Patent Description:
A glass substrate is promising as a substrate for a semiconductor device such as an optical component and a radiofrequency component since a semiconductor processing technology can be applied to the glass substrate, and the glass substrate has high surface flatness. In order to put the glass substrate into practical use as a semiconductor substrate, it is necessary to maintain the flatness of the glass substrate and to suppress cracking of the end portion thereof. Therefore, protection of the glass substrate is important.

<CIT> discloses embedding a glass substrate into a core substrate using a binding layer between side walls of the glass substrate and the core substrate.

There is a technology for covering the sidewall of a glass substrate with a resin material at the time of cutting and processing the glass substrate (Patent Document <NUM>). However, the resin material does not have sufficiently high rigidity to protect the glass substrate, which makes it difficult to perform highly accurate processing while maintaining the flatness of the glass substrate. Also, since the glass substrate is held only by adhesion between the resin material and the glass substrate, there is a possibility that the glass substrate is warped by an external force, or that the resin material and the glass substrate are separated from each other.

In such a case, for example, in a case where a complementary metal oxide semiconductor (CMOS) image sensor is implemented on the glass substrate, optical axes of the CMOS image sensor and the optical lens may be misaligned due to the warpage of the glass substrate. Furthermore, the end portion of the glass substrate may crack, which may lower the reliability of the semiconductor device.

Therefore, the present disclosure provides a semiconductor device enabling the flatness of a glass substrate to be maintained and enabling the end portion of the glass substrate to be sufficiently protected.

A semiconductor device according to an aspect of the present disclosure includes a glass substrate that includes a first surface, a second surface provided on the opposite side of the first surface, and a first side surface provided between the first surface and the second surface, a wiring that is provided on the first and second surfaces, a metal film that covers the first side surface, and a frame that is provided further on the outer side than the metal film, and that is bonded to the metal film at the first side surface.

The metal film may include the same material as that for the wiring.

The metal film may be provided on a side provided with the first surface and a side provided with the second surface from the glass substrate to the frame to cover both the glass substrate and the frame.

The frame may include a third surface provided on the side provided with the first surface, a fourth surface provided on the side provided with the second surface, and a second side surface provided between the third surface and the fourth surface and opposed to the first side surface, and the metal film may be provided from the first surface to the third surface and may be provided from the second surface to the fourth surface at a boundary portion between the glass substrate and the frame.

The height difference between the first surface and the third surface and the height difference between the second surface and the fourth surface may each be smaller than the thickness of the metal film.

The frame may have a hole penetrating from the third surface to the fourth surface.

The inner wall of the hole may be covered with a metal material, and the metal material may electrically be connected to the wiring or the metal film.

A screw may be provided in the hole, and the screw may attach the frame and a housing to each other.

The metal film may be used as an antenna for wireless communication. The wiring may be used as an antenna for wireless communication, and the metal film may be used as a ground.

The metal film may be provided on an outer side surface of the frame and may be used as an antenna for wireless communication.

The metal film provided on the outer side surface of the frame may be used as a slot antenna having one or a plurality of slits.

A semiconductor chip may be mounted on the first surface of the glass substrate.

The glass substrate may include an opening portion penetrating from the first surface to the second surface, and a metal plate and a semiconductor chip provided on the metal plate may be provided in the opening portion.

The metal plate may be a heat dissipation plate, and the semiconductor chip may be an image sensor chip.

The frame may include a third surface provided on a side provided with the first surface and a fourth surface provided on a side provided with the second surface, and may include a hole penetrating from the third surface to the fourth surface, a screw provided in the hole may attach the frame and a housing to each other, and the housing may be provided with an optical lens, and the optical lens may collect light onto the image sensor chip.

Hereinafter, specific embodiments to which the present technology has been applied will be described in detail with reference to the drawings. The drawings are schematic or conceptual, and the ratio or the like of respective components is not necessarily the same as actual one. In the description and the drawings, similar components to those that have been described with reference to the previously described drawings are labeled with the same reference signs, and the detailed description thereof is omitted as needed.

<FIG> is a schematic plan view illustrating a configuration example of a semiconductor device (hereinafter also referred to as a package or a module) according to a first embodiment. <FIG> is a schematic cross-sectional view illustrating the configuration example of the semiconductor device according to the first embodiment. Note that <FIG> illustrates a positional relationship among a glass substrate <NUM>, a frame <NUM>, a metal film <NUM>, and a semiconductor chip <NUM>, and does not illustrate in detail components such as a through electrode.

As illustrated in <FIG>, the semiconductor chip <NUM> is mounted on the central portion of the glass substrate <NUM>. The metal film <NUM> and the frame <NUM> are provided around the glass substrate <NUM> so as to continuously cover the entire side surface of the glass substrate <NUM>. The semiconductor chip <NUM> is not particularly limited, but may be, for example, a CMOS image sensor chip. Note that the metal film <NUM> and the frame <NUM> may be provided so as to cover a part of the side surface of the glass substrate <NUM>.

As illustrated in <FIG>, the glass substrate <NUM> includes a first surface 10A, a second surface 10B provided on the opposite side of the first surface, and a side surface (first side surface) 10C provided between the first surface 10A and the second surface 10B. On the first surface 10A, a stacked wiring portion <NUM> is provided. The stacked wiring portion <NUM> includes a plurality of layers of wirings <NUM> provided on the first surface 10A. The wirings <NUM> are covered with an interlayer insulating film <NUM>. A stacked wiring portion <NUM> includes a plurality of layers of wirings <NUM> provided on the second surface 10B. The wirings <NUM> are covered with an interlayer insulating film <NUM>. For the wirings <NUM> and <NUM>, a low-resistance metal material such as copper is used, for example.

A part of the wirings <NUM> is electrically connected to an electrode pad <NUM> on the first surface 10A. A part of the wirings <NUM> is electrically connected to an electrode pad <NUM> on the second surface 10B. The electrode pads <NUM> and <NUM> are connected to an electronic component <NUM> and the like, or connected to other not-illustrated substrates and components.

Also, another part of the wirings <NUM> is electrically connected to a bonding pad <NUM>, and is electrically connected to the semiconductor chip <NUM> via the bonding pad <NUM> and a bonding wire <NUM>.

On the side surface 10C of the glass substrate <NUM>, the metal film <NUM> is provided. As illustrated in <FIG>, the metal film <NUM> is provided on the entire outer edge of the glass substrate <NUM>. As illustrated in <FIG>, the metal film <NUM> is also provided so as to cover the entire side surface 10C from the first surface 10A to the second surface 10B. For the metal film <NUM>, a low-resistance metal material such as copper is used, for example. The metal film <NUM> may include, for example, the same metal material as those for the wirings <NUM> and <NUM>. Note that the metal film <NUM> does not have to be provided at a part of the outer edge of the glass substrate <NUM>, and does not have to cover a part of the side surface 10C.

Further, the metal film <NUM> is provided on each of the first and second surfaces 10A and 10B from the glass substrate <NUM> to the frame <NUM> to cover both the glass substrate <NUM> and the frame <NUM>. For example, the metal film <NUM> on the first surface 10A is a metal film (metal film portion) 30A, and the metal film <NUM> on the second surface 10B is a metal film (metal film portion) 30B. In this case, the metal film 30A is provided from the first surface 10A of the glass substrate <NUM> to a third surface 20A of the frame <NUM> at the boundary portion between the glass substrate <NUM> and the frame <NUM>. The third surface 20A is a surface of the frame <NUM> on the side provided with the first surface 10A. The metal film 30B is provided from the second surface 10B of the glass substrate <NUM> to a fourth surface 20B of the frame <NUM> at the boundary portion between the glass substrate <NUM> and the frame <NUM>. The fourth surface 20B is a surface of the frame <NUM> on the side provided with the second surface 10B.

In order for the metal film 30A to cover the boundary portion from the first surface 10A of the glass substrate <NUM> to the third surface 20A of the frame <NUM>, the height difference between the first surface 10A and the third surface 20A is preferably smaller than the thickness of the metal film 30A. More preferably, the first surface 10A and the third surface 20A are substantially on the same plane. By doing so, the metal film 30A can continuously be provided from the first surface 10A of the glass substrate <NUM> to the third surface 20A of the frame <NUM>.

In order for the metal film 30B to cover the boundary portion from the second surface 10B of the glass substrate <NUM> to the fourth surface 20B of the frame <NUM>, the height difference between the second surface 10B and the fourth surface 20B is preferably smaller than the thickness of the metal film 30B. More preferably, the second surface 10B and the fourth surface 20B are substantially on the same plane. By doing so, the metal film 30B can continuously be provided from the second surface 10B of the glass substrate <NUM> to the fourth surface 20B of the frame <NUM>.

In this manner, the metal film <NUM> is provided between the side surface 10C of the glass substrate <NUM> and the frame <NUM>, and covers the boundary portion between the glass substrate <NUM> and the frame <NUM>. Therefore, the metal film <NUM> protects the end portion and the side surface 10C of the glass substrate <NUM>. Unlike a resin material, the metal film <NUM> can have sufficient rigidity to protect the glass substrate <NUM>. Accordingly, the metal film <NUM> can sufficiently protect the end portion of the glass substrate <NUM>. Alternatively, the metal film <NUM> may be used as a part of the wirings <NUM> and <NUM>.

The frame <NUM> is provided further on the outer side than the metal film <NUM>, and is bonded to the metal film <NUM> at the side surface 10C of the glass substrate <NUM> via an insulating film <NUM>. The frame <NUM> includes the third surface 20A, the fourth surface 20B, and a side surface (second side surface) 20C provided between the third surface 20A and the fourth surface 20B. The side surface 20C is an inner side surface of the frame <NUM> and is a surface opposed to the side surface 10C. The frame <NUM> is bonded at the side surface 20C thereof to the metal film <NUM>. As illustrated in <FIG>, the frame <NUM> is provided so as to surround the entire outer edge of the glass substrate <NUM>, and protects the side surface 10C of the glass substrate <NUM> together with the metal film <NUM>. The metal film <NUM> is provided on the third and fourth surfaces 20A and 20B of the frame <NUM> as well. For the frame <NUM>, an insulating resin material such as glass epoxy resin is used, for example. For the insulating film <NUM>, an insulating resin material such as epoxy resin is used, for example.

The glass substrate <NUM> is provided with a through electrode (through glass via (TGV)) <NUM>. The through electrode <NUM> includes a metal film <NUM> covering the inner wall of a via hole penetrating the glass substrate <NUM>, and an insulating film <NUM> filling the inside of the metal film <NUM>. For the metal film <NUM>, a low-resistance metal material such as copper is used, for example. The metal film <NUM> may include the same material as those for the wirings <NUM> and <NUM>. For the insulating film <NUM>, an insulating material such as epoxy resin is used, for example. The metal film <NUM> is provided to electrically connect a part of the wirings <NUM> to a part of the wirings <NUM> via the via hole.

The semiconductor chip <NUM> and the electronic component <NUM> are mounted on the glass substrate <NUM>. A bonding pad <NUM> of the semiconductor chip <NUM> is connected to the bonding pad <NUM> via the bonding wire <NUM>. The electronic component <NUM> is connected to the electrode pad <NUM>. The semiconductor chip <NUM> is bonded onto the interlayer insulating film <NUM> by an adhesive <NUM>.

According to the present embodiment, the metal film <NUM> is provided between the side surface 10C of the glass substrate <NUM> and the frame <NUM>, and covers the boundary portion between the glass substrate <NUM> and the frame <NUM>. Therefore, the metal film <NUM> can protect the end portion and the side surface 10C of the glass substrate <NUM>. Further, the frame <NUM> is bonded to the metal film <NUM> along the outer edge of the glass substrate <NUM>. Accordingly, the glass side surface can be protected by a member having higher rigidity.

In the present embodiment, as illustrated in <FIG>, the metal film 30B may include a plurality of wiring layers. For example, a plurality of wiring layers is left on the second surface 10B of the glass substrate <NUM> and the fourth surface 20B of the frame <NUM> to serve as the same wiring layers as those of the stacked wiring portion <NUM>. As a result, the metal film 30B can be formed as the same wiring layers as those of the stacked wiring portion <NUM>. Similarly, the metal film 30A may include the same plurality of wiring layers as that of the stacked wiring portion <NUM>. In this manner, since each of the metal films 30A and 30B includes a plurality of wiring layers, the metal films 30A and 30B can more reliably protect the end portion of the glass substrate <NUM>.

Also, since each of the metal films 30A and 30B is formed by the same layers as those of each of the stacked wiring portions <NUM> and <NUM>, an additional manufacturing process is dispensed with, and the semiconductor device can easily be manufactured.

<FIG> is a schematic cross-sectional view illustrating a configuration example of a semiconductor device according to a second embodiment. In the second embodiment, the semiconductor chip <NUM> is flip-chip connected to a substrate for a semiconductor device. The semiconductor chip <NUM> includes a metal bump <NUM>, and is connected to the stacked wiring portion <NUM> via the metal bump <NUM>. That is, in the second embodiment, the semiconductor chip <NUM> is flip-chip connected on the upper side of the glass substrate <NUM>. The other components of the second embodiment may be similar to the corresponding components of the first embodiment. Therefore, the second embodiment can exert similar effects to those of the first embodiment.

<FIG> is a schematic plan view illustrating a configuration example of a semiconductor device according to a third embodiment. <FIG> is a schematic cross-sectional view illustrating the configuration example of the semiconductor device according to the third embodiment. <FIG> illustrates a cross section taken along line <NUM>-<NUM> in <FIG>.

In the third embodiment, the glass substrate <NUM> includes at the center thereof an opening portion <NUM> penetrating from the first surface 10A to the second surface 10B. The opening portion <NUM> is formed to have a sufficient size to receive the semiconductor chip <NUM> and a metal plate <NUM>. Therefore, as illustrated in <FIG>, the opening portion <NUM> is substantially in a similar shape to the semiconductor chip <NUM> or the metal plate <NUM> and is slightly larger in size than the semiconductor chip <NUM> or the metal plate <NUM> as viewed from the upper side of the first surface 10A of the glass substrate <NUM>. In <FIG>, the semiconductor chip <NUM> and the metal plate <NUM> are both quadrangular, and thus the opening portion <NUM> is also formed in a quadrangular shape.

As illustrated in <FIG>, the semiconductor chip <NUM> is fitted in the upper portion of the opening portion <NUM>. The metal plate <NUM> is fitted in the lower portion of the opening portion <NUM>. In this manner, the metal plate <NUM> and the semiconductor chip <NUM> provided on the metal plate <NUM> are provided in the opening portion <NUM>. The metal plate <NUM> is in contact with the rear surface of the semiconductor chip <NUM>, absorbs heat generated in the semiconductor chip <NUM>, and releases the heat from the side of the glass substrate <NUM> provided with the second surface 10B. That is, the metal plate <NUM> functions as a heat dissipation plate for the semiconductor chip <NUM>. For the metal plate <NUM>, a material having high heat conductivity such as copper is used, for example. The semiconductor chip <NUM> is bonded onto the metal plate <NUM> by the adhesive <NUM>.

A metal film <NUM> is provided on the inner wall of the opening portion <NUM>. An insulating film <NUM> is provided between the metal film <NUM> and the semiconductor chip <NUM> and between the metal film <NUM> and the metal plate <NUM>. The insulating film <NUM> bonds the semiconductor chip <NUM> and the metal plate <NUM> to the metal film <NUM>. For the metal film <NUM>, a material having high heat conductivity such as copper is used, for example. The metal film <NUM> is, for example, copper plating. The metal film <NUM> covers at least a part of the side surface of the opening portion <NUM>, and has a function of transferring heat of the semiconductor chip <NUM> from the side surface and dissipating the heat.

As illustrated in <FIG> and <FIG>, as viewed from above the first surface 10A, the outer size of the metal plate <NUM> is larger than the outer size of the semiconductor chip <NUM>, and the entire bottom surface of the semiconductor chip <NUM> is in contact with the metal plate <NUM>. Therefore, the metal plate <NUM> can efficiently dissipate the heat of the semiconductor chip <NUM>.

Also, for example, in a case where the semiconductor chip <NUM> is a digital signal processor (DSP) or the like, the metal plate <NUM> can protect the semiconductor chip <NUM> from surrounding noise. This facilitates the design of the package of the semiconductor chip <NUM>.

Also, the Young's modulus or the heat expansion coefficient of the frame <NUM> can be different from those of the glass substrate <NUM>. By doing so, in a case where the metal plate <NUM> is fitted, the stress of the entire package can be adjusted.

A protective resin <NUM> covers the bonding wire <NUM> and the bonding pads <NUM> and <NUM> to protect the bonding wire <NUM> and the bonding pads <NUM> and <NUM>. For the protective resin <NUM>, an insulating resin material such as epoxy resin is used, for example.

A cover glass <NUM> is provided above the semiconductor chip <NUM>. The cover glass <NUM> transmits light coming from above the first surface 10A of the glass substrate <NUM> to the semiconductor chip (for example, a CMOS image sensor chip) <NUM>. Also, the cover glass <NUM> is provided to protect the sensor surface of the semiconductor chip <NUM>. The cover glass <NUM> is supported at a portion above the semiconductor chip <NUM> by a rib <NUM>.

In the third embodiment, as illustrated in <FIG>, three holes <NUM> to <NUM> are provided at two corners and a middle portion of a side of the frame <NUM>. As illustrated in <FIG>, the holes <NUM> to <NUM> penetrate from the third surface 20A to the fourth surface 20B of the frame <NUM>. Note that, in <FIG>, only the hole <NUM> is illustrated. The holes <NUM> to <NUM> penetrate the frame <NUM> and the interlayer insulating films <NUM> and <NUM>, and are provided to attach the frame <NUM> to another member with screws.

The holes <NUM> to <NUM> are provided in the frame <NUM>, and are not provided in the glass substrate <NUM>. Also, the metal film <NUM> and the insulating film <NUM> are provided between the frame <NUM> and the glass substrate <NUM>. Therefore, stress applied to the frame <NUM> when the frame <NUM> is attached to another member (for example, a housing <NUM> illustrated in <FIG>) with screws is less likely to be transmitted to the glass substrate <NUM>. Therefore, flatness of the glass substrate <NUM> can be maintained.

Note that, in the third embodiment, the metal plate <NUM> serving as a heat dissipation plate is provided in the opening portion <NUM>. However, instead of the metal plate <NUM>, an active component (not illustrated) having a heat dissipation function may be provided. The active component may be, for example, a microfluidic device or the like. In the active component, the heat dissipation temperature can actively be set, and the internal temperature distribution can be inclined. By doing so, the stress in the glass substrate <NUM> can be adjusted, and the flatness of the glass substrate <NUM> can be improved.

<FIG> is a schematic cross-sectional view illustrating a configuration example of a semiconductor device according to a fourth embodiment. The fourth embodiment is, for example, an embodiment in which the semiconductor device according to the third embodiment is used as a CMOS sensor module. In the fourth embodiment, the housing <NUM> is attached to the package according to the third embodiment with a screw <NUM>. The housing <NUM> includes an optical lens <NUM>. For the housing <NUM>, an insulating resin material is used, for example. The housing <NUM> is formed substantially in the same shape as the outer shapes of the frame <NUM> and the glass substrate <NUM>, and is formed in a quadrangular shape, for example. The screws <NUM> are inserted into the holes <NUM> to <NUM> in <FIG>, respectively, and the frame <NUM> is attached and secured to the housing <NUM> with the screws <NUM>. By doing so, the relative positional relationship between the semiconductor chip <NUM> and the optical lens <NUM> is determined. The optical lens <NUM> is provided to correspond to the light receiving surface of the semiconductor chip <NUM>, and collects incident light onto the semiconductor chip <NUM>. The semiconductor chip <NUM> generates an electric signal corresponding to the incident light (performs photoelectric conversion), and transmits the electric signal to another component.

The screws <NUM> may be inserted into the holes <NUM> to <NUM> through a metal plate <NUM> and a heat dissipation layer <NUM>, and attach the metal plate <NUM> and the housing <NUM> to each other so as to sandwich the frame <NUM> therebetween. For the metal plate <NUM>, a material having high heat conductivity such as copper and graphite is used, for example. For the heat dissipation layer <NUM>, grease, an epoxy adhesive, or the like is used, for example.

The metal film <NUM> may function as an antenna. For example, as illustrated in <FIG>, an antenna <NUM> may be provided on a motherboard <NUM>, and signals may be wirelessly transmitted/received between the metal film <NUM> and the antenna <NUM>. In this case, the metal plate <NUM> is not provided in the portion of the metal film <NUM> that performs the wireless communication. Also, the metal film <NUM> is electrically connected to the semiconductor chip <NUM> via the wirings <NUM> and <NUM>, and can receive an electric signal from the semiconductor chip <NUM>.

<FIG> is a schematic cross-sectional view illustrating a configuration example of a semiconductor device according to a fifth embodiment. In the fifth embodiment, each of the holes <NUM> to <NUM> of the package according to the third embodiment has a metal material on the inner wall thereof and is used as a through electrode. On the side of the glass substrate <NUM> provided with the second surface 10B, a wiring substrate <NUM> is provided. The wiring substrate <NUM> includes a plurality of wiring layers <NUM> and an interlayer insulating film <NUM> provided between the wiring layers <NUM>. The wiring substrate <NUM> is provided so as to be opposed to the entire second surface 10B of the glass substrate <NUM> and the entire fourth surface 20B of the frame <NUM>. That is, the wiring substrate <NUM> is bonded to the entire rear surface of the package.

The holes <NUM> to <NUM> are provided to penetrate both the frame <NUM> and the wiring substrate <NUM>. Furthermore, the inner wall of each of the holes <NUM> to <NUM> is covered with a metal film <NUM> serving as a metal material, and the metal film <NUM> is electrically connected to a part of the metal film <NUM> and a part of the wiring layers <NUM>. With the metal film <NUM>, each of the holes <NUM> to <NUM> can function as a through electrode, and the metal film <NUM> can function as a wiring or an antenna. For the metal film <NUM>, a low-resistance metal material such as copper is used, for example. Inside the metal film <NUM> of each of the holes <NUM> to <NUM>, an insulating film (not illustrated) may be provided, or the screw <NUM> may be inserted.

<FIG> is a schematic cross-sectional view illustrating a configuration example of a semiconductor device according to a sixth embodiment. In the sixth embodiment, a plurality of semiconductor chips <NUM> and <NUM> and the metal plate <NUM> are built in the opening portion <NUM> of the glass substrate <NUM>. The inner wall of the opening portion <NUM> extends in a direction substantially perpendicular to the first surface 10A or the second surface 10B. The metal film <NUM> and an insulating film <NUM> are provided on the inner wall of the opening portion <NUM>.

In the opening portion <NUM>, the semiconductor chip <NUM> is bonded to one surface 120A of the metal plate <NUM> via an adhesive 100A. The semiconductor chip <NUM> is bonded to the other surface 120B of the metal plate <NUM> via an adhesive 100B. The semiconductor chip <NUM> may be, for example, a CMOS image sensor chip, and the semiconductor chip <NUM> may be, for example, a CMOS circuit that processes a signal from the semiconductor chip <NUM>. In this manner, the package according to the present embodiment may be used as a multi-chip module.

Since glass has high processing accuracy, the thickness of the insulating film <NUM> can be reduced to bring the semiconductor chips <NUM> and <NUM> in the opening portion <NUM> of the glass substrate <NUM> close to the metal film <NUM>. By doing so, the heat transfer effect from the side surfaces of the semiconductor chips <NUM> and <NUM> to the metal film <NUM> is improved, and heat can efficiently be dissipated. Also, the package according to the present embodiment can be used as a multi-chip module, and can be thin and compact.

<FIG> is a schematic cross-sectional view illustrating a configuration example of a semiconductor device according to a seventh embodiment. Note that, in <FIG> and subsequent drawings, only the end portion of the semiconductor device is illustrated as appropriate. In the following drawings, only the end portion is illustrated as appropriate. In the seventh embodiment, the wiring <NUM> functions as an antenna, and the metal film <NUM> functions as a ground. The wiring <NUM> is insulated from the metal film <NUM> by the interlayer insulating film <NUM>. The metal film <NUM> is arranged immediately below the wiring <NUM> functioning as an antenna and is grounded. Thus, the antenna gain of the wiring <NUM> can be improved. The other components of the seventh embodiment may be the same as those of any of the first to sixth embodiments. Note that the metal film 30A is provided on the first surface 10A of the glass substrate <NUM>, but is not provided on the third surface 20A of the frame <NUM>.

<FIG>, and <FIG> are diagrams illustrating planar layouts of the wiring <NUM> functioning as an antenna. <FIG> is a cross-sectional view of the upper portion taken along line B-B in <FIG>. <FIG> is a cross-sectional view of the upper portion taken along line B-B in <FIG>.

As illustrated in <FIG>, the wiring <NUM> may be a dipole antenna including two linear conductors. A wiring 83A constituting a radiation element of the dipole antenna is provided on the third surface 20A of the frame <NUM>. The metal film <NUM> is grounded and functions as a reflective element.

Alternatively, as illustrated in <FIG> and <FIG>, the wiring <NUM> may be a Yagi-Uda antenna. The wiring 83A serving as a radiation element is provided on the third surface 20A of the frame <NUM>. The metal film <NUM> is grounded and functions as a reflective element.

As illustrated in <FIG>, the metal film <NUM> may be used as a Yagi-Uda antenna.

<FIG> is a schematic plan view illustrating a configuration example of a semiconductor device according to an eighth embodiment. In the eighth embodiment, the metal film <NUM> and a radiation element <NUM> constitute an antenna. The radiation element <NUM> is a conductor provided on the third surface 20A of the frame <NUM>, and is supplied with power from the not-illustrated wiring <NUM>. The side surface 10C of the glass substrate <NUM> covered with the metal film <NUM> has a curved surface centering on the radiation element <NUM>. The metal film <NUM> covering the side surface 10C functions as a reflective element. By the curved surface of the side surface 10C, the directivity and the gain of the antenna can be adjusted. Note that, in <FIG>, illustration of the insulating film <NUM> between the metal film <NUM> and the frame <NUM> is omitted.

<FIG> is a schematic cross-sectional view illustrating a configuration example of a semiconductor device according to a ninth embodiment. In the ninth embodiment, the metal film <NUM> is provided on an outer side surface 20D of the frame <NUM> as well. The metal film <NUM> on the outer side surface 20D is referred to as a metal film 30C. The metal film 30C on the outer side surface 20D is provided with a slit SLT, and the metal film 30C functions as a slot antenna.

<FIG> are side views illustrating examples of the slit SLT of the metal film 30C. The slit SLT of the metal film 30C may be one elongated slit as illustrated in <FIG>. Alternatively, the slit SLT of the metal film 30C may be a plurality of elongated slits arranged substantially in parallel as illustrated in <FIG>.

Such a slit SLT can be formed by plating the metal film 30C on the entire outer side surface 20D and then patterning the metal film 30C at the portion of the slit SLT using laser light irradiation or an etching technology. Alternatively, the surface region of the outer side surface 20D other than the slit SLT may be activated by laser light using a molded wiring device (MID) or the like to form the metal film 30C in the surface region.

In this manner, the metal film 30C functioning as an antenna may be provided on the outer side surface 20D of the frame <NUM>. This facilitates wireless communication with an electronic device (not illustrated) in the vicinity of the semiconductor device.

<FIG> is a schematic cross-sectional view illustrating a configuration example of a semiconductor device according to a tenth embodiment. In the tenth embodiment, metal films <NUM> and <NUM> are provided on the outer side surface 20D of the frame <NUM> and in the frame <NUM>. The metal films <NUM> and <NUM> are electrically connected to the wirings <NUM> and <NUM> or the metal film <NUM>, and function as an antenna. Alternatively, the metal films <NUM> and <NUM> may be used as waveguide elements 83C or 30C of the Yagi-Uda antenna illustrated in <FIG> or <FIG>. Moreover, the metal film <NUM> may be provided with the slit SLT and used as a slot antenna.

<FIG> is a schematic cross-sectional view illustrating a configuration example of a semiconductor device according to an eleventh embodiment. In the eleventh embodiment, a metal film <NUM> is built in the frame <NUM> and exposed from the outer side surface 20D of the frame <NUM>. The metal film <NUM> may be on the same plane as the outer side surface 20D. The metal film <NUM> is connected to the metal film <NUM>. The metal film <NUM> may include the same material as that for the metal film <NUM>.

<FIG> is a side view of the semiconductor device according to the eleventh embodiment as viewed from the outer side surface 20D of the frame <NUM>. As illustrated in <FIG>, the metal film <NUM> constitutes a radiation element of a dipole antenna. The planar layout of the metal film <NUM> may be the same as the planar layout of the wiring 83A illustrated in Fig. 10A.

The above antenna may include a fed antenna or a parasitic antenna. Also, the above antenna may be used in any of the first to sixth embodiments. By doing so, the effect of the above antenna can be obtained in the first to sixth embodiments as well.

Next, a method for manufacturing the semiconductor device according to the third embodiment will be described.

<FIG> are cross-sectional views illustrating an example of the method for manufacturing the semiconductor device according to the third embodiment. First, as illustrated in <FIG>, the frame <NUM>, the glass substrate <NUM>, and the metal plate <NUM> are mounted on a support substrate <NUM>. As necessary, the glass substrate <NUM> is provided with the opening portion <NUM>, and is provided with the metal films <NUM>, <NUM>, and <NUM> by means of plating processing or the like. Subsequently, a dummy member <NUM> is temporarily arranged at a position on the metal plate <NUM> at which the semiconductor chip <NUM> is to be provided.

Subsequently, as illustrated in <FIG>, the insulating films <NUM>, <NUM>, and <NUM> are provided on the inner side of the metal film <NUM> of the glass substrate <NUM>, in the gap between the glass substrate <NUM> and the metal plate <NUM>, in the gap between the glass substrate <NUM> and the frame <NUM>, and the like. The insulating films <NUM>, <NUM>, and <NUM> are, for example, epoxy resin or the like, and bond the glass substrate <NUM>, the metal plate <NUM>, and the frame <NUM> to each other.

Subsequently, the metal films 30A and 30B are formed on the glass substrate <NUM> and the frame <NUM> by means of plating processing or the like. Subsequently, as illustrated in <FIG>, the metal films <NUM>, <NUM>, and <NUM> are patterned using a lithography technology and an etching technology. Alternatively, the plating processing of the metal films 30A and 30B may be partial plating processing using a mask or the like. Note that the support substrate <NUM> is removed from the glass substrate <NUM> before or after patterning of the metal films <NUM>, <NUM>, and <NUM>.

Subsequently, as illustrated in <FIG>, the stacked wiring portions <NUM> and <NUM> are formed on the first surface 10A and the second surface 10B of the glass substrate <NUM>. The wirings <NUM> and <NUM> may be provided as multilayer wirings insulated by the interlayer insulating films <NUM> and <NUM>.

Subsequently, as illustrated in <FIG>, the hole <NUM> is formed, the dummy member <NUM> is removed, and the semiconductor chip <NUM> is bonded onto the metal plate <NUM>. By doing so, the dummy member <NUM> is replaced with the semiconductor chip <NUM>. The cover glass <NUM> is attached to the semiconductor chip <NUM> in advance by the rib <NUM>. Thereafter, the bonding wire <NUM> is connected between the bonding pad <NUM> of the semiconductor chip <NUM> and the bonding pad <NUM> of the stacked wiring portion <NUM>. In addition, the protective resin <NUM> is formed so as to cover the bonding wire <NUM>. As a result, the structure illustrated in <FIG> is obtained.

Thereafter, an assembly process is performed, and a CMOS image sensor module as illustrated in <FIG> can thus be formed.

<FIG> are schematic cross-sectional views illustrating modification examples of the semiconductor device according to the fourth embodiment. Each of <FIG> may be a CMOS image sensor module. A semiconductor device <NUM> indicated by the broken line frame may be the semiconductor device according to any one of the above embodiments.

In the module illustrated in <FIG>, a motherboard <NUM> has an opening portion <NUM> in a region thereof corresponding to the metal plate <NUM> and the semiconductor chip <NUM>. A metal plate <NUM> is provided on the rear surface of the motherboard <NUM> and inside the opening portion <NUM>. The metal plate <NUM> is bonded at an adhesive layer <NUM> thereof to the semiconductor device <NUM> through the opening portion <NUM>. For the metal plate <NUM>, as well as for the metal plate <NUM>, a material having high heat conductivity such as copper is used, for example. For the adhesive layer <NUM>, heat dissipation grease, epoxy resin, or the like is used, for example.

The motherboard <NUM> is connected to the electrode pad <NUM> of the semiconductor device <NUM> by a land grid array <NUM>. Although not illustrated, the motherboard <NUM> may perform wireless communication using an antenna of the semiconductor device <NUM>.

The screw <NUM> penetrates the metal plate <NUM>, the motherboard <NUM>, and the frame <NUM> of the semiconductor device <NUM> and reaches the housing <NUM>. As a result, the metal plate <NUM>, the motherboard <NUM>, the semiconductor device <NUM>, and the housing <NUM> are relatively secured as an integrated CMOS image sensor module.

Such a CMOS image sensor module can be incorporated in, for example, a camera. In this case, the metal plate <NUM> is physically connected to a housing (not illustrated) of the camera, and heat dissipation performance can be improved.

In the module illustrated in <FIG>, the screw <NUM> penetrates the metal plate <NUM> and the motherboard <NUM> and reaches the housing <NUM> without penetrating the semiconductor device <NUM>. As a result, the metal plate <NUM>, the motherboard <NUM>, and the housing <NUM> are relatively secured. The semiconductor device <NUM> is not secured by the screw <NUM>, but is secured to the metal plate <NUM> and the motherboard <NUM> by the adhesive layer <NUM> or the land grid array <NUM>. As a result, the metal plate <NUM>, the motherboard <NUM>, the semiconductor device <NUM>, and the housing <NUM> are relatively secured as an integrated CMOS image sensor module. The other components of the second modification example may be similar to the corresponding components of the first modification example. Therefore, the second modification example can exert similar effects to those of the first modification example.

In the module illustrated in <FIG>, the screw <NUM> penetrates the semiconductor device <NUM> and reaches the housing <NUM> without penetrating the metal plate <NUM> and the motherboard <NUM>. As a result, the semiconductor device <NUM> and the housing <NUM> are relatively secured. The metal plate <NUM> and the motherboard <NUM> are not secured by the screw <NUM>, but are secured to the semiconductor device <NUM> by the adhesive layer <NUM> or the land grid array <NUM>. As a result, the metal plate <NUM>, the motherboard <NUM>, the semiconductor device <NUM>, and the housing <NUM> are relatively secured as an integrated CMOS image sensor module. The other components of the third modification example may be similar to the corresponding components of the first modification example. Therefore, the third modification example can exert similar effects to those of the first modification example.

In the module illustrated in <FIG>, the metal plate <NUM> is bonded to the semiconductor device <NUM> at the adhesive layer <NUM> and is directly attached with the screw <NUM>. As a result, the metal plate <NUM>, the semiconductor device <NUM>, and the housing <NUM> are relatively secured.

Also, the motherboard <NUM> is provided below the metal plate <NUM> and includes a pin socket <NUM>. The semiconductor device <NUM> includes a pin grid array <NUM> electrically connected to the stacked wiring portion <NUM>. By inserting the pin grid array <NUM> of the semiconductor device <NUM> into the pin socket <NUM> of the motherboard <NUM>, the semiconductor device <NUM> is electrically connected to the motherboard <NUM> and secured to the motherboard <NUM>.

As a result, the metal plate <NUM>, the motherboard <NUM>, the semiconductor device <NUM>, and the housing <NUM> are relatively secured as an integrated CMOS image sensor module. The other components of the fourth modification example may be similar to the corresponding components of the first modification example. Therefore, the fourth modification example can exert similar effects to those of the first modification example.

Also, the motherboard <NUM> is provided below the metal plate <NUM> and includes a flexible connector <NUM>. The semiconductor device <NUM> includes a flexible structure <NUM> formed integrally with the stacked wiring portion <NUM>. For the flexible connector <NUM> and the flexible structure <NUM>, a low-resistance metal material such as copper is used, for example. Therefore, the flexible connector <NUM> and the flexible structure <NUM> can be used as wirings between the motherboard <NUM> and the semiconductor device <NUM>.

Also, the semiconductor device <NUM> is flexibly connected to the motherboard <NUM> by the flexible connector <NUM> and the flexible structure <NUM>. As a result, the metal plate <NUM>, the motherboard <NUM>, the semiconductor device <NUM>, and the housing <NUM> constitute an integrated CMOS image sensor module, but the semiconductor device <NUM> can move relatively to the motherboard <NUM> to some extent. The other components of the fifth modification example may be similar to the corresponding components of the first modification example. Therefore, the fifth modification example can exert similar effects to those of the first modification example.

The semiconductor device <NUM> illustrated in <FIG> includes a metal layer <NUM> provided between the metal plate <NUM> and the wiring <NUM>. The metal layer <NUM> is connected to the wiring <NUM>. The metal layer <NUM> is fixed at a predetermined potential (for example, the ground potential). For the metal layer <NUM>, a conductive material having high heat conductivity such as nickel and copper is used, for example. The metal layer <NUM> can improve heat conductivity between the metal plate <NUM> and the metal plate <NUM>. The metal layer <NUM> is electrically connected to the metal plate <NUM> via the wiring <NUM>, and can fix the metal plate <NUM> at a predetermined potential (for example, the ground potential). In addition, the metal layer <NUM> improves the mechanical strength of the stacked wiring portion <NUM> and has an electromagnetic shielding effect of protecting the semiconductor device <NUM> from external noise.

The metal layer <NUM> may be applied to any of the first to fifth modification examples. Therefore, the sixth modification example can exert similar effects to those of any of the first to fifth modification examples.

<FIG> is a schematic cross-sectional view illustrating a configuration example of a multi-chip module in which a plurality of semiconductor chips <NUM> and <NUM> is mounted on the same metal plate <NUM>. In the sixth modification example, the metal plate <NUM> functions as a common heat dissipation plate to the plurality of semiconductor chips <NUM> and <NUM>. Therefore, the plurality of semiconductor chips <NUM> and <NUM> is provided in the same opening portion <NUM>. The semiconductor chips <NUM> and <NUM> are not particularly limited, but the semiconductor chip <NUM> is, for example, a Time-of-Flight light emitting and receiving device (that is, a photodiode sensor). The semiconductor chip <NUM> may be, for example, a vertical cavity surface emitting laser (VCSEL). The dummy member <NUM> may be left between the semiconductor chip <NUM> and the semiconductor chip <NUM>. The other components of the sixth modification example may be similar to the corresponding components of the third embodiment illustrated in <FIG>.

<FIG> is a schematic cross-sectional view illustrating a configuration example of a multi-chip module in which the semiconductor chip <NUM> and the semiconductor chip <NUM> are mounted on separate metal plates <NUM> and <NUM>, respectively. In the seventh modification example, the metal plate <NUM> functions as a heat dissipation plate for the semiconductor chip <NUM>, and the metal plate <NUM> functions as a heat dissipation plate for the semiconductor chip <NUM>. Therefore, the plurality of semiconductor chips <NUM> and <NUM> is provided in separate opening portions <NUM> and <NUM>, respectively. The other components of the sixth modification example may be similar to the corresponding components of the third embodiment illustrated in <FIG>.

<FIG> is a diagram illustrating examples in which any of the embodiments according to the present technology is used as a CMOS image sensor.

An image capturing device according to any of the above embodiments can be used, for example, in various cases of sensing light such as visible light, infrared light, ultraviolet light, and X-rays as follows. That is, as illustrated in <FIG>, for example, any of the above embodiments can be used in a device used in a field of viewing in which an image provided for viewing is captured, a field of traffic, a field of home appliances, a field of medical care and health care, a field of security, a field of beauty, a field of sports, a field of agriculture, and the like.

Specifically, in the field of viewing, for example, any of the above embodiments can be used for a device for capturing an image to be provided for viewing, such as a digital camera, a smartphone, and a mobile phone with a camera function.

In the field of traffic, for example, any of the above embodiments can be used for a device to be provided for traffic, such as an in-vehicle sensor that captures images of the front, rear, surroundings, inside, and the like of an automobile, a monitoring camera that monitors traveling vehicles and roads, and a distance measuring sensor that measures a distance between vehicles and the like, for safe driving such as automatic stop, recognition of driver's condition, and the like.

In the field of home appliances, for example, any of the above embodiments can be used for a device to be provided in home appliances such as a television receiver, a refrigerator, and an air conditioner in order to capture an image of a gesture of a user and operate the home appliances in accordance with the gesture.

In the field of medical care and health care, for example, any of the above embodiments can be used for a device to be provided for medical care and health care, such as an endoscope and a device that performs angiography by receiving infrared light.

In the field of security, for example, any of the above embodiments can be used for a device to be provided for security, such as a monitoring camera for crime prevention and a camera for person authentication.

In the field of beauty, for example, any of the above embodiments can be used for a device to be provided for beauty, such as a skin measuring instrument for capturing an image of the skin and a microscope for capturing an image of the scalp.

In the field of sports, for example, any of the above embodiments can be used for a device to be provided for sports, such as an action camera and a wearable camera for sports applications and the like.

In the field of agriculture, for example, any of the above embodiments can be used for a device to be provided for agriculture, such as a camera for monitoring the condition of fields and crops.

Claim 1:
A semiconductor device comprising:
a glass substrate (<NUM>) that includes a first surface (10A), a second surface (10B) provided on an opposite side of the first surface, and a first side surface (10C) provided between the first surface and the second surface;
a wiring (<NUM>, <NUM>) that is provided on the first and second surfaces; characterised by
a metal film (<NUM>) that covers the first side surface; and
a frame (<NUM>) that is provided further on an outer side than the metal film, and that is bonded to the metal film at the first side surface.