direction Y with respect to the wire313C.

The primary-side circuit chip160Y and the transformer chip190Y are connected via plurality of wires315, exemplifying the third connection material. The transformer chip190Y and the intermediary chip310are connected via plurality of wires316, exemplifying the fourth connection material. The plurality of wires315are connected to the respective faces of the primary-side circuit chip160Y and the transformer chip190Y, opposite in the third direction Z to the faces via which the primary-side circuit chip160Y and the transformer chip190Y are mounted on the island portion303. Respective first end portions of the plurality of wires316are connected to the face of the transformer chip190Y, opposite in the third direction Z to the face via which the transformer chip190Y is mounted on the island portion303. Respective second end portions of the plurality of wires316are connected to the face of the intermediary chip310, opposite in the third direction Z to the face via which the intermediary chip310is mounted on the island portion301.

The wirings307S to307U and the island portion304are formed around the island portion302. The wirings307S to307U are formed on the side of the first edge33of the substrate30, with respect to the island portion302. The island portion304is formed on the side of the fourth edge36of the substrate30, with respect to the island portion302. The wirings307S to307U each have a similar shape to that of the wirings205S to205U according to the eighth embodiment. The connection wiring308cof the wiring307U is thicker than the connection wiring308cof the wirings307A to307T. The wiring307S is the signal pattern that supplies the detection voltage CIN to the control chip48. The wiring307T is the power source pattern that supplies the source voltage VCC to the control chip48.

The island portion302and the island portion301are connected via the connection wiring305. Accordingly, the wiring307U, the island portion302, and the island portion301are electrically connected to the lead frame28U constituting the second GND terminal. A first end portion of the connection wiring305is connected to the end portion of the island portion302, on the side of the second edge34in the first direction X. The first end portion of the connection wiring305is connected to the end portion of the island portion302, on the side of the third edge35in the second direction Y. A second end portion of the connection wiring305is connected to the end portion of the island portion301, on the side of the first edge33in the first direction X. The second end portion of the connection wiring305is connected to the end portion of the island portion301, on the side of the third edge35in the second direction Y. The connection wiring305extends along the first direction X. The edge of the connection wiring305on the side of the third edge35of the substrate30in the second direction Y coincides with the respective edges of the island portions301and302on the side of the third edge35of the substrate30, in the second direction Y.

The control chip47is mounted on the island portion302, via the conductive material MP. In this embodiment, the control chip47is located at the central position of the island portion302, in the first direction X and in the second direction Y. Here, the position of the control chip47in the island portion302may be modified as desired.

The island portion304has, for example, a rectangular shape in a plan view. In an example, the island portion304has the long sides extending along the first direction X. The wirings307L to307R are formed in a region on the side of the fourth edge35of the substrate30, with respect to the island portion304. The wiring307M is the second signal pattern that transmits the control signal for the semiconductor chip44X to the primary-side circuit chip160Y. The wiring307N is the second signal pattern that transmits the control signal for the semiconductor chip45X to the primary-side circuit chip160Y. The wiring307O is the second signal pattern that transmits the control signal for the semiconductor chip46X to the primary-side circuit chip160Y. The wiring307P is the signal pattern that transmits the fault detection signal FO from the primary-side circuit chip160Y to the lead frame28P. The wiring307Q is the signal pattern that transmits the temperature detection signal VOT to the primary-side circuit chip160Y. The wiring307R is the ground pattern, on which the primary-side circuit chip160Y and the transformer chip190Y are mounted, together with the island portion304.

The island portion302and the island portion304are formed so as to overlap with the lead frames28M to28Q, as viewed in the second direction Y. In other words, the island portion302and the island portion304are formed so as to overlap with the respective first land portions308aof the wirings307M to307Q, as viewed in the second direction Y. In a region on the side of the fourth edge36of the substrate30with respect to the island portion304, the respective second land portions308bof the wirings307L to307Q are formed. These second land portions308bare aligned along the first direction X, with a clearance between each other in the first direction X. The wiring307L connected to the lead frame28L constituting the third VCC terminal includes a second land portion308xindependent from the second land portion308b, and a connection wiring308yindependent from the connection wiring308c. Thus, the wiring307L supplies the source voltage VCC to each of the primary-side circuit chip160Y and the primary-side circuit chip160Z.

The respective second land portions308bof the wiring307L to307P are formed so as to overlap with the control chip48, the primary-side circuit chip160Z, and the transformer chip190Z, as viewed in the second direction Y. The second land portion308bof the wiring307Q is formed so as to overlap with the control chip48and the transformer chip190Z, as viewed in the second direction Y. In addition, the second land portion308bof the wiring307Q is formed on the side of the first edge33of the substrate30, with respect to the primary-side circuit chip160Z.

The second land portion308xof the wiring307L has a rectangular shape, in a plan view. In an example, the second land portion308xhas the long sides extending along the first direction X. The second land portion308xis formed so as to protrude toward the second edge34in the first direction X, from the primary-side circuit chip160Z. The first land portion308aof the wiring307L is formed on the side of the second edge34of the substrate30in the first direction X, with respect to the second land portion308x. The first land portion308aof the wiring307L is formed on the side of the fourth edge36in the second direction Y, with respect to the second land portion308x. The connection wiring308yincludes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion308atoward the third edge35. The second portion extends along the first direction X, from the second land portion308xtoward the second edge34. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

The first land portion308aof the wiring307M is formed on the side of the second edge34of the substrate30in the first direction X, with respect to the second land portion308bof the wiring307M. The first land portion308aof the wiring307M is formed on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the second land portion308bof the wiring307M. This first land portion308ais formed on the side of the second edge34, and on the side of the fourth edge36of the substrate30, with respect to the second land portion308bof the wiring307L. The connection wiring308cof the wiring307M can be divided into a first portion, a second portion, a third portion, a fourth portion, and a fifth portion. The first portion extends along the second direction Y, from the first land portion308atoward the third edge35. The second portion extends along the second direction Y, from the second land portion308btoward the fourth edge36. The third portion extends along the first direction X. The third portion is located between the first portion and the second portion, both in the first direction X and in the second direction Y. The fourth portion is connecting an end of the third portion and the second portion. The fifth portion is connecting the other end of the third portion and the first portion. The fourth portion and the fifth portion each extend obliquely, so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

The first land portion308aof the wiring307N is formed on the side of the second edge34of the substrate30in the first direction X, with respect to the second land portion308bof the wiring307N. The first land portion308aof the wiring307N is formed on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the second land portion308bof the wiring307N. This first land portion308ais formed so as to overlap with the second land portion308xof the wiring307L, as viewed in the second direction Y. The connection wiring308cof the wiring307N has a similar shape to that of the connection wiring308cof the wiring307M. The first portion of the connection wiring308cof the wiring307N is shorter than the first portion of the connection wiring308cof the wiring307M, and the third portion and the fourth portion of the connection wiring308cof the wiring307N are shorter than the third portion and the fourth portion of the connection wiring308cof the wiring307M.

The first land portion308aof the wiring307O is formed on the side of the second edge34of the substrate30in the first direction X, with respect to the second land portion308bof the wiring307O, The first land portion308aof the wiring307O is formed on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the second land portions308bof the wiring307O. The first land portion308aof the wiring307O is formed so as to overlap with the respective second land portions308bof the wirings307M and307N, as viewed in the second direction Y. The connection wiring308cof the wiring307O includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion308atoward the third edge35. The second portion extends along the second direction Y, from the second land portion308btoward the fourth edge36. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

The first land portion308aof the wiring307P is formed so as to overlap with the second land portion308bof the wiring307P, as viewed in the second direction Y. The connection wiring308cof the wiring307P extends along the second direction Y.

The first land portion308aof the wiring307Q is formed so as to overlap with the second land portion308bof the wiring307Q, as viewed in the second direction Y. The connection wiring308cof the wiring307Q extends along the second direction Y. The second land portion308bof the wiring307Q is formed in a rectangular shape, having the long sides extending along the first direction X.

The wiring307R is connected to the island portion304. The connection wiring308cof the wiring307R includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion308atoward the third edge35. The second portion extends from the island portion304toward the first edge33. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30.

The island portion304and the island portion303are connected via a connection wiring306. The wiring307R, the island portion304, the connection wiring306, and the island portion303are electrically connected to the lead frame28R constituting the third GND terminal.

As shown inFIG. 92, the control chip48is electrically connected to the semiconductor chips44X to46X and the wirings307S to307U, via the wires312A to312F exemplifying the first connection material. The primary-side circuit chip160Z is electrically connected to the wirings307L to307Q, via the wires314A to314F exemplifying the first connection material. The primary-side circuit chip160Z is also electrically connected to the island portion304, via the wire314G. The wires314A to314F are connected to the face of the primary-side circuit chip160Z opposite in the third direction Z to the face via which the primary-side circuit chip160Z is mounted on the island portion304. The primary-side circuit chip160Z and the transformer chip190Z are connected via a plurality of wires317, exemplifying the third connection material. The transformer chip190Z and the control chip48are connected via a plurality of wires318, exemplifying the fourth connection material. The plurality of wires317are connected to the faces of the primary-side circuit chip160Z and the transformer chip190Z, opposite in the third direction Z to the faces via which the primary-side circuit chip160Z and the transformer chip190Z are mounted on the island portion304. Respective first end portions of the plurality of wires318are connected to the face of the transformer chip190Z, opposite in the third direction Z to the face via which the transformer chip190Z is mounted on the island portion304. Respective second end portions of the plurality of wires318are connected to the face of the control chip48, opposite in the third direction Z to the face via which the control chip48is mounted on the island portion302. The wires312A to312F,314A to314G,317, and318are, for example, formed of gold (Au). The respective wire diameters of the wires312A to312F,314A to314G,317, and318are equal to each other, and also equal to the wire diameter of the wires311A to311Q. Here, the wire diameters of the wires312A to312F,314A to314G,317, and318, expressed as “equal to each other”, may differ by within ±5% of the wire diameter. Likewise, the wire diameters of the wires312A to312F,314A to314G,317, and318, expressed as “equal to the wire diameter of the wires311A to311Q”, may differ by within ±5% of the wire diameter.

The gates of the semiconductor chips44X to46X are connected to the control chip48via the wires312A to312C, respectively. The wire312A is connected to the end portion of the control chip48on the side of the second edge34in the first direction X. The wire312A is connected to the end portion of the control chip48on the side of the third edge35in the second direction Y. The wire3123is connected to the end portion of the control chip48on the side of the third edge35in the second direction Y. The wire3123is connected to a position on the control chip48on the side of the second edge34in the first direction X, with respect to the center of the control chip48in the first direction X. The wire312C is connected to the end portion of the control chip48on the side of the first edge33in the first direction X. The wire312C is connected to the end portion of the control chip48on the side of the third edge35in the second direction Y.

A first end portion of the wire312D is connected to the second land portion308bof the wiring307S. A second end portion of the wire312D is connected to the end portion of the control chip48, on the side of the first edge33in the first direction X. The second end portion of the wire312D is connected to a position on the control chip48on the side of the fourth edge36in the second direction Y, with respect to the center of the control chip48in the second direction Y. A first end portion of the wire312E is connected to the second land portion308bof the wiring307T. A second end portion of the wire312E is connected to the end portion of the control chip48, on the side of the first edge33in the first direction X. The second end portion of the wire312E is connected to the center of the control chip48in the second direction Y, or a position on the side of the fourth edge36, with respect to the center of the control chip48in the second direction Y. The second end portion of the wire312E is connected to a position on the control chip48on the side of the third edge35in the second direction Y, with respect to the second end portion of the wire312D. A first end portion of the wire312F is connected to the connection wiring308cof the wiring307U. A second end portion of the wire312F is connected to the end portion of the control chip48, on the side of the first edge33in the first direction X. The second end portion of the wire312E is connected to the end portion of the control chip48, on the side of the third edge35in the second direction Y.

Respective first end portions of two wires314A, out of the wires314A to314F connecting the primary-side circuit chip160Z and the wirings307L to307Q, are connected to the second land portion308xof the wiring307L. Respective second end portions of the two wires314A are connected to the end portion of the primary-side circuit chip160Z, on the side of the fourth edge36in the second direction Y. The second end portions of the two wires314A are connected to the end portion of the primary-side circuit chip160Z, on the side of the second edge in the second direction Y. A first end portion of the single-line wire314B is connected to the second land portion308bof the wiring307M. A second end portion of the wire314B is connected to the end portion of the primary-side circuit chip160Z, on the side of the fourth edge36in the second direction Y. The second end portion of the wire314B is connected to a position on the primary-side circuit chip160Z on the side of the second edge34in the first direction X, with respect to the center of the primary-side circuit chip160Z in the first direction X. A first end portion of the single-line wire314C is connected to the second land portion308bof the wiring307N. A second end portion of the wire314C is connected to the end portion of the primary-side circuit chip160Z, on the side of the fourth edge36in the second direction Y. The second end portion of the wire314C is connected to the center of the primary-side circuit chip160Z in the first direction X. The second end portion of the wire314C is connected to a position on the primary-side circuit chip160Z between the second portion of the wire314B and the second portion of the wire314D, in the first direction X. A first end portion of the single-line wire314D is connected to the second land portion308bof the wiring307O. A second end portion of the wire314D is connected to the end portion of the primary-side circuit chip160Z, on the side of the fourth edge36of the substrate30in the second direction Y. The second end portion of the wire314D is connected to a position on the primary-side circuit chip160Z on the side of the first edge33in the first direction X, with respect to the center of the primary-side circuit chip160Z in the first direction X. A first end portion of the single-line wire314E is connected to the second land portion308bof the wiring307P. A second end portion of the wire314E is connected to the end portion of the primary-side circuit chip160Z, on the side of the fourth edge36of the substrate30in the second direction Y. The second end portion of the wire314E is connected to a position on the primary-side circuit chip160Z on the side of the first edge33in the first direction X, with respect to the second end portion of the wire314D in the first direction X. A first end portion of the single-line wire314F is connected to the second land portion308bof the wiring307Q. A second end portion of the wire314F is connected to the end portion of the primary-side circuit chip160Z, on the side of the fourth edge36in the second direction Y. The second end portion of the wire314F is connected to the end portion of the primary-side circuit chip160Z, on the side of the first edge33in the first direction X.

Respective first end portions of the plurality of wires317are connected to the end portion of the primary-side circuit chip1602, on the side of the third edge35in the second direction Y. The first end portions of the plurality of wires317are connected to the primary-side circuit chip160Z, with a clearance between each other in the first direction X. Respective second end portions of the plurality of wires317are connected to the end portion of the transformer chip190Z, on the side of the fourth edge36in the second direction Y. The second end portions of the plurality of wires317are connected to the transformer chip190Z, with a clearance between each other in the first direction X. The clearances between the second end portions of the plurality of wires317in the first direction X are wider than the clearances between the first end portions of the plurality of wires317in the first direction X.

Respective first end portions of the plurality of wires318are connected to the end portion of the transformer chip190Z, on the side of the third edge35of the substrate30in the second direction Y. The first end portions of the plurality of wires318are spaced apart from each other in the first direction X. Respective second end portions of the plurality of wires318are connected to the end portion of the control chip48, on the side of the fourth edge36in the second direction Y. The second end portions of the plurality of wires318are spaced apart from each other in the first direction X. The clearances between the first end portions of the plurality of wires318in the first direction X are equal to the clearances between the second end portions of the plurality of wires318in the first direction X.

Advantageous Effects

This embodiment provides the following advantageous effects, in addition to those provided by the eighth embodiment.

(4-1) The semiconductor package1includes the primary-side circuit chip160Y and the transformer chip190Y, configured to transmit the control signal for the semiconductor chips41X to43X to the control chip47, and the primary-side circuit chip160Z and the transformer chip190Z, configured to transmit the control signal for the semiconductor chips44X to46X to the control chip48. Therefore, the structure of the control chip48can be simplified, compared with the case where the control signal for the semiconductor chips41X to43X is transmitted to the control chip47through the control chip48. In addition, the lead frames28I to28R are separately distributed to the primary-side circuit chip160Y and the primary-side circuit chip160Z, in other words the concentration of the wirings to one of the primary-side circuit chips can be prevented. Therefore, the wirings between the primary-side circuit chip160Y and the lead frames28I to28K (wiring307I to307K), as well as the wirings between the primary-side circuit chip160Z and the lead frames28L to28R (wiring307L to307R), can be prevented from being congested.

(4-2) The lead frames28A to28H are located close to the second edge34of the substrate30. Especially, the lead frame28H, closest to the lead frame28I among the lead frames28A to28H, is located on the side of the second edge34, with respect to the end portion of the island portion301on the side of the first edge33of the substrate30. Such an arrangement allows the lead frames28I to28K, electrically connected to the primary-side circuit chip160Y, to be located on the side of the second edge34of the substrate30. Thus, the lead frames28I to28K can be brought closer to the primary-side circuit chip160Y. As result, the wirings307I to307K can be shortened. In addition, the size of the substrate30in the first direction X can be reduced, and consequently the size of the semiconductor package1in the first direction X can be reduced.

(4-3) The island portion303and the island portion304are connected via the connection wiring306. Accordingly, the lead frame28R constituting the second GND terminal and the island portion304are connected via the wiring307R, and the island portion304and the island portion303are connected via the connection wiring306. Therefore, the exclusive GND terminal connected to the island portion303can be excluded. Consequently, an increase in number of terminals of the semiconductor package1can be suppressed.

Eleventh Embodiment

Referring toFIG. 93andFIG. 94, a semiconductor package1according to an eleventh embodiment will be described. The semiconductor package1according to this embodiment is different from the semiconductor package1according to the eighth embodiment, mainly in the arrangement of the lead frames28A to28T. The difference in arrangement of the lead frames28A to28T leads to differences in shape of the wirings205A to205T corresponding to the lead frames28A to28T. In the description given hereunder, similar elements to those of the eighth embodiment will be given the same numeral, and a part or the whole of the description thereof may be omitted. InFIG. 93, the wires24A to24F are omitted, for the sake of clarity.

The semiconductor package1according to this embodiment includes the lead frames28A to28T. In this embodiment, the terminal arrangement of the lead frames28A to28T is as follows. The lead frames28A to28J are secondary-side lead frames each constituting the terminal of the secondary-side circuit170(secondary-side circuit670shown inFIG. 49) of the semiconductor package1. The lead frames28K to28T are primary-side lead frames each constituting the terminal of the primary-side circuit160(primary-side circuit660shown inFIG. 49) of the semiconductor package1. In an example, the lead frame28A constitutes the first GND terminal. The lead frame28B constitutes the first VCC terminal. The lead frame28C constitutes the VSU terminal. The lead frame28D constitutes the VBU terminal. The lead frame28E constitutes the VSV terminal. The lead frame28F constitutes the VBV terminal. The lead frame28G constitutes the VSW terminal. The lead frame28H constitutes the VBW terminal. The lead frame28I constitutes the first VCC terminal. The lead frame28J constitutes the CIN terminal (detection terminal CIN).

The lead frame28K constitutes the HINU terminal. The lead frame28L constitutes the HINV terminal. The lead frame28M constitutes the HINW terminal. The lead frame28N constitutes the LINU terminal. The lead frame28O constitutes the LINV terminal. The lead frame28P constitutes the LINW terminal. The lead frame28Q constitutes the FO terminal. The lead frame28R constitutes the VOT terminal. The lead frame28S constitutes the third VCC terminal. The lead frame28T constitutes the third GND terminal. Thus, the lead frames28A to28T according to this embodiment are set up by excluding the frame constituting the second GND terminal, from the lead frames28A to28U according to the eighth embodiment.

The lead frames28A to28J are located in the region on the side of the second edge34of the substrate30in the first direction X, with respect to the lead frames28K to28T. The lead frames28C to28J are aligned in the first direction X with a clearance between each other. More specifically, the lead frames28C to28J are aligned in the order of lead frame28C, lead frame28D, lead frame28E, lead frame28F, lead frame28G, lead frame28H, lead frame28I, and lead frame28J, from the side of the second edge34, toward the first edge33of the substrate30. The lead frame28C is located at the end portion of the substrate30, on the side of the second edge34in the first direction X. Between the lead frame28B and the lead frame28C, a recess18hof the first resin10is provided. Between the lead frame28O and the lead frame28E, a recess18iof the first resin10is provided. Between the lead frame28F and the lead frame28G, a recess18jof the first resin10is provided. Between the lead frame28H and the lead frame28I, a recess18kof the first resin10is provided. The recesses18h,18i,18j, and18khave the same shape as each other. The lead frame28B and the lead frame28C, the lead frame28O and the lead frame28E, the lead frame28F and the lead frame28G, and the lead frame28H and the lead frame28I, are spaced apart from each other by a first gap G1.

The respective bonding portions28aof the lead frames28A and28B are located on the side of the third edge35in the second direction Y, with respect to the respective bonding portions28aof the lead frames28C to28J. The bonding portions28aof the lead frames28A and28B are spaced apart from each other in the second direction Y. The bonding portion28aof the lead frame28B is located on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the bonding portion28aof the lead frame28A. The bonding portions28aof the lead frames28A and28B are formed so as to overlap with the lead frame28C, as viewed in the second direction Y. The lead frames28A and28B each have an L-shape, in a plan view.

The respective bonding portions28aof the lead frames28A to28I are located so as to overlap with the island portion21aof the lead frame20A, as viewed in the second direction Y. The bonding portions28aof the lead frames28A to28C are located on the side of the second edge34of the substrate30in the first direction X, with respect to the semiconductor chip41X. The lead frame28D is located so as to overlap with the semiconductor chip41X, as viewed in the second direction Y. The lead frames28A to28D are located on the side of the second edge34of the substrate30in the first direction X, with respect to the control chip47and the diodes49U to49W.

The bonding portion28aof the lead frame28E is located on the side of the first edge33of the substrate30in the first direction X, with respect to the diode49U. The bonding portion28aof the lead frame28E is located at a position corresponding to the region between the semiconductor chip41X and the semiconductor chip42X, in the first direction X. The bonding portion28aof the lead frame28E is located so as to overlap with the control chip47, as viewed in the second direction Y. The bonding portion28aof the lead frame28F is located so as to overlap with the diode49V, the control chip47, and the semiconductor chip42X, as viewed in the second direction Y. The bonding portion28aof the lead frame28G is located so as to overlap with the diode49W and the end portion of the control chip47on the side of the first edge33of the substrate, as viewed in the second direction Y. The bonding portion28aof the lead frame28G is located at a position corresponding to the region between the semiconductor chip42X and the semiconductor chip43X, in the first direction X. The bonding portion28aof the lead frame28H is located on the side of the first edge33of the substrate30in the first direction X, with respect to the diode49W and the control chip47. The bonding portion28aof the lead frame28H is located so as to overlap with the semiconductor chip43X, as viewed in the second direction Y.

The bonding portion28aof the lead frame28I is located so as to overlap with the end portion of the island portion21aof the lead frame20A on the side of the first edge33, as viewed in the second direction Y. The bonding portion28aof the lead frame28J is located on the side of the first edge33of the substrate30, with respect to the island portion21a. The bonding portion28aof the lead frame28J is located so as to overlap with the island portion22aof the lead frame20B, as viewed in the second direction Y.

The respective bonding portions28aof the lead frames28K to28R are located on the side of the first edge33of the substrate30, compared with the respective bonding portions28aof the lead frames28K to28R according to the eighth embodiment. The bonding portions28aof the lead frames28K to28R are located on the side of the first edge33of the substrate30in the first direction X, with respect to the island portion22aof the lead frame20B. The bonding portions28aof the lead frames28K to28R are spaced apart from each other in the first direction X. More specifically, the lead frames28K to28R are aligned in the order of lead frame28K, lead frame28L, lead frame28M, lead frame28N, lead frame28O, lead frame28P, lead frame28Q, and lead frame28R, from the side of the second edge34, toward the first edge33of the substrate30.

The respective bonding portions28aof the lead frames28K to28M are located so as to overlap with the island portion22aof the lead frame20C, as viewed in the second direction Y. The respective bonding portions28aof the lead frames28K and28L are located so as to overlap with the primary-side circuit chip160X, the transformer chip190X, the control chip48, and the semiconductor chip45X, as viewed in the second direction Y. The bonding portion28aof the lead frame28M is located on the side of the first edge33of the substrate30in the first direction X, with respect to the semiconductor chip45X. The bonding portion28aof the lead frame28M is located so as to overlap with the primary-side circuit chip160X, the transformer chip190X, and the control chip48, as viewed in the second direction Y.

The respective bonding portions28aof the lead frames28N to28T are located on the side of the first edge33of the substrate30in the first direction X, with respect to the primary-side circuit chip160X, the transformer chip190X, and the control chip48.

The respective bonding portions28aof the lead frames28N to28Q are located so as to overlap with the island portion22aof the lead frame20D, as viewed in the second direction Y. The bonding portion28aof the lead frame28N is located on the side of the second edge34of the substrate30in the first direction X, with respect to the semiconductor chip46X. The bonding portions28aof the lead frames28O,28P are each located so as to overlap with the semiconductor chip46X, as viewed in the second direction Y. The bonding portion28aof the lead frame28Q is located on the side of the first edge33of the substrate30in the first direction X, with respect to the semiconductor chip46X.

The respective bonding portions28aof the lead frames28R to28T are located so as to overlap with the lead frame28R, as viewed in the second direction Y. The lead frames28R to28T each have an L-shape, in a plan view. The bonding portion28aof the lead frame28R is located on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the primary-side circuit chip160X. The bonding portion28aof the lead frame28S is located so as to overlap with the primary-side circuit chip160X and the transformer chip190X, as viewed in the first direction X. The bonding portion28aof the lead frame28T is located on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the control chip48. The bonding portion28aof the lead frame28T is located so as to overlap with the transformer chip190X, as viewed in the first direction X.

A distance DQ1between the lead frames28A to28J and the lead frames28K to28T in the first direction X, in other words the distance between the lead frame28J and the lead frame28K in the first direction X, is longer than the first gap01. The distance DQ1serves for insulation between the terminals constituting the primary-side circuit160and the terminals constituting the secondary-side circuit170.

The wiring pattern200formed in the first region303of the substrate30is without the wiring205U, but further includes wirings205V and205W, compared with the wiring pattern200according to the eighth embodiment. In this embodiment, the respective first land portions206aof the wirings205A to205T,205V, and205W have, for example, a rectangular shape in a plan view. In an example, the first land portions206aof the wirings205A to205T,205V, and205W have the long sides extending along the second direction Y.

The island portion201and the wirings205A to205H each have a similar shape to that of the island portion201and the wirings205A to205H according to the eighth embodiment. The island portion202is formed on the side of the fourth edge36of the substrate30in the second direction Y, compared with the island portion202according to the eighth embodiment. More specifically, the edge of the island portion202on the side of the third edge35is located on the side of the fourth edge36in the second direction Y, with respect to the edge of the island portion201on the side of the third edge35.

The connection wiring204is connecting the end portion of the island portion201on the side of the first edge33, and the end portion of the island portion202on the side of the second edge34, in the first direction X. The connection wiring204is also connecting the end portion of the island portion201on the side of the fourth edge36, and the end portion of the island portion202on the side of the third edge35, in the second direction Y. The connection wiring204includes a first portion204a, a second portion204b, and a third portion204c, each of which will be described hereunder. The first portion204aextends along the first direction X from the island portion201. The second portion204bextends along the first direction X from the island portion202. The second portion204bis located on the side of the third edge35of the substrate30in the second direction Y, with respect to the first portion204a. The third portion204cis connecting the first portion204aand the second portion204b. The third portion204cextends obliquely, so as to be closer to the fourth edge36, toward the second edge34of the substrate30.

The wiring205V is connected to the lead frame28I. The wiring205W is connected to the lead frame28J. The wiring205V is the power source pattern that supplies, for example, the source voltage VCC to the control chip48. The wiring205W is the signal pattern that supplies, for example, the detection voltage CIN to the control chip48.

The respective second land portions206bof the wirings205V and205W are spaced in the first direction X from the end portion of the island portion202on the side of the second edge34. These second land portions206bare aligned in the second direction Y, with a clearance therebetween. The second land portion206bof the wiring205V is formed between the second land portion206bof the wiring205W and the second portion204bof the connection wiring204, in the second direction Y. The respective connection wirings206cof the wirings205V and205W have the same shape as each other. These connection wirings206ceach include a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the third edge35. The second portion extends along the first direction X, from the second land portion206btoward the second edge34. The third portion is connecting the first portion and the second portion. The third portion is parallel to the third portion204cof the connection wiring204. The connection wiring206cof the wiring205V is thicker than the connection wiring206cof the wiring205W.

The second land portion206bof the wiring205W and the control chip48are connected via the wire209J. The second land portion206bof the wiring205V and the control chip48are connected via two wires209K. The wire diameter of the wire209J and that of the wire209J are equal to each other. The wire diameter of the wires209J and209K is equal to that of the wires connected to the control chip48, for example the wire209A. In addition, the wires209J and209K are formed of the same material as the wires connected to the control chip48, for example the wire209A. The wire209J is connected to the end portion of the control chip48on the side of the second edge34, in the first direction X. The wire209J is connected to a position on the control chip48on the side of the fourth edge36in the second direction Y, with respect to the center of the control chip48in the second direction Y. The wire209K is connected to the end portion of the control chip48on the side of the second edge34, in the first direction X. The wire209K is connected to the center of the control chip48in the second direction Y. Here, the wire diameters of the wires209J and209K, expressed as “equal to each other”, may differ by within ±5% from the wire diameter of each other. Likewise, the wire diameters of the wires209J and209K, expressed as “equal to that of the wires connected to the control chip48, for example the wire209A”, may differ by within ±5% from the wire diameter of the wires209J and209K.

The intermediary wirings207A to207C are each formed so as to circumvent the island portion202, in other words circumvent the control chip48. More specifically, the respective second land portion207bof the intermediary wirings207A to207C are located on the side of the first edge33of the substrate30in the first direction X, with respect to the island portion202. The respective connection wirings207cof the intermediary wirings207A to207C extend so as to surround the island portion202from the side of the first edge33and the side of the third edge35. These connection wirings207cextend so as to surround the connection wiring204from the side of the third edge35. The connection wirings207cof the intermediary wirings207A to207C each include a first portion, a second portion, a third portion, and a fourth portion, each of which will be described hereunder. The first portion extends from the first land portion207a, in parallel to the first portion204aof the connection wiring204. The second portion extends in parallel to the second portion204b. The third portion is connecting the first portion and the second portion. The third portion extends in parallel to the third portion204c. The second portion of the connection wiring207cof each of the intermediary wirings207A to207C extends toward the first edge33of the substrate30in the first direction X, beyond the island portion202. The fourth portion extends toward the fourth edge36, from the end portion of the second portion on the side of the first edge33. The fourth portion is connected to the second land portion207b. The clearance between the second portions of the connection wirings207cof the intermediary wirings207A to207C, adjacent to each other in the second direction Y, is narrower than the clearance between the first portions of the connection wirings207c, adjacent to each other in the second direction Y

The wirings205K to205T are respectively connected to the lead frames28K to25T. The wirings205K to205T are located around the island portion203. The island portion203only includes the first cutaway portion203a, unlike the island portion203according to the eighth embodiment. The first cutaway portion203ais formed in the end portion of the island portion203, on the side of the first edge33in the first direction X. The first cutaway portion203ais formed in a region between the center of the island portion203in the second direction Y and the edge thereof on the side of the fourth edge36, in the second direction Y. The wiring205K is the first signal pattern that transmits, for example, the control signal for the semiconductor chip41X to the primary-side circuit chip160X. The wiring205L is the first signal pattern that transmits, for example, the control signal for the semiconductor chip42X to the primary-side circuit chip160X. The wiring205M is the first signal pattern that transmits, for example, the control signal for the semiconductor chip43X to the primary-side circuit chip160X. The wiring205N is the second signal pattern that transmits, for example, the control signal for the semiconductor chip44X to the primary-side circuit chip160X. The wiring205O is the second signal pattern that transmits, for example, the control signal for the semiconductor chip45X to the primary-side circuit chip160X. The wiring205P is the second signal pattern that transmits, for example, the control signal for the semiconductor chip46X to the primary-side circuit chip160X. The wiring205Q is the signal pattern that transmits, for example, the detection voltage CIN to the primary-side circuit chip160X. The wiring205R is the signal pattern that transmits, for example, the temperature detection signal VOT to the primary-side circuit chip160X. The wiring205S is the power source pattern that supplies, for example, the source voltage VCC to the primary-side circuit chip160X. The wiring205U is the ground pattern, for example connected to the island portion203, on which the primary-side circuit chip160X and the transformer chip190X are mounted.

The respective second land portions206bof the wirings205K to205Q are located on the side of the fourth edge36of the substrate30, with respect to the island portion203. These second land portions206bare aligned in the first direction X, with a clearance therebetween. The second land portion206bof the wiring205K is formed on the side of the second edge34of the substrate30in the first direction X, with respect to the primary-side circuit chip160X. The second land portion206bof the wiring205K is formed so as to overlap with the transformer chip190X, as viewed in the second direction Y. The respective second land portions206bof the wirings205L to205P are formed so as to overlap with the primary-side circuit chip160X, as viewed in the second direction Y. The second land portion206bof the wiring205Q is formed on the side of the first edge33of the substrate30in the first direction X, with respect to the primary-side circuit chip160X. The second land portion206bof the wiring205Q is formed so as to overlap with the transformer chip190X, as viewed in the second direction Y. The respective second land portions206bof the wirings205R and205S are formed in the first cutaway portion203aof the island portion203. The second land portions206bof the wirings205R and205S are spaced apart from each other in the second direction Y. The second land portion206bof the wiring205R is formed on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the primary-side circuit chip160X. The second land portion206bof the wiring205R is formed so as to protrude toward the fourth edge36, from the island portion203. The second land portion206bof the wiring205S is formed so as to overlap with the primary-side circuit chip160X, as viewed in the first direction X.

The first land portion206aof the wiring205K is formed so as to overlap with the second land portions206bof the wirings205M and205N, as viewed in the second direction Y. The first land portion206aof the wiring205L is located on the side of the first edge33of the substrate30in the first direction X, with respect to the second land portion206bof the wiring205N. The first land portion206aof the wiring205L is formed so as to overlap with the second land portion206bof the wiring205O, as viewed in the second direction Y. The first land portion206aof the wiring205M is formed so as to overlap with the second land portions206bof the wirings205P,205Q, as viewed in the second direction Y. The first land portion206aof the wiring205N is formed so as to overlap with the second land portions206bof the wirings2058and2055, as viewed in the second direction Y. The first land portions206aof the wirings205O to205Q are formed on the side of the first edge33of the substrate30in the first direction X, with respect to the second land portions206bof the wirings205R and205S.

The connection wiring206cof the wiring205K is formed so as to secure a space for forming the respective connection wirings206cof the wirings205K and205M, between the lead frame28K and the island portion203. The connection wiring206cof the wiring205K includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion206atoward the second edge34. The second portion extends along the second direction Y, from the second land portion206btoward the fourth edge36. The third portion is connecting the first portion and the second portion. The connection wiring206cof the wiring205L is, like the connection wiring206cof the wiring205K, also formed so as to secure a space for forming the respective connection wirings206cof the wirings205M and205N. The connection wiring206cof the wiring205L includes a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the third edge35. The second portion extends along the second direction Y. The third portion is connecting the first portion and the second portion. The fourth portion extends along the second direction Y, from the second land portion206btoward the fourth edge36. The fifth portion is connecting the second portion and the fourth portion. The third portion and the fifth portion each extend obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30.

The portion of the connection wiring206cof the wiring205M, on the side of the first edge33of the substrate30with respect to the connection wiring206cof the wiring205L, is located at the same position in the second direction Y, as the portion of the connection wiring206cof the wiring205L extending along the first direction X. The portion of the connection wiring206cof the wiring205M, overlapping with the connection wiring206cof the wiring205L as viewed in the second direction Y, is located on the side of the third edge35of the substrate30, with respect to the second portion of the connection wiring206cof the wiring205L. The clearance in the second direction Y between the portion of the connection wiring206cof the wiring205M overlapping with the connection wiring206cof the wiring205L as viewed in the second direction Y, and the second portion of the connection wiring206cof the wiring205L, is narrower than the clearance in the second direction Y between the second portion of the connection wiring206cof the wiring205L and the first portion of the connection wiring206cof the wiring205K. The mentioned configuration allows the space for routing the respective connection wirings206cof the wirings205N and205O to be secured.

The connection wiring206cof the wiring205N has a similar shape to that of the connection wiring206cof the wiring205M. The clearance in the second direction Y between the portion of the connection wiring206cof the wiring205N overlapping with the connection wiring206cof the wiring205M as viewed in the second direction Y, and the second portion of the connection wiring206cof the wiring205M, is narrower than the clearance in the second direction Y between the second portion of the connection wiring206cof the wiring205L and the first portion of the connection wiring206cof the wiring205K. The mentioned configuration allows the space for routing the respective connection wirings206cof the wirings205O and205P to be secured.

The connection wiring206cof the wiring205O is located on the side of the third edge35of the substrate30, with respect to the connection wiring206cof the wiring205N, in a region of the substrate30overlapping with the first land portion206aof the wiring205M as viewed in the first direction X. The clearance in the second direction Y between the portion of the connection wiring206cof the wiring205O overlapping with the connection wiring206cof the wiring205N as viewed in the second direction Y, and the second portion of the connection wiring206cof the wiring205N, is narrower than the clearance in the second direction Y between the second portion of the connection wiring206cof the wiring205L and the first portion of the connection wiring206cof the wiring205K.

The connection wiring206cof the wiring205P is located on the side of the third edge35of the substrate30, with respect to the connection wiring206cof the wiring205O, in a region of the substrate30overlapping with the first land portion206aof the wiring205M as viewed in the first direction X. The clearance in the second direction Y between the portion of the connection wiring206cof the wiring205P overlapping with the connection wiring206cof the wiring205O as viewed in the second direction Y, and the second portion of the connection wiring206cof the wiring205O, is narrower than the clearance in the second direction Y between the second portion of the connection wiring206cof the wiring205L and the first portion of the connection wiring206cof the wiring205K.

The connection wiring206cof the wiring205Q extends from the second land portion206balong the first direction X, at the position flush with the edge of the second land portion206bof the wiring205Q on the side of the fourth edge36of the substrate30. Among the respective connection wirings206cof the wirings205M to205Q, as shown inFIG. 94, three of the connection wirings206care located so as to overlap with each other, as viewed in the second direction Y.

The connection wiring206cof the wirings205R to205T each extend along the first direction X. The connection wiring206cof the wiring205T is connected to the end portion of the island portion203, on the side of the first edge33in the first direction X. The connection wiring206cof the wiring205T is connected to a position on the island portion203on the side of the third edge35in the second direction Y, with respect to the center of the island portion203in the second direction Y. The connection wiring206cof the wiring205T is thicker than the respective connection wirings206cof the wirings205K to205S.

Here, the wires connected to each of the control chips47and48, the primary-side circuit chip160X, and the transformer chip190X are formed similarly to those of the eighth embodiment, and therefore the description of those wires will not be repeated. In addition, those wires are given the same numerals as those inFIG. 81andFIG. 82, and therefore such numerals are omitted fromFIG. 93andFIG. 94, for the sake of clarity.

Advantageous Effects

This embodiment provides the following advantageous effects, in addition to those provided by the eighth embodiment.

(11-1) The clearance between the second portions of the intermediary wirings207A to207C, adjacent to each other in the second direction Y, is narrower than the clearance between the first portions of the intermediary wirings207A to207C, adjacent to each other in the second direction Y. Such a configuration allows the distance in the second direction Y between the island portion202and the lead frames20B to20D to be shortened. Accordingly, the distance between the semiconductor chips44X to46X and the control chip47can be shortened, and consequently the wires209A to209C, connecting the semiconductor chips44X to46X and the control chip47, can be shortened.

Variation of Eleventh Embodiment

In the eleventh embodiment, the wirings205V and205W may be made to circumvent the control chips47and48, so as to surround the same, as shown inFIG. 95andFIG. 96, instead of utilizing the intermediary wirings207A to207C. In this case, the connection wiring204and the intermediary wirings207A to207C are formed in the same shape as the connection wiring204and the intermediary wirings207A to207C according to the eighth embodiment. InFIG. 95, the wires24A to24F are omitted for the sake of clarity.

As shown inFIG. 95andFIG. 96, the lead frames28A to28J according to this variation constitute the terminals in a different way from the lead frames28A to28J according to the eleventh embodiment. In an example, the lead frame28A constitutes the second VCC terminal. The lead frame28B constitutes the CIN terminal (detection terminal CIN). The lead frame28C constitutes the first GND terminal. The lead frame28D constitutes the first VCC terminal. The lead frame28E constitutes the VSU terminal. The lead frame28F constitutes the VBU terminal. The lead frame28G constitutes the VSV terminal. The lead frame28H constitutes the VBV terminal. The lead frame28I constitutes the VSW terminal. The lead frame28J constitutes the VBW terminal. Thus, in the semiconductor package1according to the variation shown inFIG. 95andFIG. 96, the second CVV terminal and the CIN terminal (detection terminal CIN) are moved to the lead frames28A and28B, which are closest to the second face12in the first resin10, and the remaining terminals, namely the first GND terminal, the first VCC terminal, the VSU terminal, the VBU terminal, the VSV terminal, the VBV terminal, the VSW terminal, and the VBW terminal are shifted to the lead frames subsequent to the lead frame28C, from the setting of the lead frames28A to28J according to the eleventh embodiment.

To the wiring205A, the lead frame28C is connected. To the wiring205B, the lead frame28D is connected. To the wiring205C, the lead frame28E is connected. To the wiring205D, the lead frame28F is connected. To the wiring205E, the lead frame28G is connected. To the wiring205F, the lead frame28H is connected. To the wiring205G, the lead frame28I is connected. To the wiring205H, the lead frame28J is connected.

The wiring205A is formed so as to surround the wirings205B and205C, from the side of the second edge34and the side of the third edge35. The wiring205A is connected to the island portion201. The wiring205B is formed so as to surround the wiring205C, from the side of the second edge34and the side of the third edge35.

The wiring205C is formed so as to surround the wiring205D, from the side of the second edge34and the side of the third edge35. The wiring205C includes a portion located on the side of the second edge34of the substrate30, with respect to the bonding portion28aof the lead frame28E.

The second land portion206bof the wiring205D, on which the diode49U is mounted, is located adjacent to the end portion of the island portion201, on the side of the second edge34in the first direction X. The second land portion206bof the wiring205D is also located adjacent to the end portion of the island portion201, on the side of the fourth edge36in the second direction Y. The diode49U is located close to the end portion of the second land portion206bon the side of the fourth edge36. Here, the position of the diode49U on the second land portion206bof the wiring205D may be modified as desired.

The respective second land portions206bof the wirings205E to205J are located so as to overlap with the island portion201, as viewed in the second direction Y. The second land portions206bof the wirings205E to205J are located on the side of the fourth edge36in the second direction Y, with respect to the island portion201with a clearance therefrom. The respective second land portions206bof the wirings205E to205H are located on the side of the third edge35of the substrate30, with respect to the respective first land portions206aof the wirings205E to205H. The respective second land portions206bof the wirings205E to205G are located on the side of the second edge34of the substrate30, with respect to the respective first land portions206aof the wirings2053to205H. The second land portion206bof the wiring205H is located on the side of the second edge34of the substrate30, with respect to the first land portion206aof the wiring205F.

The connection wirings206cof the wirings205E and205F each include a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the third edge35. The second portion extends along the first direction X. The third portion is connecting the first portion and the second portion. The fourth portion extends along the second direction Y, from the second land portion206btoward the fourth edge36. The fifth portion is connecting the second portion and the fourth portion. The third portion and the fifth portion each extend obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30.

The connection wirings206cof the wirings205G and205H each include a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion206atoward the third edge35. The second portion extends along the first direction X, from the second land portion206btoward the first edge33, The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30.

The wiring205V is connected to the lead frame28A. The wiring205W is connected to the lead frame283. The respective second land portions206bof the wirings205V and205W are formed so as to overlap with the island portion202, as viewed in the first direction X, in a region on the side of the first edge33of the substrate30, with respect to the island portion202. The second land portions206bof the wirings205V and205W are aligned in the second direction Y, with a clearance therebetween. The second land portion206bof the wiring205V is formed on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the second land portion206bof the wiring205W. The second land portion206bof the wiring205W has, for example, a rectangular shape in a plan view. In an example, the second land portion206bof the wiring205W has the long sides extending along the second direction Y.

The respective connection wirings206cof the wirings205V and205W are formed so as to surround the wiring205A, the island portion201, the connection wiring204, and the island portion202. More specifically, the connection wirings206cof the wirings205V and205W are formed on the side of the second edge34of the substrate30in the first direction X, with respect to the connection wiring206cof the wiring205A. The connection wirings206cof the wirings205V and205W are formed on the side of the third edge35of the substrate30in the second direction Y, with respect to the island portion201, the connection wiring204, and the island portion202. The portion of the connection wiring206cof each of the wirings205V and205W connected to the second land portion206bis formed on the side of the first edge33of the substrate30in the first direction X, with respect to the island portion202.

Twelfth Embodiment

Referring toFIG. 97toFIG. 100, a semiconductor package according to a twelfth embodiment will be described. The semiconductor package1according to this embodiment is different from the semiconductor package1according to the eighth embodiment, mainly in the arrangement of the lead frames28A to28J, the primary-side circuit chip160X, the transformer chip190X, and the control chip48. In the description given hereunder, similar elements to those of the eighth embodiment will be given the same numeral, and a part or the whole of the description thereof may be omitted.

The semiconductor package1according to this embodiment includes the lead frames28A to28S. In this embodiment, the terminal arrangement of the lead frames28A to28S is as follows. The lead frames28A to28I each constitute the terminal of the secondary-side circuit170(secondary-side circuit670shown inFIG. 49) of the semiconductor package1. The lead frames28J to28S each constitute the terminal of the primary-side circuit160(primary-side circuit660shown inFIG. 49) of the semiconductor package1. More specifically, the lead frame28A constitutes the VSU terminal. The lead frame28B constitutes the VBU terminal. The lead frame28C constitutes the VSV terminal. The lead frame28D constitutes the VBV terminal. The lead frame28E constitutes the VSW terminal. The lead frame28F constitutes the VBW terminal. The lead frame28G constitutes the first GND terminal. The lead frame28H constitutes the first VCC terminal. The lead frame28I constitutes the CIN terminal (detection terminal CIN).

The lead frame28J constitutes the third GND terminal. The lead frame28K constitutes the third VCC terminal. The lead frame28L constitutes the HINU terminal. lead frame28M constitutes the HINV terminal. The lead frame28N constitutes the HINW terminal. The lead frame28O constitutes the LINU terminal. The lead frame28P constitutes the LINV terminal. The lead frame28Q constitutes the LININ terminal. The lead frame28R constitutes the FO terminal. The lead frame28S constitutes the VOT terminal. Thus, the lead frames28A to28S according to this embodiment are set up by excluding the frame constituting the second VCC terminal from the lead frames28A to28T according to the eleventh embodiment.

The arrangement of the lead frames28A to28I is the same as that of the lead frames28A to28I according to the sixth embodiment (seeFIG. 51). The lead frames28J to28S are located on the side of the first edge33of the substrate30, with respect to the lead frames28A to28I. The lead frames28J to28P are aligned in the first direction X, with a clearance between each other. More specifically, the lead frames28K to28R are aligned in the order of lead frame28J, lead frame28K, lead frame28L, lead frame28M, lead frame28N, lead frame28O, and lead frame28P, from the side of the second edge34of the substrate30toward the first edge33.

The respective bonding portions28aof the lead frames28Q to28S are aligned in the second direction Y with a clearance between each other. The bonding portions28aof the lead frames28Q to28S are located on the side of the third edge35of the substrate30, with respect to the bonding portions28aof the lead frames28J to28S. The bonding portions28aof the lead frames28Q to28S are located so as to overlap with the bonding portion28aof the lead frame28P, as viewed in the second direction Y. The lead frames28Q to28S each have an L-shape in a plan view. The lead frame28R is located on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the primary-side circuit chip160X.

A distance DQ1between the lead frames28A to28I and the lead frames28J to28S in the first direction X, in other words the distance between the lead frame28I and the lead frame28J in the first direction X, is longer than the first gap G1. The distance DQ1serves for insulation between the terminals constituting the primary-side circuit160and the terminals constituting the secondary-side circuit170.

In this embodiment, the positions and orientations of the control chip48, the primary-side circuit160, and the transformer chip190X are different from those of the eighth embodiment. More specifically, the control chip48, the primary-side circuit160, and the transformer chip190X are each located such that the long sides extend along the second direction Y. The control chip48, the primary-side circuit chip160X, and the transformer chip190X are aligned in the first direction X, with a clearance between each other. In other words, the control chip48, the primary-side circuit chip160X, and the transformer chip190X are aligned in the same direction in which the control chip47and the control chip48are aligned. In this embodiment, the control chip48, the primary-side circuit chip160X, and the transformer chip190X are aligned such that the respective centers thereof in the second direction Y coincide with each other.

The control chip48located so as to overlap with the lead frame20C and the semiconductor chip44X, as viewed in the second direction Y. The control chip48is located so as to overlap with a portion of the island portion22aof the lead frame20C on the side of the first edge33in the first direction X, with respect to the center of the island portion22aof the lead frame20C in the first direction X. The control chip48also overlaps with a portion of the semiconductor chip44X on the side of the first edge33, with respect to the center of the semiconductor chip44X in the first direction X, as viewed in the second direction Y. The control chip48is located so as to protrude from the semiconductor chip44X toward the first edge33. The control chip48may be located such that the edge thereof on the side of the second edge34overlaps with the second electrode GP of the semiconductor chip44X, as seen along an imaginary line drawn from the control chip48in the second direction Y inFIG. 97. Alternatively, control chip48may be located such that the edge thereof on the side of the second edge34corresponds to a portion of the semiconductor chip44X on the side of the first edge33of the substrate30, with respect to the second electrode GP.

The transformer chip190X is located on the side of the first edge33of the substrate, with respect to the control chip48. The transformer chip190X is located on the side of the first edge33of the substrate, with respect to the island portion22aof the lead frame20B. In addition, the transformer chip190X is located so as to overlap with the end portion of the island portion22aof the lead frame20C on the side of the second edge34, as viewed in the second direction Y. In this embodiment, the edge of the transformer chip190X on the side of the second edge34corresponds to a region on the side of the second edge34of the substrate30in the first direction X, with the edge of the island portion22aof the lead frame20C on the side of the second edge34.

The primary-side circuit chip160X is located on the side of the first edge33of the substrate, with respect to the transformer chip190X. The primary-side circuit chip160X is located so as to overlap with the lead frame20C and the semiconductor chip45X, as viewed in the second direction Y. More specifically, the primary-side circuit chip160X is located so as to overlap with the end portion of the semiconductor chip45X on the side of the second edge34, as viewed in the second direction Y.

The control chip48and the transformer chip190X are located between the lead frame28I and the lead frame28J, in the first direction X. More specifically, The control chip48is located such that the center thereof in the first direction X is located on the side of the first edge33, with respect to the center of the region between the lead frame28I and the lead frame28J in the first direction X. The transformer chip190X is located closer to the lead frame28J than to the lead frame28I, in the first direction X.

The primary-side circuit chip160X is located so as to overlap with the lead frames28J and28K, as viewed in the second direction Y. In this embodiment, the center of the primary-side circuit chip160X in the first direction X is located between the center of the bonding portion28aof the lead frame28J in the first direction X, and the center of the bonding portion28aof the lead frame28K in the first direction X.

In this embodiment, further, the control chip47and the diodes49U to49W are located on the side of the first edge33of the substrate30, compared with the control chip47and the diodes49U to49W according to the eleventh embodiment.

More specifically, the control chip47is located on the side of the first edge33of the substrate30, with respect to the semiconductor chip41X. The control chip47is located so as to overlap with the semiconductor chips42X and43X, as viewed in the second direction Y. In further detail, the control chip47overlaps with a portion of the semiconductor chip42X on the side of the first edge33with respect to the center of the semiconductor chip42X in the first direction X, as viewed in the second direction Y. The edge of the control chip47on the side of the second edge34is located so as to overlap with a portion of the semiconductor chip42X on the side of the first edge33with respect to the second electrode GP, as viewed in the second direction Y. The control chip47is located so as to overlap with the second electrode GP of the semiconductor chip43X, as viewed in the second direction Y.

The diodes49U to49W are located on the side of the first edge33of the substrate30in the first direction X, with respect to the semiconductor chip41X. The diode49U is located so as to overlap with a portion of the semiconductor chip42X on the side of the second edge34, with respect to the center of the semiconductor chip42X in the first direction X, as viewed in the second direction Y. The diode49V is located so as to overlap with a portion of the semiconductor chip42X on the side of the first edge33, with respect to the center of the semiconductor chip42X in the first direction X, as viewed in the second direction Y. The diode49W is located on the side of the first edge33of the substrate30in the first direction X, with respect to the semiconductor chip42X. The diode49W is located so as to overlap with a portion of the semiconductor chip43X on the side of the second edge34, with respect to the center of the semiconductor chip43X in the first direction X, as viewed in the second direction Y.

The control chip47is located on the side of the first edge33of the substrate30in the first direction X, with respect to the bonding portion28aof the lead frame28D. In addition, the control chip47is located on the side of the second edge34of the substrate30in the first direction X, with respect to the bonding portion28aof the lead frame28H. The control chip47is located so as to overlap with the lead frames28E to28G, as viewed in the second direction Y.

The diode49U is located between the lead frame28D and the lead frame28E in the first direction X, at a position closer to the lead frame28E than to the lead frame28D, in the first direction X. The diode49V is located so as to overlap with the lead frame28E, as viewed in the second direction Y. The diode49W is located between the lead frame28F and the lead frame28G in the first direction X, at a position closer to the lead frame28F than to the lead frame28G, in the first direction X.

The semiconductor package1includes a wiring pattern350, electrically connecting the control chips47and48, the diodes49U to49W, and the primary-side circuit chip160X. The wiring pattern350is formed in the first region30B of the substrate30. To the wiring pattern350, the lead frames28A to28S are connected. The wiring pattern350is formed of a metal material (fifth conductive material). In an example, the wiring pattern350is formed by sintering the metal material. Examples of the metal material (fifth conductive material) include silver (Ag), copper (Cu), and gold (Au). In this embodiment, silver is employed as the metal material. In other words, the wiring pattern350contains silver.

As shown inFIG. 98, the wiring pattern350includes an island portion351on which the control chip47is mounted, an island portion352on which the control chip48is mounted, and an island portion353on which the primary-side circuit chip160X and the transformer chip190X are mounted. The wiring pattern350also includes a connection wiring354connecting the island portion351and the island portion352, wirings355A to355R, intermediary wirings356A to356C, and intermediary wirings357A to357E.

The wirings355A to355R are connected to the lead frames28A to28I and28K to28S. The wirings355A to355F and355H to355S each include a first land portion355a, a second land portion355b, and a connection wiring355c. The wiring355G includes the first land portion355aand the connection wiring355c. The intermediary wirings356A to356C are first intermediary wirings that intermediate between the control chip47and the control chip48. The intermediary wirings357C and357D are third intermediary wirings that intermediate for the electrical connection between the first electrode SP and second electrode GP of the semiconductor chip41X and the control chip47. The intermediary wirings357A to357C are fourth intermediary wirings that intermediate for the electrical connection between the respective second electrodes GP of the semiconductor chips44X to46X and the control chip48.

The island portion351is formed so as to overlap with the island portion21aof the lead frame20A and the semiconductor chips42X and43X, as viewed in the second direction Y. The island portion351has, for example, a rectangular shape in a plan view. In an example, the island portion351has the long sides extending along the first direction X. The edge of the island portion351on the side of the first edge33overlaps with the end portion of the semiconductor chip43X on the side of the first edge33, as viewed in the second direction Y. The edge of the island portion351on the side of the second edge34overlaps with a portion of the semiconductor chip42X on the side of the first edge33, as viewed in the second direction Y. In addition, the island portion351is formed so as to overlap with the respective bonding portions28aof the lead frames28E to28G, as viewed in the second direction Y. The control chip47mounted on the island portion351is located such that the center thereof in the second direction Y is located at a position on the island portion351on the side of the third edge35, with respect to the center of the island portion351in the second direction Y. Here, the position of the control chip47on the island portion351may be modified as desired.

Around the island portion351, the wirings355A to355H, the intermediary wirings355A to355C, and the intermediary wirings357D and357E are located. The wirings355A and355B are the wiring pattern constituting, for example, a boot strap circuit including the diode49U. The wirings355C and355D are the wiring pattern constituting, for example, a boot strap circuit including the diode49V. The wirings355E and355F are the wiring pattern constituting, for example, a boot strap circuit including the diode49W. The wiring355G is the ground pattern, for example connected to the island portion351on which the control chip47is mounted.

The respective first land portions355aof the wirings355A to355H are each connected to the bonding portion28aof the corresponding one of the lead frames28A to28H. The first land portions355aof the wirings355A to355H each have, for example, a rectangular shape in a plan view. In an example, the first land portions355aof the wirings355A to355H each have the long sides extending along the second direction Y.

The respective second land portions355bof the wirings355A to355C are located on the side of the second edge34of the substrate30, with respect to the island portion351. The second land portions355bof the wirings355A to355C are spaced apart from the island portion351in the first direction X. These second land portions355bare aligned in the second direction Y, with a clearance between each other.

The second land portion355bof the wiring355A is formed so as to stride over, in the second direction Y, the edge of the island portion351on the side of the third edge35. The second land portion355bof the wiring355A has, for example, a rectangular shape in a plan view. In an example, the second land portion355bof the wiring355A has the long sides extending along the first direction X. The second land portion355bof the wiring355B has, for example, a rectangular shape in a plan view. In an example, the second land portion355bof the wiring355B has the long sides extending along the first direction X.

The second land portion355bof the wiring355B is located on the side of the fourth edge36of the substrate30, with respect to the second land portion355bof the wiring355A. On the second land portion355bof the wiring355B, the diode49U is mounted via the conductive material MP. The diode49U is located such that the center thereof in the second direction Y is located at a position on the second land portion355bof the wiring355B, on the side of the third edge35in the second direction Y with respect to the center of the second land portion355bin the second direction Y. Here, the position of the diode49U on the second land portion355bof the wiring355B may be modified as desired.

The second land portion355bof the wiring355C is located on the side of the fourth edge36of the substrate30, with respect to the second land portion355bof the wiring355B. The second land portion355bof the wiring355C has, for example, a rectangular shape in a plan view. In an example, the second land portion355bof the wiring355C has the long sides extending along the second direction Y.

The respective second land portions355bof the wirings355C to355F are located on the side of the fourth edge36of the substrate30, with respect to the island portion351. The second land portions355bof the wirings355C to355F are spaced apart from the island portion351, in the second direction Y. These second land portions355bare aligned in the first direction X, with a clearance between each other.

The second land portion355bof the wiring355D is formed so as to overlap with the end portion of the island portion351on the side of the second edge34of the substrate30, as viewed in the second direction Y. This second land portion355bprotrudes from the edge of the island portion351on the side of the second edge34of the substrate30, toward the second edge34. The second land portion355bof the wiring355D is formed in a rectangular shape, having the long sides extending along the first direction X. On this second land portion355b, the diode49V is mounted via the conductive material MP. The diode49V is located such that the center thereof in the first direction X is located at a position on the second land portion355bof the wiring355D, on the side of the second edge34in the second direction Y, with respect to the center of the second land portion355bin the first direction X. Here, the position of the diode49U on the second land portion355bof the wiring355B may be modified as desired.

The second land portion355bof the wiring355E is located on the side of the first edge33of the substrate30, with respect to the second land portion355bof the wiring355D. The second land portion355bof the wiring355E has, for example, a rectangular shape in a plan view. In an example, the second land portion355bof the wiring355E has the long sides extending along the second direction Y. This second land portion355bis larger in size in the second direction Y, than the second land portion355bof the wiring355D.

The second land portion355bof the wiring355F is located on the side of the first edge33of the substrate30, with respect to the second land portion355bof the wiring355E. The second land portion355bof the wiring355F has, for example, a rectangular shape in a plan view. In an example, the second land portion355bof the wiring355F has the long sides extending along the first direction X. This second land portion355bis larger in size in the second direction Y, than the second land portion355bof the wiring355D. On the second land portion355bof the wiring355F, the diode49W is mounted via the conductive material MP. The diode49W is located such that the center thereof in the first direction X is located at a position on the second land portion355bof the wiring355F, on the side of the second edge34in the first direction X, with respect to the center of the second land portion355bin the first direction X. Here, the position of the diode49W on the second land portion355bof the wiring355F may be modified as desired.

The respective connection wirings355cof the wirings355A to355E have a similar shape to each other. The connection wirings355cof the wirings355A to355E each include a first portion, a second portion, and a third portion. The first portion extends along the second direction Y, toward the first land portion355a. The second portion extends along the first direction X, toward the second land portion355b. The third portion is connecting the first portion and the second portion. The third portion extends obliquely toward the second edge34and the fourth edge36of the substrate30. The connection wiring355cof the wiring355B further includes a fourth portion extending along the first direction X from the first land portion355atoward the first edge33, so as to circumvent the bonding portion28aof the lead frame28A, and a fifth portion connecting the fourth portion and the first portion. The fifth portion extends in parallel to the third portion. The connection wiring355cof the wiring355D further includes a fourth portion extending obliquely so as to be closer to the third edge35toward the first edge33of the substrate30, so as to circumvent the second land portion355bof the wiring355C, and a fifth portion extending along the second direction Y, from the fourth portion toward the third edge35.

The connection wiring355cof the wiring355F includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion355atoward the first edge33. The second portion extends obliquely from the first portion, so as to be closer to the third edge35toward the first edge33of the substrate30. The third portion extends along the second direction Y, from the second portion toward the third edge35. The third portion is connected to the second land portion355b.

The connection wiring355cof the wiring355G extends along the second direction Y, from the first land portion355atoward the third edge35. This connection wiring355cis connected to the end portion of the island portion351on the side of the fourth edge36. This connection wiring355cis also connected to a position on the island portion351, on the side of the first edge33with respect to the center of the island portion351in the first direction X. The connection wiring355cof the wiring355G is located on the side of the first edge33of the substrate30in the first direction X, with respect to the second land portion355bof the wiring355F. The connection wiring355cof the wiring355G is thicker than the respective connection wirings355cof the wirings355A to355F.

The island portion352is formed between the lead frame28I and the lead frame28J, in the first direction X. The island portion352is formed so as to overlap with a portion of the lead frame20B on the side of the first edge33, as viewed in the second direction Y. The island portion352has, for example, a rectangular shape in a plan view. In an example, the island portion352has the long sides extending along the second direction Y. The edge of the island portion352on the side of the third edge35is located on the side of the fourth edge36in the second direction Y, with respect to the edge of the island portion351on the side of the third edge35. The edge of the island portion352on the side of the third edge35overlaps with the control chip47, as viewed in the first direction X. The control chip48is located such that the center thereof in the first direction X coincides with the center of the island portion352in the second direction Y. The control chip48is located on the side of the first edge33in the first direction X, with respect to the center of the substrate30in the first direction X.

The connection wiring354has the same thickness as the connection wiring355cof the wiring355G. The end portion of the connection wiring354on the side of the first edge33is connected to the end portion of the island portion352on the side of the second edge34, in the first direction X. The end portion of the connection wiring354on the side of the first edge33is connected to the center of the island portion352in the second direction Y. The end portion of the connection wiring354on the side of the second edge34is connected to the end portion of the island portion351on the side of the first edge33, in the first direction X. The end portion of the connection wiring354on the side of the second edge34is connected to the end portion of the island portion351on the side of the third edge35, in the second direction Y. A widened portion354ais formed at the joint portion between the connection wiring354and the island portion352. The widened portion354ais formed in a tapered shape, so as to be wider in the second direction Y, from the connection wiring354toward the island portion352. The connection wiring354includes a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends along the first direction X, from the island portion351toward the first edge33. The second portion extends along the first direction X, from the island portion352toward the second edge34. The third portion extends along the second direction Y. The fourth portion is connecting the first portion and an end of the third portion. The fifth portion is connecting the second portion and the other end of the third portion. The fourth portion and the fifth portion each extend obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30.

The intermediary wirings356A to356C are formed closer to the fourth edge36than is the connection wiring354. The intermediary wiring356C is located closest to the connection wiring354, among the intermediary wirings356A to356C. The intermediary wiring356B is formed between the intermediary wiring356A and the intermediary wiring356B. The intermediary wirings356A to356C each include a first land portion356a, a second land portion356b, and a connection wiring356cconnecting the first land portion356aand the second land portion356b. The connection wiring356chas the same shape as the connection wiring354.

The respective first land portions356aof the intermediary wirings356A to356C are located on the side of the first edge33of the substrate30, with respect to the island portion351. The first land portions356aof the intermediary wirings356A to356C are spaced apart from the island portion351in the first direction X. These first land portions356aare aligned in the second direction Y, with a clearance between each other. The respective second land portions356bof the intermediary wirings356A to356C are located on the side of the second edge34of the substrate30, with respect to the island portion352. The second land portions356bof the intermediary wirings356A to356C are spaced apart from the island portion352in the first direction X. These second land portions356bare aligned in the second direction Y, with a clearance between each other.

The clearance between the respective connection wirings356cof the intermediary wirings356A to356C, adjacent to each other in the first direction X in the portion extending along the second direction Y, is narrower than the clearance between the connection wirings356cadjacent to each other in the second direction Y, in the portion extending along the first direction X.

The wiring355H is formed on the opposite side of the intermediary wiring356B, across the intermediary wiring356A. The wiring355H is the power source pattern that supplies, for example, the source voltage VCC to both of the control chip47and the control chip48. The wiring355H includes a connection wiring355xbranched from the connection wiring355c, and a second land portion355yformed at the distal end portion of the connection wiring355x.

The second land portion355bof the wiring355H is located close to the end portion of the island portion351on the side of the fourth edge36, in the second direction Y. The second land portion355bof the wiring355H is opposed to the end portion of the island portion351on the side of the first edge in the second direction Y, with a clearance therebetween. The second land portion355bof the wiring355H is located on the side of the second edge34of the substrate30in the first direction X, with respect to the first land portion355aof the wiring355H. The second land portion355bof the wiring355H is also located on the side of the third edge35of the substrate30in the second direction Y, with respect to the first land portion355aof the wiring355H.

The connection wiring355cof the wiring355H includes a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion355atoward the third edge35. The second portion extends obliquely from the first portion, so as to be closer to the third edge35toward the first edge33of the substrate30. The third portion extends from the second portion along the second direction Y. The fourth portion extends obliquely from the third portion, so as to be closer to the third edge35toward the second edge34of the substrate30. The third portion is located closer to the intermediary wiring356A, than to the connection wiring355cof the wiring355G. The fifth portion extends along the first direction X, from the fourth portion toward the second edge34. The fifth portion is connected to the second land portion355b. The connection wiring355xextends along the first direction X, from the joint portion between the first portion and the second portion toward the first edge33of the substrate30. The connection wiring355xis located on the side of the fourth edge36of the substrate30, with respect to the intermediary wiring356A. The second land portion355yis located on the side of the fourth edge36of the substrate30, with respect to the island portion352. The second land portion355yis opposed to the island portion352in the second direction Y, with a clearance therebetween. The second land portion355yis formed so as to overlap with the end portion of the control chip48on the side of the second edge34, as viewed in the second direction Y.

The wiring355I is formed in a region on the side of the fourth edge36of the substrate30, with respect to the connection wiring355xof the wiring355H. The second land portion355bof the wiring355I is located on the side of the fourth edge36, with respect to the island portion352. The second land portion355bof the wiring355I is opposed to the island portion352in the second direction Y, with a clearance therebetween. This second land portion355bis located at the same position in the second direction Y as the second land portion355y, and on the side of the first edge33of the substrate30with respect to the second land portion355y. The connection wiring355cof the wiring355I includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion355aof the wiring355I toward the first edge33. The second portion extends obliquely from the first portion, so as to be closer to the third edge35toward the first edge33of the substrate30. The second portion is connected to the second land portion355b.

The intermediary wirings357D and357E are located in a region on the side of the third edge35of the substrate30, with respect to the island portion351. The intermediary wiring357D is a third intermediary wiring electrically connecting the control chip47and the first electrode SP of the semiconductor chip41. The intermediary wiring357E is another third intermediary wiring electrically connecting the control chip47and the second electrode GP of the semiconductor chip41.

The intermediary wirings357D and357E each include a first land portion357a, a second land portion357b, and a connection wiring357cconnecting the first land portion357aand the second land portion357b.

The first land portion357aof the intermediary wiring357D is formed so as to overlap with the end portion of the control chip47on the side of the second edge34, as viewed in the second direction Y. The first land portion357aof the intermediary wiring357E is located on the side of the second edge34of the substrate30in the first direction X, with respect to the first land portion357aof the intermediary wiring357D. The first land portion357aof the intermediary wiring357E is located so as to overlap with the end portion of the island portion351on the side of the second edge34, as viewed in the second direction Y. Further, the first land portion357aof the intermediary wiring357D and the first land portion357aof the intermediary wiring357E are formed so as to overlap with each other, as viewed in the first direction X.

The respective second land portions357bof the intermediary wirings357D and357E are formed so as to overlap with the bonding portion28aof the lead frame28C, as viewed in the second direction Y. The second land portions357bof the intermediary wirings357D and357E are formed so as to overlap with each other, as viewed in the first direction X. The second land portions357bof the intermediary wirings357D and357E are formed so as to overlap with the semiconductor chip41X, as viewed in the second direction Y. More specifically, the second land portion357bof the intermediary wiring357D is located so as to overlap with a portion of the semiconductor chip41X on the side of the first edge33with respect to the center of the semiconductor chip41X in the first direction X, as viewed in the second direction Y. The second land portion357bof the intermediary wiring357E is located so as to overlap with a portion of the semiconductor chip41X on the side of the second edge34with respect to the center of the semiconductor chip41X in the first direction X, as viewed in the second direction Y. The second land portions357bof the intermediary wirings357D and357E are each formed so as to overlap with the second electrode GP of the semiconductor chip41X, as viewed in the second direction Y.

The respective connection wirings357cof the intermediary wirings357D and357E each extend along the first direction X. A first end portion of the connection wiring357cof the intermediary wiring357E is connected to the end portion of the first land portion357aof the intermediary wiring357E on the side of the first edge33, in the first direction X. The first end portion of the connection wiring357cof the intermediary wiring357E is connected to the end portion of the first land portion357aof the intermediary wiring357E on the side of the fourth edge36, in the second direction Y. A second end portion of the connection wiring357cof the intermediary wiring357E is connected to the end portion of the second land portion357bof the intermediary wiring357E on the side of the second edge34, in the first direction X. The second end portion of the connection wiring357cof the intermediary wiring357E is connected to the end portion of the second land portion357bof the intermediary wiring357E on the side of the fourth edge36, in the second direction Y. A first end portion of the connection wiring357cof the intermediary wiring357D is connected to the end portion of the first land portion357aof the intermediary wiring357D on the side of the first edge33, in the first direction X. The first end portion of the connection wiring357cof the intermediary wiring357D is connected to the end portion of the first land portion357aof the intermediary wiring357D on the side of the fourth edge36, in the second direction Y. A second end portion of the connection wiring357cof the intermediary wiring357D is connected to the end portion of the second land portion357bof the intermediary wiring357D on the side of the second edge34, in the first direction X. The second end portion of the connection wiring357cof the intermediary wiring357D is connected to the end portion of the second land portion357bof the intermediary wiring357D on the side of the third edge35, in the second direction Y.

To the second land portion357bof the intermediary wiring357D, a wire362D is connected. The wire362D is connected to the first electrode SP of the semiconductor chip41X. To the second land portion357bof the intermediary wiring357E, a wire362E is connected. The wire362E is connected to the second electrode GP of the semiconductor chip41X.

The control chip47, and the wirings355A to355F,355H and the intermediary wirings356A to356C are connected via wires358A to358R. The wires358A to358R may be, for example, formed of the same material as the wire208A according to the eighth embodiment.

Two wires358A are connecting the control chip47and the first electrode SP and second electrode GP of the semiconductor chip42X. Two wires358B are connecting the control chip47and the first electrode SP and second electrode GP of the semiconductor chip43X. First end portions of the respective wires358A are connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y. The first end portions of the wires358A are connected to the center of the control chip47in the first direction X. First end portions of the respective wires358B are connected to the end portion of the control chip47on the side of the third edge35of the substrate30, in the second direction Y. Further, the first end portions of the wires358B are connected to a position on the control chip47on the side of the first edge33in the first direction X, with respect to the center of the control chip47in the first direction X.

The wire358C is connecting the control chip47and the diode49U. The wire358D is connecting the control chip47and the diode49V. The wire358E is connecting the control chip47and the diode49W. A first end portion of the wire358C is connected to the end portion of the control chip47on the side of the second edge34, in the first direction X. The first end portion of the wire358C is connected to the center of the control chip47in the second direction Y. A first end portion of the wire358D is connected to the end portion of the control chip47on the side of the fourth edge36, in the second direction Y. The first end portion of the wire358C is connected to a position on the control chip47on the side of the second edge34in the first direction X, with respect to the center of the control chip47in the first direction X. A first end portion of the wire358E is connected to the end portion of the control chip47on the side of the fourth edge36, in the second direction Y. The first end portion of the wire358E is connected to a position on the control chip47on the side of the first edge33in the first direction X, with respect to the center of the control chip47in the first direction X.

The wire358F is connecting the second land portion355bof the wiring355B and the control chip47. The wire358G is connecting the second land portion355bof the wiring355E and the control chip47. The wire358H is connecting the second land portion355bof the wiring355F and the control chip47. A first end portion of the wire358F is connected to a position on the control chip47on the side of the second edge34in the first direction X, with respect to the center of the control chip47in the first direction X. The first end portion of the wire358F is connected to the center of the control chip47in the second direction Y. A second end portion of the wire358F is connected to a position on the second land portion355bof the wiring355B, on the side of the fourth edge36in the second direction Y with respect to the diode49U. A first end portion of the wire358G is connected to the center of the control chip47in both of the first direction X and the second direction Y. A second end portion of the wire358G is connected to a position on the second land portion355bof the wiring355D, on the side of the first edge33with respect to the diode49V. A first end portion of the wire358H is connected to a position on the control chip47on the side of the first edge33in the first direction X, with respect to the center of the control chip47in the first direction X. The first portion of the wire358H is connected to the center of the control chip47in the second direction Y. A second end portion of the wire358H is connected to a position on the second land portion355bof the wiring355F, on the side of the first edge33with respect to the diode49W.

The wire358I is connecting the control chip47and the second land portion355bof the wiring355A. The wire358J is connecting the control chip47and the second land portion355bof the wiring355C. The wire358K is connecting the control chip47and the second land portion355bof the wiring355E. A first end portion of the wire358I is connected to the end portion of the control chip47on the side of the second edge34of the substrate30in the first direction X. The first end portion of the wire358I is connected to a position on the control chip47on the side of the third edge35in the second direction Y, with respect to the first end portion of the wire358C. A second end portion of the wire358I is connected to the end portion of the second land portion355bof the wiring355B, on the side of the first edge33in the first direction X. A first end portion of the wire358J is connected to the end portion of the control chip47on the side of the fourth edge36in the second direction Y. The first end portion of the wire358J is connected to the end portion of the control chip47on the side of the second edge34in the first direction X. A second end portion of the wire358J is connected to the end portion of the second land portion355bof the wiring355C, on the side of the third edge35in the first direction X. A first end portion of the wire358K is connected to the end portion of the control chip47on the side of the fourth edge36in the second direction Y. The first end portion of the wire358K is connected to the center of the control chip47in the first direction X. A second end portion of the wire358K is connected to the end portion of the second land portion355bof the wiring355E, on the side of the third edge35in the second direction Y.

Three wires358L are connecting the second land portion355bof the wiring355H and the control chip47. A first end portion of the wire358L is connected to the end portion of the control chip47on the side of the fourth edge36, in the second direction Y. The first end portion of the wire358L is connected to the end portion of the control chip47on the side of the first edge33, in the first direction X. A second end portion of the wire358L is connected to the second land portion355bof the wiring355H.

The wire358M is connecting the first land portion356aof the intermediary wiring356A and the control chip47. The wire358N is connecting the first land portion356aof the intermediary wiring356B and the control chip47. The wire358O is connecting the first land portion356aof the intermediary wiring356C and the control chip47. Respective first end portions of the wires358M to358O are connected to the end portion of the control chip47on the side of the first edge33, in the first direction X. The first end portions of the wires358M to358O are each connected to a position on the control chip47on the side of the fourth edge36in the second direction Y, with respect to the center of the control chip47in the second direction Y. The first end portions of the wires358M to358O are aligned in the second direction Y, with a clearance between each other. The first end portion of the wire358M is located on the side of a position on the control chip47on the side of the fourth edge36, with respect to the first end portions of the wires358N and358O. The first end portion of the wire358N is located between the first end portion of the wire358M and the first end portion of the wire358O, in the second direction Y. A second end portion of the wire358M is connected to the first land portion356aof the intermediary wiring356A. A second end portion of the wire358N is connected to the first land portion356aof the intermediary wiring356B. A second end portion of the wire358N is connected to the first land portion356aof the intermediary wiring356C.

The wire358P is connecting the control chip47and the connection wiring354. A first end portion of the wire358P is connected to the end portion of the control chip47on the side of the first edge33in the first direction X. The first end portion of the wire358P is connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y. A second end portion of the wire358P is connected to the end portion of the connection wiring354connected to the island portion351.

The wire358Q is connecting the control chip47and the intermediary wiring357D. The wire358R is connecting the control chip47and the intermediary wiring357E. A first end portion of the wire358Q is connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y. The first end portion of the wire358Q is connected to a position on the control chip47on the side of the second edge34in the first direction X, with respect to the center of the control chip47in the first direction X. A second end portion of the wire358Q is connected to the second land portion357bof the intermediary wiring357D. A first end portion of the wire358R is connected to the end portion of the control chip47on the side of the third edge35, in the second direction Y. The first end portion of the wire358R is connected to the end portion of the control chip47on the side of the second edge34, in the first direction X. A second end portion of the wire358R is connected to the second land portion357bof the intermediary wiring357E.

The island portion353is located on the side of the first edge33of the substrate30in the first direction X, with respect to the island portion352. The island portion353is located adjacent to the island portion352, in the first direction X. The transformer chip190X and the primary-side circuit chip160X are mounted on the island portion353. The size in the second direction Y of the region of the island portion353where the transformer chip190X is mounted is larger than the size in the second direction Y of the island portion352. The island portion353includes a land portion353aformed at the end portion on the side of the fourth edge36, in the second direction Y. To the land portion353a, the bonding portion28aof the lead frame28J is connected, via the bonding material SD9. In addition, a first cutaway portion353band a second cutaway portion353care formed in the island portion353. The first cutaway portion353bis formed between a region of the island portion353where the primary-side circuit chip160X is mounted, and the land portion353a, in the second direction Y. The first cutaway portion353bis formed so as to overlap with the land portion353a, as viewed in the second direction Y. The first cutaway portion353bis recessed toward the second edge34, with respect to the and portion353a. The second cutaway portion353cis formed at the end portion of the island portion353on the side of the third edge35, in the second direction Y. The second cutaway portion353cis formed so as to overlap with the region where the primary-side circuit chip160X is mounted, as viewed in the second direction Y. The edge of the transformer chip190X on the side of the fourth edge36in the second direction Y overlaps with the first cutaway portion353b, as viewed in the first direction X. The edge of the transformer chip190X on the side of the third edge35in the second direction Y overlaps with the second cutaway portion353c, as viewed in the first direction X. The edge of the primary-side circuit chip160X on the side of the second edge34in the first direction X overlaps with the first cutaway portion353band the second cutaway portion353c, as viewed in the second direction Y.

The primary-side circuit chip160X and the transformer chip190X are connected via a plurality of wires360. Respective first end portions of the plurality of wires360are connected to the end portion of the primary-side circuit chip160X on the side of the second edge34, in the first direction X. The first end portions of the plurality of wires360are spaced apart from each other, in the second direction Y. Respective second end portions of the plurality of wires360are connected to the end portion of the transformer chip190X on the side of the first edge33in the first direction X. The second end portions of the plurality of wires360are spaced apart from each other, in the second direction Y. In an example, the plurality of wires360include a plurality of sets, each composed of three wires, as shown inFIG. 100. Such sets, each including three wires360, are arranged along the second direction Y, with a clearance between each other. The three wires360constituting one set are aligned along the second direction Y, with a clearance between each other.

The transformer chip190X and the control chip48are connected via a plurality of wires361. Respective first end portions of the plurality of wires361are connected to the center of the transformer chip190X in the first direction X. The first end portions of the plurality of wires361are spaced apart from each other, in the second direction Y. Respective second end portions of the plurality of wires361are connected to the end portion of the control chip48on the side of the first edge33in the first direction X. The second end portions of the plurality of wires361are spaced apart from each other, in the second direction Y. In an example, the plurality of wires361include a plurality of sets, each composed of three wires, as shown inFIG. 100. Such sets, each including three wires361, are arranged along the second direction Y, with a clearance between each other. The three wires361constituting one set are aligned along the second direction Y, with a clearance between each other. The wires360and361may be, for example, formed of the same material as that of the wires211and212according to the eighth embodiment.

The wirings355J to355R are formed around the island portion353. The wiring355J is connected to the lead frame28K. The wiring355K is connected to the lead frame28L. The wiring355L is connected to the lead frame28M. The wiring355M is connected to the lead frame28N. The wiring355N is connected to the lead frame28O. The wiring355O is connected to the lead frame28P. The wiring355P is connected to the lead frame28Q. The wiring355Q is connected to the lead frame28R. The wiring355R is connected to the lead frame28S.

The wiring355J is the power source pattern that supplies, for example, the source voltage VCC to the primary-side circuit chip160X. The wiring355K is the first signal pattern that transmits, for example, the control signal for the semiconductor chip41X to the primary-side circuit chip160X. The wiring355L is the first signal pattern that transmits, for example, the control signal for the semiconductor chip42X to the primary-side circuit chip160X. The wiring355M is the first signal pattern that transmits, for example, the control signal for the semiconductor chip43X to the primary-side circuit chip160X. The wiring355N is the second signal pattern that transmits, for example, the control signal for the semiconductor chip44X to the primary-side circuit chip160X. The wiring355O is the second signal pattern that transmits, for example, the control signal for the semiconductor chip45X to the primary-side circuit chip160X. The wiring355P is the second signal pattern that transmits, for example, the control signal for the semiconductor chip46X to the primary-side circuit chip160X. The wiring355Q is the signal pattern that transmits, for example, the fault detection signal FO to the lead frame28R. The wiring355R is the signal pattern that transmits, for example, the temperature detection signal VOT to the primary-side circuit chip160X.

The second land portion355bof the wiring355J is located in the first cutaway portion353bof the island portion353. The second land portion355bof the wiring355K is located on the side of the first edge33of the substrate30, with respect to the second land portion355bof the wiring355J. The second land portion355bof the wiring355J and the second land portion355bof the wiring355K are located so as to overlap with each other, as viewed in the second direction Y. In other words, the respective second land portions355bof the wirings355J and355K are aligned in the first direction X, with a clearance therebetween. The second land portion355bof the wiring355J is formed so as to overlap with the primary-side circuit chip160X, as viewed in the second direction Y. The second land portion355bof the wiring355K is located on the side of the first edge33of the substrate30, with respect to the primary-side circuit chip160X. The second land portion355bof the wiring355K is located so as to overlap with the end portion of the island portion353on the side of the first edge33of the substrate30, as viewed in the second direction Y. The second land portion355bof the wiring355J is located on the side of the second edge34, with respect to the first land portion355aof the wiring355J. The second land portion355bof the wiring355K is located on the side of the second edge34of the substrate30, with respect to the first land portion355aof the wiring355K. Further, the second land portion355bof the wiring355K is formed so as to overlap with the first land portion355aof the wiring355J, as viewed in the second direction Y.

The connection wiring355cof the wiring355J extends obliquely toward the second edge34and the third edge35of the substrate30, so as to secure a space for forming the second land portion355band the connection wiring355cof the wiring355K, between the island portion353and the lead frame28K in the second direction Y. The connection wiring355cof the wiring355K includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends obliquely so as to be closer to the third edge35, toward the second edge34of the substrate30. The second portion extends along the first direction X, from the first portion toward the second edge34. The third portion extends obliquely from the second portion, so as to be closer to the third edge35toward the second edge34. The third portion is connected to the second land portion355b.

The respective second land portions355bof the wirings355L to355R are located on the side of the first edge33of the substrate30, with respect to the island portion353. The second land portions355bof the wirings355L to355R are opposed in the first direction X to a region of the island portion353where the primary-side circuit chip160X is mounted, with a clearance therebetween. These second land portions355bare aligned in a row in the second direction Y, with a clearance between each other. The second land portions355bof the wirings355L to355R are aligned in the order of second land portion355bof the wiring355L, second land portion355bof the wiring355M, second land portion355bof the wiring355N, second land portion355bof the wiring355O, second land portion355bof the wiring355P, second land portion355bof the wiring355Q, and second land portion355bof the wiring355R, from the side of the fourth edge36toward the third edge35of the substrate30. These second land portions355bare formed on the side of the second edge34of the substrate30in the first direction X, with respect to the lead frame28L (first land portion355aof the wiring355K).

The respective connection wirings355cof the wirings355L to355N each include a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion355atoward the third edge35. The second portion extends along the first direction X, from the second land portion355btoward the first edge33. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the third edge35toward the second edge34of the substrate30.

The connection wiring355cof the wiring355O includes a first portion and a second portion, each of which will be described hereunder. The first portion extends obliquely from the first land portion355a, so as to be closer to the third edge35toward the second edge34of the substrate30. The second portion extends along the first direction X, from the first portion toward the second edge34. The second portion is connected to the second land portion355b.

The respective connection wirings355cof the wirings355P to355R each include a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion355atoward the second edge34. The second portion extends along the first direction X, from the second land portion355btoward the first edge33. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the third edge35toward the second edge34of the substrate30. The respective second portions of the connection wirings355cof the wirings355L to355N, the first portion of the connection wiring355cof the wiring355O, and the respective third portions of the wirings355P to355R are parallel to each other.

In addition, the intermediary wirings357A to357C are formed around the island portion352and the island portion353. The intermediary wirings357A to357C each include a first land portion357a, a second land portion357b, and a connection wiring357c. The intermediary wiring357A electrically connects, for example, the control chip47and the second electrode GP of the semiconductor chip45X. The intermediary wiring357C electrically connects, for example, the control chip47and the second electrode GP of the semiconductor chip46X. The intermediary wiring357A electrically connects, for example, the control chip47and the second electrode GP of the semiconductor chip44X.

The respective second land portions357bof the intermediary wirings357A to357C are located on the side of the second edge34of the substrate30, with respect to the island portion352. The second land portions357bof the intermediary wirings357A to357C are opposed to the island portion352in the first direction X, with a clearance between each other. These second land portions357bare aligned in the second direction Y, with a clearance between each other. Further, these second land portions357bare located, in the first direction X, in a region surrounded by the island portion352and the connection wiring354, from the side of the first edge33, the side of the fourth edge36, and the side of the second edge34of the substrate30. These second land portions357bare aligned in the order of second land portion357bof the intermediary wiring357A, second land portion357bof the intermediary wiring357B, and second land portion357bof the intermediary wiring357C, from the side of the fourth edge36of the substrate30toward the third edge35. The second land portion357bof the intermediary wiring357A is larger in size in the first direction X, than the second land portion357bof the intermediary wiring357B and the second land portion357bof the intermediary wiring357C. The second land portion357bof the intermediary wiring357B is larger in size in the first direction X, than the second land portion357bof the intermediary wiring357C. The size of the second land portion357bof the intermediary wiring357A in the second direction Y, the size of the second land portion357bof the intermediary wiring357B in the second direction Y, and the size of the second land portion357bof the intermediary wiring357C in the second direction Y, are equal to each other. Here, the respective sizes of the second land portion357bof the intermediary wiring357A, the second land portion357bof the intermediary wiring357B, and the second land portion357bof the intermediary wiring357C in the second direction Y, expressed as “equal to each other”, may differ by within ±5% from the size of the second land portion357bof the intermediary wiring357A in the second direction Y.

The respective first land portions357aof the intermediary wirings357A to357C are formed on the side of the third edge35of the substrate30, with respect to the island portion352and the island portion353. The first land portions357aof the intermediary wirings357A to357C are aligned in the first direction X, with a clearance between each other. The first land portion357aof the intermediary wiring357A is located between the island portion352and the island portion351, in the first direction X. The first land portion357aof the intermediary wiring357A is located so as to overlap with the second land portion357bof the intermediary wiring357A, as viewed in the second direction Y. The edge of the first land portion357aof the intermediary wiring357A on the side of the second edge34is located on the side of the second edge34of the substrate30in the first direction X, with respect to the edge of the second land portion357bof the intermediary wiring357A on the side of the second edge34. The first land portion357aof the intermediary wiring357B is formed so as to overlap with a region of the island portion353where the primary-side circuit chip160X is mounted, as viewed in the second direction Y. The first land portion357aof the intermediary wiring357B is located so as to overlap with the first land portion355aof the wiring355J, the second land portion355bof the wiring355K, and the bonding portion28aof the lead frame28K, as viewed in the second direction Y. The first land portion357aof the intermediary wiring357C is located on the side of the first edge33of the substrate30, with respect to the island portion353. The first land portion357aof the intermediary wiring357C is located so as to overlap with the lead frame28O, as viewed in the second direction Y.

Further, as shown inFIG. 97, the first land portion357aof the intermediary wiring357A is located so as to overlap with the edge of the semiconductor chip44X on the side of the second edge34, as viewed in the second direction Y. In other words, this first land portion357ais located on the side of the second edge34of the substrate30in the first direction X, with respect to the second electrode GP of the semiconductor chip44X. The first land portion357aof the intermediary wiring357A and the second electrode GP of the semiconductor chip44X are connected via the wire362A (seeFIG. 98).

The first land portion357aof the intermediary wiring357B is formed so as to overlap with the second electrode GP of the semiconductor chip45X, as viewed in the second direction Y. The first land portion357aof the intermediary wiring357B and the second electrode GP of the semiconductor chip45X are connected via the wire362B (seeFIG. 98).

The first land portion357aof the intermediary wiring357C is formed so as to overlap with the second electrode GP of the semiconductor chip46X, as viewed in the second direction Y. The first land portion357aof the intermediary wiring357C and the second electrode GP of the semiconductor chip46X are connected via the wire362C (seeFIG. 98).

As shown inFIG. 100, the control chip48, and the wirings355H and355I, the intermediary wirings356A to356C, and the intermediary wirings357A to357C are connected via wires359A to359H.

Two wires359A are connecting the control chip48and the second land portion355yof the wiring355H. The wire359B is connecting the control chip48and the second land portion355bof the wiring355I. Respective first end portions of the two wires359A are connected to the end portion of the control chip48on the side of the fourth edge36, in the second direction Y. The first end portions of the two wires359A are connected to positions on the control chip48on the side of the second edge34in the first direction X, with respect to the center of the control chip48in the first direction X. Respective second end portions of the two wires359A are connected to the second land portion355yof the wiring355H. A first end portion of the wire359B is connected to the end portion of the control chip48on the side of the fourth edge36, in the second direction Y. The first end portion of the wire359B is connected to a position on the control chip48on the side of the first edge33in the first direction X, with respect to the center of the control chip48in the first direction X. A second end portion of the wire359B is connected to the second land portion355bof the wiring355I.

The wire359C is connecting the control chip48and the second land portion356bof the intermediary wiring356A. The wire359D is connecting the control chip48and the second land portion356bof the intermediary wiring356B. The wire359E is connecting the control chip48and the second land portion356bof the intermediary wiring356C.

Respective first end portions of the wires359C to359E are connected to the end portion of the control chip48on the side of the second edge34, in the first direction X. The first end portions of the wires359C to359E are each connected to a position on the control chip48on the side of the fourth edge36in the second direction Y, with respect to the center of the control chip48in the second direction Y. The first end portions of the wires359C to359E are aligned in the second direction Y, with a clearance between each other. The first end portion of the wire359C is located at a position of the control chip48on the side of the fourth edge36in the second direction Y, with respect to the first end portion of the wire359D and the first end portion of the wire359E. The first end portion of the wire359D is located at a position of the control chip48on the side of the fourth edge36in the second direction Y, with respect to the first end portion of the wire359E. A second end portion of the wire359C is connected to the second land portion356bof the intermediary wiring356A. A second end portion of the wire359D is connected to the second land portion356bof the intermediary wiring3563. A second end portion of the wire359E is connected to the second land portion356bof the intermediary wiring356C.

The wire359F is electrically connecting the control chip and the intermediary wiring357A. The wire359G is electrically connecting the control chip48and the intermediary wiring357B. The wire359H is electrically connecting the control chip48and the intermediary wiring357C.

A first end portion of the wire359F is connected to the end portion of the control chip48on the side of the second edge34of the substrate30, in the first direction X. The first end portion of the wire359F is connected to a position on the control chip48on the side of the fourth edge36in the second direction Y, with respect to the center of the control chip48in the second direction Y. A second end portion of the wire359F is connected to the second land portion357bof the intermediary wiring357A. More specifically, the second end portion of the wire359F is connected to a position on the second land portion357bof the intermediary wiring357A on the side of the first edge33, with respect to the center of the second land portion357bin the first direction X. A first end portion of the wire359G is connected to the end portion of the control chip48on the side of the second edge34in the first direction X. The first end portion of the wire359G is connected to a position on the control chip48on the side of the third edge35in the second direction Y, with respect to the center of the control chip48in the second direction Y. A second end portion of the wire359G is connected to the second land portion357bof the intermediary wiring357B. A first end portion of the wire359H is connected to the end portion of the control chip48on the side of the second edge34, in the first direction X. The first end portion of the wire359H is connected to the end portion of the control chip48on the side of the third edge35, in the second direction Y. A second end portion of the wire359H is connected to the second land portion357bof the intermediary wiring357C.

The primary-side circuit chip160X and the wirings355J to355R are connected via wires363A to363I. Respective first end portions of two wires363A are connected to the end portion of the primary-side circuit chip160X on the side of the fourth edge36, in the second direction Y. The first end portions of the two wires363A are each connected to a position on the primary-side circuit chip160X on the side of the second edge34in the first direction X, with respect to the center of the primary-side circuit chip160X in the first direction X. Respective second end portions of the two wires363A are connected to the second land portion355bof the wiring355J.

A first end portion of the wire363B is connected to a position on the primary-side circuit chip160X on the side of the fourth edge36in the second direction Y, with respect to the center of the primary-side circuit chip160X in the second direction Y. The first end portion of the wire363B is connected to a position on the primary-side circuit chip160X on the side of the first edge33in the first direction X, with respect to the center of the primary-side circuit chip160X in the first direction X. A second end portion of the wire363B is connected to the second land portion355bof the wiring355K.

A first end portion of the wire363C is connected to a position on the primary-side circuit chip160X on the side of the fourth edge36in the second direction Y, with respect to the center of the primary-side circuit chip160X in the second direction Y. The first end portion of the wire363C is connected to the position on the primary-side circuit chip160X on the side of the fourth edge36in the second direction Y, with respect to the first end portion of the wire363B. The first end portion of the wire363C is connected to a position on the primary-side circuit chip160X on the side of the first edge33in the first direction X, with respect to the center of the primary-side circuit chip160X in the first direction X. A second end portion of the wire363C is connected to the second land portion355bof the wiring355L.

A first end portion of the wire363D is connected to a position on the primary-side circuit chip160X on the side of the fourth edge36in the second direction Y, with respect to the center of the primary-side circuit chip160X in the second direction Y. The first end portion of the wire363D is connected to the position on the primary-side circuit chip160X on the side of the fourth edge36in the second direction Y, with respect to the first end portion of the wire363C. The first end portion of the wire363D is connected to a position on the primary-side circuit chip160X on the side of the first edge33in the first direction X, with respect to the center of the primary-side circuit chip160X in the first direction X. A second end portion of the wire363D is connected to the second land portion355bof the wiring355M.

A first end portion of the wire363E is connected to a position on the primary-side circuit chip160X on the side of the third edge35in the second direction Y, with respect to the center of the primary-side circuit chip160X in the second direction Y. The first end portion of the wire363E is connected to a position on the primary-side circuit chip160X on the side of the first edge33in the first direction X, with respect to the center of the primary-side circuit chip160X in the first direction X. A second end portion of the wire363E is connected to the second land portion355bof the wiring355N.

A first end portion of the wire363F is connected to a position on the primary-side circuit chip160X on the side of the third edge35in the second direction Y, with respect to the center of the primary-side circuit chip160X in the second direction Y. The first end portion of the wire363F is connected to the position on the primary-side circuit chip160X on the side of the third edge35in the second direction Y, with respect to the first end portion of the wire363E. The first end portion of the wire363F is connected to a position on the primary-side circuit chip160X on the side of the first edge33in the first direction X, with respect to the center of the primary-side circuit chip160X in the first direction X. A second end portion of the wire363F is connected to the second land portion355bof the wiring355O.

A first end portion of the wire363G is connected to a position on the primary-side circuit chip160X on the side of the third edge35in the second direction Y, with respect to the center of the primary-side circuit chip160X in the second direction Y. The first end portion of the wire363G is connected to the position on the primary-side circuit chip160X on the side of the third edge35in the second direction Y, with respect to the first end portion of the wire363F. The first end portion of the wire363G is connected to a position on the primary-side circuit chip160X on the side of the first edge33in the first direction X, with respect to the center of the primary-side circuit chip160X in the first direction X. A second end portion of the wire363G is connected to the second land portion355bof the wiring355P.

A first end portion of the wire363H is connected to a position on the primary-side circuit chip160X on the side of the third edge35in the second direction Y, with respect to the center of the primary-side circuit chip160X in the second direction Y. The first end portion of the wire363H is connected to the position on the primary-side circuit chip160X on the side of the third edge35in the second direction Y, with respect to the first end portion of the wire3630. The first end portion of the wire363H is connected to a position on the primary-side circuit chip160X on the side of the first edge33in the first direction X, with respect to the center of the primary-side circuit chip160X in the first direction X. A second end portion of the wire363H is connected to the second land portion355bof the wiring355Q.

A first end portion of the wire363I is connected to a position on the primary-side circuit chip160X on the side of the third edge35in the second direction Y, with respect to the center of the primary-side circuit chip160X in the second direction Y. The first end portion of the wire363I is connected to the position on the primary-side circuit chip160X on the side of the third edge35in the second direction Y, with respect to the first end portion of the wire363H. The first end portion of the wire363I is connected to a position on the primary-side circuit chip160X on the side of the first edge33in the first direction X, with respect to the center of the primary-side circuit chip160X in the first direction X. A second end portion of the wire363I is connected to the second land portion355bof the wiring355R.

Further, as shown inFIG. 97, in this embodiment the wires24A to24F, connecting the semiconductor chips41X to46X, the diodes41Y to46Y, and the lead frames20B to20G, are each composed of three wires. In this case, the wire diameter of the wires24A to24F may be finer than the wire diameter of the wires24A to24F adopted when the wires24A to24F are each formed of a single wire.

Advantageous Effects

This embodiment provides the following advantageous effects, in addition to those described in (2-1) of the eighth embodiment, and those provided by the eleventh embodiment.

(12-1) The wiring pattern350includes the intermediary wirings357A to357E. The respective second land portions357bof the intermediary wirings357A to357C are formed close to the corresponding one of the semiconductor chips44X to46X. Therefore, the wire362A for connecting the second land portion357bof the intermediary wiring357A and the second electrode GP of the semiconductor chip44X, the wire362B for connecting the second land portion357bof the intermediary wiring357B and the second electrode GP of the semiconductor chip45X, and the wire362C for connecting the second land portion357bof the intermediary wiring357C and the second electrode GP of the semiconductor chip46X, can each be shortened. Likewise, the respective second land portions357bof the intermediary wirings357D and357E are formed close to the semiconductor chip41X. Therefore, the wire362D for connecting the second land portion357bof the intermediary wiring357D and the first electrode SP of the semiconductor chip41X, and the wire362E for connecting the second land portion357bof the intermediary wiring357E and the second electrode GP of the semiconductor chip41X can each be shortened.

As described above, the wires362A to362E can each be shortened. Therefore, when the material for forming the first resin10flows into the cavity of a mold, in the forming process of the first resin10, the wires362A to362E can be prevented from being deformed by the flow of the resin, thereby being electrically connected to other elements of the semiconductor package1.

(12-2) The respective first land portions357aof the intermediary wirings357D and357E overlap with each other, and the respective second land portions357bof the intermediary wirings357D and357E overlap with each other, as viewed in the first direction X. Such a configuration allows the space for locating the intermediary wirings357D and357E to be made smaller in the second direction Y, and also allows the distance between the control chip47and the semiconductor chips42X and43X to be shortened. Therefore, the wire358A for connecting the control chip47and the second electrode GP and first electrode SP of the semiconductor chip42X, and the wire358B for connecting the control chip47and the second electrode GP and first electrode SP of the semiconductor chip43X can each be shortened.

Thirteenth Embodiment

Referring toFIG. 101toFIG. 104, a semiconductor package1according to a thirteenth embodiment will be described. The semiconductor package1according to this embodiment is different from the semiconductor package1according to the eighth embodiment, mainly in including control chips47U,47V, and47W, primary-side circuit chips160Y and160Z, and transformer chips190U,190V, and190W, in place of the control chip47, the primary-side circuit chip160X, and the transformer chip190X, compared with the semiconductor package1according to the eighth embodiment. In the description given hereunder, similar elements to those of the eighth embodiment will be given the same numeral, and a part or the whole of the description thereof may be omitted.

In this embodiment, the terminal arrangement of the lead frames28A to28U is as follows. The lead frame28A constitutes the VSU terminal. The lead frame28B constitutes the VBU terminal. The lead frame28C constitutes the VSV terminal. The lead frame28D constitutes the VBV terminal. The lead frame28E constitutes the VSW terminal. The lead frame28F constitutes the VBW terminal. The lead frame28G,28H constitutes the non-connection terminal. The lead frame28I constitutes the HINU terminal. The lead frame28J constitutes the HINV terminal. The lead frame28K constitutes the HINW terminal. The lead frame28L constitutes the third VCC terminal. The lead frame28M constitutes the LINU terminal. The lead frame28N constitutes the LINV terminal. The lead frame28O constitutes the LINW terminal. The lead frame28P constitutes the FO terminal. The lead frame28Q constitutes the VCT terminal. The lead frame28R constitutes the third GND terminal. The lead frame28S constitutes the CIN terminal (detection terminal CIN). The lead frame28T constitutes the second VCC terminal. The lead frame28U constitutes the second GND terminal.

The primary-side circuit chip160Y is electrically connected to each of the transformer chips190U to190W. The primary-side circuit chip160Y is located on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the transformer chips190U to190W. To the primary-side circuit chip160Y, the control signal for controlling the operation of the semiconductor chips41X to43X is inputted. The primary-side circuit chip160Y is located on the side of the third edge35of the substrate30in the second direction Y, with respect to the lead frames28H and28G. The primary-side circuit chip160Y is located so as to overlap with the lead frames28H and28G, as viewed in the second direction Y. The primary-side circuit chip160Y is located between the lead frame28B and the lead frame28C, in the second direction Y.

The transformer chips190U to190W are each formed by encapsulating the transformer190with the encapsulating resin. In this embodiment, the transformer chips190U to190W each have, for example, a rectangular shape in a plan view. The transformer chips190U to190W are each larger in size in the second direction Y, than the primary-side circuit chip160Y. The transformer chips190U to190W are each smaller in size in the first direction X, than the primary-side circuit chip160Y. The transformer chips190U to190W are aligned in the first direction X, with a clearance between each other. In this embodiment, the transformer chip190V and the primary-side circuit chip160Y overlap with each other, as viewed in the second direction Y. The transformer chip190U is located on the side of the second edge34of the substrate30, with respect to the transformer chip190V. The transformer chip190W is located on the side of the first edge33of the substrate30, with respect to the transformer chip190V. The transformer chip190U is located on the side of the second edge34of the substrate30, with respect to the primary-side circuit chip160Y. The transformer chip190W is located on the side of the first edge33of the substrate30, with respect to the primary-side circuit chip160Y. The transformer chips190U to190W are located so as to overlap with the lead frame28B, as viewed in the first direction X.

The control chips47U to47W are each formed by encapsulating the secondary-side circuit170with the encapsulating resin. The control chips47U to47W are each located on the side of the third edge35of the substrate30, with respect to the transformer chips190U to190W. The control chips47U to47W are aligned in the first direction X, with a clearance between each other. In this embodiment, the center of the control chip47V in the first direction X accords with the center of the transformer chip190V in the first direction X. The control chip47U is located on the side of the second edge34of the substrate30in the first direction X, with respect to the control chip47V. The control chip47W is located on the side of the first edge33of the substrate30, with respect to the control chip47W. The control chip47U is located on the side of the first edge33of the substrate30in the first direction X, with respect to the semiconductor chip41X. In addition, the control chip47U is located so as to overlap with a portion of the semiconductor chip42X on the side of the second edge34with respect to the center of the semiconductor chip42X in the first direction X, as viewed in the second direction Y. The control chip47V is located on the side of the third edge35of the substrate30, with respect to the semiconductor chip43X. The control chip47V is located so as to overlap with the end portion of the semiconductor chip42X, on the side of the first edge33with respect to the center of the semiconductor chip42X in the first direction X, as viewed in the second direction Y. The control chip47V is located on the side of the first edge33of the substrate30in the first direction X, with respect to the second electrode GP of the semiconductor chip42X. The control chip47W is located so as to overlap with the second electrode GP of the semiconductor chip43X, as viewed in the second direction Y. The control chip47W is located on the side of the first edge33, with respect to the center of the semiconductor chip43X in the first direction X.

The diodes49U to49W are located in the region between the control chip47W and the control chip48, in the first direction X. The diodes49U to49W are each located on the side of the control chip48in the first direction X, with respect to the center of the region between the control chip47W and the control chip48in the first direction X. The diodes49U to49W are located so as to overlap with the island portion22aof the lead frame20B, as viewed in the second direction Y. The diodes49U and49W are aligned in the second direction Y with a clearance therebetween. The diodes49U and49W are located so as to overlap with each other, as viewed in the second direction Y. The diode49V is located on the side of the second edge34of the substrate30, with respect to the diodes49U and49W. The diodes49U and49W are located so as to overlap with a portion of the semiconductor chip44X on the side of the first edge33, with respect to the center of the semiconductor chip44X in the first direction X, as viewed in the second direction Y. More specifically, the diodes49U and49W are located on the side of the first edge33of the substrate30in the first direction X, with respect to the second electrode GP of the semiconductor chip44X. The diode49V is located so as to overlap with the second electrode GP of the semiconductor chip44X, as viewed in the second direction Y. The diode49V is located so as to overlap with the diode49U, as viewed in the first direction X. In the second direction Y, the diode49V is located on the side of the third edge35of the substrate30, with respect to the diode49W. The diodes49V and49W are located so as to overlap with the control chips47U to47W, as viewed in the first direction X. The diode49U is located on the side of the third edge35of the substrate30in the second direction Y, with respect to the control chips47U to47W. The diodes49U and49V are located so as to overlap with the control chip48, as viewed in the first direction X. The diode49W is located on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the control chip48.

The respective positions of the control chip48, the primary-side circuit chip160Y, and the transformer chip190Y with respect to the substrate30are the same as those of the control chip48, the primary-side circuit chip160Y, and the transformer chip190Y according to the eighth embodiment. However, the primary-side circuit chip160Y and the transformer chip190Y according to this embodiment are smaller in size in the first direction X, compared with the primary-side circuit chip160X and the transformer chip190X according to the eighth embodiment. The transformer chip1902is smaller in size in the first direction X, than the control chip48. The primary-side circuit chip160Y is smaller in size in the first direction X, than the transformer chip190Y.

The center of the primary-side circuit chip160Z in the second direction Y is located on the side of the third edge35of the substrate30, with respect to the center of the primary-side circuit chip160Y in the second direction Y. The primary-side circuit chip160Z is located so as to overlap with the transformer chips190U to190W, as viewed in the first direction X.

The transformer chip190Z is located on the side of the third edge35of the substrate30in the second direction Y, with respect to the transformer chips190U to190W. The transformer190Z is also located on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the control chips47U to47W. The transformer chip190Z is located on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the diodes49U and49V. The center of the transformer chip190Z in the second direction Y is located on the side of the fourth edge36in the second direction Y, with respect to the center of the diode49W in the second direction Y.

On the substrate30, a wiring pattern370is formed to connect the lead frames28A to28F and28I to28U and the primary-side circuit chips160I and160Z, the transformer chips190X and190U to190W, and the control chips47U to47W and48. For example, the conductive material MP is employed to form the wiring pattern370. The wiring pattern370is formed by sintering the conductive material MP. Examples of the material of the conductive material MP include silver (Ag), copper (Cu), and gold (Au). In this embodiment, the conductive material MP is formed of silver.

The wiring pattern370includes island portions371U,371V, and371W, an island portion372, an island portion373, and island portions374U,374V, and374W. The wiring pattern370also includes wirings375A to375S and an intermediary wiring376.

The island portions371U to371W are aligned in the first direction X with a clearance between each other. In this embodiment, the island portions371U to371W have the same shape. On the island portion371U, the control chip47U is mounted via the conductive material MP. On the island portion371V, the control chip47V is mounted via the conductive material MP. On the island portion371W, the control chip47W is mounted via the conductive material MP. The island portions371U to371W each include a land portion371a. The land portion371aincludes a first portion and a second portion, each of which will be described hereunder. The first portion is connected to the end portion of each of the island portions371U to371W, on the side of the first edge33. The first portion is connected to the end portion of each of the island portions371U to371W on the side of the third edge35. The first portion extends along the first direction X, from each of the island portions371U to371W toward the first edge33. The second portion extends along the second direction Y from the first portion toward the fourth edge36. The width of the second portion (thickness of the second portion in the first direction X) is wider than the width of the first portion (thickness of the first portion in the second direction Y).

The island portion372is similar to the island portion302according to the fourth embodiment. The island portions374U to374W are formed between the island portion372and the island portion371W in the first direction X. In this embodiment, the island portions374U to374W have the same shape. The island portions374U to374W are, for example, each formed in a quadrate (square) shape in a plan view. On the island portion374U, the diode49U is mounted via the conductive material MP. On the island portion374V, the diode49V is mounted via the conductive material MP. On the island portion374W, the diode49W is mounted via the conductive material MP. Examples of the material of the conductive material MP, employed to mount the control chips47U to47W and the diode49U to49W, include silver (Ag), copper (Cu), and gold (Au). In this embodiment, silver is employed to form the conductive material MP.

The intermediary wiring376is formed between the island portion374U and the island portion374W in the second direction Y. The intermediary wiring376is electrically connecting, for example, the control chip48and the diode49V. The intermediary wiring376includes a first land portion376a, a second land portion376b, and a connection wiring376cconnecting the first land portion376aand the second land portion376b. The intermediary wiring376is located so as to overlap with the island portion374V, as viewed in the first direction X. The first land portion376ais formed between the island portions374U,374W and the island portion372, in the first direction X. The second land portion376bis formed between the island portions374U,374W and the island portion374V, in the first direction X. The center of the second land portion376bin the first direction X is located on the side of the second edge34in the first direction X, with respect to the center of the region between the island portion374V and the island portion374U in the first direction X. The first land portion376aand the second land portion376bare located so as to overlap with the edge of the island portion374U on the side of the fourth edge36, as viewed in the first direction X.

The island portion373extends along the first direction X, through the region from the lead frame28G as far as the lead frame28R. On the island portion373, the primary-side circuit chips160Y and160Z, and the transformer chips190Y and190U to190W are mounted via the conductive material MP. The island portion373includes a first portion373awhere the primary-side circuit chip160Y and the transformer chip190Y are mounted, and a second portion373bextending along the first direction X, from the first portion373atoward the second edge34of the substrate30. In addition, the island portion373includes a cutaway portion373cand protruding portions373dand373e. Examples of the material of the conductive material MP, employed to mount the primary-side circuit chips160Y and160Z, and the transformer chips190Y and190U to190W, include silver (Ag), copper (Cu), and gold (Au). In this embodiment, silver is employed to form the conductive material MP.

The first portion373ais formed over a region between the lead frame28L and the lead frame28R, in the first direction X. The first portion373ais located on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the island portion372. The first portion373ais opposed to the island portion372, in the second direction Y. The first portion373ais larger in size in the first direction X, than the island portion372. In this embodiment, the edge of the first portion373aon the side of the second edge34of the substrate30in the first direction X accords with the edge of the island portion372on the side of the second edge34of the substrate30in the first direction X. The first portion373ais formed so as to overlap with the island portion374W and the island portions371U to371W, as viewed in the first direction X. More specifically, the edge of the first portion373aon the side of the third edge35in the second direction Y is located on the side of the fourth edge36, with respect to the center of the island portion374W in the second direction Y, and the center of the island portions371U to371W in the second direction Y, as viewed in the first direction X. Further, the first portion373ais formed so as to overlap with the respective bonding portions28aof the lead frames28A and28B, as viewed in the first direction X.

The protruding portion373dis formed at the end portion of the first portion373aon the side of the fourth edge36, so as to extend from the first portion373atoward the fourth edge36. The cutaway portion373cis formed in a portion of the island portion373on the side of the second edge34with respect to the protruding portion373d, at the position adjacent thereto. The cutaway portion373cis formed so as to stride over the boundary between the first portion373aand the second portion373b. The protruding portion373dis larger in size in the first direction X, than the primary-side circuit chip160Z. The protruding portion373dis smaller in size in the first direction X, than the transformer chip190Z.

The primary-side circuit chip160Z is mounted on the first portion373aand the protruding portion373d. More specifically, the edge of the primary-side circuit chip160Z on the side of the fourth edge36is located in the protruding portion373d. The edge of the primary-side circuit chip160Z on the side of the third edge35is located in the first portion373a. The transformer chip190Z is located in a region of the first portion373aon the side of the third edge35(on the side of the control chip48).

The second portion373bis formed over a region between the lead frame28G and the lead frame28L, in the first direction X. The second portion373bextends along the first direction X. The second portion373bis larger in size in the first direction X, than the first portion373a. However, the second portion373bis smaller in size in the second direction Y, than the first portion373a. The protruding portion373eis formed at the end portion of the second portion373bon the side of the second edge34, at the position corresponding, in this embodiment, to a portion of the second portion373boverlapping with the lead frames28G and28H, as viewed in the second direction Y. The protruding portion373eextends along the second direction Y, from the second portion373btoward the fourth edge36. The protruding portion373eis larger in size in the first direction X, than the primary-side circuit chip160Y. The protruding portion373eis located on the side of the second edge34of the substrate30in the first direction X, with respect to the transformer chip190W. The protruding portion373eis located so as to overlap with the transformer chip190V, as viewed in the second direction Y. The protruding portion373eis located so as to overlap with a portion of the transformer chip190U on the side of the first edge33, with respect to the center of the transformer chip190U in the first direction X, as viewed in the second direction Y.

The transformer chips190U to190W are mounted on the end portion of the second portion373bon the side of the second edge34in the second direction Y. In other words, the transformer chips190U to190W are each located on the side of the third edge35of the substrate30, with respect to the protruding portion373e. The primary-side circuit chip160Y is mounted on the second portion373band the protruding portion373e. More specifically, the edge of the primary-side circuit chip160Y on the side of the fourth edge36is located on the protruding portion373e.

The wirings375A to375S can be grouped into the wirings375A to375F and375Q to375S connected to the secondary-side circuit170, and the wirings375G to375P connected to the primary-side circuit160.

The wirings375A to375F are respectively connected to the lead frames28A to28F, via the bonding material SD9. The wirings375Q to375S are respectively connected to the lead frames28S to28U, via the bonding material SD9. More specifically, the wiring375Q is connected to the lead frame28S. The wiring375R is connected to the lead frame28T. The wiring375S is connected to the lead frame28U. The wirings375A to375F each include a first land portion375a, a second land portion375b, and a connection wiring375cconnecting the first land portion375aand the second land portion375b.

The wirings375A and375B are, for example, wiring patterns constituting the boot strap circuit including the diode49U. The wirings375C and375D are, for example, wiring patterns constituting the boot strap circuit including the diode49V. The wirings375E and375F are, for example, wiring patterns constituting the boot strap circuit including the diode49W. The respective first land portions375aof the wirings375A to375C are spaced apart from each other in the second direction Y. The first land portion375aof the wiring375C is located on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the first land portions375aof the wirings375A and375B. The first land portion375aof the wiring375B is located on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the first land portion375aof the wiring375A. The first land portions375aof the wirings375A to375C each have, for example, a rectangular shape in a plan view. In an example, the first land portions375aof the wirings375A to375C each have the long sides extending along the first direction X. Further, the first land portions375aof the wirings375A to375C are located on the side of the second edge34of the substrate30in the first direction X, with respect to the semiconductor chip41X. As indicated by a dash-dot auxiliary line drawn in the second direction Y from the island portion21aof the lead frame20A inFIG. 101, the first land portions375aof the wirings375A to375C are formed so as to overlap with the end portion of the island portion21aof the lead frame20A on the side of the second edge34, as viewed in the second direction Y.

The respective first land portions375aof the wirings375D to375F are located on the side of the fourth edge36of the substrate30in the second direction Y, with respect to the first land portion375aof the wiring375C. The first land portions375aof the wirings375D to375F are spaced apart from each other in the first direction X. These first land portions375aeach have a rectangular shape, with the long sides extending along the second direction Y.

The wiring375A is located closest to the second edge34of the substrate30in the first direction X, among the wirings375A to375F. The wiring375A is located closest to the third edge35of the substrate30in the second direction Y, among the wirings375A to375F. To the first land portion375aof the wiring375A, the bonding portion28aof the lead frame28A is connected. The second land portion375bof the wiring375A is located on the side of the third edge35of the substrate30in the second direction Y, with respect to the island portion371U. This second land portion375bis formed so as to overlap with a portion of the control chip47U on the side of the first edge33with respect to the center of the control chip47U in the first direction X, as viewed in the second direction Y. The connection wiring375cof the wiring375A is formed so as to secure a space for forming the connection wirings375cof the wirings375B to375F, between the lead frame28A and the island portion371U in the second direction Y. In addition, the connection wiring375cof the wiring375A is formed so as to secure a space for forming the connection wirings375cof the wirings375B to375F, between the island portion371U and the lead frame20A in the second direction Y. The connection wiring375cof the wiring375A includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion375atoward the third edge35. The second portion extends along the first direction X, from the first portion toward the first edge33. The second portion is connected to the second land portion375b.

The wiring375B is formed adjacent to the wiring375A, both in the first direction X and in the second direction Y. To the first land portion375aof the wiring375B, the bonding portion28aof the lead frame28B is connected. The second land portion375bof the wiring375B is located on the side of the third edge35of the substrate30in the second direction Y, with respect to the island portion371U. The second land portion375bof the wiring375B is located on the side of the first edge33of the substrate30in the first direction X, with respect to the second land portion375bof the wiring375A. The second land portion375bof the wiring375B is formed adjacent to the second land portion375bof the wiring375A, in the second direction Y. The second land portion375bof the wiring375B is located on the side of the first edge33of the substrate30in the first direction X, with respect to the control chip47U. The second land portion375bof the wiring375B is located so as to overlap with the land portion371aof the island portion371U, as viewed in the second direction Y. The connection wiring375cof the wiring375B is formed so as to secure a space for forming the respective connection wirings375cof the wirings375C to375F, between the lead frames28A,28B and the island portion371U in the first direction X. The connection wiring375cof the wiring375B is also formed so as to secure a space for forming the connection wirings375cof the wirings375C to375F, between the island portion371U and the lead frame20A in the second direction Y. Accordingly, the connection wiring375cof the wiring375B has a similar shape to that of the connection wiring375cof the wiring375A. The connection wiring375cof the wiring375B includes a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion375atoward the first edge33. The second portion extends along the second direction Y. The third portion is connecting the first portion and the second portion. The fourth portion extends along the second direction Y, from the second land portion375btoward the second edge34. The fifth portion is connecting the second portion and the fourth portion. The third portion and the fifth portion each extend obliquely, so as to be closer to the fourth edge36toward the second edge34of the substrate30.

The wiring375B further includes an extension wiring375d, extending from the second land portion375bof the wiring375B, to be connected to the island portion374U. The extension wiring375dextends along the first direction X from the second land portion375b. The extension wiring375dis connected to the end portion of the island portion374U on the side of the second edge34in the first direction X. Further, the extension wiring375dis connected to the end portion of the island portion374U on the side of the third edge35in the second direction Y.

The wiring375C is formed adjacent to the wiring375B on the opposite side of the wiring375A, both in the first direction X and in the second direction Y. To the first land portion375aof the wiring375C, the bonding portion28aof the lead frame28C is connected. The second land portion375bof the wiring375C is located on the side of the third edge35of the substrate30in the second direction Y, with respect to the island portion371V. The second land portion375bof the wiring375C is formed so as to overlap with a portion of the control chip47V on the side of the first edge33, with respect to the center of the control chip47V in the first direction X, as viewed in the second direction Y. The connection wiring375cof the wiring375C is formed so as to secure a space for forming the respective connection wirings375cof the wirings375D to375F, between the lead frames28A to28C and the island portion371U in the first direction X. The connection wiring375cof the wiring375C is also formed so as to secure a space for forming the connection wirings375cof the wirings375D to375F, between the island portions371U,371V and the lead frame20A in the second direction Y. Accordingly, the connection wiring375cof the wiring375C has a similar shape to that of the connection wiring375cof the wiring375B, connecting the first land portion357aand the second land portion375b. Making the fourth portion of the connection wiring375cof the wiring375C longer than that of the connection wiring375cof the wiring375B allows the connection wiring375cof the wiring375C to be located on the side of the first edge33of the substrate30, with respect to the connection wiring375cof the wiring375B.

The wiring375D is formed adjacent to the wiring375C on the opposite side of the wiring375B, both in the first direction X and in the second direction Y. To the first land portion375aof the wiring375D, the bonding portion28aof the lead frame28D is connected. This first land portion375ais formed so as to overlap with the respective first land portions375aof the wirings375A to375C, as viewed in the second direction Y. The second land portion375bof the wiring375D is located on the side of the third edge35of the substrate30in the second direction Y, with respect to the island portion371V. The second land portion375bof the wiring375D is located on the side of the first edge33of the substrate30in the first direction X, with respect to the second land portion375bof the wiring375C. The second land portion375bof the wiring375D is formed adjacent to the second land portion375bof the wiring375C, in the first direction X. The second land portion375bof the wiring375D is located so as to overlap with the second land portion375bof the wiring375C, as viewed in the second direction Y. The center of the second land portion375bof the of the wiring375D in the second direction Y is located on the side of the fourth edge36in the second direction Y, with respect to the center of the second land portion375bof the of the wiring375C in the second direction Y. The second land portion375bof the wiring375D is located on the side of the first edge33of the substrate30in the first direction X, with respect to the control chip47V. The second land portion375bof the wiring375D is formed so as to overlap with the land portion371aof the island portion371V, as viewed in the second direction Y. The connection wiring375cof the wiring375D is formed so as to secure a space for forming the respective connection wirings375cof the wirings375E and375F, between the lead frames28A to28C and the island portion371U in the first direction X. The connection wiring375cof the wiring375C is also formed so as to secure a space for forming the connection wirings375cof the wirings375E and375F, between the island portions371U,371V and the lead frame20A in the second direction Y. Accordingly, the connection wiring375cof the wiring375D has a similar shape to that of the connection wiring375cof the wiring375C. Making the fourth portion of the connection wiring375cof the wiring375D longer than that of the connection wiring375cof the wiring375C allows the connection wiring375cof the wiring375D to be located on the side of the first edge33of the substrate30, with respect to the connection wiring375cof the wiring375C.

The wiring375D also includes the extension wiring375d, like the wiring375B. The extension wiring375dis connecting the second land portion375bof the wiring375D and the island portion374V. The extension wiring375dis connected to the end portion of the island portion374V on the side of the second edge34of the substrate30, in the first direction X. The extension wiring375dis connected to the end portion of the island portion374V on the side of the third edge35of the substrate30, in the second direction Y. The extension wiring375dis formed on the side of the fourth edge36of the substrate30with respect to the extension wiring375dof the wiring375B, with a clearance therefrom.

The first land portion375aof the wiring375E is located on the side of the first edge33of the substrate30in the first direction X, with respect to the first portion of the connection wiring375cof the wiring375A to375D. To this first land portion375a, the bonding portion28aof the lead frame28E is connected. The second land portion375bof the wiring375E is located on the side of the third edge35of the substrate30in the second direction Y, with respect to the island portion371W. The second land portion375bof the wiring375E is located so as to overlap with a portion of the control chip47W on the side of the first edge33, with respect to the center of the control chip47W in the first direction X, as viewed in the second direction Y. The connection wiring375cof the wiring375E is formed so as to secure a space for forming the connection wiring375cof the wiring375F, between the lead frames28A to28C and the island portion371U in the first direction X. The connection wiring375cof the wiring375E is also formed so as to secure a space for forming the connection wiring375cof the wiring375F, between the island portions371U to371W and the lead frame20A in the second direction Y. The connection wiring375cof the wiring375E has a similar shape to that of the connection wiring375cof the wiring375A.

The first land portion375aof the wiring375F is formed so as to overlap with the island portion371U and the control chip47, as viewed in the second direction Y. More specifically, the first land portion375aof the wiring375F is located so as to overlap with a portion of the island portion371U on the side of the second edge34, with respect to the center of the island portion371U in the first direction X, as viewed in the second direction Y. The first land portion375aof the wiring375F is formed so as to overlap with a portion of the control chip47on the side of the second edge34, with respect to the center of the control chip47in the first direction X, as viewed in the second direction Y. The second land portion375bof the wiring375F is located on the side of the third edge35of the substrate30in the second direction Y, with respect to the island portion371W. The second land portion375bof the wiring375F is located on the side of the first edge33of the substrate30in the first direction X, with respect to the second land portion375bof the wiring375E. The second land portion375bof the wiring375F is located adjacent to the second land portion375bof the wiring375E, in the first direction X. The second land portion375bof the wiring375F is located on the side of the first edge33of the substrate30in the first direction X, with respect to the control chip47W. The second land portion375bof the wiring375F is located so as to overlap with the land portion371aof the island portion371W, as viewed in the second direction Y. The connection wiring375cof the wiring375F, connecting between the first land portion375aand the second land portion375b, includes a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion375atoward the third edge35. The second portion extends obliquely from the first portion, so as to be closer to the third edge35toward the second edge34of the substrate30, to be routed in the region on the side of the second edge34of the substrate30with respect to the island portion371U. The third portion extends along the second direction Y, from the second portion toward the third edge35. The fourth portion extends along the first direction X. The fourth portion is located on the side of the third edge35of the substrate30, with respect to the island portion371U. The fifth portion is connecting the third portion and the fourth portion. The fifth portion extends obliquely, so as to be closer to the third edge35toward the first edge33of the substrate30.

The wiring375F also includes the extension wiring375dconnecting the second land portion375bof the wiring375F and the island portion374W. The extension wiring375dincludes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the second land portion375bof the wiring375F toward the fourth edge36. The first portion is located on the side of the first edge33of the substrate30, with respect to the land portion371aof the island portion371U. The first portion is located adjacent to the land portion371aof the island portion371U, in the first direction X. The second portion extends along the first direction X. The second portion overlaps with the island portion374W, as viewed in the first direction X. The second portion is connected to the end portion of the island portion374W on the side of the second edge34of the substrate30, in the first direction X. The second portion is connected to the center of the island portion374W in the second direction Y. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the fourth edge36toward the first edge33of the substrate30.

The wirings375G to375P are each connected to the corresponding one of the lead frames28I to28R. More specifically, the wiring375G is connected to the lead frame28I. The wiring375H is connected to the lead frame28J. The wiring375I is connected to the lead frame28K. The wiring375J is connected to the lead frame28L. The wiring375K is connected to the lead frame28M. The wiring375L is connected to the lead frame28N. The wiring375M is connected to the lead frame28O. The wiring375N is connected to the lead frame28P. The wiring375O is connected to the lead frame28Q. The wiring375P is connected to the lead frame28R.

The wirings375G to375P are each formed in a region between the fourth edge36of the substrate30and the island portion373, in the second direction Y. The wirings375G to375O each include, like the wiring375A, the first land portion375a, the second land portion375b, and the connection wiring375c. The wiring375P includes the first land portion375aand the connection wiring375c. The respective first land portions375aof the wirings375G to375P are aligned in the first direction X, with a clearance between each other. These first land portion375aeach have a rectangular shape in a plan view. In an example, the first land portions375aof the wirings375G to375P each have the long sides extending along the second direction Y.

The wiring375G is the first signal pattern that transmits, for example, the control signal from the lead frame28I for the semiconductor chip41X, to the primary-side circuit chip160Z. The wiring375H is the first signal pattern that transmits, for example, the control signal from the lead frame28J for the semiconductor chip42X, to the primary-side circuit chip160Z. The wiring375I is the first signal pattern that transmits, for example, the control signal from the lead frame28K for the semiconductor chip43X, to the primary-side circuit chip160Z.

The respective second land portions375bof the wirings375G to375I are located between the lead frames28G and28H and the protruding portion373eformed in the island portion373, in the second direction Y. These second land portion375bare aligned in the first direction X, with a clearance between each other. These second land portion375bare aligned in the order of second land portion375bof the wiring375G, second land portion375bof the wiring375H, and second land portion375bof the wiring375I, from the side of the second edge34of the substrate30toward the first edge33. The second land portion375bof the wiring375G is the largest in size in the second direction Y, the second land portion375bof the wiring375H being the second largest, and the second land portion375bof the wiring375I being the smallest.

The respective second land portions375bof the wiring375G to375I are located so as to overlap with the primary-side circuit chip160Y, as viewed in the second direction Y. The second land portion375bof the wiring375H is located so as to overlap with the center of the primary-side circuit chip160Y in the first direction X, as viewed in the second direction Y. The second land portion375bof the wiring375G is formed so as to overlap with a portion of the primary-side circuit chip160Y on the side of the second edge34, with respect to the center of the primary-side circuit chip160Y in the first direction X, as viewed in the second direction Y. The second land portion375bof the wiring375I is formed so as to overlap with the end portion of the primary-side circuit chip160Y on the side of the first edge33, with respect to the center of the primary-side circuit chip160Y in the first direction X, as viewed in the second direction Y.

The respective connection wirings375cof the wirings375G to375I have a similar shape to each other. The connection wirings375cof the wirings375G to375I are formed adjacent to each other in the second direction Y. The connection wiring375cof the wiring375G is formed in a region on the side of the fourth edge36of the substrate30, with respect to the connection wiring375cof the wiring375H. The connection wiring375cof the wiring375I is formed in a region on the side of the third edge35of the substrate30, with respect to the connection wiring375cof the wiring375H.

The wiring375J is the power source pattern that supplies, for example, the source voltage VCC from the lead frame28L to each of the primary-side circuit chips160Y and160Z. The second land portion375bof the wiring375J is located in the cutaway portion373cof the island portion373. The connection wiring375cof the wiring375J extends along the second direction Y. This connection wiring375cis thicker than the respective connection wirings375cof the wirings375G to375P.

The wiring375J further includes a branch wiring375xand a second land portion375y. The branch wiring375xextends along the first direction X, from the end portion of the connection wiring375con the side of the third edge35(portion overlapping with the second land portion375bof the wiring375J, as viewed in the first direction X) toward the second edge34. The branch wiring375xis formed between the island portion373and the connection wiring375cof the wiring375I, in the second direction Y. The branch wiring375xis formed on the side of the island portion373in the second direction Y, with respect to the center of a region between the island portion373and the connection wiring375cof the wiring375I in the second direction Y. The branch wiring375xis thicker than the respective connection wirings375cof the wirings375G to375I. The branch wiring375xis finer than the connection wiring375cof the wiring375J. The second land portion375yis located on the side of the first edge33of the substrate30, with respect to the protruding portion373e. The second land portion375yis located so as to overlap with the protruding portion373e, as viewed in the first direction X. The second land portion375yis formed so as to overlap with the transformer chip190W, as viewed in the second direction Y.

The wiring375K is the second signal pattern that transmits, for example, the control signal from the lead frame28M for the semiconductor chip44X, to the primary-side circuit chip160Y′. The wiring375L is the second signal pattern that transmits, for example, the control signal from the lead frame28N for the semiconductor chip45X, to the primary-side circuit chip160Y. The wiring375M is the second signal pattern that transmits, for example, the control signal from the lead frame28O for the semiconductor chip46X, to the primary-side circuit chip160Y. The wiring375N is the signal pattern that transmits, for example, the fault detection signal FO from the lead frame28P, to the primary-side circuit chip160Y. The wiring375O is the signal pattern that transmits, for example, the temperature detection signal VOT from the lead frame28Q to the primary-side circuit chip160Y.

The respective second land portions375bof the wirings375K to375N are formed between the protruding portion373dof the island portion373and the respective bonding portions28aof the lead frames28M to28O, in the second direction Y. These second land portions375bare aligned in the first direction X, with a clearance between each other. These second land portions375bare aligned in the order of second land portion375bof the wiring375K, second land portion375bof the wiring375L, second land portion375bof the wiring375M, and second land portion375bof the wiring375N, from the side of the second edge34of the substrate30toward the first edge33. The second land portion375bof the wiring375K is located so as to overlap with a portion of the protruding portion373don the side of the second edge34, with respect to the center of the protruding portion373din the first direction X, as viewed in the second direction Y. The second land portion375bof the wiring375L is located so as to overlap with a portion of the protruding portion373don the side of the second edge34, with respect to the center of the protruding portion373din the first direction X, as viewed in the second direction Y. The second land portion375bof the wiring375L is located on the side of the first edge33of the substrate30in the first direction X, with respect to the second land portion375bof the wiring375K. The second land portion375bof the wiring375M is located so as to overlap with a portion of the protruding portion373don the side of the first edge33, with respect to the center of the protruding portion373din the first direction X, as viewed in the second direction Y. The second land portion375bof the wiring375N is located so as to overlap with a portion of the protruding portion373don the side of the first edge33, with respect to the center of the protruding portion373din the first direction X, as viewed in the second direction Y. The second land portion375bof the wiring375N is located on the side of the first edge33of the substrate30in the first direction X, with respect to the second land portion375bof the wiring375M.

The first land portion375aof the wiring375K is located so as to overlap with the second land portion375bof the wiring375K, as viewed in the second direction Y. The first land portion375aof the wiring375L is located so as to overlap with the second land portion375bof the wiring375K, as viewed in the second direction Y. The first land portion375aof the wiring375M is located so as to overlap with the second land portion375bof the wiring375M, as viewed in the second direction Y. The respective connection wirings375cof the wirings375K to375M extend along the second direction Y.

The first land portion375aof the wiring375N is located on the side of the first edge33of the substrate30in the first direction X, with respect to the second land portion375bof the wiring375N. The connection wiring375cof the wiring375N includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion375atoward the third edge35. The second portion extends along the first direction X, from the second land portion375btoward the first edge33. The third portion is connecting the first portion and the second portion. The third portion extends obliquely, so as to be closer to the fourth edge36toward the first edge33of the substrate30.

The second land portion375bof the wiring375O is located in the cutaway portion373cof the island portion373. This second land portion375bis located so as to overlap with the protruding portion373d, as viewed in the first direction X. The first land portion375aof the wiring375O is located on the side of the first edge33of the substrate30in the first direction X, with respect to the second land portion375bof the wiring375O. The connection wiring375cof the wiring375O has a similar shape to that of the connection wiring375eof the wiring375N.

The connection wiring375cof the wiring375P extends along the second direction Y, from the first land portion375aof the wiring375P toward the third edge35. The connection wiring375cof the wiring375P is connected to the end portion of the island portion373on the side of the first edge33in the first direction X. The connection wiring375cof the wiring375P is connected to the end portion of the first portion373aof the island portion373, on the side of the fourth edge36in the second direction Y. This connection wiring375cis thicker than the respective connection wirings375cof the wirings375K to375O.

The wirings375Q to375S are, for example, electrically connected to the control chip48. The wiring375Q is the signal pattern that supplies, for example, the detection voltage CIN from the lead frame28S to the control chip48. The wiring375R is the power source pattern that supplies, for example, the source voltage VCC to the control chip48. The wiring375S is, for example, the ground pattern connected to the island portion372.

The respective first land portions375aof the wirings375Q to375S are aligned in the second direction Y, with a clearance between each other. These first land portions375ahave, for example, a rectangular shape in a plan view. In an example, the first land portions375aof the wirings375Q to375S each have the long sides extending along the first direction X. These first land portions375aare aligned in the order of first land portion375aof the wiring375Q, first land portion375aof the wiring375R, and first land portion375aof the wiring375S, from the side of the fourth edge36of the substrate30, toward the third edge35.

The respective second land portions375bof the wirings375Q and375R are located on the side of the first edge33of the substrate30, with respect to the island portion372. The second land portions375bof the wirings375Q and375R are aligned in the second direction Y, with a clearance therebetween. These second land portions375bare formed so as to overlap with the island portion372, as viewed in the first direction X.

The respective connection wirings375cof the wirings375Q and375R have a similar shape to each other. These connection wirings375cinclude a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, each of which will be described hereunder. The first portion extends along the first direction X, from the first land portion375atoward the second edge34. The second portion extends along the first direction X, from the second land portion375btoward the first edge33. The third portion extends along the second direction Y. The fourth portion is connecting an end of the third portion and the first portion. The fifth portion is connecting the other end of the third portion and the second portion. The fourth portion and the fifth portion each extend obliquely, so as to be closer to the fourth edge36, toward the first edge33of the substrate30.

The connection wiring375cof the wiring375S is formed so as to surround the connection wirings375cof the wirings375Q and375R, from the side of the first edge33and the side of the third edge35. The connection wiring375cof the wiring375S is located on the side of the third edge35of the substrate30, with respect to the second land portions375bof the wirings375Q and375R. The connection wiring375cof the wiring375S is connected to the end portion of the island portion372on the side of the first edge33, in the first direction X. The connection wiring375cof the wiring375S is connected to the end portion of the island portion372on the side of the third edge35, in the second direction Y. The connection wiring375cof the wiring375S is thicker than the connection wirings375cof the wirings375Q and375R. The connection wiring375cof the wiring375S is finer than the connection wiring375cof the wiring375J.

As shown inFIG. 103, the primary-side circuit chip160Y is connected to the respective second land portions375bof the wirings375G to375I, via wires380A to380C. A first end portion of the wire380A is connected to the second land portion375bof the wiring375G. A second end portion of the wire380A is connected to the end portion of the primary-side circuit chip160Y on the side of the fourth edge36, in the second direction Y. The second end portion of the wire380A is connected to a position on the primary-side circuit chip160Y on the side of the second edge34in the first direction X, with respect to the center of the primary-side circuit chip160Y in the first direction X. A first end portion of the wire3803is connected to the second land portion375bof the wiring375H. A second end portion of the wire380B is connected to the end portion of the primary-side circuit chip160Y on the side of the fourth edge36, in the second direction Y. The second end portion of the wire380A is connected to the center of the primary-side circuit chip160Y in the first direction X. A first end portion of the wire380C is connected to the second land portion375bof the wiring375I. A second end portion of the wire380C is connected to the end portion of the primary-side circuit chip160Y on the side of the fourth edge36, in the second direction Y. The second end portion of the wire380C is connected to a position on the primary-side circuit chip160Y on the side of the first edge33in the first direction X, with respect to the center of the primary-side circuit chip160Y in the first direction X.

The primary-side circuit chip160Y is connected to the second land portion375yof the wiring375J, via three wires380D. A first end portion of the wire380D is connected to the second land portion375yof the wiring375J. A second end portion of the wire380D is connected to the end portion of the primary-side circuit chip160Y on the side of the first edge33, in the first direction X.

The primary-side circuit chip160Y and the transformer chips190U to190W are connected via wires381A to381C. Respective first end portions of three wires381A are connected to the end portion of the primary-side circuit chip160Y on the side of the third edge35, in the second direction Y.

The first end portions of the three wires381A are each connected to a position on the primary-side circuit chip160Y on the side of the second edge34in the first direction X, with respect to the center of the primary-side circuit chip160Y in the first direction X. Respective second end portions of the three wires381A are connected to the end portion of the transformer chip190U on the side of the fourth edge36, in the second direction Y. The second end portions of the three wires381A are connected to the center of the transformer chip190U in the first direction X.

Respective first end portions of three wires381B are connected to the end portion of the primary-side circuit chip160Y on the side of the third edge35, in the second direction Y. The first end portions of the three wires381B are connected to the center of the primary-side circuit chip160Y in the first direction X. Respective second end portions of the three wires381B are connected to the end portion of the transformer chip190V on the side of the fourth edge36, in the second direction Y. The second end portions of the three wires381B are connected to the center of the transformer chip190V in the first direction X.

Respective first end portions of three wires381C are connected to the end portion of the primary-side circuit chip160Y on the side of the third edge35, in the second direction Y. The first end portions of the three wires381B are each connected to a position on the primary-side circuit chip160Y on the side of the first edge33, with respect to the center of the primary-side circuit chip160Y in the first direction X. Respective second end portions of the three wires381C are connected to the end portion of the transformer chip190W on the side of the fourth edge36, in the second direction Y. The second end portions of the three wires381C are connected to the center of the transformer chip190W in the first direction X.

The transformer chip190U and the control chip47U are connected via three wires382A. The transformer chip190V and the control chip47V are connected via three wires382B. The transformer chip190W and the control chip47W are connected via three wires382C.

Respective first end portions of the three wires382A are connected to a position on the transformer chip190U on the side of the third edge35in the second direction Y, with respect to the center of the transformer chip190U in the second direction Y. The first end portions of the three wires382A are each connected to the center of the transformer chip190U in the first direction X. Respective second end portions of the three wires382A are connected to the end portion of the control chip47U on the side of the fourth edge36, in the second direction Y. The second end portions of the three wires382A are each connected to a position on the control chip47U on the side of the first edge33in the first direction X, with respect to the center of the control chip47U in the first direction X.

Respective first end portions of the three wires382B are connected to a position on the transformer chip190V on the side of the third edge35in the second direction Y, with respect to the center of the transformer chip190V in the second direction Y. The first end portions of the three wires382B are each connected to the center of the transformer chip190V in the first direction X. Respective second end portions of the three wires382B are connected to the end portion of the control chip47V on the side of the fourth edge36, in the second direction Y. The second end portions of the three wires382B are each connected to a position on the control chip47V on the side of the first edge33in the first direction X, with respect to the center of the control chip47V in the first direction X.

Respective first end portions of the three wires382C are connected to a position on the transformer chip190W on the side of the third edge35in the second direction Y, with respect to the center of the transformer chip190W in the second direction Y. The first end portions of the three wires382C are each connected to the center of the transformer chip190W in the first direction X. Respective second end portions of the three wires382C are connected to the end portion of the control chip47W on the side of the fourth edge36, in the second direction Y. The second end portions of the three wires382C are each connected to a position on the control chip47W on the side of the first edge33in the first direction X, with respect to the center of the control chip47W in the first direction X.

The control chips47U to47W are connected to the semiconductor chips41X to43X, the wirings375A to375F, and the land portion371a, via wires383A to383L. To the control chip47U, the wires383A to383D are connected. Two wires383A are connecting the control chip47U, and the second electrode GP and first electrode SP of the semiconductor chip41X. Respective first end portions of two wires383A are connected to the end portion of the control chip47U on the side of the third edge35of the substrate30, in the second direction Y. The first end portions of the two wires383A are connected to the end portion of the control chip47U on the side of the second edge34in the first direction X, with respect to the center of the control chip47U in the first direction X. The first end portions of the two wires383A are spaced apart from each other in the first direction X. A second end portion of one of the wires383A is connected to the second electrode GP of the semiconductor chip41X. A second end portion of the other wire383A is connected to a position on the first electrode SP of the semiconductor chip41X, on the side of the first edge33of the substrate30in the first direction X, with respect to the second electrode GP.

A first end portion of the wire383B is connected to the end portion of the control chip47U on the side of the third edge35, in the second direction Y. The first end portion of the wire383B is connected to a position on the control chip47U on the side of the first edge33in the first direction X, with respect to the center of the control chip47U in the first direction X. A second end portion of the wire383B is connected to the second land portion375bof the wiring375A.

Respective first end portions of two wires383C are connected to the end portion of the control chip47U on the side of the third edge35of the substrate30, in the second direction Y. The first end portions of the two wires383C are connected to the end portion of the control chip47U on the side of the first edge33in the first direction X, with respect to the center of the control chip47U in the first direction X. The first end portions of the two wires383C are spaced apart from each other in the first direction X. The first end portions of the two wires383C are each located at a position on the control chip47U on the side of the first edge33, with respect to the first end portion of the wire383B. Respective second end portions of the two wires383C are connected to the second land portion375bof the wiring375B.

Respective first end portions of two wires383D are connected to the end portion of the control chip47U on the side of the first edge33, in the first direction X. The first end portions of the two wires383D are each connected to a position on the control chip47U on the side of the third edge35in the second direction Y, with respect to the center of the control chip47U in the second direction Y. The first end portions of the two wires383D are spaced apart from each other in the second direction Y. Respective second end portions of the two wires383D are connected to the land portion371aof the island portion371U.

To the control chip47V, the wires383E to383H are connected. Two wires383E are connecting the control chip47V, and the second electrode GP and first electrode SP of the semiconductor chip42X. Respective first end portions of two wires383E are connected to the end portion of the control chip47V on the side of the third edge35, in the second direction Y. The first end portions of the two wires383E are each connected to a position on the control chip47V on the side of the second edge34in the first direction X, with respect to the center of the control chip47V in the first direction X. The first end portions of the two wires383E are spaced apart from each other in the first direction X. A second end portion of one of the wires383E is connected to the second electrode GP of the semiconductor chip42X. A second end portion of the other wire383E is connected to a position on the first electrode SP of the semiconductor chip42X, on the side of the first edge33in the first direction X, with respect to the second electrode GP.

A first end portion of the wire383F is connected to the end portion of the control chip47V on the side of the third edge35, in the second direction Y. The first end portion of the wire383F is connected to a position on the control chip47V on the side of the first edge33in the first direction X, with respect to the center of the control chip47V in the first direction X. A second end portion of the wire383F is connected to the second land portion375bof the wiring375C.

Respective first end portions of two wires383G are connected to the end portion of the control chip47V on the side of the third edge35, in the second direction Y. The first end portions of the two wires383G are each connected to a position on the control chip47V on the side of the first edge33in the first direction X, with respect to the center of the control chip47V in the first direction X. The first end portions of the two wires383G are spaced apart from each other in the first direction X. The first end portions of the two wires383G are each located at a position on the control chip47V on the side of the first edge33, with respect to the first end portion of the wire383F. Respective second end portions of the two wires383G are connected to the second land portion375bof the wiring375D.

Respective first end portions of two wires383H are connected to the end portion of the control chip47V on the side of the first edge33, in the first direction X. The first end portions of the two wires383H are each connected to a position on the control chip47V on the side of the third edge35in the second direction Y, with respect to the center of the control chip47V in the second direction Y. Respective second end portions of the two wires383H are connected to the land portion371aof the island portion371V.

To the control chip47W, the wires383I to383L are connected. Two wires383I are connecting the control chip47W, and the second electrode GP and first electrode SP of the semiconductor chip43X. Respective first end portions of two wires383I are connected to the end portion of the control chip47W on the side of the third edge35, in the second direction Y. The first end portions of the two wires383I are each connected to a position on the control chip47W on the side of the second edge34in the first direction X, with respect to the center of the control chip47W in the first direction X. The first end portions of the two wires383I are spaced apart from each other in the first direction X. A second end portion of one of the wires383I is connected to the second electrode GP of the semiconductor chip43X. A second end portion of the other wire383I is connected to a position on the first electrode SP of the semiconductor chip43X, on the side of the first edge33in the first direction X, with respect to the second electrode GP.

A first end portion of the wire383J is connected to the end portion of the control chip47W on the side of the third edge35, in the second direction Y. The first end portion of the wire383J is connected to a position on the control chip47W on the side of the first edge33in the first direction X, with respect to the center of the control chip47W in the first direction X. A second end portion of the wire383J is connected to the second land portion375bof the wiring375E.

Respective first end portions of two wires383K are connected to the end portion of the control chip47W on the side of the third edge35, in the second direction Y. The first end portions of the two wires383K are each connected to a position on the control chip47W on the side of the first edge33in the first direction X, with respect to the center of the control chip47W in the first direction X. The first end portions of the two wires383K are spaced apart from each other in the first direction X. The first end portions of the two wires383K are each located at a position on the control chip47W on the side of the first edge33, with respect to the first end portion of the wire383J. Respective second end portions of the two wires383K are connected to the second land portion375bof the wiring375F.

Respective first end portions of two wires383L are connected to the end portion of the control chip47W on the side of the first edge33, in the first direction X. The first end portions of the two wires383L are each connected to a position on the control chip47W on the side of the third edge35in the second direction Y, with respect to the center of the control chip47W in the second direction Y. Respective second end portions of the two wires383L are connected to the land portion371aof the island portion371W.

As shown inFIG. 104, the primary-side circuit chip160Z is connected to the respective second land portions375bof the wirings375L to375O, and the island portion373, via wires384A to384G.

Respective first end portions of two wires384A are connected to the end portion of the primary-side circuit chip160Z on the side of the second edge34, in the first direction X. The first end portions of the two wires384A are each located at a position on the primary-side circuit chip160Z on the side of the fourth edge36in the second direction Y, with respect to the center of the primary-side circuit chip160Z in the second direction Y. Respective second end portions of the two wires384A are connected to the second land portion375bof the wiring375L.

A first end portion of the wire384B is connected to the end portion of the primary-side circuit chip160Z on the side of the fourth edge36, in the second direction Y. The first end portion of the wire384B is connected to a position on the primary-side circuit chip160Z on the side of the second edge34in the first direction X, with respect to the center of the primary-side circuit chip160Z in the first direction X. A second end portion of the wire384B is connected to the second land portion375bof the wiring375K. The second end portion of the wire384B is connected to a position on the second land portion375bof the wiring375K on the side of the first edge33in the first direction X, with respect to the center of the second land portion375bin the first direction X.

A first end portion of the wire384C is connected to the end portion of the primary-side circuit chip160Z on the side of the fourth edge36, in the second direction Y. The first end portion of the wire384C is connected to a position on the primary-side circuit chip160Z on the side of the second edge34in the first direction X, with respect to the center of the primary-side circuit chip160Z in the first direction X. The first end portion of the wire384C is located at a position on the primary-side circuit chip160Z on the side of the first edge33, with respect to the first end portion of the wire384B. A second end portion of the wire384C is connected to the second land portion375bof the wiring375L. The second end portion of the wire384C is connected to a position on the second land portion375bof the wiring375L on the side of the first edge33in the first direction X, with respect to the center of the second land portion375bin the first direction X.

A first end portion of the wire384D is connected to the end portion of the primary-side circuit chip160Z on the side of the fourth edge36, in the second direction Y. The first end portion of the wire384D is connected to a position on the primary-side circuit chip160Z on the side of the first edge33in the first direction X, with respect to the center of the primary-side circuit chip160Z in the first direction X. A second end portion of the wire384D is connected to the second land portion375bof the wiring375M.

A first end portion of the wire384E is connected to the end portion of the primary-side circuit chip160Z on the side of the fourth edge36, in the second direction Y. The first end portion of the wire384E is connected to a position on the primary-side circuit chip160Z on the side of the first edge33in the first direction X, with respect to the center of the primary-side circuit chip160Z in the first direction X. The first end portion of the wire384E is located at a position on the primary-side circuit chip160Z on the side of the first edge33, with respect to the first end portion of the wire384D. A second end portion of the wire384E is connected to the second land portion375bof the wiring375N.

A first end portion of the wire384F is connected to the end portion of the primary-side circuit chip160Z on the side of the first edge33, in the first direction X. The first end portion of the wire384F is located at a position on the primary-side circuit chip160Z on the side of the fourth edge36in the second direction Y, with respect to the center of the primary-side circuit chip160Z in the second direction Y. A second end portions of the wire384F is connected to the second land portion375bof the wiring375O.

Respective first end portions of two wires384G are connected to the end portion of the primary-side circuit chip160Z on the side of the first edge33, in the first direction X. The first end portions of the two wires384G are each connected to a position on the primary-side circuit chip160Z on the side of the fourth edge36in the second direction Y, with respect to the center of the primary-side circuit chip160Z in the second direction Y. Respective second end portions of the two wires384G are connected to the first portion373aof the island portion373. The second end portions of the two wires384G are each located on the side of the second edge34of the substrate30in the first direction X, with respect to the second land portion375bof the wiring375O.

The primary-side circuit chip160Y is connected to the transformer chip190Y, via a plurality of wires385. The transformer chip190Y is connected to the control chip48, via a plurality of wires386. Respective first end portions of the plurality of wires385are connected to the end portion of the primary-side circuit chip160Y, on the side of the third edge35in the second direction Y. The first end portions of the plurality of wires385are spaced apart from each other, in the first direction X. Respective second end portions of the plurality of wires385are connected to the end portion of the transformer chip190Y on the side of the fourth edge36, in the second direction Y. The second end portions of the plurality of wires385are spaced apart from each other, in the first direction X. Respective first end portions of the plurality of wires386are connected to a position on the transformer chip190Y on the side of the third edge35in the second direction1, with respect to the center of the transformer chip190Y in the second direction Y. The first end portions of the plurality of wires386are spaced apart from each other, in the first direction X. Respective second end portions of the plurality of wires386are connected to the end portion of the control chip48on the side of the fourth edge36, in the second direction Y. The second end portions of the plurality of wires386are spaced apart from each other, in the first direction X. The plurality of wires386are longer than the plurality of wires385.

To the control chip48, wires387A to387I are connected. A first end portion of the wire387A is connected to the end portion of the control chip48on the side of the third edge35, in the second direction Y. The first end portion of the wire387A is connected to a position on the control chip48on the side of the second edge34in the first direction X, with respect to the center of the control chip48in the first direction X. A second end portion of the wire387A is connected to the second electrode GP of the semiconductor chip44X.

A first end portion of the wire387B is connected to the end portion of the control chip48on the side of the third edge35, in the second direction Y. The first end portion of the wire387B is connected to the center of the control chip48in the first direction X. A second end portion of the wire387B is connected to the second electrode GP of the semiconductor chip45X.

A first end portion of the wire387C is connected to the end portion of the control chip48on the side of the third edge35, in the second direction Y. The first end portion of the wire387C is connected to a position on the control chip48on the side of the first edge33in the first direction X, with respect to the center of the control chip48in the first direction X. A second end portion of the wire387C is connected to the second electrode GP of the semiconductor chip46X.

Respective first end portions of the wires387D to387F are connected to the end portion of the control chip48on the side of the second edge34, in the first direction X. The first end portions of the wires387D to387F are spaced apart from each other, in the second direction Y. The first end portion of the wire387D is located at a position on the control chip48on the side of the third edge35in the second direction Y, with respect to the center of the control chip48in the second direction Y. The first end portion of the wire387E is located at the center of the control chip48in the second direction Y. The first end portion of the wire387F is located at a position on the control chip48on the side of the fourth edge36in the second direction Y, with respect to the center of the control chip48in the second direction Y. A second end portion of the wire387D is connected to the diode49U. A second end portion of the wire387F is connected to the diode49W. A second end portion of the wire387E is connected to the first land portion376aof the intermediary wiring376. The second land portion376bof the intermediary wiring376and the diode49V are connected via a wire388. A first end portion of the wire388is connected to the second land portion376bof the intermediary wiring376. A second end portion of the wire388is connected to the diode49V.

A first end portion of the wire387G is connected to the end portion of the control chip48on the side of the first edge33, in the first direction X. The first end portion of the wire387G is connected to a position on the control chip48on the side of the fourth edge36in the first direction X, with respect to the center of the control chip48in the second direction Y. A second end portion of the wire387G is connected to the second land portion375bof the wiring375Q.

Respective first end portions of two wires387H are connected to the end portion of the control chip48on the side of the first edge33, in the first direction X. The first end portions of the two wires387H are spaced apart from each other, in the second direction Y. The first end portion of one of the wires387H is located at the center of the control chip48in the second direction Y. The first end portion of the other wire387H is located at a position on the control chip48on the side of the third edge35in the second direction Y, with respect to the center of the control chip48in the second direction Y. Respective second end portions of the two wires387H are connected to the second land portion375bof the wiring375R.

Respective first end portions of two wires387I are connected to the end portion of the control chip48on the side of the first edge33, in the first direction X. The first end portions of the two wires387I are each connected to a position on the control chip48on the side of the third edge35in the second direction Y, with respect to the center of the control chip48in the second direction Y. The first end portions of the two wires387I are spaced apart from each other, in the second direction Y. Respective second end portions of the two wires387I are connected to the island portion372. The second end portions of the two wires387I are each connected to a position on the island portion372between the edge thereof on the side of the first edge33and the control chip48, in the first direction X. The second end portions of the two wires387I are spaced apart from each other, in the second direction Y.

The description of the foregoing embodiments represents examples of the semiconductor package and the manufacturing method thereof according to the present disclosure, with no limitation whatsoever. The semiconductor package and the manufacturing method thereof according to the present disclosure may be configured, without limitation to the foregoing embodiments, through a combination of at least two of the following variations, unless contradiction is incurred. In the description of the following variations, the elements that are common to the foregoing embodiments will be given the same numeral, and the description thereof will not be repeated.

In the tenth embodiment, the thickness of the connection wiring305may be modified as desired. In an example, the connection wiring305may be made thicker as shown inFIG. 105, compared with the connection wiring305according to the tenth embodiment (seeFIG. 90). In this case, the clearance between the connection wiring305and the island portion303in the second direction Y is narrowed. In an example, the thickness WC of the connection wiring305may be larger than the distance DCS between the connection wiring305and the island portion303in the second direction Y, as shown inFIG. 106.

In addition, as shown inFIG. 105, connection wiring305may be formed so as to protrude toward the second region30A, from the island portion301. The connection wiring305may also be formed so as to protrude toward the second region30A, from the island portion302. The shape of the connection wiring305may be modified as desired, without limitation to the linear shape extending along the first direction X. In an example, a portion of the connection wiring305on the side of the island portion302may be formed farther away from the second region30A in the second direction Y, compared with the connection wiring305shown inFIG. 105andFIG. 106, so as to keep the portion of the connection wiring305on the side of the island portion302from protruding toward the island portion302in the second direction Y.

In the tenth embodiment, the position of the control chip47on the island portion301may be modified as desired. In an example, as shown inFIG. 107, the control chip47may be located in a region of the island portion301on the side of the lead frame20A, in the second direction Y. More specifically, the control chip47may be located on the side of the lead frame20A, with respect to the intermediary chip310. In this case, the control chip47is located closer to the semiconductor chips41X to43X, compared with the configuration according to the tenth embodiment, and therefore the wires311A to311C connecting the control chip47and the semiconductor chips41X to43X can each be shortened. Here, the position of the control chip47in the second direction Y and the position of the control chip48in the second direction Y (seeFIG. 90) may be the same as each other. In addition, the position of the control chip47may also be modified, in the variation shown inFIG. 65.

Further, the positions of the wirings307A to307C in the second direction Y may be shifted toward the lead frame20A. In an example, the edge of the second land portion308bwiring307A on the side of the lead frame20A may be located at the same position as the edge of the island portion301on the side of the lead frame20A, in the second direction Y. In this case, the wires311J,311G, and311K can be shortened. In addition, a portion of the island portion301overlapping, as viewed in the second direction Y, with the second land portions308bof the wirings307D to307F, may be cut away, so as to allow the second land portions308bof the wirings307D to307F to be shifted toward the lead frame20A, in the second direction Y. In this case, the second land portions308bof the wirings307D to307F, as well as the diodes49V and49W, are brought closer to the control chip47, and therefore the wires311H,311E,311L,311I, and311F can be shortened.

In the tenth embodiment, the position of the intermediary chip310on the island portion301may be modified as desired. In an example, the intermediary chip310may be located in a region of the island portion301on the side of the lead frame20A, in the second direction Y. Here, the position of the intermediary chip310may also be modified, in the variation shown inFIG. 65.

In the first to fourth, and the seventh to ninth embodiments, the number of control chips47and the number of control chips48may each be modified as desired. In an example, the semiconductor package1may include three control chips48U,48V,48W, as shown inFIG. 108. The three control chips48are aligned in the first direction X, with a clearance between each other. The respective positions of the three control chips48in the second direction Y are equal to each other. Accordingly, the island portion202is longer in the first direction X, than the island portions52,202, and302according to the eighth to tenth, and the eleventh to thirteenth embodiments. InFIG. 108, the end portion of the island portion202on the side of the first edge33overlaps with the semiconductor chip46X, as viewed in the second direction Y. The end portion of the island portion202on the side of the second edge34overlaps with the semiconductor chip44X, as viewed in the second direction Y.

The control chip48U is located at the end portion of the island portion202on the side of the second edge34, in the first direction X. The control chip48V is located at the center of the island portion202in the first direction X. The control chip48W is located at the end portion of the island portion202on the side of the first edge33, in the first direction X. More specifically, the control chip48U is located between the semiconductor chip44X and the semiconductor chip45X, in the first direction X. The control chip48U is located on the side of the semiconductor chip44X in the first direction X, with respect to the center of the region between the semiconductor chip44X and the semiconductor chip45X in the first direction X. The control chip48V is located so as to overlap with the semiconductor chip45X, as viewed in the second direction Y. The control chip48W is located between the semiconductor chip45X and the semiconductor chip46X, in the first direction X. The control chip48W is located on the side of the semiconductor chip46X in the first direction X, with respect to the center of the region between the semiconductor chip45X and the semiconductor chip46X in the first direction X. The control chips48U,48V, and48W are electrically connected to each other. In an example, the control chip48V is connected to the control chip48U via the wire209L. The control chip48U is connected to the intermediary wirings207A to207C, via the wires209G,209H, and209I. The control chip48U is connected to the island portion202via the wire209N. The control chip48V is connected to the island portion202via the wire209O.

The control chips48U,48V, and48W are each electrically connected to the transformer chip190X, via the wire212. As shown inFIG. 108, the transformer chip190X is longer in the first direction X, than the transformer chips190X and190Z according to the eighth to tenth, and the eleventh to thirteenth embodiments. The transformer chip190X shown inFIG. 108is located such that the end portion thereof on the side of the first edge33is located on the side of the first edge33of the substrate30in the first direction X, with respect to the semiconductor chip46X. The transformer chip190X is located such that the end portion thereof on the side of the second edge34is located on the side of the second edge34of the substrate30in the first direction X, with respect to the semiconductor chip44X. Here, the end portion of the transformer chip190X on the side of the first edge33may be located on the side of the second edge34of the substrate30in the first direction X, with respect to the semiconductor chip46X. In addition, the end portion of the transformer chip190X on the side of the second edge34may be located on the side of the first edge33of the substrate30in the first direction X, with respect to the semiconductor chip44X.

The mentioned configuration allows the control chip48U to be located closer to the semiconductor chip44X, to thereby shorten the wire209A connecting the control chip48U and the semiconductor chip44X. Further, the control chip48W can be located closer to the semiconductor chip46X, and therefore the wire209C connecting the control chip48W and the semiconductor chip46X can be shortened.

In the eighth and eleventh embodiments, the shape of the intermediary wirings207A to207C may be modified as desired. In an example, as shown inFIG. 109toFIG. 111, the length of at least one of the intermediary wirings207A to207C in the first direction X may be different. More specifically, as shown inFIG. 109, the intermediary wiring207A may be shorter in the first direction X, than the intermediary wirings207B and207C. The intermediary wiring207B may be shorter in the first direction X, than the intermediary wiring207C. The end portions of the intermediary wiring207B in the first direction X may be located so as to overlap with the end portions of the intermediary wirings207A and207C in the first direction X, as viewed in the first direction X. In this case, the distance between the intermediary wiring207A and the intermediary wiring207C in the second direction Y can be shortened. As shown inFIG. 110, the intermediary wiring207B may be shorter in the first direction X, than the intermediary wirings207A and207C. The intermediary wiring207A and the intermediary wiring207C may have the same length in the first direction X. The end portions of the intermediary wiring207B in the first direction X may be located so as to overlap with the end portions of the intermediary wirings207A and207C in the first direction X, as viewed in the first direction X. In this case, the distance between the intermediary wiring207A and the intermediary wiring207C in the second direction Y can be shortened. As shown inFIG. 111, the intermediary wiring207A is longer in the first direction X, than the intermediary wirings207B and207C. The intermediary wiring207B may be longer in the first direction X, than the intermediary wiring207C. The end portions of the intermediary wiring207B in the first direction X may be located so as to overlap with the end portions of the intermediary wirings207A and207C in the first direction X, as viewed in the first direction X. In this case, the distance between the intermediary wiring207A and the intermediary wiring207C in the second direction Y can be shortened.

In the foregoing embodiments, the lead frames located in the first region303are connected to the end portions of the substrate30on the sides of the first edge33, the second edge34, and the fourth edge36. However, the arrangement of the lead frames located in the first region308is not limited to the above. For example, a part of the wirings formed in the first region30B may be substituted with the lead frame. In an example, at least one of the island portions201,202,301, and302, and the connection wirings204and305may be constituted of the lead frame. In addition, the island portion203or303may be constituted of the lead frame.

In the tenth embodiment, the positional arrangement of the control chip48, the primary-side circuit chip160Z, and the transformer chip190Z may be modified as desired. In an example, as shown inFIG. 112, the control chip48, the primary-side circuit chip160Z, and the transformer chip190Z may be aligned in the first direction X. In this case, the control chip48is located such that the long sides thereof extend along the second direction Y. The primary-side circuit chip160Z is located such that the long sides thereof extend along the second direction Y. The transformer chip190Z is located such that the long sides thereof extend along the second direction Y. The primary-side circuit chip160Z is located on the side of the second edge34of the substrate30in the first direction X, with respect to the control chip48and the transformer chip190Z. The control chip48is located on the side of the first edge33of the substrate30, with respect to the transformer chip190Z. In addition, the island portion302and the island portion303are aligned in the first direction X. The island portion302and the island portion303each have, for example, a rectangular shape in a plan view. In an example, the island portion302and the island portion303each have the long sides extending along the second direction Y. The island portion304overlaps with the lead frames28N and28O, as viewed in the second direction Y. The primary-side circuit chip160Z is located so as to overlap with the lead frame28N, as viewed in the second direction Y. The transformer chip190Z is located so as to overlap with the lead frame28O. The island portion302and the control chip48are located so as to overlap with the lead frames28P and28Q, as viewed in the second direction Y.

The respective second land portions308bof the wirings307L to307Q are located on the side of the second edge34of the substrate30, with respect to the island portion302. The second land portions308bof the wirings307L to307Q are located adjacent to the island portion302, in the second direction Y. The second land portions308bof the wirings307L to307Q overlap with the island portion302, as viewed in the first direction X. The second land portions308bof the wirings307L to307P overlap with the primary-side circuit chip160Z, as viewed in the first direction X. The second land portion308bof the wiring307Q is located on the side of the fourth edge36of the substrate30, with respect to the primary-side circuit chip160Z. The second land portion308xof the wiring307L, the second land portion308bof the wiring307M, the second land portion308bof the wiring307N, the second land portion308bof the wiring307O, the second land portion308bof the wiring307P, and the second land portion308bof the wiring307Q, are aligned in this order in a row, from the side of the third edge35of the substrate30, toward the fourth edge36.

The connection wiring308yof the wiring307L includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion308atoward the third edge35. The second portion extends along the first direction X, from the second land portion308xtoward the second edge34. The second portion is connected to the first portion.

The respective connection wirings308cof the wirings307M to307O include a first portion, a second portion, a third portion, and a fourth portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion308atoward the third edge35. The second portion extends from the first portion along the first direction X, toward the second edge34. The third portion extends from the second portion along the second direction Y, toward the third edge35. The fourth portion extends from the third portion toward the first edge33. The fourth portion is connected to the second land portion308b.

The wiring307P includes a first portion, a second portion, and a third portion, each of which will be described hereunder. The first portion extends along the second direction Y, from the first land portion308atoward the third edge35. The second portion extends from the first portion along the first direction X, toward the second edge34. The third portion extends from the second portion along the second direction Y, toward the third edge35. The third portion is connected to the second land portion308b.

The control chip48is electrically connected to the second electrode GP of the semiconductor chip44X, via an intermediary wiring218A. The control chip48is also electrically connected to the second electrode GP of the semiconductor chip45X, via an intermediary wiring218B. The intermediary wiring218A extends along the first direction X. The intermediary wiring218A extends toward the second edge34, beyond the island portion304. The end portion of the intermediary wiring218A on the side of the second edge34is located so as to overlap with the semiconductor chip44X (seeFIG. 89), as viewed in the second direction Y. The intermediary wiring218B includes a first portion and a second portion, each of which will be described hereunder. The first portion extends along the first direction X. The first portion is located on the side of the third edge35of the substrate30, with respect to the intermediary wiring218A. The end portion of the first portion on the side of the second edge34overlaps with the semiconductor chip45X (seeFIG. 89), as viewed in the second direction Y. The second portion extends along the second direction Y, from the end portion of the first portion on the side of the first edge33, toward the control chip48. The control chip48and a first end portion of the intermediary wiring218A are connected via the wire312A. A second end portion of the intermediary wiring218A and the semiconductor chip44X are connected via the wire312G. The control chip48and a first end portion of the intermediary wiring218B are connected via the wire312B. A second end portion of the intermediary wiring218B and the semiconductor chip46X are connected via the wire312H.

In the variation shown inFIG. 112, the position of the control chip48in the second direction Y may be modified as desired. In an example, the control chip48may be located such that an end portion thereof in the second direction Y is located at the end portion of the island portion302on the side of the second region30A.

In the variation shown inFIG. 112, the position of the control chip47on the island portion301may be modified as desired. In an example, the control chip47may be located at a position on the island portion301, on the side of the lead frame20A in the second direction Y. More specifically, the control chip47may be located on the side of the lead frame20A, with respect to the intermediary chip310. In this case, the control chip47is located closer to the semiconductor chips41X to43X, and therefore the wires311A to311C, connecting the control chip47and the semiconductor chips41X to43, can each be shortened, compared with the configuration according to the tenth embodiment.

In the foregoing embodiments, at least one of the island portions21aand22aof the lead frames20A to20D may be without the recess21g(recess22h).

In the foregoing embodiments, the positional arrangement of the semiconductor chips41X to43X may be modified as desired. In an example, the semiconductor chip41X may be located on the side of the first edge33of the substrate30, with respect to the semiconductor chips42X and43X. In addition, the semiconductor chip43X may be located on the side of the first edge33of the substrate30, with respect to the semiconductor chip42X.

In the foregoing embodiments, the positional arrangement of the semiconductor chips44X to46X may be modified as desired. In an example, the semiconductor chip44X may be located on the side of the first edge33of the substrate30, with respect to the semiconductor chips45X and46X. In addition, the semiconductor chip45X may be located on the side of the first edge33of the substrate30, with respect to the semiconductor chip46X.

Although the semiconductor chips41X to43X are located on the side of the second edge34of the substrate30, with respect to the semiconductor chips44X to46X, in the foregoing embodiments, the semiconductor chips41X to43X may be located on the side of the first edge33of the substrate30, with respect to the semiconductor chips44X to46X. In this case, the lead frame20A is located on the side of the first edge33of the substrate30, with respect to the lead frames20B to20G. In addition, the lead frames20E to20G may be located on the side of the second edge34of the substrate30, with respect to the lead frames20B to20D.

In the foregoing embodiments, the substrate30may be formed of a metal, instead of a ceramic. In this case, the insulation layer is formed on the surface of the metal substrate, and the wiring pattern50(200,300,330,350, and370) is formed on the insulation layer.

The technical concepts perceived on the basis of the foregoing embodiments and variations thereof will be itemized as follows.

A semiconductor device including:

a substrate;

a conductive section formed on the substrate and including a conductive material;

a first lead located on the substrate and more heat-dissipative than the substrate;

a semiconductor chip located on the first lead;

a control chip that controls an operation of the semiconductor chip, the control chip being electrically connected to the conductive section and the semiconductor chip and being located on the substrate so as to be spaced apart from the semiconductor chip and the first lead in a plan view; and

a resin covering the semiconductor chip, the control chip, at least a part of the substrate, and a part of the lead.

The semiconductor device according to clause A1, in which the substrate includes a first face, and

the conductive section is formed on the first face.

The semiconductor device according to clause A2, in which the substrate includes a second face opposite to the first face of the substrate, and

the second face is exposed from the resin.

The semiconductor device according to clause A2 or A3, in which the first lead is located on the first face.

The semiconductor device according to clause A4, in which the first lead is bonded to the substrate via a first bonding material.

The semiconductor device according to clause A5, further including a bonding section formed on the first face of the substrate, in which the first lead is connected to the bonding section via the first bonding material.

The semiconductor device according to clause A6, in which the bonding section includes a conductive material that forms the conductive section.

The semiconductor device according to any one of clauses A4 to A7, in which the first lead has a part covered with the resin and another part exposed from the resin.

The semiconductor device according to any one of clauses A2 to A8, further including a second lead spaced apart from the first lead and located on and electrically connected to the conductive section.

The semiconductor device according to clause A9, in which the second lead has a part covered with the resin and another part exposed from the resin.

The semiconductor device according to clause A9 or 10, in which the second lead and the conductive section are bonded to each other via a first conductive bonding material.

The semiconductor device according to any one of clauses A9 to A11, in which the control chip is located between the semiconductor chip and the second lead as viewed in a first direction orthogonal to a normal direction of the first face of the substrate.

The semiconductor device according to any one of clauses A9 to A12, in which the semiconductor chip is bonded to the first lead via a second conductive bonding material.

The semiconductor device according to clause A13, in which the semiconductor chip is connected to the first lead via a first conductive material.

The semiconductor device according to any one of clauses A9 to A14, in which the control chip is bonded to the conductive section via a third conductive bonding material.

The semiconductor device according to any one of clauses A9 to A15, in which the control chip is connected to the conductive section via a second conductive material.

The semiconductor device according to any one of clauses A9 to A16, in which a first voltage level of an electrical signal applied to the second lead is lower than a second voltage level for driving the control chip.

The semiconductor device according to any one of clauses A9 to A17, further including a first transmission circuit having a transformer structure including at least two coils opposed to each other with a spacing therebetween, the first transmission circuit being configured to transmit an electrical signal, in which the first transmission circuit transmits the electrical signal between the control chip and the second lead.

The semiconductor device according to clause A18, in which the first transmission circuit is covered with the resin.

The semiconductor device according to any one of clauses A1 to A19, in which the conductive section contains silver.

The semiconductor device according to any one of clauses A1 to A19, in which the conductive section contains copper.

The semiconductor device according to any one of clauses A1 to A19, in which the conductive section contains gold.

The semiconductor device according to any one of clauses A1 to A22, in which the substrate contains a ceramic.

The semiconductor device according to any one of clauses A1 to A23, in which the semiconductor chip includes a SiC substrate.

The semiconductor device according to any one of clauses A1 to A23, in which the semiconductor chip includes a Si substrate.

The semiconductor device according to clause A18, in which the control chip is located between the semiconductor chip and the second lead as viewed in the first direction orthogonal to the normal direction of the first face of the substrate.

The semiconductor device according to clause A26, further including a primary-side circuit chip that transmits a command signal to the control chip through the first transmission circuit, in which as viewed in the first direction, a second lead, among a plurality of second leads, that is electrically connected to the primary-side circuit chip has a portion sticking out from the resin, and another second lead electrically connected to the control chip has a portion sticking out from the resin, and the former portion is greater in length than the latter portion.

The semiconductor device according to clause A27, in which the semiconductor chip and the control chip overlap with each other, as viewed in a second direction orthogonal to the normal direction of the first face and the first direction.

The semiconductor device according to clause A27, in which the semiconductor chip, the control chip, and the first transmission circuit overlap with each other, as viewed in a second direction orthogonal to the normal direction of the first face and the first direction.

The semiconductor device according to clause A27, including two control chips, in which the two control chips overlap with each other, as viewed in the first direction.

The semiconductor device according to clause A27, further including a plurality of wires connected to the control chip, in which, in a second direction orthogonal to the normal direction of the first face and the first direction, the number of the wires extending from the control chip toward the first transmission circuit is larger than the number of the wires extending from the control chip toward the semiconductor chip.

The semiconductor device according to clause A27, in which an edge of a lead oriented in the first direction includes a portion rougher than a portion of an edge of a lead oriented in a second direction orthogonal to the normal direction of the first face and the first direction.

The semiconductor device according to clause A27, in which the conductive section includes a base portion on which the control chip is located, and

in a second direction orthogonal to the normal direction of the first face and the first direction, a portion of the base portion extending from the control chip toward the first transmission circuit is longer than a portion of the base portion extending from the control chip toward the semiconductor chip.

The semiconductor device according to clause A27, in which the conductive section includes a plurality of second portions respectively bonded to the plurality of second leads, and

a clearance between the plurality of second leads in the first direction is narrower than a clearance between the plurality of second portions of the conductive section.

The semiconductor device according to clause A27, in which a clearance in the first direction between two adjacent ones of the plurality of second leads, one electrically connected to the control chip and the other electrically connected to the primary-side circuit chip, is wider than a clearance between second leads electrically connected to the control chip and a clearance between second leads electrically connected to the primary-side circuit chip.

The semiconductor device according to any one of clauses A1 to A23, in which the semiconductor chip includes a GaN substrate.

A semiconductor package including: a substrate having a wiring pattern formed on a surface thereof; a first lead frame located on the substrate; a first semiconductor chip located on the first lead frame; a first control chip located on the substrate, electrically connected to the wiring pattern and the first semiconductor chip, and configured to control an operation of the first semiconductor chip; and a first resin covering the first semiconductor chip, the first control chip, and a part of the first lead frame.

The semiconductor package according to clause B1, further including a second lead frame spaced apart from the first lead frame and located on and electrically connected to the wiring pattern.

The semiconductor package according to clause B2, in which the second lead frame has a portion covered with the first resin and another portion exposed from the first resin.

The semiconductor package according to clause B2 or B3, in which the second lead frame and the wiring pattern are connected via a first conductive material.

The semiconductor package according to any one of clauses B2 to B4, in which the first control chip is located between the second lead frame and the first semiconductor chip as viewed in a first direction perpendicular to a planar direction of the surface of the substrate.

The semiconductor package according to any one of clauses B2 to B5, further including a first transmission circuit having a transformer structure including at least two coils opposed to each other with a spacing therebetween, the first transmission circuit being configured to transmit an electrical signal, in which the first transmission circuit transmits the electrical signal between the control chip and the second lead frame.

The semiconductor package according to clause B6, in which the first transmission circuit is located between the second lead frame and the first control chip as viewed in the first direction perpendicular to the planar direction of the surface of the substrate.

The semiconductor package according to clause B6 or B7, in which a first voltage of an electrical signal applied to the second lead frame is lower than a second voltage for driving the first control chip.

The semiconductor package according to any one of clauses B6 to B8, in which the first transmission circuit is located on the substrate and electrically connected to the wiring pattern.

The semiconductor package according to clause B9,

in which the first transmission circuit is located on a part of the wiring pattern.

The semiconductor package according to any one of clauses B1 to B10, in which the first lead frame is connected to the substrate via a second conductive material.

The semiconductor package according to any one of clauses B1 to B11, in which the first control chip is located on a part of the wiring pattern.

The semiconductor package according to any one of clauses B1 to B12, in which the first control chip is connected to the wiring pattern via a third conductive material.

The semiconductor package according to any one of clauses B1 to B13, in which the first lead frame and the first semiconductor chip are connected via a fourth conductive material.

The semiconductor package according to any one of clauses B1 to B14, in which the wiring pattern contains silver.

The semiconductor package according to any one of clauses B1 to B14, in which the wiring pattern contains copper.

The semiconductor package according to any one of clauses B1 to B14, in which the wiring pattern contains gold.

The semiconductor package according to any one of clauses B1 to B14, in which the substrate contains a ceramic.

The semiconductor package according to any one of clauses B1 to B18, in which the first semiconductor chip includes a SiC substrate.

The semiconductor package according to any one of clauses B1 to B18, in which the first semiconductor chip includes a Si substrate.

The semiconductor package according to clause B20, in which the first semiconductor chip includes an IGBT element.

A semiconductor package including: a substrate having a wiring pattern formed on a surface thereof; a first lead frame located on the substrate; a semiconductor chip located on the first lead frame; a second lead frame connected to the wiring pattern; a control chip electrically connected to the second lead frame via the wiring pattern and configured to control an operation of the semiconductor chip; and an encapsulating resin that encapsulates the wiring pattern, the semiconductor chip, and the control chip.

The semiconductor package according to clause B22, in which the first lead frame is connected to a plate-shaped bonding section formed on the substrate.

The semiconductor package according to clause B23, in which the wiring pattern and the bonding section are formed of a same material.

The semiconductor package according to any one of clauses B22 to B24, in which the substrate is a ceramic substrate.

The semiconductor package according to any one of clauses B22 to B25, in which the substrate is divided into a first region and a second region, the first region being formed with the wiring pattern and connected to the second lead frame, the second region being connected to the first lead frame.

The semiconductor package according to any one of clauses B22 to B26, in which the wiring pattern and the control chip are electrically connected to each other via a first connection material.

The semiconductor package according to clause B27, in which the first connection material is connected to a face of the control chip that is opposite to another face via which the control chip is connected to the wiring pattern.

The semiconductor package according to any one of clauses B22 to B28, further including a third lead frame unconnected to the wiring pattern and the substrate, in which the third lead frame is electrically connected to the semiconductor chip via a second connection material.

The semiconductor package according to any one of clauses B22 to B29, in which, in one planar direction of the substrate, the first lead frame is provided so as to stick out from one side of the substrate, and the second lead frame is provided so as to stick out from the other side of the substrate.

The semiconductor package according to any one of clauses B22 to B30, further including a signal transmission unit, a transformer, and a signal reception unit, in which the signal transmission unit and the transformer are connected to each other via a third connection material, and the transformer and the signal reception unit are connected to each other via a fourth connection material.

The semiconductor package according to clause B31, in which the third connection material is shorter than the fourth connection material.

The semiconductor package according to clause B29 or B30, further including a signal transmission unit, a transformer, and a signal reception unit, in which the second lead frame includes a plurality of primary-side lead frames to which the signal transmission unit is electrically connected, and a plurality of secondary-side lead frames to which the signal reception unit is electrically connected, and

the plurality of primary-side lead frames and the plurality of secondary-side lead frames are located adjacent to each other, with a clearance therebetween, in a direction orthogonal to the one planar direction of the substrate in which the first lead frame sticks out from the substrate.

The semiconductor package according to clause B33, in which a distance between the plurality of primary-side lead frames and the plurality of secondary-side lead frames is longer than an array pitch of the plurality of secondary-side lead frames.

The semiconductor package according to clause B33 or B34, in which the array pitch of the plurality of secondary-side lead frames is larger than an array pitch of the plurality of primary-side lead frames.

The semiconductor package according to any one of clauses B33 to B35, in which a distal end of the primary-side lead frame and a distal end of the secondary-side lead frame in the second direction are located at different positions.

The semiconductor package according to clause B36, in which the distal end of the primary-side lead frame is more distant from the substrate in the second direction than the distal end of the secondary-side lead frame.

The semiconductor package according to any one of clauses B22 to B37, in which the semiconductor chip includes a first transistor and a second transistor, and

the control chip includes a first control circuit chip that controls an operation of the first transistor, and a second control circuit chip that controls an operation of the second transistor.

The semiconductor package according to clause B38, in which the wiring pattern includes a ground pattern on which the first control circuit chip and the second control circuit chip are mounted.

The semiconductor package according to clause B38 or B39, in which the wiring pattern includes a first ground pattern connected to the first control circuit chip, and a first power source pattern that supplies a source voltage to the first control circuit chip.

The semiconductor package according to any one of clauses B38 to B40, in which the wiring pattern includes a second ground pattern connected to the second control circuit chip, and a second power source pattern that supplies a source voltage to the second control circuit chip.

The semiconductor package according to any one of clauses B38 to B41, in which the wiring pattern includes a signal pattern electrically connected to the first control circuit chip or the second control circuit chip.

The semiconductor package according to clause B42, in which the wiring pattern includes a first signal pattern that transmits a control signal for the first transistor to the second control circuit chip.

The semiconductor package according to clause B42 or B43, in which the wiring pattern includes a second signal pattern that transmits a control signal for the second transistor to the second control circuit chip.

The semiconductor package according to clause B44, in which the wiring pattern includes at least one first intermediary wiring configured to relay the control signal for controlling the operation of the first transistor from the second control circuit chip to the first control circuit chip.

The semiconductor package according to clause B45, in which the first control circuit chip and the second control circuit chip are disposed with a clearance therebetween,

a plurality of the first intermediary wirings are formed between the first control circuit chip and the second control circuit chip, and

the plurality of first intermediary wirings each extend along an array direction of the first control circuit chip and the second control circuit chip and are disposed with a clearance between each other in the direction orthogonal to the array direction, as viewed in a plan view of the substrate.

The semiconductor package according to clause B46, in which the plurality of first intermediary wirings each include land portions formed at respective end portions in the extending direction, and

the first intermediary wirings adjacent to each other are located so as to overlap with at least one of the land portions of the plurality of first intermediary wirings, as viewed in the array direction.

The semiconductor package according to clause B46 or B47, in which the wiring pattern includes a second intermediary wiring that supplies a source voltage from one of the first control circuit chip and the second control circuit chip to the other, and

the second intermediary wiring is formed adjacent to the first intermediary wiring in the direction orthogonal to the array direction, as viewed in a plan view of the substrate.

The semiconductor package according to clause B39, in which the second lead frame includes a plurality of lead frames electrically connected to the first control circuit chip and the second control circuit chip,

at least a number of the plurality of lead frames are arranged along one of edges constituting the periphery of the substrate, and

a lead frame of the plurality of lead frames that is connected to the ground pattern is located at an extremity of the plurality of lead frames in the direction along the edge of the substrate.

The semiconductor package according to any one of clauses B38 to B49, further including a signal transmission unit and a transformer, in which the signal transmission unit outputs a control signal for controlling the operation of the first and second transistors to the second control circuit chip through the transformer.

The semiconductor package according to clause B50, in which the signal transmission unit, the transformer, and the second control circuit chip are arranged in the direction orthogonal to the array direction of the second control circuit chip and the first control circuit chip, as viewed in a plan view of the substrate.

The semiconductor package according to clause B50, in which the signal transmission unit, the transformer, and the second control circuit chip are arranged along the array direction of the second control circuit chip and the first control circuit chip.

The semiconductor package according to any one of clauses B50 to B52, in which the wiring pattern includes a ground pattern on which the signal transmission unit and the transformer are mounted.

The semiconductor package according to clause B53, in which the second control circuit chip is mounted on another ground pattern electrically insulated from the signal transmission unit and the transformer.

The semiconductor package according to any one of clauses B50 to B54, in which the wiring pattern includes a first signal pattern that transmits a control signal for the first transistor to the first control circuit chip, and a second signal pattern that transmits a control signal for the second transistor to the second control circuit chip, and

the first signal pattern and the second signal pattern are each electrically connected to the signal transmission unit.

The semiconductor package according to any one of clauses B50 to B55, in which the transformer includes a first transformer that transmits a control signal for controlling an operation of the first transistor to the first control circuit chip, and a second transformer that transmits a control signal for controlling an operation of the second transistor to the second control circuit chip, and

the first transformer and the second transformer are provided in separate chips.

The semiconductor package according to clause B56, in which the signal transmission unit includes a first signal transmission unit that transmits the control signal for the first transistor to the first control circuit chip, and a second signal transmission unit that transmits the control signal for the second transistor to the second control circuit chip, and

the first signal transmission unit and the second signal transmission unit are provided in separate chips, the first signal transmission unit is located adjacent to the first transformer, and the second signal transmission unit is located adjacent to the second transformer.

The semiconductor package according to clause B57, in which the wiring pattern includes a first signal pattern that transmits the control signal for the first transistor to the first control circuit chip, and a second signal pattern that transmits the control signal for the second transistor to the second control circuit chip, and

the first signal pattern is electrically connected to the first signal transmission unit, and the second signal pattern is electrically connected to the second signal transmission unit.

The semiconductor package according to clause B57 or B58, in which the wiring pattern includes a first island portion, a second island portion, a third island portion, and a fourth island portion, the first control circuit chip is mounted on the first island portion, the second control circuit chip is mounted on the second island portion, the first signal transmission unit and the first transformer are mounted on the third island portion, the second signal transmission unit and the second transformer are mounted on the fourth island portion, the first island portion is formed adjacent to the third island portion, and the second island portion is formed adjacent to the fourth island portion.

The semiconductor package according to clause B59, in which the wiring pattern further includes a connection wiring connecting the first island portion and the second island portion to each other.

The semiconductor package according to any one of clauses B50 to B55, in which the signal transmission unit includes a first signal transmission unit that transmits the control signal for controlling an operation of the first transistor to the first control circuit chip, and a second signal transmission unit that transmits the control signal for controlling an operation of the second transistor to the second control circuit chip,

the transformer includes a first transformer that transmits a signal of the first signal transmission unit to the first control circuit chip, and a second transformer that transmits a signal of the second signal transmission unit to the second control circuit chip, the semiconductor package further including a first signal reception unit that receives the signal from the first transformer,

the first signal transmission unit, the first transformer, and the first signal reception unit are integrated into a first signal transmission circuit in a single chip, and

the second signal transmission unit, the second transformer, and the second control circuit chip are integrated into a second signal transmission circuit in a single chip.

The semiconductor package according to clause B61, in which the wiring pattern includes a first signal pattern that transmits the control signal for the first transistor to the first control circuit chip, and a second signal pattern that transmits the control signal for the second transistor to the second control circuit chip, the first signal pattern is electrically connected to the first signal transmission circuit, and the second signal pattern is electrically connected to the second signal transmission circuit.

The semiconductor package according to clause B61 or B62, in which the wiring pattern includes a ground pattern that electrically connects the first signal transmission circuit and the second signal transmission circuit.

The semiconductor package according to any one of clauses B61 to B63, in which the wiring pattern includes a power source pattern that electrically connects the first signal transmission circuit and the second signal transmission circuit, and supplies a source voltage to the first signal transmission circuit and the second signal transmission circuit.

The semiconductor package according to any one of clauses B57 to B60, including a plurality of the first transistors, in which a plurality of the first signal transmission units, a plurality of the first transformers, and a plurality of the first control circuit chips are provided, in accordance with the number of the first transistors.

The semiconductor package according to any one of clauses B38 to B65, further including a diode electrically connected to the first control circuit chip.

The semiconductor package according to clause B66, further including a capacitor connected to the diode.

The semiconductor package according to clause B67, in which the capacitor is mounted on the wiring pattern.

The semiconductor package according to any one of clauses B38 to B68, in which the wiring pattern includes at least one of a third intermediary wiring provided halfway on a connection path between a control terminal that controls an operation of the first transistor and the first control circuit chip, and a fourth intermediary wiring provided halfway on a connection path between a control terminal that controls an operation of the second transistor and the second control circuit chip.

The semiconductor package according to clause B69, in which the wiring pattern includes the third intermediary wiring, and the semiconductor chip includes a plurality of the first transistors,

the third intermediary wiring is formed on a connection path between a control terminal of the first transistor, most distant from the first control circuit chip among the plurality of first transistors, and the first control circuit chip.

The semiconductor package according to clause B69 or B70, in which the wiring pattern includes the fourth intermediary wiring, and the semiconductor chip includes a plurality of the second transistors, and

the fourth intermediary wiring is formed on a connection path between a control terminal of the second transistor, most distant from the second control circuit chip among the plurality of second transistors, and the second control circuit chip.

The semiconductor package according to clause B71, in which the wiring pattern includes the fourth intermediary wiring, the semiconductor chip includes a plurality of the second transistors, the fourth intermediary wiring is individually formed on each of the connection paths between the plurality of second transistors and the second control circuit chip.

The semiconductor package according to any one of clauses B22 to B72, in which the semiconductor chip is a SiC MOSFET.