JP2020016818A - Electro-optical device, electronic apparatus, and mounting structure - Google Patents

Abstract

To provide an electro-optical device which can appropriately perform reinforcement of wiring formed on a driving IC, and an electronic apparatus and a mounting structure.SOLUTION: An electro-optical device 1 includes a wiring board 3 connected to an electro-optical panel and a driving IC 2 mounted on the wiring board 3. The driving IC 2 has first wiring 26 extending in one direction A. The wiring board 3 has a first reinforcement line 36 being connected to both end portions of the first wiring 26 at a position where overlapping with the driving IC 2 and electrically connected to the first wiring 26 in parallel. For example, the first wiring 26 extends from an input terminal 283 up to terminals 284 and 285, and the wiring board 3 has wiring 34 feeding power to the input terminal 283 via an electrode 383 connected with the input terminal 283 and the first reinforcement line 36 connected to electrodes 384 and 385 connected with the terminals 284 and 285.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an electro-optical device in which a driving IC is mounted on a wiring board connected to an electro-optical panel, an electronic apparatus including the electro-optical device, and a mounting structure in which the driving IC is mounted on a wiring substrate. Things.

  2. Description of the Related Art An active drive type liquid crystal device, which is an example of an electro-optical device, is frequently used as a light modulation unit (light valve) of a projection display device. In such an electro-optical device, a driving IC is mounted on a flexible wiring board connected to the electro-optical panel, and an image is displayed based on an image signal output from the driving IC (see Patent Document 1). Further, the electro-optical device described in Patent Document 1 adopts a configuration in which a precharge period is provided in each horizontal scanning period, and a precharge voltage is supplied to each pixel in the precharge period, thereby preventing vertical crosstalk. ing.

  On the other hand, in the electro-optical device in which the driving IC is mounted on the glass wiring board used for the electro-optical panel and the flexible wiring board is connected to the wiring board on the glass, the flexible wiring is used to reinforce the wiring in the driving IC. A configuration using wiring on a substrate is described.

JP-A-2005-232590 JP 2008-180848 A

  In the configuration in which a precharge voltage is generated by an operational amplifier in a driving IC when precharging is performed in the electro-optical device described in Patent Literature 1, the power supply potential is likely to fluctuate in the driving IC. On the other hand, when the precharge voltage is supplied to the driving IC via the flexible wiring board, the precharge voltage output from each output circuit of the driving IC is affected by the resistance of the wiring to which the precharge voltage is supplied in the driving IC. There is a problem that the charge voltage tends to fluctuate. On the other hand, a structure for reinforcing the wiring in the driving IC is described in Patent Literature 2. In such a configuration, the reinforcing wiring on the glass wiring board—the reinforcing wiring of the flexible wiring board—the reinforcing wiring of the glass wiring board is used. are doing. For this reason, the wiring length becomes long, the resistance cannot be sufficiently reduced, and the reinforcing wiring has a problem that a great restriction is imposed on the wiring layout on the glass wiring board or the flexible wiring board.

  In view of the above problems, it is an object of the present invention to provide an electro-optical device, an electronic device, and a mounting structure capable of appropriately reinforcing wiring formed on a driving IC.

  In order to solve the above problem, an electro-optical device according to the present invention includes an electro-optical panel, a wiring board connected to the electro-optical panel, and a driving IC mounted on the wiring board, The driving IC has a first wiring extending in one direction, and the wiring board has a first reinforcing wire electrically connected in parallel to the first wiring at a position overlapping with the driving IC. It is characterized by the following.

  In the electro-optical device according to the present invention, the first reinforcing wire formed on the wiring board is electrically connected in parallel to the first wiring extending in one direction inside the driving IC. This has the same effect as reducing the resistance of the first wiring. Therefore, the voltage of the first wiring does not easily change in one direction in which the first wiring extends. Further, since the first reinforcement line is provided at a position overlapping with the driving IC, the layout of the first reinforcement line is hardly affected by other wirings of the wiring board. Further, since the first reinforcing wire is provided at a position overlapping with the driving IC, it does not easily affect the wiring layout on the wiring board. Therefore, it is possible to appropriately reinforce the wiring formed on the driving IC.

  In the electro-optical device according to the aspect of the invention, an aspect may be employed in which the first reinforcing lines are electrically connected at both ends in the extending direction of the first wiring.

  In the electro-optical device according to the present invention, an aspect may be adopted in which the wiring substrate supplies power to an end of the first wiring on the opposite side in the one direction. According to this aspect, there is an advantage that an electrode or a terminal for supplying a voltage from the wiring board to the first wiring may be provided at one position at the end of the driving IC.

  In the electro-optical device according to the aspect of the invention, the driving IC may include a plurality of output circuits arranged in the one direction, and the first wiring may supply power to each of the plurality of output circuits. be able to.

  In the electro-optical device according to the present invention, in the electro-optical panel, a plurality of first pixels in which a plurality of first pixels are arranged in a first direction are arranged in a plurality in a second direction intersecting the first direction. A first pixel group, a second pixel group in which a plurality of second pixels are arranged along the first direction, a second pixel group in which a plurality of second pixels are arranged along the first direction, and the first pixel group. And a selection circuit for selecting the first pixel row and the second pixel row to which an image signal is to be supplied from each of the first pixel group and the second pixel group. A first output terminal for outputting the image signal to be supplied to the second pixel group, and a second output terminal for outputting an image signal to be supplied to the second pixel group at a position separated in the one direction. Output circuit supplies the first pixel group and the second pixel group to each other. Can be adopted a mode of outputting a voltage from said first wiring through the first output terminal and said second output terminal. In such a case, it is unlikely that the precharge voltage output from the first output terminal and the precharge voltage output from the second output terminal vary.

  In the electro-optical device according to the aspect of the invention, the driving IC may include a first terminal connected to the first wiring and a second terminal separated from the first terminal in the other direction that intersects the one direction. And a third terminal separated from the first terminal and the second terminal in the one direction, wherein the wiring board includes a first electrode to which the first terminal is connected, and a second electrode connected to the second terminal. A second electrode to which a terminal is connected, a third electrode to which the third terminal is connected, and a wiring for supplying power to the first wiring via the first electrode, wherein the first wiring comprises: A first portion for connecting the first terminal and the second terminal, a second portion extending in the one direction from the first portion, and a third terminal extending from the second portion; And a third portion connected to the third electrode, wherein the first reinforcing wire extends from the second electrode to the third electrode. It can be adopted a mode that Mashimashi.

  In the electro-optical device according to the aspect of the invention, an aspect may be adopted in which the first reinforcing line further extends from the first electrode to the second electrode.

  In the electro-optical device according to the present invention, the driving IC has a first terminal connected to the first wiring, and a second terminal separated from the first terminal in the one direction. The wiring board has a first electrode to which the first terminal is connected, a second electrode to which the second terminal is connected, and a wiring for supplying power to the first wiring via the first electrode. The first wiring may extend from the first terminal to the second terminal, and the first reinforcing line may extend from the first electrode to the second electrode. .

  In the electro-optical device according to the present invention, the driving IC has a second wiring extending in the one direction, and the wiring board is electrically connected to the second wiring in a position overlapping the driving IC. A mode having a second reinforcing wire connected in a symmetrical manner may be adopted.

  In the electro-optical device according to the present invention, it is possible to adopt an aspect in which the wiring substrate is a single-layer substrate in which wiring is formed of the same metal layer. In the electro-optical device according to the present invention, an aspect in which the wiring board is a flexible wiring board can be adopted.

  In the electro-optical device according to the present invention, an aspect may be employed in which a plurality of the wiring boards on which the driving ICs are mounted are connected to the optical panel.

  The electro-optical device according to the present invention can be used for various electronic devices. When the electronic apparatus is a projection display device, the projection display device is a light source unit that emits light supplied to the electro-optical device, and a projection optical system that projects light modulated by the electro-optical device, have.

  Another embodiment of the present invention is a mounting structure including a wiring board and a driving IC mounted on one surface of the wiring board, wherein the driving IC has a first wiring extending in one direction. The wiring board has a first reinforcing wire electrically connected in parallel with the first wiring at a position overlapping the driving IC.

  In the mounting structure according to the present invention, since the first reinforcing wire formed on the wiring board is electrically connected in parallel to the first wiring extending in one direction inside the driving IC, This has the same effect as reducing the resistance of the first wiring. Therefore, the voltage of the first wiring does not easily change in one direction in which the first wiring extends. Further, since the first reinforcement line is provided at a position overlapping with the driving IC, the layout of the first reinforcement line is hardly affected by other wirings of the wiring board. Further, since the first reinforcing wire is provided at a position overlapping with the driving IC, it does not easily affect the wiring layout on the wiring board. Therefore, it is possible to appropriately reinforce the wiring formed on the driving IC.

  In the mounting structure according to the present invention, the driving IC has a second wiring extending in the one direction, and the wiring board electrically connects the second wiring in a position overlapping the driving IC. A mode having a second reinforcing wire connected in a symmetrical manner may be adopted.

FIG. 1 is an explanatory diagram schematically showing one embodiment of an electro-optical device to which the present invention is applied. FIG. 2 is an explanatory diagram illustrating an electrical configuration of the electro-optical device illustrated in FIG. 1. FIG. 3 is an explanatory diagram illustrating a configuration of a pixel and a data line selection circuit illustrated in FIG. 2. 2 is a timing chart showing an operation example of the electro-optical device shown in FIG. FIG. 2 is an explanatory diagram illustrating a configuration of a driving IC illustrated in FIG. 1. FIG. 6 is an explanatory diagram schematically showing a first example of a reinforcing structure for the first wiring and the second wiring shown in FIG. 5. FIG. 6 is an explanatory diagram schematically showing a second example of a reinforcing structure for the first wiring and the second wiring shown in FIG. 5. FIG. 6 is an explanatory diagram schematically showing a third example of a reinforcing structure for the first wiring and the second wiring shown in FIG. 5. 1 is a schematic configuration diagram of a projection display device using an electro-optical device to which the present invention has been applied.

  Embodiments of the present invention will be described with reference to the drawings. In the drawings referred to in the following description, the scale of each member is different in order to make each member or the like large enough to be recognized in the drawings.

[Configuration of the electro-optical device 1]
(Basic configuration)
FIG. 1 is an explanatory diagram schematically showing one embodiment of an electro-optical device 1 to which the present invention is applied. The electro-optical device 1 illustrated in FIG. 1 is a liquid crystal device used as a light valve or the like to be described later. In the electro-optical panel 100, a counter substrate 102 on which a common electrode (not shown) and the like are formed is attached to an element substrate 101 on which a pixel electrode (not shown) and the like are formed by a sealing material (not shown). Have been combined. In the electro-optical panel 100, a liquid crystal material (not shown) is provided in a region surrounded by the sealant. The electro-optical panel 100 of this embodiment is a transmissive liquid crystal panel. Therefore, a light-transmitting substrate such as a heat-resistant glass or a quartz substrate is used for the element substrate 101 and the counter substrate 102.

  In the electro-optical device 1 of the present embodiment, the wiring substrate 3 (the mounting structure 4 / the mounting substrate) on which the driving IC 2 is mounted is connected to the element substrate 10 of the electro-optical panel 100. Image signals and the like are output to the optical panel 100 via the wiring board 3. Therefore, a plurality of output electrodes 302 are formed at positions overlapping the element substrate 10 at the end of the wiring substrate 3, while a plurality of output electrodes 302 are connected to the end of the element substrate 10, respectively. A plurality of terminals such as an image signal input terminal 16 are formed. In this embodiment, a plurality of wiring boards 3 (mounting structures 4) on which the driving ICs 2 are mounted are connected. More specifically, the element substrate 10 includes a first wiring substrate 31 (first mounting structure 41) on which the first driving IC 21 is mounted, and a second wiring substrate 32 on which the second driving IC 22 is mounted. (The second mounting structure 42), and the image signals and the like from the first driving IC 21 and the second driving IC 22 to the electro-optical panel 100 via the first wiring board 31 and the second wiring board 32. Is output. Therefore, a plurality of output electrodes 312 (output electrodes 302) are formed at positions overlapping the element substrate 10 at the end of the first wiring board 31, while image signal input terminals are formed at the end of the element substrate 10. 161 (image signal input terminal 16) are formed. A plurality of output electrodes 322 (output electrodes 302) are formed at positions overlapping the element substrate 10 at the end of the second wiring substrate 32, while an image signal input terminal is formed at the end of the element substrate 10. A plurality of terminals such as 162 (image signal input terminal 16) are formed. The image signal input terminals 161 and 162 are arranged along the edge of the element substrate 10 at positions shifted in the y direction. Further, the image signal input terminal 161 and the image signal input terminal 162 are shifted from each other in the x direction.

  A single-sided wiring board is used as the wiring board 3 (the first wiring board 31 and the second wiring board 32). The wiring board 3 may be a single-layer board in which the wiring is formed of the same metal layer or a multilayer board in which the wiring is formed of a plurality of metal layers. In the present embodiment, the wiring board 3 is a single-layer board. Consists of The wiring board 3 (the first wiring board 31 and the second wiring board 32) is a flexible wiring board. Therefore, the wiring board 3 (the first wiring board 31 and the second wiring board 32) is a so-called COF (Chip On Film).

(Electrical configuration of electro-optical device 1)
FIG. 2 is an explanatory diagram illustrating an electrical configuration of the electro-optical device 1 illustrated in FIG. As shown in FIG. 2, the electro-optical panel 100 includes a display area 110, a scanning line driving circuit 130, a data line selection circuit 150 (selection circuit), n image signal lines 160, and n image signal input terminals 16. And k selection signal lines 140, k selection signal input terminals 145, a plurality of power terminals 171, 172, 173, and power lines 174, 175, 176 corresponding to the power terminals 171, 172, 173. have. n is an integer of 1 or more, and k is an integer of 2 or more. In the embodiment shown in FIG. 2, k = 4. These elements are formed on the element substrate 101 shown in FIG. On the element substrate 101, a data line selection circuit 150 is formed along one side of a peripheral portion of the display area 110, and a scanning line driving circuit 130 is formed along another side intersecting the side where the data line selection circuit 150 is formed. Are formed.

  The first driving IC 21 and the second driving IC 22 are provided with a clock signal and a control signal input from an external upper circuit (not shown) via the first wiring board 31 and the second wiring board 32 (see FIG. 1). And outputs an image signal indicating an image to be displayed on the electro-optical panel 100 according to the image data and the like. The electro-optical panel 100 displays an image based on a clock signal and an image signal input from the first driving IC 21, the first wiring board 31, the second driving IC 22, and the second wiring board 32. The first driving IC 21 and the second driving IC 22 have the same configuration, and output the same signal except for the image signal.

  The display area 110 is an area for displaying an image. The display area 110 has m scanning lines 112, (k × n) data lines 114, and (m × k × n) pixels 111. m is an integer of 1 or more. The pixels 111 are provided corresponding to intersections of the scanning lines 112 and the data lines 114, and are arranged in a matrix of m rows × (k × n) columns. The scanning line 112 is a signal line for transmitting the scanning signals Y1, Y2, Y3,... Ym, and is provided from the scanning line driving circuit 130 along the row direction (x direction). The data line 114 is a signal line for transmitting a data signal, and is provided from the data line selection circuit 150 in the column direction (y direction).

  In the display area 110, k × m pixels 111 corresponding to k (column) data lines 114 form one pixel group (block). For example, a first pixel group 111h in which a plurality of (m) first pixels 111a are arranged along the y direction and a plurality of (k columns) are arranged in the X direction, and a plurality of (m) first pixel groups 111h. And a second pixel group 111i in which a plurality of (k columns) second pixel columns 111f in which the second pixels 111b are arranged along the y direction are provided. Here, the pixels 111 belonging to the same pixel group are connected to the same image signal line 160 via the data line selection circuit 150. Therefore, the electro-optical panel 100 has n (column) pixel groups divided into n blocks by the n (column) image signal lines 160 or the n image signal input terminals 161.

  In the following description, when it is necessary to distinguish each of the plurality of scanning lines 112, the plurality of scanning lines 112 are referred to as a first row, a second row, a third row,... When it is necessary to distinguish each of the plurality of data lines 114, the data lines 114 are represented as a first column, a second column, a third column,... (K × n) columns. The same applies to the image signal line 160.

  The scanning line driving circuit 130 selects a row in which data is to be written, from the plurality of pixels 111 arranged in a matrix. Specifically, the scanning line driving circuit 130 outputs a scanning signal for selecting one scanning line 112 from the plurality of scanning lines 112. The scanning line driving circuit 130 supplies the scanning signals Y1, Y2, Y3,... Ym to the scanning lines 112 of the first, second, third,. The scanning signals Y1, Y2, Y3,..., Ym are, for example, sequentially high level signals.

  The data line selection circuit 150 selects a column (pixel column) of the pixel 111 to which an image signal is written in each pixel group. Specifically, the data line selection circuit 150 selects at least one data line 114 from the k data lines 114 belonging to the pixel group in accordance with the selection signals SEL [1] to SEL [k]. I do. The data lines 114 are connected to one image signal line 160 one by one by the data line selection circuit 150 in units of k lines. In the present embodiment, the data line selection circuit 150 has n demultiplexers 151 corresponding to each of the n pixel groups. The detailed configurations of the demultiplexer 151 and the pixel 111 will be described later with reference to FIG.

  The image signal line 160 connects between the image signal input terminal 16 and the data line selection circuit 150. The image signal line 160 converts the image signals S (S [1] to S [n]) input from the first wiring board 31 and the second wiring board 32 via the image signal input terminal 16 into a data line selection circuit. A signal line to be transmitted to 150, and n columns (lines) are provided corresponding to each of the n image signal input terminals 16 or the n pixel groups. The image signal S is a signal indicating data to be written to the pixel 111. Here, “image” refers to a still image or a moving image. One image signal line 160 is connected to k data lines 114 via a data line selection circuit 150. Therefore, in the image signal S, the data supplied to the k data lines 114 are time-division multiplexed.

  The selection signal line 140 connects between the selection signal input terminal 145 and the demultiplexer 151 of the data line selection circuit 150. The selection signal line 140 (140 [1] to 140 [k]) is connected to the selection signal SEL (SEL [1] to SEL [k]) input from the selection signal input terminal 145 (145 [1] to 145 [k]). ), And k signal lines are provided. The selection signal SEL is a signal that sequentially goes high.

  The image signal input terminal 16 is a terminal (electrode pad) to which the first wiring board 31 and the second wiring board 32 are connected, and is supplied with the image signal S [j] (j is 1 ≦ j ≦ n). Integer to fill). In this example, an image is input from the first driving IC 21 to the image signal input terminals 16 corresponding to the odd-numbered image signal lines 160 in the first, third, fifth,... (2t-1) th columns. The signals S [1], S [3], S [5],... S [2t-1] are supplied (t is an integer of 1 ≦ t ≦ n / 2). Further, the image signal S [2] is supplied from the second driving IC 22 to the image signal input terminals 16 corresponding to the image signal lines 160 of the even-numbered columns of the second, fourth, sixth,... , S [4], S [6],... S [2t]. The image signal S is a so-called data signal, and an analog signal having a different waveform according to the display of an image is supplied to the image signal input terminal 16.

  The selection signal input terminal 145 is a terminal (electrode pad) connected to the first wiring board 31 and the second wiring board 32, and receives a selection signal SEL composed of a pulse signal. The selection signal SEL is a timing signal for selecting the data line 114 in the data line selection circuit 150. The selection signal input terminal 145 includes a terminal to which the first wiring board 31 is connected and a terminal to be connected to the second wiring board 32, and includes the first driving IC 21 and the second wiring of the first wiring board 31. The selection signal SEL is supplied from both or one of the second driving ICs 22 on the substrate 32. In the present embodiment, the selection signal SEL having the same waveform is supplied to the selection signal input terminals 145 corresponding to each of the first wiring board 31 and the second wiring board 32. Therefore, as for the selection signal input terminal 145, the terminal connected to the first wiring board 31 and the terminal connected to the second wiring board 32 are shown without distinction.

  The power supply terminal 171, the power supply terminal 172, and the power supply terminal 173 are terminals (electrode pads) connected to the first wiring board 31 and the second wiring board 32, and pass through the first driving IC 21 and the second wiring board 32. Instead, the power supply voltage is supplied from the upper circuit via the first wiring board 31 and the second wiring board 32. The power supply voltage is a voltage used as a power supply in the electro-optical panel 100, and is a DC voltage in this example. The power supply terminal 171 is a terminal for supplying the voltage LCCOM, the power supply terminal 172 is a terminal for supplying the voltage VSSY, and the power supply terminal 173 is a terminal for supplying the voltage VDDY. The voltage LCCOM is a voltage serving as a reference potential of a voltage applied to the liquid crystal layer. The voltage VSSY is a voltage that is a power supply potential on the low voltage side in the scanning line driving circuit 130. The voltage VDDY is a voltage that is a power supply potential on the high voltage side in the scanning line driving circuit 130.

  The power supply terminals 171, 172, and 173 may be provided on both sides in the x direction. This is to support a configuration in which one scanning line driving circuit 130 is provided on each of the left and right sides of the element substrate 101. In this embodiment, since only one scanning line driving circuit 130 is configured, the power supply terminals 172 and 173 are provided only on one side in the x direction.

(Configuration of Demultiplexer 151 and Pixel 111)
FIG. 3 is an explanatory diagram showing the configuration of the pixel 111 and the data line selection circuit 150 shown in FIG. FIG. 3 shows the pixels 111 at the (k × j−k + 1) th to (k × j) th columns in the i-th row and the demultiplexer 151 corresponding to them in the display area 110 (i is , 1 ≦ i ≦ m).

  The pixel 111 has a pixel switching element 116 such as a TFT (Thin Film Transistor), a pixel electrode 118, a liquid crystal layer 120, a common electrode 108, and a storage capacitor 117. The pixel switching element 116 is a switching element that controls writing of data (application of voltage) to the pixel electrode 118. In this embodiment, the pixel switching element 116 is an n-channel type field effect transistor. The gate electrode of the pixel switching element 116 is connected to the scanning line 112, the source electrode is connected to the data line 114, and the drain electrode is connected to the pixel electrode 118. When a high-level scanning signal is supplied to the scanning line 112, the pixel switching element 116 is turned on, and an image signal is supplied to the pixel electrode 118. When a low-level scan signal is supplied to the scan line 112, the pixel switching element 116 is turned off. The common electrode 108 is common to all the pixels 111. A common voltage LCCOM is applied to the common electrode 108. A voltage corresponding to a potential difference between the pixel electrode 118 and the common electrode 108 is applied to the liquid crystal layer 120, and optical characteristics (transmittance or reflectance) change according to the voltage. The storage capacitor 117 holds a charge corresponding to a potential difference between the pixel electrode 118 and the common voltage VCOM. In this embodiment, the common voltage VCOM and the common voltage LCCOM are equal. Hereinafter, when distinguishing each of the elements included in the pixel 111 in a certain pixel group, the distinction is represented by a pixel switching element 116 [s] (s is an integer satisfying 1 ≦ s ≦ k). .

  The demultiplexer 151 is a circuit that supplies the image signal S to the data line 114 selected according to the selection signals SEL [1] to SEL [k]. For example, the demultiplexer 151 selects the first pixel column 111e and the second pixel column 111f to which the image signal is to be supplied from each of the first pixel group 111h and the second pixel group 111i shown in FIG. The image signal S input from the image signal input terminal 16 is supplied to the demultiplexer 151 via the image signal line 160. One demultiplexer 151 has one image signal input unit, k selection signal input units, k image signal output units, and k switching elements 152 (152 [1] to 152 [k]). ), One image signal input terminal 161 via the image signal line 160, and k selection signal input terminals 145 (145 [1] to 145 [k]) via the selection signal line 140; It is connected to k data lines 114. The switching element 152 is a switching element for selecting the data line 114 (pixel column) according to the selection signal SEL input to the gate.

  The gate electrode of the switching element 152 [1] is connected to the selection signal line 140 [1], the source electrode is connected to the image signal line 160 in the j-th column, and the drain electrode is the data line in the (4j-3) -th column. 114 (that is, the source electrode of the pixel switching element 116 [1] of the j-th pixel group). When the high-level selection signal SEL [1] is supplied to the selection signal line 140 [1], the switching element 152 is turned on, and the j-th image signal line 160 and the (4j-3) -th data line are provided. 114 is in a low impedance state and is conductive. That is, the image signal S [j] is supplied to the data line 114 in the (4j-3) th column. When the low-level selection signal SEL [1] is supplied to the selection signal line 140 [1], the switching element 152 [1] is turned off, and the jth image signal line 160 and the (4j-3) th column are turned off. Data line 114 is in a high impedance state.

  The gate electrode of the switching element 152 [2] is connected to the selection signal line 140 [2], the source electrode is connected to the image signal line 160 of the j-th column, and the drain electrode is the data line of the (4j-2) -th column. 114 is connected. When the high-level selection signal SEL [2] is supplied to the selection signal line 140 [2], the switching element 152 [2] is turned on, and the j-th image signal line 160 and the (4j-2) -th column are turned on. Is electrically connected to the data line 114. That is, the image signal S [j] is supplied to the data line 114 in the (4j-2) th column. When the low-level selection signal SEL [2] is supplied to the selection signal line 140 [2], the switching element 152 [2] is turned off, and the image signal line 160 of the j-th column and the (4j-2) -th column Data line 114 is in a high impedance state.

  The gate electrode of the switching element 152 [3] is connected to the selection signal line 140 [3], the source electrode is connected to the j-th column image signal line 160, and the drain electrode is the (4j-1) -th column data line. 114 (that is, the source electrode of the pixel switching element 116 [3] of the j-th pixel group). When the high-level selection signal SEL [3] is supplied to the selection signal line 140 [3], the switching element 152 [3] is turned on, and the j-th image signal line 160 and the (4j-1) -th column are turned on. Is electrically connected to the data line 114. That is, the image signal S [j] is supplied to the data line 114 of the (4j-1) th column. When the low-level selection signal SEL [3] is supplied to the selection signal line 140 [3], the switching element 152 [3] is turned off, and the image signal line 160 of the j-th column and the (4j-1) -th column Data line 114 is in a high impedance state.

  The gate electrode of the switching element 152 [4] is connected to the selection signal line 140 [4], the source electrode is connected to the j-th column image signal line 160, and the drain electrode is the 4j-th column data line 114 (ie, (The source electrode of the pixel switching element 116 [4] of the pixel group in the j-th column). When the high-level selection signal SEL [4] is supplied to the selection signal line 140 [4], the switching element 152 [4] is turned on, and the j-th image signal line 160 and the 4j-th data line 114 are provided. Are conducted. That is, the image signal S [j] is supplied to the data line 114 of the 4jth column. When the low-level selection signal SEL [4] is supplied to the selection signal line 140 [4], the switching element 152 [4] is turned off, and the image signal line 160 in the j-th column and the data line 114 in the 4j-th column are turned off. Are in a high impedance state.

(motion)
FIG. 4 is a timing chart showing an operation example of the electro-optical device 1 shown in FIG. In FIG. 4, the horizontal synchronization signal Hsync, the scanning signals Y1, Y2, Y3... Ym, the selection signals SEL [1] to [k] corresponding to the timings at which the scanning signals Y1, Y2, Y3,. The signals S [1] to S [n] are illustrated.

  In the image signal S [j], data to be written to the pixels 111 of the [k × j−k + 1] to [k × j] columns, which are the k pixels 111 of the corresponding pixel group, are time-division multiplexed. I have. If S [j] is an odd-numbered S [2t-1], the first driving IC 21 supplies the data line 114 to the odd-numbered pixel group. If S [j] is an even-numbered S [2t], the second driving IC 22 supplies the data line 114 to the even-numbered pixel group. According to such a configuration, two driving ICs, ie, the first driving IC 21 and the second driving IC 22, are used. Therefore, the number of pixels is twice as large in one cycle as compared with the case where one driving IC is used. Data can be written to the memory.

  In displaying an image based on the timing chart shown in FIG. 4, in the present embodiment, a precharge period Tpr is provided for each horizontal scanning period H, and in such a precharge period Tpr, the image signals S1 to S ( n) is set to the precharge voltage Vpr. The precharge voltage Vpr is output from the first driving IC 21 and the second driving IC 22 similarly to the image signals S1 to S (n). In the precharge period Tpr, the selection signals SEL [1] to SEL [k] are at a high level. Therefore, the precharge voltage Vpr is supplied to all the data lines 114 via the data line selection circuit 150 for each horizontal scanning period H, and thereafter, the image signals S1 to S [n] are supplied. .

  In the present embodiment, the electro-optical device 1 employs a driving method in which the polarities of the image signals S1 to S (n) are inverted for each frame. Therefore, after the first precharge voltage Vpr1 of the positive polarity is supplied to all the data lines 114 in the precharge period Tpr, in the next horizontal scanning period H, the second precharge voltage Vpr2 of the negative polarity in the precharge period Tpr. Is supplied to all the data lines 114.

(Configuration of driving IC 2)
The configuration of the driving IC 2 shown in FIG. 1 will be described with reference to FIG. FIG. 5 is an explanatory diagram showing the configuration of the driving IC 2 shown in FIG. In the following description, since the first driving IC 21 and the second driving IC 22 have the same configuration, the first driving IC 21 and the second driving IC 22 will be described as the driving IC 2 without distinction. . FIG. 5 shows only a portion related to the image signal output circuit 240 among wirings, circuits, and the like formed in the driving IC 2 for easy understanding of characteristics.

  In FIG. 5, a driving IC 2 (first driving IC 21 and second driving IC 22) includes a plurality of (n / 2) output circuits 240 for outputting image signals and one horizontal scan of image data for one frame. It has a data processing circuit 200 that converts the data into digital data for each period H and outputs the digital data to the output circuit 240, and a control circuit 250 that controls the timing of outputting various signals and voltages. Various data and signals are input to the data processing circuit 200 and the control circuit 250 from the wiring board 3 shown in FIG. 1 via the input terminal 281 of the driving IC 2. The plurality of output circuits 240 are arranged in one direction A of the driving IC 2, and the one direction A is a direction along the long side of the driving IC 2. Although not shown, the drive IC 2 is also provided with a generation circuit and an output circuit for the selection signal SEL.

  Each of the plurality of output circuits 240 includes a DA conversion circuit 203 that converts digital data output from the data processing circuit 200 into an analog signal, and an operational amplifier 204 that amplifies the analog signal output from the DA conversion circuit 203. The tip of an output line 208 extending from the operational amplifier 204 in the other direction B (a direction intersecting the one direction A; a direction along a short side of the driving IC 2) is connected to an output terminal 282 of the driving IC 2. ing. A switch 205 is inserted at an intermediate position of the output line 208, and the switch 205 performs an opening and closing operation under the control of the control circuit 250. Note that among the output terminals 282, the first output terminal 282a outputs an image signal to the first pixel group 111h shown in FIG. 2, and the second output terminal 282b outputs an image signal to the second pixel group 111i shown in FIG. Is output.

  In the driving IC 2, a first wiring 26 extending in one direction A extends, and the first wiring 26 has a positive electrode from the wiring board 3 shown in FIG. 1 via an input terminal 283 of the driving IC 2. The first precharge voltage Vpr1 is supplied. The first wiring 26 is connected via a switch 206 to a portion of all the output lines 208 connecting the switch 205 and the output terminal 282. The switch 206 performs an opening / closing operation under the control of the control circuit 250.

  Further, a second wiring 27 extending in one direction A extends to the driving IC 2, and the input terminal 286 of the driving IC 2 from the wiring board 3 shown in FIG. The second precharge voltage Vpr2 of the negative polarity is supplied through this. The second wiring 27 is connected via a switch 207 to a portion connecting the switch 205 and the output terminal 282 of all the output lines 208, and the switch 207 operates under the control of the control circuit 250. I do.

  Therefore, when the switch 206 is turned on and the switches 205 and 207 are turned off in the precharge period Tpr shown in FIG. 5, the driving IC 2 is electrically connected via the output line 208, the output terminal 282, and the wiring board 3. Since the first precharge voltage Vpr1 is output to the optical panel 100, the first precharge voltage Vpr1 can be supplied to all the data lines 114. Thereafter, when the switch 205 is turned on and the switches 206 and 207 are turned off, the driving IC 2 supplies an image signal to the electro-optical panel 100 via the output line 208, the output terminal 282, and the wiring board 3. Can be.

  Further, in the precharge period Tpr of the next horizontal scanning period H shown in FIG. 5, when the switch 207 is turned on and the switches 205 and 206 are turned off, the driving IC 2 outputs the output line 208, the output terminal 282, and The second precharge voltage Vpr2 can be output to the electro-optical panel 100 via the wiring board 3, and the second precharge voltage Vpr2 can be supplied to all the data lines 114. Thereafter, when the switch 205 is turned on and the switches 206 and 207 are turned off, the driving IC 2 supplies an image signal to the electro-optical panel 100 via the output line 208, the output terminal 282, and the wiring board 3. Can be.

(First example of wiring reinforcement structure of mounting structure 4)
FIG. 6 is an explanatory diagram schematically showing a first example of a reinforcing structure for the first wiring 26 and the second wiring 27 shown in FIG. In FIG. 6, the terminals of the driving IC 2 and the electrodes and wirings of the wiring board 3 are shown in a small number for easy understanding of the characteristics. In addition, as for wirings, circuits, and the like formed in the driving IC 2, only wirings to which the precharge voltage Vpr is applied are shown. In the following description, the first driving IC 21 and the second driving IC 22 are referred to as the driving IC 2 without distinction, and the first wiring board 31 and the second wiring board 32 are referred to as the wiring board 3 without distinction. The first mounting structure 41 and the second mounting structure 42 will be described as the mounting structure 4 without distinction.

  In the mounting structure 4 shown in FIG. 6, in the wiring board 3, a plurality of input electrodes 301 connected to an upper circuit (not shown) are provided at one end located on the side opposite to the electro-optical panel 100. Are arranged, and a plurality of output electrodes 302 connected to the electro-optical panel 100 are formed at the other end. Further, between the input electrode 301 and the output electrode 302 of the wiring board 3, a mounting area 30 in which the driving IC 2 is mounted is formed.

  In the mounting area 30, electrodes 381 to which the input terminals 281 of the driving IC 2 and the like are connected are arranged along one direction A at the end on the input electrode 301 side. The electrode 381 includes an electrode 383 to which the input terminal 283 of the driving IC 2 is connected, and an electrode 386 to which the input terminal 286 of the driving IC 2 is connected. Each of the plurality of input electrodes 301 is connected to the plurality of electrodes 381 via the wiring 34. In the mounting area 30, a plurality of electrodes 382 to which the output terminal 282 of the driving IC 2 is connected are arranged along one direction A at an end on the side of the output electrode 302. Each of the plurality of electrodes 382 is connected to the plurality of output electrodes 302 via the wiring 35.

  In the wiring board 3, two electrodes 384 and 387 to which the wiring 35 is not connected are formed in a region adjacent to the region where the plurality of electrodes 382 are arranged on the side opposite to the one direction A, and Two electrodes 385 and 388 to which the wiring 35 is not connected are formed in a region on the opposite side of the electrode 382 from the electrodes 384 and 387 (a region separated from the electrodes 384 and 387 in one direction A). ing. On the other hand, in the driving IC 2, a region adjacent to the region where the plurality of output terminals 282 are arranged on the opposite side in the one direction A is provided with a terminal 284 connected to the electrode 384 and a terminal connected to the electrode 387. 287 are formed. In the driving IC 2, a terminal connected to the electrode 385 is provided in a region on the opposite side of the plurality of output terminals 282 from the terminals 284 and 287 (a region separated from the terminals 284 and 287 in one direction A). 285 and a terminal 288 connected to the electrode 388 are formed.

  In this embodiment, the terminal 284 is arranged at a position separated from the input terminal 283 in the other direction B, and the terminal 287 is arranged at a position separated from the input terminal 286 in the other direction B. Therefore, in the wiring board 3, the electrode 384 is arranged at a position separated from the electrode 383 in the other direction B, and the electrode 387 is arranged at a position separated from the electrode 386 in the other direction B.

In this embodiment, each of the input terminals 283, terminals 284, 285, and the electrodes 383, 384, 385, and the "first terminal", "second terminal", "third terminal", "first electrode", The relationship between the “second electrode” and the “third electrode” is as follows.
Input terminal 283 = “first terminal” in the present invention
Terminal 284 = “second terminal” in the present invention
Terminal 285 = “third terminal” in the present invention
Electrode 383 = "first electrode" in the present invention
Electrode 384 = "second electrode" in the present invention
Electrode 385 = "third electrode" in the present invention

  In the mounting structure 4 configured as described above, the end of the first wiring 26 on the opposite side in the one direction A is connected to the input terminal 283 (first terminal), and the input terminal 283 is connected to the electrode 383 (first terminal). Electrode). Therefore, the wiring substrate 3 supplies the first precharge voltage Vpr1 to the first wiring 26 only through the end of the first wiring 26 opposite to the one direction A. Here, the first wiring 26 includes a first portion 261 for connecting the input terminal 283 (first terminal) and the terminal 284 (second terminal), and a first portion 261 extending in one direction A from the first portion 261. A second portion 262 and a third portion 263 extending from the second portion 262 and connecting to the terminal 285 (third terminal) are provided. The wiring board 3 has a first reinforcing wire 36 electrically connected in parallel to the first wiring 26 at a position overlapping the driving IC 2. In the present embodiment, the first reinforcing wire 36 is connected to the electrode 384 (second electrode) and the electrode 385 (third electrode), and is electrically connected to both ends in the extending direction of the first wiring 26. It is connected.

  In the mounting structure 4 of the present embodiment, the second wiring 27 has an end opposite to the one direction A connected to the input terminal 286 (fourth terminal), and the input terminal 286 is connected to the electrode 386 (fourth terminal). Electrode). Therefore, the wiring board 3 supplies the second precharge voltage Vpr2 to the second wiring 27 only through the end of the second wiring 27 on the opposite side in the one direction A. Here, the second wiring 27 includes a fourth portion 271 for connecting the input terminal 286 (fourth terminal) and the terminal 287 (fifth terminal), and a second portion 27 extending in one direction A from the fourth portion 271. A fifth portion 272 and a sixth portion 273 extending from the fifth portion 272 and connecting to the terminal 288 (sixth terminal) are provided. The wiring board 3 has a second reinforcing wire 37 electrically connected in parallel with the second wiring 27 at a position overlapping the driving IC 2. In this embodiment, the second reinforcing wire 37 is connected to the electrode 387 (fifth electrode) and the electrode 388 (sixth electrode), and is electrically connected to both ends of the second wiring 27 in the extending direction. It is connected.

  Therefore, in the electro-optical device 1 and the mounting structure 4 of the present embodiment, the first reinforcing wires 36 formed on the wiring board 3 are provided with respect to the first wirings 26 extending in the one direction A inside the driving IC 2. Since they are electrically connected in parallel, the same effect as when the resistance of the first wiring 26 is reduced can be obtained. Therefore, in the one direction A in which the first wiring 26 extends, the voltage of the first wiring 26 does not easily change. Therefore, a situation in which the first precharge voltage Vpr1 supplied to each pixel group such as the first pixel group 111h and the second pixel group 111i of the electro-optical panel 100 is unlikely to occur.

  Further, since the second reinforcing wire 37 formed on the wiring board 3 is electrically connected in parallel to the second wiring 27 extending in the one direction A inside the driving IC 2, the second wiring This has the same effect as lowering the resistance of No. 27. Therefore, in the one direction A in which the second wiring 27 extends, the voltage of the second wiring 27 does not easily change. Therefore, it is unlikely that the second precharge voltage Vpr2 supplied to each pixel group such as the first pixel group 111h and the second pixel group 111i of the electro-optical panel 100 varies.

  Further, since the first reinforcing lines 36 and the second reinforcing lines 37 are provided at positions overlapping the driving ICs 2, even if the wiring board 3 is a single-sided single-layer substrate, the first reinforcing lines 36 and the second reinforcing lines 37 are provided. The layout of the reinforcing wires 37 is less likely to be affected by other wiring of the wiring board 3. Further, even if the wiring substrate 3 is a single-sided single-layer substrate, the first reinforcing lines 36 and the second reinforcing lines 37 are provided at positions overlapping with the driving IC 2, so that the wiring layout on the wiring substrate 3 can be improved. Less likely to affect. Therefore, the first wiring 26 and the second wiring 27 formed on the driving IC 2 can be appropriately reinforced.

  Further, the first reinforcing wire 36 has the same effect as reducing the resistance of the first wiring 26, and the second reinforcing wire 37 has the same effect as reducing the resistance of the second wiring 27. Play. Therefore, the electrodes 383 and 386 for supplying a voltage from the wiring board 3 to the first wiring 26 and the second wiring 27 and the input terminals 283 and 286 may be provided at one position in the long side direction of the driving IC 2. There is.

(Second example of wiring reinforcement structure of mounting structure 4)
FIG. 7 is an explanatory diagram schematically showing a second example of a reinforcing structure for the first wiring 26 and the second wiring 27 shown in FIG. Note that the basic configuration of this example is the same as the embodiment described with reference to FIG. 6, and thus common portions are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 7, in the present embodiment, as in the embodiment shown in FIG. 6, the first wiring 26 is connected to the input terminal 283 (first terminal) and the terminal 284 (second terminal). A first portion 261, a second portion 262 extending from the first portion 261 in one direction A, and a third portion 263 extending from the second portion 262 and connected to the terminal 285 (third terminal). I have. The wiring board 3 has a first reinforcing wire 36 electrically connected in parallel to the first wiring 26 at a position overlapping the driving IC 2. In this embodiment, the first reinforcing wire 36 is connected to the electrode 384 (second electrode) and the electrode 385 (third electrode), and is also connected to the electrode 383 (first electrode) and the electrode 384 (second electrode). The first wiring 26 is electrically connected to both ends in the extending direction of the first wiring 26.

  Further, in the mounting structure 4 of the present embodiment, the second wiring 27 is formed from the fourth portion 271 that connects the input terminal 286 (fourth terminal) and the terminal 287 (fifth terminal) and the fourth portion 271. A fifth portion 272 extending in one direction A and a sixth portion 273 extending from the fifth portion 272 and connected to the terminal 288 (sixth terminal) are provided. The wiring board 3 has a second reinforcing wire 37 electrically connected in parallel with the second wiring 27 at a position overlapping the driving IC 2. In this embodiment, the second reinforcing wire 37 is connected to the electrode 387 (fifth electrode) and the electrode 388 (sixth electrode), and is also connected to the electrode 386 (fourth electrode) and the electrode 387 (fifth electrode). The second wiring 27 is electrically connected to both ends in the extending direction of the second wiring 27.

  In this embodiment, similarly to the embodiment described with reference to FIG. 6, the first reinforcing wires 36 formed on the wiring board 3 correspond to the first wires 26 extending in the one direction A inside the driving IC 2. They are electrically connected in parallel. For this reason, the same effect as the embodiment described with reference to FIG. 6 can be obtained, for example, the same effect as reducing the resistance of the first wiring 26 can be obtained.

(Third example of wiring reinforcement structure of mounting structure 4)
FIG. 8 is an explanatory diagram schematically showing a third example of a reinforcing structure for the first wiring 26 and the second wiring 27 shown in FIG. Note that the basic configuration of this example is the same as the embodiment described with reference to FIG. 6, and thus common portions are denoted by the same reference numerals, and description thereof is omitted.

  In the mounting structure 4 shown in FIG. 8, the wiring board 3 has two electrodes 385 to which the wiring 35 is not connected in a region separated in one direction A from a region in which the plurality of electrodes 382 are arranged. 388 are formed, and the electrodes 384 and 387 shown in FIG. 6 are not formed. On the other hand, the driving IC 2 has a terminal 285 connected to the electrode 385 and a terminal connected to the electrode 388 in a region separated in one direction A from a region in which the plurality of output terminals 282 are arranged. 288 are formed, and the terminals 284 and 287 shown in FIG. 6 are not formed.

In this embodiment, the relationship between each input terminal 283, terminal 285, and electrodes 383, 385 and the "first terminal", "second terminal", "first electrode", and "second electrode" in the present invention is as follows. It is as follows.
Input terminal 283 = “first terminal” in the present invention
Terminal 285 = “second terminal” in the present invention
Electrode 383 = "first electrode" in the present invention
Electrode 385 = “second electrode” in the present invention

  In the mounting structure 4 configured as described above, the end of the first wiring 26 on the opposite side in the one direction A is connected to the input terminal 283 (first terminal), and the input terminal 283 is connected to the electrode 383 (first terminal). Electrode). Therefore, the wiring board 3 supplies the first precharge voltage Vpr1 to the first wiring 26 only through the end of the first wiring 26 on the opposite side in the one direction A. Therefore, in the present embodiment, the first wiring 26 extends from the input terminal 283 (first terminal) to the terminal 285 (second terminal). The wiring board 3 has a first reinforcing wire 36 electrically connected in parallel to the first wiring 26 at a position overlapping the driving IC 2. In the present embodiment, the first reinforcing wire 36 extends from the electrode 383 (first electrode) to the electrode 385 (second electrode), and is electrically connected to both ends in the extending direction of the first wiring 26. It is connected.

  Further, the end of the second wiring 27 on the opposite side in the one direction A is connected to the input terminal 286, and the input terminal 286 is connected to the electrode 386. Therefore, the wiring substrate 3 supplies the second precharge voltage Vpr2 to the second wiring 27 only through the end of the second wiring 27 on the opposite side in the one direction A. Therefore, in the present embodiment, the second wiring 27 extends from the input terminal 286 to the terminal 288. The wiring board 3 has a second reinforcing wire 37 electrically connected in parallel with the second wiring 27 at a position overlapping the driving IC 2. In the present embodiment, the second reinforcing wire 37 extends from the electrode 386 to the electrode 388, and is electrically connected to both ends in the extending direction of the second wiring 27.

  In this embodiment, similarly to the embodiment described with reference to FIG. 6, the first reinforcing wires 36 formed on the wiring board 3 correspond to the first wires 26 extending in the one direction A inside the driving IC 2. They are electrically connected in parallel. For this reason, the same effect as the embodiment described with reference to FIG. 6 can be obtained, for example, the same effect as reducing the resistance of the first wiring 26 can be obtained.

[Other embodiments]
In the above embodiment, the wiring substrate 3 is a flexible wiring substrate. However, the present invention may be applied to a case where the driving IC 2 is mounted on the wiring substrate 3 formed of a rigid wiring substrate. In the above-described embodiment, the present invention is applied to the mounting structure 4 in which the driving IC 2 is mounted on the wiring substrate 3 connected to the electro-optical panel 100. However, the driving IC 2 is mounted on the element substrate 101 by a COG (Chip). The present invention may be applied to a mounting structure mounted on glass.

[Example of mounting on electronic equipment]
An electronic apparatus using the electro-optical device 1 according to the above-described embodiment will be described. FIG. 9 is a schematic configuration diagram of a projection display (electronic device) using the electro-optical device 1 to which the invention is applied.

  A projection display device 2100 illustrated in FIG. 9 is an example of an electronic device using the electro-optical device 1. In the projection display device 2100, the electro-optical device 1 is used as a light valve, and high-definition and bright display can be performed without increasing the size of the device. As shown in this figure, a lamp unit 2102 (light source unit) having a white light source such as a halogen lamp is provided inside the projection display device 2100. The projection light emitted from the lamp unit 2102 is converted into three primary colors of R (red), G (green), and B (blue) by three mirrors 2106 and two dichroic mirrors 2108 disposed inside. Separated. The separated projection light is guided to light valves 100R, 100G, and 100B corresponding to the respective primary colors. Since the light of B color has a longer optical path than other R and G colors, it is guided through a relay lens system 2121 having an entrance lens 2122, a relay lens 2123, and an exit lens 2124 to prevent the loss. I will

  In the projection display device 2100, three sets of liquid crystal devices including the electro-optical device 1 are provided corresponding to each of the R, G, and B colors. The configuration of the light valves 100R, 100G, and 100B is the same as that of the above-described electro-optical panel 100, and is connected to a higher-level circuit in the projection display device 2100 via the first wiring board 31 and the second wiring board 32, respectively. Is done. An image signal designating the gradation level of each of the primary colors of R, G, and B is supplied from an external upper circuit, processed by an upper circuit in the projection display device 2100, and is processed by the light valves 100R, 100G. And 100 are each driven. The light modulated by the light valves 100R, 100G, and 100B respectively enters the dichroic prism 2112 from three directions. In the dichroic prism 2112, the R and B lights are reflected at 90 degrees, and the G light is transmitted. Therefore, after the images of the primary colors are combined, a color image is projected on the screen 2120 by the projection lens group 2114 (projection optical system).

(Other projection display devices)
Note that the projection display device may be configured such that an LED light source or the like that emits light of each color is used as a light source unit, and the color light emitted from the LED light source is supplied to another liquid crystal device. .

(Other electronic devices)
The electronic device including the electro-optical device 1 to which the invention is applied is not limited to the projection display device 2100 of the above embodiment. For example, the present invention may be applied to electronic devices such as a projection-type HUD (head-up display), a direct-view-type HMD (head-mounted display), a personal computer, a digital still camera, and a liquid crystal television.

DESCRIPTION OF SYMBOLS 1 ... Electro-optical device, 2 ... Drive IC, 3 ... Wiring board, 34, 35 ... Wiring, 4 ... Mounting structure, 101 ... Element board, 16, 161, 162 ... Image signal input terminal, 102 ... Opposite board, 21 first driving IC, 22 second driving IC, 26 first wiring, 27 second wiring, 30 mounting area, 31 first wiring board, 32 second wiring board, 36 1 Reinforcement line, 37: Second reinforcement line, 41: First mounting structure, 42: Second mounting structure, 86, 381, 382, 383, 384, 385, 386, 387, 388: Electrode, 100: Electricity Optical panel, 100B, 100G, 100R: light valve, 108: common electrode, 110: display area, 111: pixel, 111a: first pixel, 111b: second pixel, 111e: first pixel column, 111f: second pixel Column, 111h... First pixel 111i: second pixel group, 112: scanning line, 114: data line, 116: pixel switching element, 118: pixel electrode, 120: liquid crystal layer, 130: scanning line driving circuit, 140: selection signal line, 145: selection Signal input terminal, 150: data line selection circuit (selection circuit), 151: demultiplexer, 160: image signal line, jth column image signal line, 171, 172, 173 ... power supply terminal, 174, 175, 176 ... Power supply line, 200 data processing circuit, 203 DA conversion circuit, 204 operational amplifier, 205, 206, 207 switch, 208 output line, 240 output circuit, 250 control circuit, 261 first part, 262 Second part, 263: third part, 271: fourth part, 272: fifth part, 273: sixth part, 281, 283, 286 ... input terminal, 282 Output terminal, 282a: First output terminal, 282b: Second output terminal, 284, 285, 287, 288: Terminal, 301: Input electrode, 302, 312, 322: Output electrode, 2100: Projection display device, 2102 ... Lamp unit (light source unit), 2106 mirror, 2108 dichroic mirror, 2112 dichroic prism, 2114 projection lens group (projection optical system), 2120 screen, 2121 relay lens system, 2122 incident lens, 2123 relay Lens, 2124: Outgoing lens, A: One direction, B: Other direction, H: Horizontal scanning period, S: Image signal, Y1, Y2, Y3, Y1 to Y3: Scan signal, SEL: Select signal, Tpr: Precharge Period, Vpr... Precharge voltage, Vpr1... First precharge voltage, Vpr2. Recharge voltage.

Claims (15)

An electro-optic panel,
A wiring board connected to the electro-optical panel,
A driving IC mounted on the wiring board;
Has,
The driving IC has a first wiring extending in one direction,
The electro-optical device according to claim 1, wherein the wiring substrate has a first reinforcing wire electrically connected in parallel to the first wiring at a position overlapping the driving IC. The electro-optical device according to claim 1,
The electro-optical device according to claim 1, wherein the first reinforcing wire is electrically connected to both ends in the extending direction of the first wiring. The electro-optical device according to claim 1, wherein
The electro-optical device according to claim 1, wherein the wiring substrate supplies power to an end of the first wiring opposite to the one direction. The electro-optical device according to any one of claims 1 to 3,
The driving IC has a plurality of output circuits arranged in the one direction,
The electro-optical device according to claim 1, wherein the first wiring supplies power to each of the plurality of output circuits. The electro-optical device according to claim 4,
The electro-optical panel includes: a first pixel group in which a plurality of first pixels in which a plurality of first pixels are arranged in a first direction are arranged in a second direction intersecting the first direction; A second pixel group in which a plurality of second pixel rows in which the second pixels are arranged along the first direction are arranged along the second direction, and each of the first pixel group and the second pixel group A selection circuit for selecting the first pixel column and the second pixel column to which the image signal is supplied from
The driving IC outputs a first output terminal that outputs the image signal to be supplied to the first pixel group, and a second output terminal that outputs an image signal to be supplied to the second pixel group at a position separated in the one direction. And two output terminals;
The plurality of output circuits output a precharge voltage supplied to the first pixel group and the second pixel group from the first wiring via the first output terminal and the second output terminal. Electro-optical device. The electro-optical device according to any one of claims 1 to 5,
The driving IC includes a first terminal connected to the first wiring, a second terminal separated from the first terminal in the other direction crossing the one direction with the first terminal, the first terminal and the first terminal. A third terminal separated from the two terminals in the one direction.
The wiring substrate includes a first electrode to which the first terminal is connected, a second electrode to which the second terminal is connected, a third electrode to which the third terminal is connected, and a first electrode through the first electrode. And a wiring for supplying power to the first wiring by
A first portion connecting the first terminal to the second terminal, a second portion extending in the one direction from the first portion, and extending from the second portion; And a third portion connected to the third terminal.
The electro-optical device according to claim 1, wherein the first reinforcing line extends from the second electrode to the third electrode. The electro-optical device according to claim 6,
The electro-optical device according to claim 1, wherein the first reinforcing line further extends from the first electrode to the second electrode. The electro-optical device according to any one of claims 1 to 5,
The driving IC has a first terminal connected to the first wiring, and a second terminal separated from the first terminal in the one direction,
The wiring board has a first electrode to which the first terminal is connected, a second electrode to which the second terminal is connected, and a wiring for supplying power to the first wiring via the first electrode. And
The first wiring extends from the first terminal to the second terminal;
The electro-optical device according to claim 1, wherein the first reinforcing line extends from the first electrode to the second electrode. The electro-optical device according to any one of claims 1 to 8,
The driving IC has a second wiring extending in the one direction,
The electro-optical device according to claim 1, wherein the wiring substrate has a second reinforcing wire electrically connected in parallel to the second wiring at a position overlapping the driving IC. The electro-optical device according to any one of claims 1 to 9,
The electro-optical device according to claim 1, wherein the wiring substrate is a single-layer substrate in which wiring is formed of the same metal layer. The electro-optical device according to any one of claims 1 to 10,
The electro-optical device according to claim 1, wherein the wiring board is a flexible wiring board. The electro-optical device according to any one of claims 1 to 11,
An electro-optical device, wherein a plurality of the wiring boards on which the driving ICs are mounted are connected to the optical panel.   An electronic apparatus comprising the electro-optical device according to any one of claims 1 to 12. A wiring board,
A driving IC mounted on one surface of the wiring board,
Has,
The driving IC has a first wiring extending in one direction,
The mounting structure according to claim 1, wherein the wiring board has a first reinforcing wire electrically connected to the first wiring in parallel at a position overlapping the driving IC. The mounting structure according to claim 14,
The driving IC has a second wiring extending in the one direction,
The electro-optical device according to claim 1, wherein the wiring substrate has a second reinforcing wire electrically connected in parallel to the second wiring at a position overlapping the driving IC.

Images