JP2006023763A - Electronic module, its driving method, and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic module which can be driven by being inputted with a few kinds of power sources and its driving method and an electronic apparatus. <P>SOLUTION: The electronic module has an electronic substrate 210, and an interconnect substrate 240 which is mounted on the electronic substrate 210 and on which an integrated circuit chip 242 is mounted. The interconnect substrate 240 has an input terminal 244, and one or a plurality of amplifier circuits 250, 252 and 254 which generate a plurality of different amplified power sources V<SB>1</SB>to V<SB>5</SB>by amplifying an external power source V<SB>0</SB>inputted to the input terminal 244. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electronic module, a manufacturing method and a driving method thereof, and an electronic device.

  Recently, development of electroluminescence (hereinafter referred to as EL) modules has been progressing. An electronic module such as an EL module has an electronic substrate (for example, an EL panel) and a wiring substrate (for example, a flexible substrate). The EL panel is driven by a semiconductor chip (for example, a driver IC) mounted on a wiring board in the same manner as a liquid crystal device (for example, a liquid crystal panel). However, since the driving principle is different between the EL panel and the liquid crystal panel, the wiring pattern formed on the wiring board for driving the EL panel needs to be arranged corresponding to the structure of the EL. In addition, the electronic board and the wiring board are electrically connected with a large number of terminals. Therefore, conventionally, when the arrangement order of the terminals of the electronic board is changed, the arrangement order of the terminals of the wiring board has to be changed. Further, conventionally, when a plurality of types of power supplies are required for driving the electronic substrate, these are input from the outside of the electronic module. Therefore, there is a problem that it is difficult to cope with the change of the electronic substrate.

An object of the present invention is to provide an electronic module having wiring arranged corresponding to an EL structure, a method for manufacturing the same, and an electronic device, or an electronic that can cope with a change in the arrangement order of terminals of an electronic substrate. An object of the present invention is to provide a module, a manufacturing method thereof, and an electronic device, or to provide an electronic module, a driving method thereof, and an electronic device which can be driven by inputting a small number of power sources.
International Publication No. WO 98/40871 Pamphlet

(1) The electronic module includes an EL unit,
A first substrate on which the EL portion is formed;
A second substrate attached to the first substrate;
An integrated circuit chip mounted on the second substrate;
A plurality of power supply wirings for supplying current to the EL unit;
Have
The plurality of power supply wirings include a plurality of first power supply wirings formed so as to pass through a pair of regions sandwiching the EL portion on the first substrate, and the integrated circuit chip on the second substrate. A plurality of second power supply wirings formed so as to pass through a pair of sandwiched regions, and the first and second power supply wirings are electrically connected. According to this, a plurality of power supply wirings are formed so as to pass through a pair of regions sandwiching the EL portion and the integrated circuit chip. Therefore, a current can be made to flow uniformly to both sides of the EL portion.
(2) In this electronic module,
A plurality of signal wirings for inputting drive signals from the integrated circuit chip to the EL unit;
The plurality of signal wirings may be formed in a region sandwiched between the plurality of power supply wirings.
(3) In this electronic module,
Each of the signal wirings may be narrower than each of the power supply wirings.
(4) In this electronic module,
A pair of scanning drivers disposed in a region sandwiching the EL portion on the first substrate;
A plurality of control wirings for inputting control signals from the integrated circuit chip to the scan drivers;
Further comprising
The plurality of control wirings may be formed in a pair of regions sandwiching the plurality of signal wirings and between the plurality of power supply wirings.
(5) In this electronic module,
A plurality of connector terminals formed on an end portion of the second substrate excluding an attachment portion with the first substrate;
Each of the connector terminals may be formed wider than the power supply wiring.
(6) The electronic device has the electronic module.
(7) The method for manufacturing an electronic module includes fixing a first substrate on which an EL portion is formed and a second substrate on which an integrated circuit chip is mounted,
The first substrate has a plurality of first power supply wirings formed so as to pass through a pair of regions sandwiching the EL portion,
The second substrate has a plurality of second power supply wirings formed so as to pass through a pair of regions sandwiching the integrated circuit chip,
In the step of fixing the first and second substrates, the first and second power supply wirings are electrically connected. According to this, a plurality of power supply lines are formed so as to pass through a pair of regions sandwiching the EL portion and the integrated circuit chip. Therefore, a current can be made to flow uniformly to both sides of the EL portion.
(8) An electronic module includes an electronic substrate having a plurality of first terminals;
A plurality of second terminals electrically connected to the first terminal of the electronic substrate, two or more first wirings extending from two or more of the second terminals, and the first wiring A wiring board on which a wiring pattern including two or more second wirings formed in an electrically insulated state is formed;
An electrical connection for electrically connecting at least one of the first wirings and at least one of the second wirings;
Have According to this, the transmission line of a wiring pattern can be changed according to which 1st and 2nd wiring which an electrical connection part electrically connects. Therefore, even if the arrangement order of the first terminals of the electronic substrate is changed, it can be dealt with by changing only the transmission line by the electrical connection portion.
(9) This electronic module
An integrated circuit chip mounted on the wiring board;
The second wiring may be electrically connected to the integrated circuit chip.
(10) In this electronic module,
The electrical connection portion may be provided at a position closer to the electronic substrate than the integrated circuit chip.
(11) In this electronic module,
The electrical connection portion may be provided in each of a pair of regions closer to both ends than the center in the width direction of the wiring board.
(12) The electronic device includes the electronic modules (8) to (11).
(13) A method for manufacturing an electronic module includes electrically connecting a plurality of first terminals of an electronic board and a plurality of second terminals of a wiring board; and
At least one of two or more first wirings extending from two or more of the second terminals and two or more second wirings formed in an electrically insulated state from the first wiring. Electrically connecting at least one of the wires with an electrical connection;
including. According to this, the transmission line of a wiring pattern can be changed according to which 1st and 2nd wiring which an electrical connection part electrically connects. Therefore, even if the arrangement order of the first terminals of the electronic substrate is changed, it can be dealt with by changing only the transmission line by the electrical connection portion.
(14) An electronic module according to the present invention includes an electronic substrate,
A wiring board mounted on the electronic board and mounted with an integrated circuit chip;
Have
The wiring board includes an input terminal and one or a plurality of amplifier circuits that amplify an external power source input to the input terminal to generate a plurality of different amplified power sources. According to the present invention, a plurality of different amplified power supplies are generated by amplifying the external power supply, so that the electronic module can be driven by inputting a small number of external power supplies (for example, a single power supply).
(15) In this electronic module,
The integrated circuit chip is driven by the external power source,
The electronic substrate may be driven by the plurality of amplified power supplies.
(16) In this electronic module,
The amplifier circuit may be formed in a region between the integrated circuit chip and the input terminal.
(17) In this electronic module,
The integrated circuit chip is mounted at the center in the width direction of the wiring board,
A pair of amplifier circuits among the one or more amplifier circuits may be formed on both ends in the width direction of the wiring board.
(18) In this electronic module,
The wiring board has a signal wiring extending from the integrated circuit chip toward the electronic substrate, and a power wiring extending from the pair of amplifier circuits toward the electronic substrate,
The power supply wiring may be formed to be wider than the signal wiring.
(19) In this electronic module,
One of the one or a plurality of amplifier circuits includes a first circuit formed on the integrated circuit chip and a second circuit provided separately from the integrated circuit chip. May be.
(20) In this electronic module,
The second circuit may include a capacitor.
(21) In this electronic module,
The second circuit may include an inductor.
(22) An electronic device according to the present invention includes the electronic modules according to the above (14) to (21).
(23) An electronic module driving method according to the present invention includes inputting an external power source to an input terminal formed on a wiring board on which an integrated circuit chip is mounted,
Amplifying the external power source by one or a plurality of amplifier circuits formed on the wiring board to generate a plurality of different amplified power sources; and
Driving an electronic board electrically connected to the wiring board by the plurality of different amplification power supplies;
including. According to the present invention, a plurality of different amplified power supplies are generated by amplifying the external power supply, so that the electronic module can be driven by inputting a small number of external power supplies (for example, a single power supply).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram illustrating an electronic module. The electronic module has a first substrate 10. FIG. 2 is a plan view of the first substrate, and FIG. 3 is a cross-sectional view of the first substrate.

  The first substrate 10 may be a glass substrate, a plastic substrate, or a silicon substrate. As shown in FIG. 3, when light is extracted from the first substrate 10, a light transmissive substrate is used as the first substrate 10. The first substrate 10 has an EL (for example, organic EL) unit 12. The EL unit 12 emits light by an EL phenomenon. The EL unit 12 may be a carrier injection type. The EL unit 12 is driven by current. Specifically, a current flows through the light emitting material (for example, an organic material) 14 (see FIG. 3). The first substrate 10 having the EL unit 12 may be an EL panel.

  As shown in FIG. 2, a plurality of first power supply wirings 16, 18, 20, and 22 are formed on the first substrate 10. The plurality of first power supply wirings 16, 18, 20, and 22 are formed so as to pass through a pair of regions sandwiching the EL unit 12. The first power supply wirings 16, 18, and 20 are anode wirings for causing a current to flow through the EL unit 12. The first power supply wirings 16, 18, and 20 are formed with different widths, and flow different values of currents corresponding to differences in light emission efficiency depending on colors (R, G, and B) of the light emitting material 14. Suitable for The first power supply wiring 22 is a cathode wiring. The first power supply wiring 22 is disposed outside the other first power supply wirings 16, 18, and 20. Further, the first power supply wiring 22 is formed in a U-shape (or C-shape) so as to exclude the attachment side with the second substrate 50.

  The first power supply wiring (anode wiring) 16, 18, and 20 is connected to a plurality of anodes 24 (see FIG. 3). The first power supply wiring (cathode wiring) 22 is connected to the cathode 26 (see FIG. 3). The cathode 26 is formed to face the plurality of anodes 24. A luminescent material 14 is provided between each anode 24 and cathode 26. Note that a hole transport layer may be formed between the anode 24 and the light emitting material 14, and an electron transport layer may be formed between the cathode 26 and the light emitting material 14. Each of the plurality of first power supply wirings 16, 18, 20, and 22 is divided into a plurality of wirings, and each divided wiring has a terminal 28.

  A plurality of first signal wirings 30 for inputting drive signals to the EL unit 12 are formed on the first substrate 10. The first signal wiring 30 is formed in a region sandwiched between the first power supply wirings 16, 18, 20, and 22. Each first signal wiring 30 is formed to be narrower than the first power supply wirings 16, 18, 20, 22. Further, the terminal 32 of the first signal wiring 30 is formed to be narrower than the terminal 28 of the first power supply wiring.

  On the first substrate 10, a pair of scanning drivers 34 are arranged in a region sandwiching the EL unit 12. The scan driver 34 may be a chip component or a thin film circuit (for example, a circuit including a TFT) formed on the first substrate 10. Each scanning driver 34 is disposed between the EL unit 12 and the first power supply wirings 16, 18, 20, and 22. A plurality of first control wirings 36 for inputting control signals are connected to the pair of scanning drivers 34. The plurality of first control wirings 36 are formed in a pair of regions between which the first signal wiring 30 is sandwiched and between the first power supply wirings 16, 18, 20, 22. The terminal 38 of the first control wiring 36 may be formed with the same width as the terminal 28 of the first power supply wiring, or may be formed with a width larger than the terminal 32 of the first signal wiring 30. .

  The terminals 28, 32, and 38 described above are arranged so as to extend toward one side of the first substrate 10. The first substrate 10 has a first positioning mark 40. By aligning the first positioning mark 40 and a second positioning mark 70 (see FIG. 4) to be described later, the first and second substrates 10 and 50 can be aligned. The first substrate 10 is provided with a sealing portion 42 as necessary. The sealing part 42 is provided so as to cover the cathode 26 and prevents ingress of moisture and oxygen. The sealing portion 42 can be formed of a glass substrate or a plastic substrate when light transmission is required, and can be formed of metal, silicon, or the like when light transmission is unnecessary. .

  As shown in FIG. 1, the electronic module has a second substrate 50. The second substrate 50 may be a flexible substrate. The second substrate 50 is attached to the first substrate 10. FIG. 4 is a diagram for explaining the second substrate and the manufacturing method thereof. An integrated circuit chip 52 is mounted on the second substrate 50. The integrated circuit chip 52 may be formed with a signal driver having a function of generating a signal to the EL unit 12. The integrated circuit chip 52 may be face-down bonded or may be electrically connected by TAB (Tape Automated Bonding).

  A plurality of second power supply wirings 54 are formed on the second substrate 50. The plurality of second power supply wirings 54 are formed so as to pass through a pair of regions sandwiching the integrated circuit chip 52. When the second power supply wiring 54 is formed so as to pass through only one side of the pair of regions sandwiching the integrated circuit chip 52, the second power supply wiring 54 of one group is more than the second power supply wiring 54 of the other group. Also gets longer. On the other hand, since the difference in length between the plurality of second power supply wires 54 is small, it is possible to flow the current uniformly. The second power supply line 54 is electrically connected to the first power supply lines 16, 18, 20, and 22. Specifically, the terminal 56 of the second power supply wiring 54 and the terminal 28 of the first power supply wiring are electrically connected. An anisotropic conductive material (an anisotropic conductive film, anisotropic conductive paste, etc.) may be used for the electrical connection. A power supply wiring is configured by the first and second power supply wirings that are electrically connected. This power supply wiring is for flowing a current through the EL section 12.

  A plurality of second signal wirings 58 for inputting drive signals from the integrated circuit chip 52 to the EL unit 12 are formed on the second substrate 50. The second signal wiring 58 is formed in a region sandwiched between the second power wirings 54. The second signal wiring 58 is formed to be narrower than the second power supply wiring 54. Further, the terminal 60 of the second signal wiring 58 is formed to be narrower than the terminal 56 of the second power supply wiring 54. The second signal wiring 58 is electrically connected to the first signal wiring 30. Specifically, the terminal 60 of the second signal wiring 58 and the terminal 32 of the first signal wiring 30 are electrically connected. The electrical connection may be the same as the electrical connection of the terminals 28 and 56. A signal wiring is configured by the first and second signal wirings that are electrically connected. This signal wiring is for inputting a drive signal from the integrated circuit chip 52 to the EL section 12.

  A plurality of second control wirings 62 are formed on the second substrate 50. The second control wiring 62 is connected to the integrated circuit chip 52, and a control signal (for example, a clock signal) is output from the integrated circuit chip 52. The plurality of second control wirings 62 are formed in a pair of regions sandwiching the second signal wiring 58 and in a region sandwiched by the second power supply wiring 54. A synchronized clock signal may be output to each of the pair of regions sandwiching the second signal wiring 58. The terminal 64 of the second control wiring 62 may be formed with the same width as the terminal 56 of the second power supply wiring 54, or may be formed with a width larger than the terminal 60 of the second signal wiring 58. Good. The second control wiring 62 is electrically connected to the first control wiring 36. Specifically, the terminal 64 of the second control wiring 62 and the terminal 38 of the first control wiring 36 are electrically connected. The electrical connection may be the same as the electrical connection of the terminals 28 and 56. A control wiring is configured by the first and second control wirings that are electrically connected. This control wiring is for inputting a control signal (including a clock signal) from the integrated circuit chip 52 to the scan driver 34.

  A plurality of input wirings 66 are formed on the second substrate 50. The plurality of input wirings 66 are connected to the integrated circuit chip 52 and extend from the integrated circuit chip 52 in the direction opposite to the second signal wiring 58. The input wiring 66 is for inputting a data signal (for example, a digital signal), a chip select signal, a power source, or the like to the integrated circuit chip 52.

  Connector terminals 68 are formed on the second substrate 50. The connector terminal 68 is formed at an end portion excluding the attachment portion with the first substrate 10. The connector terminal 68 is formed wider than each power supply wiring (the first power supply wiring 16, 18, 20, 22 or the second power supply wiring 54). The connector terminal 68 is an end of the second power supply wiring 54 and the input wiring 66. The connector terminal 68 is formed to extend toward one side of the second substrate 50.

  The second substrate 50 has a second positioning mark 70. By aligning the second positioning mark 70 and the first positioning mark 40, the first and second substrates 10 and 50 can be aligned.

  The second substrate 50 may be formed by punching a tape 72 shown by a two-dot chain line in FIG. If the hole 74 is formed in the second substrate 50 in advance, and the tape 72 is punched out with the hole 74 as a reference, accurate punching is possible. Further, the second substrate 50 can be fixed using the hole 74. The second substrate 50 thus fixed may be attached to the first substrate 10.

  One or a plurality of dummy patterns 76, 78, 80, 82 are formed on the second substrate 50. Since the dummy patterns 76, 78, 80, and 82 are formed, the portion of the second substrate 50 where the conductive foil is not formed is reduced, and warpage and distortion of the second substrate 50 can be suppressed. The dummy patterns 76 and 82 have marks 84 and 86, respectively. The marks 84 and 86 may be through holes formed in the dummy patterns 76 and 82, may be through holes formed in the dummy patterns 76 and 82 and the second substrate 50, or may be dummy patterns. It may be a through hole formed in a resin layer (for example, a resist layer) on 76 and 82. The integrated circuit chip 52 can be aligned by the marks 84 and 86. The marks 84 and 86 can be used to align the closest corner of the plurality of corners of the integrated circuit chip 52. The dummy patterns 78 and 80 have a stripe shape or the like, and are formed with a plurality of holes. Accordingly, the dummy patterns 78 and 80 have high adhesion with a resin layer (for example, a resist layer) formed thereon, and the resin layer is difficult to peel off.

  The method for manufacturing the electronic module includes fixing the first substrate 10 on which the EL portion 12 is formed and the second substrate 50 on which the integrated circuit chip 52 is mounted. The first substrate 10 has a plurality of first power supply wirings 16, 18, 20, and 22 formed so as to pass through a pair of regions sandwiching the EL unit 12. The second substrate 50 has a plurality of second power supply wires 54 formed so as to pass through a pair of regions sandwiching the integrated circuit chip 52. In the step of fixing the first and second substrates 10 and 50, the first power supply wirings 16, 18, 20, and 22 and the second power supply wiring 54 are electrically connected.

  FIG. 5 is a diagram illustrating a circuit of the electronic module. In the EL unit 12, a plurality of scanning lines 90, a plurality of signal lines 92 extending in a direction intersecting the scanning lines 90, and a plurality of power supply lines 94 extending along the signal lines 92 are formed. The scanning line 90 is electrically connected to the scanning driver 34 (for example, including a shift register and a level shifter). The signal line 92 is electrically connected to the signal driver 96 of the integrated circuit chip 52. The power line 94 is electrically connected to one of the first power lines 16, 18, and 20. Corresponding to each intersection of the scanning line 90 and the signal line 92, the luminescent material 14 which becomes a pixel is provided.

  A switching element 98 is electrically connected to the scanning line 90 corresponding to each pixel. If the switching element 98 is a thin film transistor (MOSFET), the scanning line 90 is electrically connected to its gate electrode. The signal line 92 is electrically connected to the capacitor 100 corresponding to each pixel. Specifically, the capacitor 100 is electrically connected between the signal line 92 and the power supply line 94, and can hold charges corresponding to the image signal from the signal line 92. A switching element 98 is electrically connected between the capacitor 100 and the signal line 92. The switching element 98 is controlled by the scanning signal from the scanning line 90, and the switching element 98 controls charge accumulation in the capacitor 100.

  The drive element 102 is controlled by the amount of charge held in the capacitor 100 or the presence or absence thereof. If the driving element 102 is a thin film transistor (MOSFET), its gate electrode and the electrode on the signal line 92 side of the capacitor 100 are electrically connected. The drive element 102 is electrically connected between the power supply line 94 and the light emitting material 14. That is, the drive element 102 controls the supply of current from the power supply line 94 to the light emitting material 14.

  Under such a configuration, when the switching element 98 is turned on by the scanning signal of the scanning line 90, the electric charge is held in the capacitor 100 due to the potential difference between the signal line 92 and the power supply line 94 at that time. Thus, the control state of the drive element 102 is determined. Then, a current flows from the power supply line 94 to the anode 24 through the channel of the driving element 102, and a current flows to the cathode 26 through the light emitting material 14. The luminescent material 14 emits light according to the amount of current flowing through it.

  FIG. 6 is a diagram illustrating an electronic module (for example, an EL module or a liquid crystal module). The electronic module has an electronic substrate 110. FIG. 7 is a plan view of the electronic substrate, and FIG. 8 is a cross-sectional view of the electronic substrate. The electronic substrate 110 may be a display panel (EL panel, liquid crystal panel, etc.), for example. The electronic substrate 110 has a substrate 111. The substrate 111 may be a glass substrate, a plastic substrate, or a silicon substrate. As shown in FIG. 8, when light is extracted from the substrate 111, a light transmissive substrate is used as the substrate 111.

  The electronic substrate 110 has an operation unit 112. The operation unit 112 is a part where an operation for image display is performed, for example. The operation unit 112 is an EL (for example, organic EL) unit. The EL part emits light by the EL phenomenon. The EL part may be a carrier injection type. The EL unit may be driven by current. Specifically, a current flows through a light emitting material (for example, an organic material) (see FIG. 8).

  In the electronic substrate 110, a pair of scanning drivers 114 are arranged in a region sandwiching the operation unit 112. The scan driver 114 may be a chip component or a thin film circuit (for example, a circuit including a TFT) formed on the substrate 111.

  The electronic substrate 110 has a plurality of first terminals 120, 122, and 124. Among these, the two or more first terminals 120 are electrically connected to the scan driver 114 by the control wiring 126. The two or more first terminals 122 are electrically connected to the power supply wirings 130, 132, 134, and 136. The power supply wirings 130, 132, and 134 are anode wirings for causing current to flow through the operating unit 112. The power supply wirings 130, 132, and 134 are formed with different widths, and currents having different values correspond to the difference in light emission efficiency depending on the colors (R, G, and B) of the light emitting material 144 (see FIG. 8). Suitable for flowing. The power supply wiring 136 is a cathode wiring. The power supply wirings 130, 132, 134, 136 are formed so as to pass through a pair of regions sandwiching the operation unit 112. The power supply wiring 136 serving as the cathode wiring is disposed outside the power supply wirings 130, 132, and 134 serving as the anode wiring. Further, the power supply wiring 136 is formed in a U-shape (or C-shape) so as to exclude the side attached to the wiring board 150. Further, the two or more first terminals 124 are electrically connected to the operation unit 112 by the signal wiring 138.

  The control wiring 126 is a pair of regions sandwiching the signal wiring 138 and is formed in a region sandwiched between the power supply wirings 130, 132, 134, and 136. The signal wiring 138 is formed in a region sandwiched between the control wirings 126. The signal wiring 138 is formed in a region sandwiched between the power supply wirings 130, 132, 134, and 136. The signal wiring 138 is formed to be narrower than the control wiring 126. The signal wiring 138 is formed to be narrower than the power wirings 130, 132, 134, 136.

  The first terminal 124 connected to the signal wiring 138 is formed to be narrower than the first terminals 120 and 122 connected to the power supply wirings 130, 132, 134, 136 and the control wiring 126. . The first terminal 120 connected to the control wiring 126 may be formed with the same width as the first terminal 122 connected to the power supply wiring 130, 132, 134, 136, and is connected to the signal wiring 138. It may be formed with a width larger than that of the first terminal 124.

  The power supply wiring (anode wiring) 130, 132, 134 is connected to a plurality of anodes 140 (see FIG. 8). The power supply wiring (cathode wiring) 136 is connected to the cathode 142 (see FIG. 8). The cathode 142 is formed to face the plurality of anodes 140. A luminescent material 144 is provided between each anode 140 and cathode 142. Note that a hole transport layer may be formed between the anode 140 and the light emitting material 144 and an electron transport layer may be formed between the cathode 142 and the light emitting material 144.

  The above-described first terminals 120, 122, and 124 are arranged to extend toward one side of the electronic substrate 110. The electronic substrate 110 has a first positioning mark 146. By aligning the first positioning mark 146 and a second positioning mark 182 (see FIG. 10) described later, the electronic substrate 110 and the wiring substrate 150 can be aligned. The electronic substrate 110 is provided with a sealing portion 148 as necessary. The sealing portion 148 is provided so as to cover the cathode 142 and prevents entry of moisture and oxygen. The sealing portion 148 can be formed of a glass substrate or a plastic substrate when light transmission is required, and can be formed of metal, silicon, or the like when light transmission is unnecessary. .

  The electronic module has a wiring board 150. The wiring substrate 150 has a substrate 151. A wiring pattern is formed on the substrate 151. The substrate 151 may be a flexible substrate. The wiring substrate 150 (substrate 151) is attached to the electronic substrate 110.

  An integrated circuit chip 152 is mounted on the wiring board 150. In the integrated circuit chip 152, a signal driver 96 (see FIG. 12) including a function of generating a signal to the operation unit 112 may be formed. The integrated circuit chip 152 may be face-down bonded or may be electrically connected by TAB (Tape Automated Bonding).

  The wiring board 150 has a plurality of second terminals 160, 162, 164. The wiring board 150 has two or more first wirings 166 extending from two or more second terminals 160. The wiring board 150 has two or more second wirings 168 formed in a state of being electrically insulated from the first wiring 166. The second wiring 168 is electrically connected to the integrated circuit chip 152. A control signal (eg, a clock signal) is output from the integrated circuit chip 152 to the second wiring 168.

  An electrical connection 170 is provided on the wiring board 150. The electrical connection unit 170 may be a chip component (for example, a surface mount component). The electrical connection unit 170 may be provided at a position closer to the electronic substrate 110 than the integrated circuit chip 152. The electrical connection portion 170 may be provided in each of the pair of regions closer to both ends than the center in the width direction of the wiring board 150.

  FIG. 9 is a diagram for explaining the electrical connection portion and the structure in the vicinity thereof. One second wiring 168 may be formed on the extended line at a distance from the tip of one first wiring 166 (tip opposite to the second terminal 160). The same number of second wirings 168 as the first wirings 166 may be formed.

  The electrical connection unit 170 electrically connects at least one first wiring 166 and at least one second wiring 168. The electrical connection portion 170 may have one or a plurality of conductive portions 172. The plurality of conductive portions 172 may be electrically insulated from each other. One conductive portion 172 may electrically connect one first wiring 166 and one second wiring 168. Another conductive part 172 may be arranged so as to straddle one conductive part 172. Accordingly, one first wiring 166 and the second wiring 168 that is not on the extension line can be electrically connected. Note that the conductive portion 172 may have a resistance. The conductive portion 172 may be solder. A control wiring is configured by the first and second wirings 166 and 168 that are electrically connected.

  The wiring board 150 has two or more power supply wirings 174 extending from two or more second terminals 162. The power supply wiring 174 is formed so as to pass through a pair of regions sandwiching the integrated circuit chip 152. When the power supply wiring 174 is formed so as to pass through only one side of the pair of regions sandwiching the integrated circuit chip 152, the power supply wiring 174 of one group becomes longer than the power supply wiring 174 of the other group. On the other hand, since the difference between the lengths of the plurality of power supply wirings 174 is small, it is possible to flow the current uniformly.

  The wiring board 150 has two or more signal wirings 176 extending from two or more second terminals 164. The signal wiring 176 is formed in a region sandwiched between the power supply wirings 174. The wiring board 150 has a plurality of input wirings 178. The plurality of input wirings 178 are connected to the integrated circuit chip 152 and extend from the integrated circuit chip 152 in the direction opposite to the signal wiring 176. The input wiring 178 is for inputting a data signal (for example, a digital signal), a chip select signal, a power source, or the like to the integrated circuit chip 152.

  The wiring board 150 has a plurality of connector terminals 180. The connector terminal 180 is formed at an end portion excluding the attachment portion with the electronic substrate 110. The connector terminal 180 is formed wider than the power supply wiring 174. The connector terminal 180 is connected to the power supply wiring 174 and the input wiring 178. Connector terminal 180 is formed to extend toward one side of wiring board 150.

  The second terminal 160 connected to the first wiring 166 may be formed with the same width as the second terminal 162 connected to the power supply wiring 174, and the second terminal connected to the signal wiring 176. It may be formed with a width larger than 164. The first and second wirings 166 and 168 are a pair of regions sandwiching the signal wiring 176 and are formed in a region sandwiched between the power supply wirings 174. A synchronized clock signal may be output from the integrated circuit chip 152 to the second wiring 168 in each of the pair of regions sandwiching the signal wiring 176. The signal wiring 176 is formed to be narrower than the power supply wiring 174. Further, the second terminal 164 to which the signal wiring 176 is connected is formed so as to be narrower than the second terminal 162 to which the power supply wiring 174 is connected.

  The second terminals 160, 162, and 164 are electrically connected to the first terminals 120, 122, and 124 of the electronic substrate 110, respectively. An anisotropic conductive material (an anisotropic conductive film, anisotropic conductive paste, etc.) may be used for the electrical connection. Specifically, the second terminal 160 connected to the first wiring 166 and the first terminal 120 connected to the control wiring 126 are electrically connected. That is, the first wiring 166 is electrically connected to the control wiring 126. In addition, the second terminal 162 connected to the power supply wiring 174 and the first terminal 122 of the power supply wiring 130, 132, 134, 136 are electrically connected. That is, the power supply wiring 174 is electrically connected to the power supply wirings 130, 132, 134, and 136. In addition, the second terminal 164 to which the signal wiring 176 is connected and the first terminal 124 to which the signal wiring 138 is connected are electrically connected. That is, the signal wiring 176 is electrically connected to the signal wiring 138.

  The wiring board 150 has a second positioning mark 182 (see FIG. 10). By aligning the second positioning mark 182 and the first positioning mark 146, the electronic substrate 110 and the wiring substrate 150 can be aligned.

  FIG. 10 is a diagram for explaining a method of manufacturing a wiring board. The wiring board 150 shown in FIG. 10 is shown in a state before the integrated circuit chip 152 and the electrical connection portion 170 are provided. The wiring board 150 may be formed by punching a tape 184 indicated by a two-dot chain line in FIG. Precise punching is possible by forming holes 186 in the wiring board 150 in advance and punching the tape 184 with the holes 186 as a reference. Further, the wiring board 150 can be fixed using the holes 186. The wiring board 150 thus fixed may be attached to the electronic board 110.

  One or a plurality of dummy patterns 188, 190, 192, 194 are formed on the wiring board 150. Since the dummy patterns 188, 190, 192, and 194 are formed, the portion of the wiring board 150 where the conductive foil is not formed is reduced, and warpage and distortion of the wiring board 150 can be suppressed. The dummy patterns 188 and 194 have marks 196 and 198, respectively. The marks 196 and 198 may be through holes formed in the dummy patterns 188 and 194, may be through holes formed in the dummy patterns 188 and 194 and the wiring substrate 150, It may be a through hole formed in a resin layer (for example, a resist layer) on 194. With the marks 196 and 198, the integrated circuit chip 152 can be aligned. The marks 196 and 198 can be used to align the closest corner of the plurality of corners of the integrated circuit chip 152. The dummy patterns 190 and 192 have a stripe shape or the like, and are formed with a plurality of holes. Therefore, the dummy patterns 190 and 192 have high adhesion with a resin layer (for example, a resist layer) formed thereon, and the resin layer is difficult to peel off.

  In the electronic module manufacturing method, the plurality of first terminals 120, 122, 124 of the electronic substrate 110 and the plurality of second terminals 160, 162, 164 of the wiring substrate 150 are electrically connected. At least one of the two or more first wirings 166 extending from the two or more second terminals 160 and the two or more second wirings 166 are formed in an electrically insulated state. At least one of the wirings 168 is electrically connected by an electrical connection portion 170.

  The transmission line of the wiring pattern can be changed depending on which first and second wirings 166 and 168 are electrically connected by the electrical connection unit 170. Therefore, even if the arrangement order of the first terminals 120 of the electronic substrate 110 is changed, it is possible to cope with the change by simply changing the transmission line by the electrical connection portion 170.

  For example, instead of forming the transmission line shown in FIG. 11A by the electrical connection 170, another transmission line is formed by another electrical connection 200 as shown in FIG. 11B. Also good. Specifically, in FIG. 11B, the first wiring 166 and the second wiring 168 on an extension line of the first wiring 166 are electrically connected by the electrical connection portion 200.

  FIG. 12 is a diagram illustrating a circuit of the electronic module. The operation unit 112 includes a plurality of scanning lines 90, a plurality of signal lines 92 extending in a direction intersecting the scanning lines 90, and a plurality of power supply lines 94 extending along the signal lines 92. The power supply line 94 is electrically connected to any one of the power supply wirings 130, 132, and 134. A light emitting material 144 serving as a pixel is provided corresponding to each intersection of the scanning line 90 and the signal line 92. A current flows from the power supply line 94 to the anode 140 through the channel of the driving element 102, and a current flows to the cathode 142 through the light emitting material 144. The light emitting material 144 emits light according to the amount of current flowing through it. The other contents correspond to the contents of the circuit of FIG.

(Embodiment of the present invention)
FIG. 13 is a diagram showing an electronic module (for example, an EL module or a liquid crystal module) according to the embodiment of the present invention. The electronic module has an electronic substrate 210. FIG. 14 is a plan view of the electronic substrate, and FIG. 15 is a cross-sectional view of the electronic substrate. The electronic substrate 210 may be, for example, a display panel (EL panel, liquid crystal panel, etc.). The electronic substrate 210 has a substrate 211. The substrate 211 may be a glass substrate, a plastic substrate, or a silicon substrate. As illustrated in FIG. 15, when light is extracted from the substrate 211, a light transmissive substrate is used as the substrate 211.

  The electronic substrate 210 has an operation unit 212. The operation unit 212 is a part where an operation for image display is performed, for example. In the present embodiment, the operation unit 212 is an EL (eg, organic EL) unit. The EL part emits light by the EL phenomenon. The EL part may be a carrier injection type. The EL unit may be driven by current. Specifically, a current flows through the light emitting material (for example, an organic material) 236 (see FIG. 15).

  In the electronic substrate 210, a pair of scanning drivers 214 are arranged in a region sandwiching the operation unit 212. The scan driver 214 may be a chip component or a thin film circuit (for example, a circuit including a TFT) formed on the substrate 211.

  The electronic substrate 210 has a plurality of anode wirings 220, 222, and 224. The anode wirings 220, 222, and 224 are wirings for flowing current to the operation unit 212. The anode wirings 220, 222, and 224 are formed with different widths, and currents having different values corresponding to differences in light emission efficiency depending on colors (R, G, and B) of the light emitting material 236 (see FIG. 15). Suitable for flowing. The electronic substrate 210 has a cathode wiring 226. The anode wirings 220, 222, 224 and the cathode wiring 226 are formed so as to pass through a pair of regions sandwiching the operation unit 212. The cathode wiring 226 is disposed outside the anode wirings 220, 222, and 224. Further, the cathode wiring 226 is formed in a U-shape (or C-shape) so as to exclude the attachment side with the wiring board 240.

  The electronic board 210 has signal wiring 228. The signal wiring 228 supplies a drive signal to the operation unit 212. The electronic board 210 has a control wiring 230. The control wiring 230 is formed in a pair of regions sandwiching the signal wiring 228 and in a region sandwiched between the anode wirings 220, 222, 224 and the cathode wiring 226. The signal wiring 228 is formed in a region sandwiched between the control wirings 230. The signal wiring 228 is formed in a region sandwiched between the anode wirings 220, 222, 224 and the cathode wiring 226. The signal wiring 228 is formed to be narrower than the control wiring 230. The signal wiring 228 is formed to be narrower than the anode wiring 220, 222, 224 and the cathode wiring 226.

  The anode wirings 220, 222, 224, the cathode wiring 226, the signal wiring 228, and the control wiring 230 are arranged so as to extend toward one side of the electronic substrate 210, and each tip portion is a terminal.

  The anode wirings 220, 222, and 224 are connected to a plurality of anodes 232 (see FIG. 15). The cathode wiring 226 is connected to the cathode 234 (see FIG. 15). The cathode 234 is formed to face the plurality of anodes 232. A luminescent material 236 is provided between each anode 232 and cathode 234. Note that a hole transport layer may be formed between the anode 232 and the light emitting material 236 and an electron transport layer may be formed between the cathode 234 and the light emitting material 236.

  The electronic substrate 210 is provided with a sealing portion 238 as necessary. The sealing portion 238 is provided so as to cover the cathode 234 and prevents entry of moisture and oxygen. The sealing portion 238 can be formed of a glass substrate or a plastic substrate when light transmission is required, and can be formed of metal, silicon, or the like when light transmission is unnecessary. .

  The electronic module has a wiring board 240. The wiring substrate 240 has a substrate 241. The substrate 241 may be a flexible substrate. The wiring substrate 240 (substrate 241) is attached to the electronic substrate 210. An anisotropic conductive material (an anisotropic conductive film, an anisotropic conductive paste, etc.) may be used for electrical connection between the electronic substrate 210 and the wiring substrate 240.

  An integrated circuit chip 242 is mounted on the wiring board 240. In the integrated circuit chip 242, a signal driver 96 (see FIG. 17) including a function of generating a signal to the operation unit 212 may be formed. The integrated circuit chip 242 may be face-down bonded or may be electrically connected by TAB (Tape Automated Bonding). The integrated circuit chip 242 is mounted at the center in the width direction of the wiring board 240.

  The wiring board 240 has an input terminal 244. The input terminal 244 is an end portion of a wiring pattern (not shown). The input terminal 244 is formed at an end portion excluding the attachment portion with the electronic substrate 210. The input terminal 244 is formed wider than the power supply wirings 260, 262, 264, 266, 268. The input terminal 244 may be formed to extend toward one side of the wiring board 240.

An external power supply V ₀ is input to the input terminal 244. External power supply V ₀ may be a single power supply (voltage). Integrated circuit chip 242 by the external power supply V ₀ may be driven. The wiring board 240 has one or a plurality of amplifier circuits 250, 252 and 254. One or more amplifier circuits 250, 252, 254 external power supply _{V 0} input amplified (eg boosting the voltage thereof) to the input terminal 244, a different (e.g., different in voltage) a plurality of amplification power supply _{V 1} to generate a ~V _5. Amplifier circuits 250, 252 and 254 are formed in a region between the integrated circuit chip 242 and the input terminal 244. A pair of amplifier circuits 250 and 252 are formed on both ends in the width direction of the wiring board 240. In the modification shown in FIG. 16, the pair of amplifier circuits 272 and 274 are arranged in a pair of regions sandwiching the integrated circuit chip 242.

According to the present embodiment, the external power source V ₀ is amplified to generate a plurality of different amplified power sources V _{1 to} V ₅ , so that an electronic module can be input by inputting a small number of external power sources (for example, a single power source) V _0. Can be driven.

The amplifier circuits 250 and 252 are formed separately from the integrated circuit chip 242. By doing so, it is possible to prevent the integrated circuit chip 242 from being affected by the amplification action by the amplifier circuits 250 and 252. For example, this configuration can be applied when the current values of the amplified power supplies V ₁ , V ₂ , and V ₃ are large and the amplifier circuits 250 and 252 cannot be built in the integrated circuit chip 242.

  The amplifier circuit 254 includes first and second circuits 256 and 258. The first circuit 256 is formed on the integrated circuit chip 242. The second circuit 258 is formed separately from the integrated circuit chip 242. The second circuit 258 includes, for example, a capacitor or an inductor, and may constitute at least a part of the booster circuit. When the second circuit 258 requires many components, it is effective to form the second circuit 258 separately from the integrated circuit chip 242.

  The wiring board 240 has power supply wirings 260, 262, 264, 266, 268. The power supply wirings 260, 262, 264, 266, 268 extend from the amplifier circuits 250, 252, 254 toward the electronic substrate 210.

The amplifier circuit 250 is electrically connected to the power supply wiring 260. The power supply wiring 260 is electrically connected to the anode wiring 224 of the electronic substrate 210. FIG. 13 shows the back surface of the electronic substrate 210 shown in FIG. The external power supply V ₀ input to the amplifier circuit 250 is amplified to the amplified power supply V ₁ . The amplified power supply V ₁ is input to the anode wiring 224 through the power supply wiring 260. The amplifier circuit 252 is electrically connected to the power supply wirings 262 and 264. The power supply wirings 262 and 264 are electrically connected to the anode wirings 220 and 222 of the electronic substrate 210, respectively. The external power supply V ₀ input to the amplifier circuit 252 is amplified to the amplified power supplies V ₂ and V ₃ . The amplified power supplies V ₂ and V ₃ are input to the anode wirings 220 and 222 through the power supply wirings 262 and 264. The electronic substrate 210 is driven by the amplified power supplies V ₁ , V ₂ , V ₃ .

  The power supply wirings 260, 262 and 264 are formed so as to pass through a pair of regions sandwiching the integrated circuit chip 242. If the power supply wirings 260, 262, and 264 are formed so as to pass through only one side of the pair of regions sandwiching the integrated circuit chip 242, for example, the power supply wiring 260 becomes longer than the other power supply wirings 262 and 264. On the other hand, in the present embodiment, the difference in length between the plurality of power supply wirings 260, 262, and 264 is small, so that the current can flow uniformly.

The amplifier circuit 254 is electrically connected to the power supply wirings 266 and 268. The power supply wirings 266 and 268 are electrically connected to the control wiring 230 of the electronic substrate 210, respectively. The control wiring 230 connected to the power supply wirings 266 and 268 is for supplying power to the scanning driver 214. The external power supply V ₀ input to the amplifier circuit 254 is amplified to amplified power supplies V ₄ and V ₅ . The amplified power supplies V ₄ and V ₅ are input to the control wiring 230 through the power supply wirings 266 and 268.

  The wiring board 240 has signal wirings 270 extending from the integrated circuit chip 242 toward the electronic board 210. The signal wiring 270 is formed in a region sandwiched between the power supply wirings 260, 262, 264, 266 and 268. The signal wiring 270 is electrically connected to the signal wiring 228 of the electronic substrate 210. The power supply wirings 260, 262, 264, 266, 268 may be formed to be wider than the signal wiring 270.

  The wiring board 240 includes control wiring (wiring for inputting a clock signal or the like from the integrated circuit chip 242 to the scanning driver 214), cathode wiring (wiring electrically connected to the cathode wiring 226), input wiring (not shown). Wiring etc. connected to the input terminal 244.

In the driving method of the electronic module according to the present embodiment, the external power supply V ₀ is input to the input terminal 244 formed on the wiring board 240 on which the integrated circuit chip 242 is mounted. The external power supply _{V 0,} and amplified by one or more of amplifier circuits 250, 252, and 254 formed on the wiring board 240, to generate a plurality of amplified power _V 1 ~V ₅ different. The electronic board 210 electrically connected to the wiring board 240 is driven by a plurality of different amplified power supplies V _{1 to} V ₅ .

  FIG. 17 is a diagram illustrating a circuit of the electronic module according to the present embodiment. The operation unit 212 includes a plurality of scanning lines 90, a plurality of signal lines 92 extending in a direction intersecting the scanning lines 90, and a plurality of power supply lines 94 extending along the signal lines 92. The power line 94 is electrically connected to any one of the anode wirings 220, 222, and 224. A light emitting material 236 serving as a pixel is provided corresponding to each intersection of the scanning line 90 and the signal line 92. A current flows from the power supply line 94 to the anode 232 through the channel of the driving element 102, and a current flows to the cathode 234 through the light emitting material 236. The luminescent material 236 emits light according to the amount of current flowing through it. The other contents correspond to the contents of the circuit of FIG.

  As an electronic apparatus having an electronic module (for example, an EL module or a liquid crystal module) according to an embodiment of the present invention, FIG. 18 shows a notebook personal computer 1000 and FIG. 19 shows a mobile phone 2000. .

  The present invention is not limited to the above-described embodiments, and various modifications can be made. For example, the present invention includes configurations that are substantially the same as the configurations described in the embodiments (for example, configurations that have the same functions, methods, and results, or configurations that have the same purposes and results). In addition, the invention includes a configuration in which a non-essential part of the configuration described in the embodiment is replaced. In addition, the present invention includes a configuration that exhibits the same operational effects as the configuration described in the embodiment or a configuration that can achieve the same object. Further, the invention includes a configuration in which a known technique is added to the configuration described in the embodiment.

FIG. 1 is a diagram illustrating an electronic module. FIG. 2 is a plan view showing a first substrate of the electronic module. FIG. 3 is a cross-sectional view showing a first substrate of the electronic module. FIG. 4 is a plan view showing a second substrate of the electronic module. FIG. 5 is a diagram illustrating a circuit of the electronic module. FIG. 6 is a diagram illustrating the electronic module. FIG. 7 is a plan view showing an electronic substrate of the electronic module. FIG. 8 is a cross-sectional view showing an electronic substrate of the electronic module. FIG. 9 is a diagram illustrating an electrical connection portion of the electronic module and a structure in the vicinity thereof. FIG. 10 is a diagram illustrating a method for manufacturing a wiring board of an electronic module. FIG. 11A and FIG. 11B are diagrams showing a connection state of the first and second wirings of the electronic module. FIG. 12 is a diagram illustrating a circuit of the electronic module. FIG. 13 is a diagram illustrating an electronic module according to an embodiment of the present invention. FIG. 14 is a plan view showing an electronic substrate of the electronic module according to the embodiment of the present invention. FIG. 15 is a cross-sectional view showing an electronic substrate of the electronic module according to the embodiment of the present invention. FIG. 16 is a view showing a modification of the wiring board of the electronic module according to the embodiment of the present invention. FIG. 17 is a diagram showing a circuit of the electronic module according to the embodiment of the present invention. FIG. 18 is a diagram illustrating an electronic apparatus according to an embodiment of the present invention. FIG. 19 is a diagram showing an electronic apparatus according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... 1st board | substrate, 12 ... EL part, 16, 18, 20, 22 ... 1st power supply wiring, 30 ... 1st signal wiring, 34 ... Scan driver, 36 ... 1st control wiring, 50 ... 1st 2 ... 52 ... integrated circuit chip 54 ... second power supply wiring 58 ... second signal wiring 62 ... second control wiring 68 ... connector terminal 110 ... electronic substrate 120, 122, 124 ... First terminal 150 ... Wiring substrate 152 ... Integrated circuit chip 160, 162, 164 ... Second terminal, 166 ... First wiring, 168 ... Second wiring, 170 ... Electrical connection, 210 ... Electronic board 240 ... Wiring board 242 ... Integrated circuit chip 244 ... Input terminal 250, 252, 254 ... Amplifier circuit 256 ... First circuit 258 ... Second circuit 260, 262, 264 266, 268 ... power supply wiring

Claims (10)

An electronic substrate;
A wiring board mounted on the electronic board and mounted with an integrated circuit chip;
Have
The wiring board is an electronic module having an input terminal and one or a plurality of amplifier circuits that amplify an external power source input to the input terminal to generate a plurality of different amplified power sources. The electronic module according to claim 1,
The integrated circuit chip is driven by the external power source,
An electronic module in which the electronic substrate is driven by the plurality of amplified power supplies. The electronic module according to claim 1 or 2,
An electronic module in which the amplifier circuit is formed in a region between the integrated circuit chip and the input terminal. The electronic module according to any one of claims 1 to 3,
The integrated circuit chip is mounted at the center in the width direction of the wiring board,
An electronic module in which a pair of amplifier circuits among the one or a plurality of amplifier circuits are formed on both ends in the width direction of the wiring board. The electronic module according to claim 4, wherein
The wiring board has a signal wiring extending from the integrated circuit chip toward the electronic substrate, and a power wiring extending from the pair of amplifier circuits toward the electronic substrate,
The electronic module is formed such that the power supply wiring is wider than the signal wiring. The electronic module according to any one of claims 1 to 5,
One amplifier circuit among the one or a plurality of amplifier circuits is configured by a first circuit formed in the integrated circuit chip and a second circuit provided separately from the integrated circuit chip. An electronic module. The electronic module according to claim 6, wherein
The second circuit is an electronic module including a capacitor. The electronic module according to claim 6, wherein
The second circuit is an electronic module including an inductor.   The electronic device which has an electronic module in any one of Claims 1-8. Inputting an external power supply to an input terminal formed on a wiring board on which an integrated circuit chip is mounted;
Amplifying the external power source by one or a plurality of amplifier circuits formed on the wiring board to generate a plurality of different amplified power sources; and
Driving an electronic board electrically connected to the wiring board by the plurality of different amplification power supplies;
A method for driving an electronic module comprising:

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