Patent ID: 12191292

DETAILED DESCRIPTION OF THE INVENTION

Modes for carrying out the invention (hereinafter referred to as “embodiments”) will be described below by using the drawings. Incidentally, throughout the drawings, components identical or similar to each other are assigned the same reference character.

1. First Embodiment

[1-1. Configuration of Composite Integrated Film]

FIGS.1A to1Care a schematic plan view, a schematic cross-sectional view and a principal part enlarged view showing the configuration of a composite integrated film1according to a first embodiment.FIG.1Bshows a cross section of the composite integrated film1ofFIG.1Asliced along the line S1B-S1B.FIG.1Cmagnifies a principal part B1inFIG.1B. The composite integrated film1according to the first embodiment includes one or more components provided on one side of a base member thin film2. For convenience of the explanation, in the following description, a direction heading from the left to the right inFIG.1Awill be represented as an X direction, a direction heading from the top to the bottom inFIG.1Awill be represented as a Y direction, and a direction heading from the back to the front of the sheet ofFIG.1Awill be represented as a Z direction.

The base member thin film2is formed with polyimide-based resin, for example, and has an insulating property. The base member thin film2is formed in a shape like a flat rectangular prism or a thin flat plate as a whole, and a side in the Z direction is by far shorter than a side in the X direction and a side in the Y direction. The length of the side in the Z direction is less than or equal to 20 [μm], for example. In the following description, a surface of the base member thin film2on the Z direction side (i.e., a surface on the front side) will be referred to as a “base member front surface2A” or a “base member first surface”, and a surface on the opposite side (i.e., a surface on the back side) will be referred to as a “base member back surface2B” or a “base member second surface”. The base member back surface2B is formed extremely flat and its surface roughness (roughness) is desired to be less than or equal to 10 [nm].

Further, in a part of the base member thin film2roughly on the Y direction side (lower side inFIG.1A), base member through holes2V1,2V2and2V3are formed at three positions separate from each other in the X direction. Furthermore, in a part of the base member thin film2roughly on the −Y direction side (upper side inFIG.1A), a base member through hole2V4is formed at a position. For convenience of the explanation, the base member through holes2V1,2V2,2V3and2V4will also be referred to collectively as “base member through holes2V”.

The base member through hole2V as a penetration part, formed as a hole penetrating the base member thin film2in the Z direction, is a part that corresponds to a via in cases where the base member thin film2is regarded as a circuit board. Each of the base member through holes2V1,2V2and2V3has a shape like a square as the shape as viewed in the Z direction, that is, the shape inFIG.1A. In contrast, the shape of the base member through hole2V4as viewed in the Z direction is a rectangular shape that is long in the X direction. Incidentally, the shape of the base member through hole2V4is substantially the same as the shape of the base member through holes2V1,2V2and2V3when connected together in the X direction.

Provided on the base member front surface2A of the base member thin film2are a red light-emitting element11, a green light-emitting element12and a blue light-emitting element13, connection electrodes21,22,23and24, interlayer insulation films31and32, anode wiring members41,42and43, and cathode wiring members44,45and46.

On the base member front surface2A of the base member thin film2, the red light-emitting element11, the green light-emitting element12and the blue light-emitting element13(hereinafter also referred to collectively as “light-emitting elements10” or “elements”) are arranged in the X direction with prescribed spacing between each other in the vicinity of a center of the base member front surface2A in regard to the Y direction. Each of the red light-emitting element11, the green light-emitting element12and the blue light-emitting element13is in a shape like a rectangular prism that is relatively long in the Y direction and relatively short in the X direction and in the Z direction, in which a part on the Z direction side (e.g., a part that is approximately ⅗ to ⅔ in a thickness direction) is removed in a part occupying a −Y direction side (e.g., an approximately ⅖ to ⅓ range on the −Y direction side). In other words, as shown inFIG.1B, each of the red light-emitting element11, the green light-emitting element12and the blue light-emitting element13has a shape in which the height in the Z direction is low in the approximately ⅖ to ⅓ range on the −Y direction side.

The red light-emitting element11is, for example, an element made of a material based on gallium arsenide (GaAs), such as a red light-emitting diode. The green light-emitting element12is, for example, an element made of a material based on gallium nitride (GaN), such as a green light-emitting diode. The blue light-emitting element13is, for example, an element made of a material based on gallium nitride (GaN), such as a blue light-emitting diode. Namely, the light-emitting elements constituting the light-emitting elements10are each formed with two or more types of materials different from each other.

In the red light-emitting element11, on the surface on the Z direction side, a part occupying the vicinity of a center and the Y direction side is an anode terminal surface11A, and a part occupying the −Y direction side is a cathode terminal surface11K. Similarly, each of the green light-emitting element12and the blue light-emitting element13is provided with an anode terminal surface12A,13A and a cathode terminal surface12k,13K on the surface on the Z direction side.

The connection electrode21is made of a metallic material having electrical conductivity such as Au, Al, Cu, Ti or Pt and is provided so as to fill in the inside of the base member through hole2V1while stepping over to the base member front surface2A's side in the vicinity of an outer periphery of the base member through hole2V1, that is, so as to close and cover the base member through hole2V1and its vicinity from the Z direction side (i.e., from the base member front surface2A's side). On the connection electrode21, an electrode back surface21B as a surface on the −Z direction side is formed extremely flat similarly to the base member back surface2B and its surface roughness (roughness) is desired to be less than or equal to 10 [nm]. The connection electrode21includes an electrical path part (i.e., filling part) formed between the base member front surface2A and the base member back surface2B via the base member through hole2V1as the penetration part and a planar electrode surface20B (e.g., with the surface roughness less than or equal to 10 [nm]) formed on the base member back surface2B's side.

The connection electrode22,23has a configuration similar to the connection electrode21, and is formed so as to fill in the inside of the base member through hole2V2,2V3while stepping over to the base member front surface2A's side in the vicinity of an outer periphery of the base member through hole2V2,2V3. On the connection electrode22,23, an electrode back surface22B,23B as a surface on the −Z direction side is formed extremely flat (e.g., with the surface roughness less than or equal to 10 [nm]) similarly to the electrode back surface21B.

The connection electrode24has a configuration like the connection electrode21expanded in the X direction, and is formed so as to fill in the inside of the base member through hole2V4while stepping over to the base member front surface2A's side in the vicinity of an outer periphery of the base member through hole2V4. On the connection electrode24, an electrode back surface24B as a surface on the −Z direction side is formed extremely flat (e.g., with the surface roughness less than or equal to 10 [nm]) similarly to the electrode back surface21B.

For convenience of the explanation, the connection electrodes21,22,23and24will also be referred to collectively as “connection electrodes20” or “electrodes”. Further, in the following description, the electrode back surfaces21B,22B,23B and24B will also be referred to collectively as “electrode back surfaces20B” or “electrode surfaces”.

Further, in the composite integrated film1, the base member back surface2B of the base member thin film2and the electrode back surfaces20B form substantially the same flat surface. This flat surface will hereinafter be referred to also as a “film back surface1B”. Specifically, in the composite integrated film1, in regard to the connection electrode24, for example, the distance between the base member back surface2B and the electrode back surface24B in regard to the Z direction (i.e., normal direction of the base member back surface2B), namely, a film level difference LD as a “height of a level difference”, is extremely small as shown inFIG.1Cmagnifying the part B1as a part ofFIG.1B.

Specifically, in the composite integrated film1, the film level difference LD is desired to be less than or equal to 1/1000 in comparison with the shortest side on an XY plane (i.e., short side) in the external form of the base member back surface2B, that is, the shorter one of a distance L2X as the length of a side in the X direction and a distance L2Y as the length of a side in the Y direction.

Each of the interlayer insulation films31and32is formed with an insulating material. In each of the red light-emitting element11, the green light-emitting element12and the blue light-emitting element13, the interlayer insulation film31is provided in a range extending from a surface on the Y direction side to a Y direction side part of a surface on the Z direction side. In each of the red light-emitting element11, the green light-emitting element12and the blue light-emitting element13, the interlayer insulation film32is provided in a range extending from a surface on the −Y direction side to a −Y direction side part of a surface on the Z direction side.

The anode wiring member41is formed with a metallic material having electrical conductivity such as Au, Al, Cu, Ti or Pt. The anode wiring member41is formed to continuously cover front surfaces of the red light-emitting element11, the base member thin film2and the connection electrode21, mostly in the Y direction, from a Y direction side part of a surface of the red light-emitting element11on the Z direction side to a −Y direction-deviated part of a surface of the connection electrode21on the Z direction side. In short, the anode wiring member41connects the anode terminal surface11A of the red light-emitting element11and the front surface of the connection electrode21to each other, thereby electrically connecting the anode terminal surface11A and the electrode back surface21B.

The cathode wiring member44is formed with a metallic material having electrical conductivity similarly to the anode wiring member41. The cathode wiring member44is formed to continuously cover front surfaces of the red light-emitting element11, the base member thin film2and the connection electrode24, mostly in the Y direction, from a −Y direction side part of a surface of the red light-emitting element11on the Z direction side to a −X direction-deviated and Y direction-deviated part of a surface of the connection electrode24on the Z direction side. In short, the cathode wiring member44connects the cathode terminal surface11K of the red light-emitting element11and the front surface of the connection electrode24to each other, thereby electrically connecting the cathode terminal surface11K and the electrode back surface24B.

The anode wiring member42and the cathode wiring member45, respectively configured similarly to the anode wiring member41and the cathode wiring member44, are connected to the green light-emitting element12. Namely, the anode wiring member42connects the anode terminal surface12A of the green light-emitting element12and the front surface of the connection electrode22to each other, thereby electrically connecting the anode terminal surface12A and the electrode back surface22B. The cathode wiring member45connects the cathode terminal surface12K of the green light-emitting element12and the front surface of the connection electrode24to each other, thereby electrically connecting the cathode terminal surface12K and the electrode back surface24B.

The anode wiring member43and the cathode wiring member46, respectively configured similarly to the anode wiring member41and the cathode wiring member44, are connected to the blue light-emitting element13. Namely, the anode wiring member43connects the anode terminal surface13A of the blue light-emitting element13and the front surface of the connection electrode23to each other, thereby electrically connecting the anode terminal surface13A and the electrode back surface23B. The cathode wiring member46connects the cathode terminal surface13K of the blue light-emitting element13and the front surface of the connection electrode24to each other, thereby electrically connecting the cathode terminal surface13K and the electrode back surface24B.

For convenience of the explanation, the anode wiring members41,42and43and the cathode wiring members44,45and46will also be referred to collectively as “wiring members40”.

As above, in the composite integrated film1, the light-emitting elements10for the three colors are provided on the base member front surface2A's side of the base member thin film2, and the electrode back surfaces20B of the connection electrodes20electrically connected respectively to the light-emitting elements are exposed to the base member back surface2B's side of the base member thin film2while forming substantially the same flat surface as the base member back surface2B.

[1-2. Manufacture of Composite Integrated Film]

FIG.2is a flowchart showing a manufacturing procedure of the composite integrated film1according to the first embodiment.FIGS.3A to3Fare schematic cross-sectional views showing a manufacturing process of the composite integrated film1. As shown inFIG.2andFIGS.3A to3F, the composite integrated film1is formed stepwise on a formation substrate51by prescribed manufacturing equipment50according to various manufacturing processes similar to those for manufacturing generic semiconductors. Incidentally, the formation substrate51is formed with silicon similarly to the so-called wafer, and a formation surface52that is extremely flat is formed on a front surface of the formation substrate51. The surface roughness of the formation surface52is desired to be less than or equal to 10 [nm].

Specifically, upon starting the manufacturing procedure RT1of the composite integrated film (FIG.2), in the first step SP1, the manufacturing equipment50forms a thin film layer53with polyimide-based resin on the formation surface52of the formation substrate51as shown inFIG.3B. In this step SP1, the manufacturing equipment50forms the thin film layer53with a thickness less than or equal to 20 [μm], for example, by using a spin coater (not shown) or the like, for example. At that time, a lower surface of the thin film layer53becomes extremely flat since the lower surface is formed while being in close contact with the formation surface52.

In step SP2, as shown inFIG.3C, the manufacturing equipment50forms the base member thin film2by removing unnecessary parts from the thin film layer53by performing a patterning process by a method like lithography. In this step SP2, the base member through holes2V (the base member through holes2V1,2V4, etc.) are formed in the base member thin film2.

In step SP3, as shown inFIG.3D, the manufacturing equipment50forms the connection electrodes20(the connection electrodes21,24, etc.) by depositing a metallic material in ranges respectively covering the base member through holes2V by a method like lithography or vapor deposition, for example, and shifts to the next step SP4. At that time, a lower surface of the connection electrode20is formed while being in close contact with the formation surface52similarly to the case of the thin film layer53. Therefore, the electrode back surfaces20B (the electrode back surfaces21B,24B, etc.) as the lower surfaces of the connection electrodes20become extremely flat, and are situated on substantially the same flat surface as the lower surface of the thin film layer53, that is, the base member back surface2B of the base member thin film2.

In the step SP4, as shown inFIG.3E, the manufacturing equipment50transfers the light-emitting elements10(e.g., the red light-emitting element11) manufactured by prescribed LED manufacturing equipment (not shown) or the like onto prescribed positions on the base member front surface2A of the base member thin film2, and shifts to the next step SP5. At that time, the manufacturing equipment50can use a commonly known transfer technology like that disclosed in the Patent Reference 1, for example.

In the step SP5, as shown inFIG.3F, the manufacturing equipment50forms the interlayer insulation films31and32with a prescribed insulating material by a method like lithography or vapor deposition, for example, and thereafter forms the wiring members40(the anode wiring member41, the cathode wiring member44, etc.) with a prescribed metallic material. Thereafter, the manufacturing equipment50shifts to the next step SP6and ends the manufacturing procedure RT1of the composite integrated film. In the composite integrated film1manufactured as above, the base member back surface2B and the electrode back surfaces20B are in a state of being in contact with the surface (i.e., the formation surface52) of the formation substrate51.

FIG.4is a schematic plan view showing arrangement of the composite integrated films1on a wafer51.FIG.5is a schematic cross-sectional view slicing the wafer ofFIG.4along the line S5-S5. The manufacturing equipment50manufactures a plurality of composite integrated films1in a lump based on one formation substrate51(which corresponds to the so-called silicon wafer) similarly to cases of manufacturing generic semiconductor elements. Specifically, as shown inFIG.4andFIG.5, the manufacturing equipment50manufactures a plurality of composite integrated films1in a state of being arrayed like a grid, for example, by simultaneously executing or successively executing processes for manufacturing the plurality of composite integrated films1on the formation substrate51as the wafer. The wafer51and the plurality of composite integrated films1constitute a composite integrated film supply wafer. At least either the base member back surfaces2B or the electrode surfaces20B (21B-24B) of the plurality of composite integrated films1and the formation surface52as the surface of the wafer51are in contact with each other. Here, the surface roughness of the formation surface52of the wafer51is desired to be less than or equal to 10 [nm].

[1-3. Configuration of LED Display Device]

Next, an LED display device60in which a plurality of composite integrated films1have been installed will be described below.FIG.6is a schematic perspective view showing the configuration of the LED display device60. As shown inFIG.6, the LED display device60as a semiconductor composite device includes an LED display type display unit61(also referred to “display screen”), a frame62, a heat radiation member63, a connection cable64, a connection terminal unit65, a display driver66, and so forth. The LED display device60, which is referred to also as a micro-LED display, is a display device in which a set of LED elements of red, green and blue is provided corresponding to one pixel.

The LED display type display unit61has a configuration in which a great number of composite integrated films1(FIG.1A) are installed to be arranged like a grid in a display region that is set on a surface of a planar circuit board on the Z direction side (details will be described later). The frame62is formed in a shape like a rectangular frame with a prescribed steel material or the like, for example, and is attached to the LED display type display unit61to surround the outer periphery of the display region on the Z direction side of the LED display type display unit61.

The heat radiation member63is formed in a shape like a flat rectangular prism as a whole with a metallic material having relatively high thermal conductivity like aluminum, for example. The heat radiation member63is set to be in contact with the LED display type display unit61on the −Z direction side of the LED display type display unit61, that is, on a side opposite to the surface for displaying images and the like. The connection cable64is electrically connected to a prescribed control device (not shown) via the connection terminal unit65and thereby transmits and supplies an image signal, supplied from the control device, to the display driver66.

The display driver66as a drive circuit is electrically connected to the connection cable64and the LED display type display unit61. For example, the display driver66generates drive signals of red, green and blue based on the image signal supplied via the connection cable64and supplies drive currents based on these drive signals to the LED display type display unit61. Consequently, the LED display device60is capable of displaying an image based on the image signal supplied from the control device (not shown) or the like in the display region of the LED display type display unit61.

Next, the configuration of the LED display type display unit61will be described below.FIG.7is a schematic perspective view showing a process of sticking the composite integrated film1on a circuit board.FIG.8is a schematic cross-sectional view showing the process of sticking the composite integrated film1on the circuit board. As shown inFIG.7andFIG.8, the LED display type display unit61has a configuration in which the composite integrated films1have been stuck on a surface of a circuit board70on the Z direction side. Incidentally,FIG.7shows one composite integrated film1and a part of the circuit board70corresponding to the composite integrated film1as an extract from the LED display type display unit61.FIG.7shows a state before the composite integrated film1is stuck on the circuit board70.FIG.8shows a cross section corresponding toFIG.1B.

The circuit board70has a configuration in which surfaces of a base member part71on the −Z direction side and the opposite side are respectively covered by insulation layers72and73. The base member part71is formed with the so-called glass epoxy resin, that is, formed by impregnating glass fiber with epoxy resin and thermally hardening the impregnated glass fiber, for example, and has sufficient strength, insulation performance, etc. The insulation layers72and73are formed with thermosetting epoxy resin, for example, and have sufficient insulation performance.

Inside the circuit board70, a plurality of wiring members are provided, such as column wiring members74arranged mainly in the Y direction on a front surface and a back surface of the base member part71, row common wiring members75arranged mainly in the X direction, and internal wiring members76arranged to penetrate the base member part71. Among these wiring members, the column wiring members74and the row common wiring members75form an approximately grid-like wiring pattern. These wiring members are formed with a material having electrical conductivity, and are electrically connected to each other in an appropriate manner. For convenience of the explanation, the column wiring member74and the row common wiring member75will be referred to also as a “first direction wire” and a “second direction wire”, respectively.

In the circuit board70, a region corresponding to one composite integrated film1(referred to as a “sticking region77”) is provided with three column wiring connection pads81,82and83and one row common wiring connection pad84. The column wiring connection pads81,82and83are made of a material having electrical conductivity, expose their pad front surfaces81A,82A and83A to a surface of the circuit board70on the Z direction side (referred to as a “substrate front surface70A”), and are electrically connected to the column wiring members74inside the circuit board70. The row common wiring connection pad84is made of a material having electrical conductivity, exposes its pad front surfaces84A to the substrate front surface70A of the circuit board70, and is electrically connected to the row common wiring member75inside the circuit board70.

For convenience of the explanation, the column wiring connection pads81,82and83and the row common wiring connection pad84will be referred to collectively as “connection pads80”, and the pad front surfaces81A,82A,83A and84A will be referred to collectively as “pad front surfaces80A”.

Incidentally, in the circuit board70, the positions of the pad front surfaces81A,82A,83A and84A in the sticking region77are in a mirror image relationship with the positions of the electrode back surfaces21B,22B,23B and24B on the film back surface1B of the composite integrated film1. Further, in the circuit board70, the sizes of the pad front surfaces81A,82A,83A and84A in the sticking region77are equivalent to or one size larger than the sizes of the electrode back surfaces21B,22B,23B and24B on the film back surface1B of the composite integrated film1.

Furthermore, in the circuit board70, the substrate front surface70A is formed in an extremely flat planar shape. Namely, in the circuit board70, both of an insulation front surface73A as a surface of the insulation layer73on the Z direction side and the pad front surface80A are extremely flat, are planes (i.e., flat surfaces) parallel to each other, and the distance (i.e., level difference) between them in regard to the Z direction is also extremely small.

[1-4. Manufacture of Circuit Board and LED Display Type Display Unit]

Next, the manufacture of the circuit board70and the LED display type display unit61will be respectively described below.FIGS.9A to9Care schematic cross-sectional views showing a manufacturing process of the circuit board. First, the circuit board70is manufactured by circuit board manufacturing equipment90through a plurality of processes as shown inFIGS.9A to9C, for example. The circuit board manufacturing equipment90uses commonly known semiconductor manufacture technologies such as technologies like photolithography, vapor deposition, masking and etching, or various technologies regarding the manufacture of circuit boards.

Specifically, first, as shown inFIG.9A, the circuit board manufacturing equipment90forms the base member part71by a method like etching into a state in which wiring members are arranged on the surfaces of and inside the base member part71and the surfaces of the base member part71are mostly covered by the insulation layers72and73. However, at that time, the circuit board70is in a state in which there have been formed aperture parts73H, where wiring members are exposed without being covered by the insulation layer73, at positions where the connection pads80will be provided.

Subsequently, as shown inFIG.9B, on the Z direction side of the base member part71, the circuit board manufacturing equipment90deposits a material having electrical conductivity, such as metal, on the aperture parts73H and their vicinities and thereby fills in the inside of the aperture parts73H with the material.

Further, the circuit board manufacturing equipment90executes processing like chemical mechanical polishing so that a polish line PL shown inFIG.9Bbecomes the surface on the Z direction side. Consequently, the circuit board manufacturing equipment90is capable of manufacturing the circuit board70in which the substrate front surface70A is extremely flat, namely, both of the insulation front surface73A and the pad front surface80A are extremely flat, and the level difference between them is extremely small as shown inFIG.9C. Specifically, in the circuit board70, the surface roughness (roughness) of the insulation front surface73A and that of the pad front surface80A are both desired to be less than or equal to 10 [nm]. Further, in the circuit board70, the distance between the insulation front surface73A and the pad front surface80A in regard to the Z direction (i.e., normal direction of the insulation front surface73A), namely, a substrate level difference as the “level difference or level difference height”, is desired to be less than or equal to 1/1000 in comparison with the shorter one of the distance L2X and the distance L2Y (i.e., the shortest side) in the composite integrated film1(FIG.1A).

The circuit board70is provided with as many sticking regions77as the pixels (picture elements) forming an image. For example, when the circuit board70supports a resolution compatible with the so-called 4k (3840×2160 pixels), the sticking regions77(FIG.7) are arranged like a grid having 3840 grid points in the X direction and 2160 grid points in the Y direction.

Next, the manufacture of the LED display device60will be described below.FIG.10is a flowchart showing a manufacturing procedure of the LED display device60.FIGS.11A to11Eare schematic diagrams showing a manufacturing process of the LED display device60. As shown inFIG.10andFIGS.11A to11E, the LED display type display unit61is manufactured by prescribed display manufacturing equipment100stepwise through a plurality of processes.

In the display manufacturing equipment100, the circuit board70(FIG.7andFIG.8) is set at a prescribed circuit board setting position with the surface of the insulation layer73facing upward, while the formation substrate51(FIG.4andFIG.5) is set at a prescribed formation substrate setting position with the face of the formation surface52facing upward.

Upon starting the manufacturing procedure RT2of the LED display type display unit (FIG.2), the display manufacturing equipment100shifts to the first step SP21, picks up one composite integrated film1from the formation substrate51by using a transfer stamp101as shown inFIG.11A, and shifts to the next step SP22.

In the step SP22, the display manufacturing equipment100sticks the composite integrated film1on the circuit board70as shown inFIG.11B, and shifts to the next step SP23. Specifically, first, the display manufacturing equipment100moves the transfer stamp101that picked up one composite integrated film1to a position above (on the Z direction side of) a sticking region77of the circuit board70on which no composite integrated film1has been stuck yet. This brings the composite integrated film1to a state in which the base member back surface2B and the electrode back surfaces20B respectively face the insulation front surface73A and the pad front surfaces80A of the circuit board70as shown inFIG.7.

Subsequently, the display manufacturing equipment100moves the transfer stamp101downward and thereby makes the film back surface1B of the composite integrated film1contact the substrate front surface70A of the circuit board70and makes the base member back surface2B and the electrode back surfaces20B respectively contact the insulation front surface73A and the pad front surfaces80A as shown inFIG.8.

Further, the display manufacturing equipment100makes the transfer stamp101apply prescribed pressure to (press against) the composite integrated film1in the −Z direction (i.e., downward). Accordingly, intermolecular forces act between the base member back surface2B and the insulation front surface73A and between the electrode back surfaces20B and the pad front surfaces80A, and the composite integrated film1is stuck on the circuit board70by the intermolecular forces.

At that time, the electrode back surfaces20B are electrically connected respectively to the pad front surfaces80A by the bonding by the intermolecular forces. Namely, the connection electrodes21,22and23are electrically connected respectively to the column wiring connection pads81,82and83. Further, the connection electrode24is electrically connected to the row common wiring connection pad84.

In the step SP23, the display manufacturing equipment100judges whether or not the composite integrated films1have been stuck on all the sticking regions77of the circuit board70. When a negative result is obtained by the judgment, the display manufacturing equipment100successively sticks the composite integrated films1on remaining sticking regions77by returning to the step SP21and repeating the series of processes.

In contrast, when an affirmative result is obtained in the step SP23, it means that sticking the composite integrated films1on all sticking regions77of the circuit board70is completed. In this case, the display manufacturing equipment100shifts to the next step SP24, drives each composite integrated film1by connecting a test control unit103to the circuit board70as shown inFIG.11Cand supplying a prescribed image signal to the circuit board70, and shifts to the next step SP25.

In the step SP25, the display manufacturing equipment100tests a characteristic of each composite integrated film1, and shifts to the next step SP25. Specifically, the display manufacturing equipment100places a light receiving unit104at a position to face the circuit board70, detects information such as the amount of light received from each composite integrated film1, and obtains the characteristic of each composite integrated film1based on the detected information.

In the step SP26, the display manufacturing equipment100judges whether or not there is a position from which a normal characteristic was not obtained, namely, an abnormal position (referred to also as a defective position), based on the characteristic obtained from each composite integrated film1. Specifically, the display manufacturing equipment100uses, for example, the magnitude of the light amount obtained with respect to the current supplied to the composite integrated film1as the characteristic, and has previously stored a normal range in regard to this characteristic. Then, the display manufacturing equipment100judges the position of the composite integrated film1having the characteristic outside the normal range as an abnormal position.

When an affirmative result is obtained by the judgment, it means that repair work has to be performed on the abnormal position, specifically, that the composite integrated film1at the abnormal position should be changed (i.e., replaced). In this case, the display manufacturing equipment100shifts to the next step SP27.

In the step SP27, the display manufacturing equipment100peels off the composite integrated film1at the abnormal position from the circuit board70, and shifts to the next step SP28. Specifically, the display manufacturing equipment100first places a peeling head105close to the abnormal position as shown inFIG.11Dand lowers the bonding force of the composite integrated film1to the circuit board70by discharging a prescribed solvent towards the abnormal position. Subsequently, as shown inFIG.11E, the display manufacturing equipment100peels off the composite integrated film1from the circuit board70by moving the transfer stamp101to the abnormal position, moving the transfer stamp101in the −Z direction, making the transfer stamp101suck the composite integrated film1, and moving the transfer stamp101in the Z direction.

At that time, even though the bonding with the film back surface1B of the composite integrated film1by the intermolecular forces is removed, the substrate front surface70A of the circuit board70is hardly damaged and maintains its physical shape excellently. In other words, the circuit board70is capable of maintaining the extremely flat state at the abnormal position, on all of the insulation front surface73A and the pad front surfaces80A. Thereafter, the display manufacturing equipment100conveys the peeled composite integrated film1to a prescribed abnormal film collection part.

In the step SP28, the display manufacturing equipment100sticks a new composite integrated film1on the abnormal position of the circuit board70, that is, the position from which the former composite integrated film1was peeled off, and shifts to the next step SP29. Specifically, the display manufacturing equipment100sticks the new composite integrated film1on the abnormal position of the circuit board70and has the electrode back surfaces20B of the composite integrated film1and the pad front surfaces80A of the circuit board70bonded to each other by the intermolecular forces by executing the same process as the step SP21and the step SP22.

In the step SP29, the display manufacturing equipment100judges whether or not the repair work has been completed for all of the detected abnormal positions. When a negative result is obtained by the judgment, the display manufacturing equipment100executes the changing (replacement) of the composite integrated film1also for the remaining abnormal positions by returning to the step SP27and repeating the series of processes.

In contrast, when an affirmative result is obtained in the step SP29, it means that the process of replacing the composite integrated film1has been completed at all the abnormal positions and thus the test of the characteristic has to be performed again. In this case, the display manufacturing equipment100returns to the step SP24and repeats the series of processes. Incidentally, when the display manufacturing equipment100executes the process of the step SP25second time or later, the display manufacturing equipment100may test the characteristic exclusively at the abnormal positions detected in the previous test.

In contrast, when a negative result is obtained in the step SP26, it means that the characteristics of all the composite integrated films1stuck on the circuit board70are in the normal range and the composite integrated films1are capable of normally operating as the LED display type display unit61, namely, that the LED display type display unit61has been completed. In this case, the display manufacturing equipment100shifts to the next step SP30.

In the step SP30, the display manufacturing equipment100ends the LED display type display unit manufacturing procedure RT2. Incidentally, the display manufacturing equipment100is capable of successively manufacturing LED display type display units61by repeatedly executing this LED display type display unit manufacturing procedure RT2.

[1-5. Effect and Other Features]

In the above-described configuration, in the composite integrated film1according to the first embodiment, the film back surface1B made up of the base member back surface2B and the electrode back surfaces20B is formed extremely flat.

Specifically, in the composite integrated film1, the base member back surface2B and the electrode back surface20B are formed as planes (i.e., flat surfaces) parallel to each other, the surface roughness on each of them is made to be less than or equal to 10 [nm], and the level difference as the distance between them in regard to the Z direction is made to be less than or equal to 1/1000 of a short side (e.g., shortest side) on an XY plane in the external form of the base member back surface2B.

Further, in the circuit board70according to this embodiment, the substrate front surface70A made up of the insulation front surface73A and the pad front surfaces80A is formed extremely flat. Specifically, in the circuit board70, by executing the chemical mechanical polishing (FIG.9C), the insulation front surface73A and the pad front surface80A are formed as planes (i.e., flat surfaces) parallel to each other, the surface roughness on each of them is made to be less than or equal to 10 [nm], the distance between them in regard to the Z direction (i.e., level difference) is also made to be extremely small, and a substantially single flat plane (i.e., a single flat surface or a same flat surface) is formed.

Accordingly, in the LED display type display unit61according to this embodiment, the electrode back surfaces20B of the composite integrated film1and the pad front surfaces80A of the circuit board70can be bonded by the intermolecular forces and physically and electrically connected to each other by just placing the composite integrated film1in contact with the sticking region77of the circuit board70and applying prescribed pressure. In other words, in the LED display type display unit61, the composite integrated film1and the circuit board70can be electrically connected to each other by just sticking the composite integrated film1on the circuit board70, without the need of executing a wiring formation process by use of bonding wires and lithography, an annealing process for improving the degree of contact between a semiconductor surface and a wiring material, and so forth. Therefore, in the LED display type display unit61, applying high temperature to the circuit board70is unnecessary and causing serious damage to the circuit board70can be avoided.

In this case, in the LED display type display unit61, there is a possibility that a boundary line between the base member back surface2B and the electrode back surface20B on the composite integrated film1and a boundary line between the insulation front surface73A and the pad front surface80A on the circuit board70do not necessarily coincide with each other. Namely, in the LED display type display unit61, there is a possibility that the boundary line between the base member back surface2B and the electrode back surface20B makes contact with the pad front surface80A, for example. However, on the composite integrated film1, the base member back surface2B is extremely flat similarly to the electrode back surface20B and the level difference between the base member back surface2B and the electrode back surface20B is extremely small. Therefore, in the LED display type display unit61, the bonding between the pad front surface80A and the electrode back surface20B by the intermolecular forces is not impeded by the base member back surface2B and the bonding force between the composite integrated film1and the circuit board70can be rather increased due to intermolecular forces acting between the pad front surface80A and the base member back surface2B.

Further, in the LED display type display unit61, the intermolecular forces to the base member back surface2B of the composite integrated film1can act also in a part of the circuit board70other than the pad front surfaces80A, that is, also on the insulation front surface73A. Accordingly, in the LED display type display unit61, the state with the composite integrated films1stuck on the circuit board70can be maintained excellently.

Incidentally, there are cases where an adhesive agent is used for bonding two objects to each other. As the adhesive agent, there are adhesive agents that exhibit the adhesive function by using the intermolecular forces. Further, the adhesive agent is generally in the form of liquid, and the adhesive agent is applied to bonding surfaces of the two objects, is made to harden in a state of being sandwiched between the bonding surfaces, and thereby reaches the state of bonding the two objects together. When such an adhesive agent is used, in order to separate the already bonded objects from each other, it is necessary to physically break the hardened adhesive agent and there is a danger of damaging the objects when breaking the hardened adhesive agent.

Furthermore, at a part where electrical joining such as joining of electrodes of a circuit board and electrodes of an element is required, for example, alloy due to a eutectic of the electrodes is formed by bump connection in many cases. In such cases, although it is possible to remove the bump connection by laser removal or the like, for example, damage is caused to no small extent especially to the electrodes of the circuit board.

In contrast, the LED display type display unit61according to this embodiment realizes the physical and electrical connection by placing the film back surface1B of the composite integrated film1and the substrate front surface70A of the circuit board70in direct connection with each other and letting the intermolecular forces directly act between the film back surface1B and the substrate front surface70A, without using such an adhesive agent. Thus, in this embodiment, when an abnormal position (defective position) is detected in the manufacturing process of the LED display type display unit61, the composite integrated film1can be peeled off with extreme ease and practically without damaging the circuit board70, and a new composite integrated film1can be stuck on the same position (FIG.10andFIGS.11A to11E).

Further, when no abnormal position is detected in the manufacturing process of the LED display type display unit61, the LED display type display unit61immediately becomes the finished product (FIG.10, step SP26). In other words, in the manufacturing process of the LED display type display unit61, by the joining of the composite integrated films1to the circuit board70by the intermolecular forces, the LED display type display unit61reaches a state in which the composite integrated films1and the circuit board70are electrically connected to each other and the joined state can be maintained to some extent. With the LED display type display unit61in this state, it is possible to execute the operation test by supplying current to each composite integrated film1and to change each composite integrated film1practically without damaging the circuit board70. Furthermore, in the LED display type display unit61, a part that has been confirmed to include no abnormal position can immediately be considered to be in the completed state, that is, a state in which there is no defective position and each composite integrated film1is fixed with necessary and sufficient strength, since the provisional fixation condition has sufficient joint strength. Consequently, the LED display type display unit61is capable of significantly decreasing the defective product occurrence rate and remarkably increasing the ratio of non-defective products (the so-called manufacturing yield).

Moreover, when an abnormal position is detected in the manufacturing process of the LED display type display unit61, the defect can be eliminated by peeling off the composite integrated film1at the abnormal position through the removal of the bonding by the intermolecular forces and sticking a new composite integrated film1on the same position. Therefore, in the LED display type display unit61, it is unnecessary to provide redundant circuits, redundant elements, etc. disclosed in the Patent Reference 1 and the Patent Reference 2, and the spacing between the sticking regions77on the circuit board70can be reduced to the bare minimum. Consequently, in the LED display type display unit61and the LED display device60equipped with the LED display type display unit61, it is possible to increase the degree of integration of the display pixels, i.e., the packaging density or the pixel density, and to display high-resolution images.

Parenthetically, in regard to the composite integrated film1, it is also possible to consider, for example, a method like providing a circuit for detecting a defect, pads for letting probes make contact thereto, or the like on the composite integrated film and executing the test at a stage before sticking the composite integrated film on the circuit board70. However, in this method, the area of the composite integrated film increases for providing the circuit, pads or the like, and thus the pixel density in the state of having been stuck on the LED display type display unit61decreases. Further, since this method requires to precisely place tester probes or the like in contact with the pads or the like at the time of the test, there is a possibility to cause a great increase in the number of man-hours for the work.

In contrast, in this embodiment, the test is conducted in the state in which the composite integrated films1have been stuck on the circuit board70to be used as the actual product, and the changing of the composite integrated film1is not executed if the test result is normal, and thus the manufacture can be carried out with extremely high efficiency.

Further, in this embodiment, it is unnecessary to provide extra circuits, probes or the like, and thus the area of the base member thin film2, namely, the area necessary for one pixel, can be reduced to the minimum and the pixel density in the state of having been stuck on the LED display type display unit61can be increased.

Furthermore, in the manufacturing process, the composite integrated film1is manufactured in a way like successively stacking parts on the formation surface52formed extremely flat (FIG.2andFIG.3). Therefore, the composite integrated film1does not require to specially execute a process for flattening the film back surface1B, and can be manufactured with ease in the state in which the film back surface1B is extremely flat, namely, all of the base member back surface2B and the electrode back surfaces20B are extremely flat, and the level difference between the base member back surface2B and the electrode back surface20B is extremely small.

According to the configuration described above, in the composite integrated film1, the film back surface1B made up of the base member back surface2B and the electrode back surfaces20B is formed extremely flat. Further, in the circuit board70, the substrate front surface70A made up of the insulation front surface73A and the pad front surfaces80A is formed extremely flat. Therefore, in the LED display type display unit61, the characteristic of each composite integrated film1can be tested by operating the composite integrated film1in the state in which the electrode back surfaces20B of the composite integrated film1and the pad front surfaces80A of the circuit board70are physically and electrically connected to each other by the bonding by the intermolecular forces, and the composite integrated film1at the abnormal position can be changed with ease. Accordingly, the LED display type display unit61is capable of remarkably increasing the manufacturing yield while increasing the packaging density.

2. Second Embodiment

FIGS.12A and12Bare a schematic plan view and a schematic cross-sectional view showing the configuration of a composite integrated film201according to a second embodiment. In the above-described first embodiment, the description of the composite integrated film1was given of the case where each connection electrode20(e.g., the connection electrode21) is formed in a shape filling in the whole region of the base member through hole2V (e.g., the base member through hole2V1) formed in the base member thin film2(FIGS.1A to1C). However, as shown inFIGS.12A and12Brespectively corresponding toFIGS.1A and1B, for example, it is also possible in the composite integrated film201to form each connection electrode221,222,223in a shape filling in only a part of the base member through hole2V1,2V2,2V3. The point is that it is permissible if a part of the connection electrode20(e.g., the connection electrode21) or the wiring member40(e.g., the anode wiring member41) steps over to the base member thin film2and the light-emitting element10(e.g., the red light-emitting element11) from the inside of the base member through hole2V (e.g., the base member through hole2V1) and thereby forms electrical connection from the electrode back surface20B (e.g., the electrode back surface21B) to the terminal surface (e.g., the anode terminal surface11A). On top of this condition, when the composite integrated film201has been stuck on the circuit board70, it is desirable if each electrode back surface20B (e.g., the electrode back surface21B) as the surface of the connection electrode20(e.g., the connection electrode21) on the −Z direction side is flat, the electrode back surface20B (e.g., the electrode back surface21B) and the base member back surface2B form substantially the same plane (namely, a single flat surface or a common flat surface) as, and the flat surface has a sufficient area. With this configuration, each connection electrode20(e.g., the connection electrode21) can be joined to the connection pad80(e.g., the column wiring connection pad81) of the circuit board70(e.g.,FIG.7) with sufficiently strong intermolecular forces and the electrically connected state can be maintained between the connection electrode20and the connection pad80. The same applies to the connection electrode24.

3. Third Embodiment

FIG.13is a schematic plan view showing the configuration of a composite integrated film301according to a third embodiment. In the above-described first and second embodiments, the description was given of the case where the base member through holes2V1,2V2and2V3are formed in the base member thin film2as through holes independent of each other in the composite integrated film1,201(FIGS.1A to1C,FIGS.12A and12B). However, as in the composite integrated film301shown inFIG.13, for example, it is also possible to provide one through hole302V1that is long in the X direction in a base member thin film302and provide connection electrodes321,322and323that fill in parts of the through hole302V1to be separate from each other in the X direction. In this case, it is permissible if surfaces of the connection electrodes321,322and323on the −Z direction side are flat, have sufficient areas, and are electrically isolated from each other.

4. Fourth Embodiment

FIGS.14A and14Bare a schematic plan view and a schematic cross-sectional view showing the configuration of a composite integrated film401according to a fourth embodiment.FIG.14Bshows a cross section taken along the line S14B-S14B inFIG.14A. In the above-described first to third embodiments, the description of the composite integrated films1,201and301was given of the case where the base member through holes2V1,2V2and2V3whose peripheries are surrounded are formed inside the base member thin film2and the connection electrodes21,22and23that fill in the base member through holes2V1,2V2and2V3are provided (FIGS.1A to1C,FIGS.12A and12B,FIG.13). However, as in the composite integrated film401shown inFIGS.14A and14Bcorresponding toFIGS.1A and1B, for example, it is also possible to provide a base member thin film402with notch parts402C1,402C2and402C3as voids extending inward from the outer periphery instead of the base member through holes2V1,2V2and2V3. In this case, it is possible to provide connection electrodes421,422and423respectively in shapes filling in only parts of the notch parts402C1,402C2and402C3. The same applies to the connection electrode24.

5. Fifth Embodiment

FIG.15is a schematic perspective view showing a process of sticking the composite integrated film1(or201,301or401) on a circuit board570.FIG.16is a schematic cross-sectional view showing the process of sticking the composite integrated film1on the circuit board570shown inFIG.15. In the above-described first to fourth embodiments, the description was given of the case where the substrate front surface70A of the circuit board70is provided with the connection pads80(the column wiring connection pads81,82and83and the row common wiring connection pads84) at positions corresponding to the connection electrodes20of the composite integrated films1. However, as in the circuit board570shown inFIG.15andFIG.16corresponding toFIG.7andFIG.8, for example, it is also possible to provide sub-connection pads591,592and593made of an electrically conductive material at positions facing the base member back surface2B of the composite integrated film1, in addition to the connection pads80. These sub-connection pads591,592and593make their pad front surfaces591A,592A and593A join to the base member back surface2B (i.e., parts other than the electrode back surfaces20B) of the composite integrated film1by the intermolecular forces, and thus can contribute to the maintenance of the state with the composite integrated film1stuck on the circuit board70. Further, since the sub-connection pads591,592and593are properly connected to the column wiring members74and so forth inside the circuit board570, heat generated in the composite integrated film1can be efficiently transmitted to the inside of the circuit board570, that is, the sub-connection pads591,592and593can function as heat radiation members. Furthermore, since the sub-connection pads591,592and593are properly connected to the column wiring members74and so forth, the sub-connection pads591,592and593can also be used for measurement, test or the like of an electrical characteristic, by placing probes, connected to a prescribed test jig, in contact with the sub-connection pads in a test or the like of the circuit board70, for example.

6. Other Embodiments

In the above-described first to fifth embodiments, the description was given of the case where the base member thin film2is formed in a rectangular shape as viewed in the Z direction. However, the base member thin film2may also be formed in a different shape such as a triangular shape, a hexagonal shape, an octagonal shape or a circular shape. For example, the shape may be determined depending on the purpose, such as a shape with which the manufacture on the formation substrate51can be performed efficiently at the time of manufacturing the composite integrated film1or a shape with which the plurality of composite integrated films1can be arranged efficiently on the circuit board70.

In the above-described embodiments, the description was given of the case where one composite integrated film1is made to correspond to one pixel (picture element) by providing one base member thin film2with one red light-emitting element11, one green light-emitting element12and one blue light-emitting element13. However, it is also possible to make one composite integrated film correspond to a plurality of pixels, such as making one composite integrated film correspond to two pixels by providing a base member thin film having a size and a shape corresponding to two base member thin films2with two red light-emitting elements11, two green light-emitting elements12and two blue light-emitting elements13, for example.

In the above-described embodiments, the description of the composite integrated film1was given of the case where three types of light-emitting elements (the red light-emitting element11, the green light-emitting element12and the blue light-emitting element13) respectively emitting light of three colors (red, green and blue) different from each other are provided on the base member front surface2A of the base member thin film2(FIGS.1A to1C). However, it is also possible to provide two or less types or four or more types of light-emitting elements respectively emitting light of colors different from each other or the same color. Further, it is possible to provide an electronic element having a variety of function such as a light receiving element, and it is also possible to provide a plurality of types of elements in combination and form a variety of device using the combination of the plurality of types of elements. For example, an image sensor device may be formed instead of the LED display device60by providing p-n junction photodiodes on the base member front surface2A. It is also possible, for example, to form a contact area sensor device (so-called touch panel) instead of the LED display device60by providing capacitance devices or the like on the base member front surface2A. In these cases, the number of connection electrodes connected to each element is not limited to two but can also be three or more.

In the above-described embodiments, the description was given of the case where the anode wiring member41is directly connected to the anode terminal surface11A and the connection electrode21and the cathode wiring member44is directly connected to the cathode terminal surface11K and the connection electrode24in regard to the red light-emitting element11, for example (FIGS.1A to1C). However, it is also possible, for example, to provide a contact electrode between the anode terminal surface11A and the anode wiring member41and between the cathode terminal surface11K and the cathode wiring member44. With this configuration, each part where a semiconductor and a metal are connected together forms the so-called Schottky connection and the occurrence of nonlinear resistance can be avoided. The same applies to the green light-emitting element12and the blue light-emitting element13.

In the above-described embodiments, the description was given of the case where the light-emitting elements10, the connection electrodes20, the interlayer insulation films31and32and the wiring members40are provided on the base member thin film2in the composite integrated film1(FIG.1). However, it is also possible, for example, to provide the composite integrated film with a variety of component or material such as a surface protection film, a reflector or a heat radiation material, or a combination of some of them.

In the above-described embodiments, the description was given of the case where the formation substrate51having the extremely flat formation surface52is used in the manufacturing process of the composite integrated film1(FIG.3A). However, it is also possible, for example, to use a formation substrate having a planarizing layer or a formation substrate after undergoing processing such as polishing.

In the above-described embodiments, the description was given of the case where the light-emitting elements10manufactured by prescribed LED manufacturing equipment or the like are transferred onto the base member front surface2A of the base member thin film2in the manufacturing process of the composite integrated film1(FIG.2, step SP4). However, it is also possible, for example, to form the light-emitting elements10by executing various manufacturing processes like those for various semiconductors on the base member front surface2A.

In the above-described embodiments, the description was given of the case where the connection electrodes20and the wiring members40are provided successively by processes independent of each other in the manufacturing process of the composite integrated film1(FIGS.3A to3F). However, it is also possible, for example, to form the connection electrodes20and the wiring members40at the same time with the same material and integrate together parts to be electrically connected to each other such as the connection electrode21and the anode wiring member41, for example.

In the above-described embodiments, the description was given of the case where the step SP4for transferring the light-emitting elements10is executed after the step SP3for forming the connection electrodes20in the manufacturing process of the composite integrated film1. However, it is also possible, for example, to form the connection electrodes20after transferring the light-emitting elements10. Further, in this case, it is also possible to form the connection electrodes20and the wiring members40in a lump as mentioned above.

In the above-described embodiments, the description was given of the case where one composite integrated film1is picked up from the formation substrate51and stuck on the circuit board70by the transfer stamp101in the manufacturing process of the LED display type display unit61(FIG.10, steps SP21and SP22andFIGS.11A and11B). However, the embodiments are not limited to this case and it is also possible, for example, to pick up a plurality of composite integrated films1from the formation substrate51and stick the plurality of composite integrated films1on the circuit board70by using a transfer stamp capable of picking up a plurality of composite integrated films1in a lump.

In the above-described embodiments, the description was given of the case where pressure is applied when sticking the composite integrated film1on the circuit board70by using the transfer stamp101in the manufacturing process of the LED display type display unit61(FIG.10, step SP22). However, it is also possible, for example, to apply a certain level of heat together with pressure.

In the above-described embodiments, the description was given of the case where the composite integrated film1is peeled off from the circuit board70after weakening the bonding by the intermolecular forces by discharging a prescribed solvent from the peeling head105towards the abnormal position in the case where the abnormal position is detected in the manufacturing process of the LED display type display unit61(FIG.10, step SP27). However, it is also possible, for example, to peel off the composite integrated film1from the circuit board70after weakening the bonding by the intermolecular forces by a different method, or without weakening the bonding by the intermolecular forces.

In the above-described embodiments, the description was given of the case where the LED display type display unit61is considered to have been completed in the state in which the connection electrodes20of the composite integrated films1and the connection pads80of the circuit board70are bonded to each other just by the intermolecular forces in the case where no abnormal position is detected in the manufacturing process of the LED display type display unit61(FIG.10, step SP26). However, it is also possible, for example, to further increase the joint strength between the connection electrodes20and the connection pads80by forming eutectic bonds (i.e., eutectic joints) between the connection electrodes20and the connection pads80by applying at least one of high pressure and heat in the case where no abnormal position is detected (the case of the negative result in the step SP26). In this case, in the LED display type display unit61, the state in which the connection electrodes20and the connection pads80are bonded to each other just by the intermolecular forces can be regarded as a state of “provisional fixation” in which the connection electrodes20and the connection pads80are electrically connected to each other and fixed to each other by relatively weak force allowing for easy replacement, and the state in which the eutectic bonds have been formed can be regarded as a state of “full fixation” in which the connection electrodes20and the connection pads80are firmly fixed to each other by relatively strong force at a level of preventing easy peeling.

In the above-described embodiments, the description was given of the case where the circuit board70is formed in a planar shape and the LED display device60is formed as a so-called flat panel display by forming the base member part71of the circuit board70with glass epoxy resin. However, it is also possible, for example, to form an LED display device as a flexible display capable of curving and bending by using a flexible substrate having flexibility instead of the circuit board70.

It is also possible to arbitrarily combine two or more of the above-described embodiments.

In the above-described embodiments, the description was given of the case where the composite integrated film1as a composite integrated film is formed with the base member thin film2as a base member thin film, the base member through holes2V as penetration parts, the connection electrodes20as electrodes and the light-emitting elements10as elements. However, it is also possible to form the composite integrated film with a base member thin film made in a variety of different configuration, penetration parts, electrodes and elements.

The embodiments can be used for an LED display formed by arranging a plurality of LEDs, for example.

DESCRIPTION OF REFERENCE CHARACTERS

1,201,301,401: composite integrated film,1B: film back surface,2: base member thin film,2A: base member front surface (base member first surface),2B: base member back surface (base member second surface),2V,2V1,2V2,2V3,2V4: base member through hole (penetration part),10: light-emitting elements,11: red light-emitting element,12: green light-emitting element,13: blue light-emitting element,11A,12A,13A: anode terminal surface,11K,12K,13K: cathode terminal surface,20,21,22,23,24: connection electrode (electrode),20B,21B,22B,23B,24B: electrode back surface (electrode surface),40: wiring members,41,42,43: anode wiring member,44,45,46: cathode wiring member,50: manufacturing equipment,51: formation substrate (wafer),52: formation surface,53: thin film layer,60: LED display device (semiconductor composite device),61: LED display type display unit,66: display driver (drive circuit),70: circuit board,70A: substrate front surface (front surface),71: base member part,72,73: insulation layer,73A: insulation front surface,74: column wiring member (first direction wire),75: row common wiring member (second direction wire),76: internal wiring member,77: sticking region,80: connection pad,80A,81A,82A,83A,84A,591A,592A,593A: pad front surface,81,82,83: column wiring connection pad,84: row common wiring connection pad,90: circuit board manufacturing equipment,402C1,402C2,402C3: notch part (penetration part),591,592,593: sub-connection pad.