JP2013257589A - Electro-optic device and electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electro-optic device, such as a liquid crystal device, that achieves downsizing while keeping the area of an image display region.SOLUTION: An electro-optic device comprises a pair of first and second substrates bonded with each other. The first substrate comprises a projecting section projecting from the second substrate on a first side of the first substrate as viewed in a plane view. The first substrate comprises a plurality of pixel sections, a scanning line driving circuit, a data line driving circuit, a plurality of external circuit connection terminals and a plurality of lead-out wiring. The first substrate further comprises top and bottom conducting terminals, which are disposed on a side closer to a third side opposite to the first side of the first substrate than electric wiring for driving a data line and electric wiring for driving a scanning line while being connected to a counter electrode potential line, for supplying counter electrode potential. The second substrate comprises a counter electrode. Top and bottom conducting members, which electrically interconnect the top and bottom conducting terminals and the counter electrode, are disposed between the first and second substrates.

Description

  The present invention relates to a technical field of an electro-optical device such as a liquid crystal device and an electronic apparatus such as a liquid crystal projector including the electro-optical device.

  In this type of electro-optical device, for example, a plurality of pixel electrodes arranged in a matrix are provided on a TFT array substrate, and these arranged planar areas are used as image display areas. During the operation, an image signal, a scanning signal, and the like are supplied to an electronic element such as a pixel switching TFT via, for example, a data line, a scanning line, or the like. Then, matrix driving is performed by selectively supplying an image signal or the like from the electronic element to the pixel electrode. That is, image display is performed in an image display region in which a plurality of pixel electrodes are arranged in a matrix. The TFT array substrate configured as described above is bonded to a counter substrate through a predetermined gap, and an electro-optical material such as liquid crystal is sealed between these substrates. Among such regions on the TFT array substrate, in peripheral regions located around the image display region, there are drive circuit units such as a scanning line driving circuit for supplying scanning signals and a data line driving circuit for supplying image signals. Furthermore, a plurality of external circuit connection terminals, a plurality of lead wirings including image signal lines routed from these to the drive circuit unit, and vertical conduction terminals for electrical connection with the counter substrate Etc. are provided.

Japanese Patent Laid-Open No. 10-253990

  However, in the peripheral region, it is necessary to form the drive circuit unit, the external circuit connection terminal, and the lead wiring as described above in the extended region that protrudes from the counter substrate when viewed from the normal direction of the substrate. In the overhang area, it is also necessary to secure a margin area necessary for cutting from the mother substrate. In particular, a type of electro-optic that is supplied with a plurality of serial-parallel or phase-expanded image signals that are already widely used for the purpose of displaying high-definition images while avoiding an increase in drive frequency. In the apparatus, the number of external circuit connection terminals and the number of image signal lines for supplying the plurality of image signals are also increased. For example, electro-optical devices having a number of serial-parallel developments or phase developments of 24, 48, 96, etc., have been developed, and the overhanging area is reduced due to the presence of many external circuit connection terminals and many image signal lines. I have to be big. In addition, such an image signal line needs to be routed to a region closer to the image display region of the data line driving circuit through the side of the data line driving circuit. For this reason, if the number of serial-parallel developments is large, for example, a large number of image signal lines must pass near the corner of the TFT array substrate on which the vertical conduction terminals that are significantly larger than the wiring width are arranged. It falls into a situation that does not become. In addition, the scanning line driving circuit is provided along both sides or one side of the side where the data line driving circuit is provided. For this reason, the routing wiring that reaches the scanning line driving circuit must essentially pass through the vicinity of the corner of the TFT array substrate on which the upper and lower conductive terminals are arranged. As a result, the wiring layout has no significant margin in the vicinity of the two corners located on both sides of the data line driving circuit on the TFT array substrate. In other words, the wiring region swells in the vicinity of the two corners, making it difficult to reduce the size of the entire first substrate. A technique in which the TFT array substrate cannot be downsized while the area of the image display area remains unchanged, or the electro-optical device cannot be downsized due to the presence of an overhang area or a peripheral area that cannot be an image display area. There is a problem.

  The present invention has been made in view of the above-described problems, and provides an electro-optical device that can be miniaturized while maintaining the area of an image display region as it is, and various electronic apparatuses including such an electro-optical device. The task is to do.

  In order to solve the above problems, the electro-optical device of the present invention is formed by bonding a pair of first and second substrates, and the first substrate is more planar than the second substrate when viewed in plan on the first side. An electro-optical device having an overhanging portion, wherein the first substrate has a plurality of pixel portions arranged in an image display region and each having a pixel electrode, and a peripheral region located around the image display region A scanning line driving circuit for driving the pixel portion via a scanning line disposed along at least one second side adjacent to the first side of the first substrate in the peripheral region; A data line driving circuit disposed along the first side for driving the pixel portion via the data line; and in the region on the overhanging portion of the peripheral region along the first side Multiple external times arranged Connected to the connection terminal and the plurality of external circuit connection terminals to supply the data line driving wiring to the data line driving circuit, the scanning line driving wiring to the scanning line driving circuit, and the counter electrode potential A plurality of routing wirings including a counter electrode potential line, and the data line driving wiring and the scanning line driving wiring closer to the third side facing the first side of the first substrate than the wiring for driving the data line and the wiring for driving the scanning line The pixel electrode is disposed and connected to the counter electrode potential line, and includes a vertical conduction terminal for supplying the counter electrode potential, and the pixel electrode included in each of the plurality of pixel portions on the second substrate. A counter electrode formed so as to be opposed to each other in common is provided, and a vertical conductive material that electrically interconnects the vertical conductive terminal and the counter electrode is provided between the first and second substrates.

  According to the electro-optical device of the present invention, during the operation, the clock signal for operating the data line driving circuit from the external circuit via the external circuit connection terminal and the data line driving wiring among the drawing wirings. Various signals such as a power signal, a control signal, and an image signal are supplied to the data line driving circuit. In parallel with this, a clock signal, a power signal, a control signal, etc. for operating the scanning line driving circuit from the external circuit via the scanning line driving wiring among the external circuit connection terminal and the drawing wiring are provided. Various signals are supplied to the scanning line driving circuit. On the other hand, the counter electrode potential is supplied to the counter electrode through the counter electrode potential line of the routing wiring, and further through the vertical conductive terminal and the vertical conductive material. Accordingly, an image signal is supplied to the pixel portion via the data line by the data line driving circuit, and a scanning signal is supplied to the pixel portion via the scanning line by the scanning line driving circuit, for example, between the pixel electrode and the counter electrode. Active matrix driving is performed by driving an electro-optical material such as liquid crystal sandwiched between the pixel portions in each pixel portion. Note that, for example, a plurality of such scanning lines and data lines are wired on the substrate so as to cross each other. In addition, for example, such a pixel portion selectively supplies a pixel electrode and an image signal having a gate connected to the scanning line and supplied from the data line to the pixel electrode in accordance with the scanning signal supplied from the scanning line. And a pixel switching TFT.

  Particularly in the electro-optical device of the present invention, the vertical conduction terminals are arranged closer to the third side than the data line driving wiring and the scanning line driving wiring. The third side is a side opposite to the first side where the external circuit connection terminal and the data line driving circuit are arranged with the image display region interposed therebetween. For example, the vertical conduction terminals are arranged at two corners at both ends of the third side or one corner at one end on the first substrate. Therefore, when such vertical conduction terminals are provided on the first substrate at locations corresponding to the four corners of the second substrate, the vertical conduction terminals are not provided at the two corners on both ends of the first side. become. Therefore, as long as there are no vertical conduction terminals at the two corners at both ends of the first side, the routing wiring is provided near the two corners at both ends of the first side from the same conductive film as the counter electrode potential line or the vertical conduction terminal. It can be formed. Here, the size of the upper and lower conductive terminals can be several times or an order of magnitude larger than the thickness or wiring pitch of the routing wiring, so that a plurality or a considerable number of routing wirings can be connected to the first side. Wiring can be performed near the two corners at both ends. Therefore, any one or both of the scanning line driving wiring, the data line driving wiring, and the image signal line can be wired with sufficient margin near the two corners of both ends of the first side. In other words, the wiring area necessary for wiring these routing wirings is the vicinity of the two corners at both ends of the first side, that is, the two near the first side of the first side and the second side. It becomes possible to remarkably reduce the corner area. As a result, it is possible to reduce the overhang portion and to relatively shorten the first side of the first substrate. That is, the planar shape of the first and second substrates is made to be the same as each other with respect to the projecting portion where the external circuit connection terminals are arranged or the first side and the second side, that is, the size of the first substrate is relatively Can be made smaller.

  As a result, according to the electro-optical device of the present invention, it is possible to narrow the peripheral area of the electro-optical device with respect to the image display region, and the electro-optical device can be downsized without reducing the image display region. It becomes possible. In particular, in such a general-purpose manufacturing process in which a plurality of electro-optical devices are formed on a mother substrate, which is a plurality of first substrates, and then cut into individual electro-optical devices. More electro-optical devices can be formed in the area. When manufacturing the electro-optical device by arranging several, ten, or several dozen electro-optical devices on the same mother substrate, for example, even if the size of the first substrate can be slightly reduced to a few millimeters or several millimeters, the same mother It may be possible to form the electro-optical device on the substrate by only one column or a plurality of columns, or only one row or a plurality of rows. Therefore, even if the size of the first substrate can be made slightly smaller in this way, it can be said that it is extremely useful in practice and the effect is enormous.

  In one aspect of the electro-optical device according to the aspect of the invention, the vertical conduction terminal is provided in at least one of the two corners located at the end of the third side of the first substrate.

  With this configuration, the presence of the vertical conduction terminal provided at one or both of the two corners of the third side is not only the scanning line driving wiring, the data line driving wiring, and the image signal line, but also the data line. Also for the driving circuit and the scanning line driving circuit, there is no obstacle to the planar layout. In addition, since it is sufficient to route only one counter electrode potential line for each of the two sides or only one of the two sides, the counter electrode potential line leading to the vertical conduction terminal according to this aspect is routed. It is relatively easy to secure the wiring area.

  In another aspect of the electro-optical device according to the aspect of the invention, the counter electrode potential line includes a portion that is wired closer to the image display region than the scanning line driving circuit along the second side.

  According to this aspect, the counter electrode potential line can be wired closer to the image display area than the scanning line driving circuit for the portion along the second side, so that the scanning line driving circuit on the first substrate is formed. It is not necessary to unnecessarily widen the region outside the formed region only to route the counter electrode potential line. Further, it is possible to effectively prevent the counter electrode potential line from being disconnected during scribing or dicing.

  However, the counter electrode potential line has a portion wired along the second side on the side farther from the image display area than the scanning line driving circuit, that is, near the edge of the substrate related to the second side. Also good.

  In another aspect of the electro-optical device of the present invention, the scanning line driving circuit is provided in a region where the second substrate overlaps the first substrate as viewed in plan.

  According to this aspect, the first side of the first substrate can be further shortened, and the planar shapes of the first and second substrates are configured to have almost the same contour with respect to the second side. It becomes possible.

  In order to solve the above-described problems, an electronic apparatus according to the present invention includes the above-described electro-optical device according to the present invention (including various aspects thereof).

  Since the electronic apparatus according to the present invention includes the above-described electro-optical device according to the present invention, a video of a television, a mobile phone, an electronic notebook, a word processor, a viewfinder type or a monitor direct view type capable of displaying a high-quality image. Various electronic devices such as a tape recorder, a workstation, a videophone, a POS terminal, a touch panel, and an image forming apparatus such as a printer, a copy, and a facsimile using an electro-optical device as an exposure head can be realized. In addition, as the electronic apparatus of the present invention, for example, an electrophoretic device such as electronic paper, an electron emission device (Field Emission Display and Conduction Electron-Emitter Display), and the like can be realized.

  Such an operation and other advantages of the present invention will become apparent from the embodiments described below.

1 is a plan view showing an overall configuration of an electro-optical device according to a first embodiment of the invention. It is sectional drawing of H-H 'of FIG. It is a fragmentary top view which expands and shows the area | region shown by L12 of FIG. FIG. 3 is a circuit diagram illustrating an outline of a circuit configuration related to the data line driving circuit and the sampling circuit according to the first embodiment together with the lead wiring. It is a circuit diagram which shows the outline of the circuit structure concerning a counter electrode and pixel circuit to which a counter electrode electric potential is supplied from a vertical conduction terminal according to the first embodiment. It is a top view of the same meaning as FIG. 1 in the comparative example of 1st Embodiment. It is a fragmentary top view of the same meaning as FIG. 3 in the comparative example of 1st Embodiment. It is a fragmentary top view of the same meaning as FIG. 3 in 2nd Embodiment. It is a top view which shows the structure of the projector which is an example of the electronic device to which the electro-optical apparatus is applied. 1 is a perspective view showing a configuration of a personal computer as an example of an electronic apparatus to which an electro-optical device is applied. It is a perspective view which shows the structure of the mobile telephone which is an example of the electronic device to which the electro-optical apparatus is applied.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, a driving circuit built-in type TFT active matrix driving type liquid crystal device, which is an example of the electro-optical device of the present invention, is taken as an example.

(First embodiment)
The electro-optical device according to the first embodiment will be described with reference to FIGS.

  First, the overall configuration of the electro-optical device according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a plan view showing the configuration of the electro-optical device according to this embodiment, and FIG. 2 is a cross-sectional view taken along the line H-H ′ in FIG. 1.

  1 and 2, in the electro-optical device according to the present embodiment, a TFT array substrate 10 and a counter substrate 20 are disposed to face each other. A liquid crystal layer 50 is sealed between the TFT array substrate 10 and the counter substrate 20, and the TFT array substrate 10 and the counter substrate 20 are provided with a sealing material provided in a seal region 52a located around the image display region 10a. 52 are bonded to each other.

  In FIG. 1, a light-shielding frame light-shielding film 53 that defines the frame area of the image display region 10 a is provided on the counter substrate 20 side in parallel with the inside of the seal region 52 a where the sealing material 52 is disposed. In the peripheral region, the data line driving circuit 101 and the external circuit connection terminal 102 are provided along the first side of the TFT array substrate 10 in a region located outside the sealing region where the sealing material 52 is disposed. . The sampling circuit 301 is provided so as to be covered with the frame light-shielding film 53 on the inner side of the seal region 52 a along the first side. The scanning line driving circuit 104 is provided so as to be covered with the frame light-shielding film 53 inside the seal region 52a along the second side adjacent to the first side. Further, in order to connect the two scanning line driving circuits 104 provided on both sides of the image display area 10a in this way, the TFT array substrate 10 is covered with the frame light shielding film 53 along the remaining side. A plurality of wirings 105 are provided. Further, on the TFT array substrate 10, vertical conduction terminals 106 for connecting the two substrates with the vertical conduction material 107 are arranged at two corners of both ends of the third side facing the first side of the counter substrate 20. ing. Thus, electrical conduction can be established between the TFT array substrate 10 and the counter substrate 20.

  In FIG. 2, on the TFT array substrate 10, a laminated structure in which wiring such as a TFT (thin film transistor) for pixel switching which is a driving element, a scanning line, and a data line is formed is formed. In the image display area 10a, a pixel electrode 9a is provided in an upper layer of wiring such as a pixel switching TFT, a scanning line, and a data line. On the other hand, a light shielding film 23 is formed on the surface of the counter substrate 20 facing the TFT array substrate 10. A counter electrode 21 made of a transparent material such as ITO is formed on the light shielding film 23 so as to face the plurality of pixel electrodes 9a.

  Next, with reference to FIG. 3 to FIG. 5, the details of the planar layout of the routing wiring routed from the external circuit connection terminal will be described. FIG. 3 is an enlarged partial plan view showing the circular region L12 of FIG. FIG. 4 is a circuit diagram showing an outline of the circuit configuration relating to the data line driving circuit and the sampling circuit together with the routing wiring. FIG. 5 is a circuit diagram showing an outline of a circuit configuration related to the counter electrode to which the counter electrode potential is supplied from the vertical conduction terminal and the pixel circuit.

  As shown in FIG. 3, in particular, in the present embodiment, the TFT array substrate 10 has an overhanging portion 10e overhanging from the counter substrate 20 in plan view on the first side (lower side in FIG. 3). A plurality of external circuit connection terminals 102 are provided in the region on the overhanging portion 10e along the first side. A plurality of external circuit connection terminals 102 are connected to an image signal terminal 102a for supplying an image signal, a scanning line driving circuit 104, a clock signal, an inverted clock signal, a start pulse signal, a scanning direction control signal, a power supply signal, and the like. It includes a scanning line driver circuit terminal 102b for supplying various signals such as a special control signal, and a counter electrode potential terminal 102c for supplying a counter electrode potential or a common potential to the vertical conduction terminal 106. The plurality of external circuit connection terminals 102 are connected to the data line driving circuit 101 in addition to various signals such as a clock signal, an inverted clock signal, a start pulse signal, a scanning direction control signal, a power supply signal, and other special control signals. Including a data line drive circuit terminal (not shown), an inspection terminal, and the like.

  The scanning line driving circuit 104 is arranged along the second side (the left side in FIG. 3), and the scanning line driving circuit lead-out wiring 118 is connected to the scanning line driving circuit 104 from the scanning line driving circuit terminal 102b. Has been routed to.

  From the counter electrode terminal 102c, the counter electrode lead wire 71 is routed along the second side to the vertical conduction terminal 106 (see FIG. 1).

  The data line driving circuit 101 is arranged along the first side, and a data line driving circuit lead-out wiring is routed from a data line driving circuit terminal (not shown) to the data line driving circuit 101.

  An image signal line 115 is routed around the data line driving circuit 101 from the image signal terminal 102a. A branch wiring 116 is wired from the image signal line 115 to the sampling circuit 301. On the other hand, a sampling circuit drive signal line 117 is wired from the data line drive circuit 101 to the sampling circuit 301.

  The circuit configuration related to the data line driving circuit 101 and the sampling circuit 301, and the electrical connection relationship using the lead wirings are as shown in FIG.

  That is, as shown in FIG. 4, the branch wiring 116 from the image signal line 115 is connected to the source of the sampling switch 302 composed of a TFT or the like constituting the sampling circuit 301, and the sampling circuit driving from the data line driving circuit 101 is performed. The signal line 117 is connected to the gate of the sampling switch 302. Therefore, during operation of the electro-optical device, an image signal applied from the external circuit to the image signal terminal 102 a is supplied to the sampling circuit 301 via the branch wiring 116 from the image signal line 115. Here, the image signals supplied to the sampling circuit 301 are parallel or parallel for each set with respect to the set of six data lines 6a as the image signals VID1 to VID6 which are serially and parallelly expanded into six phases. It is supplied to the sampling circuit 301. Then, the image signal is sampled at a timing according to the sampling circuit driving signal supplied from the data line driving circuit 101 via the sampling circuit driving signal line 117 and based on the shift register output. At this time, since the image signals VID1 to VID6 are image signals that are serial-parallel-developed into six phases, the data line driving circuit 101 branches the sampling circuit driving signals into six at the final stage, respectively. , And simultaneously supplied to a set of six sampling switches 302 corresponding to a set of six data lines 6a. The image signal sampled simultaneously for each set of six data lines 6a is supplied to each data line 6a.

  Further, during such an operation, the counter electrode potential LCCOM applied from the external circuit to the counter electrode terminal 102 c is supplied to the counter electrode 21 via the counter electrode lead wiring 71 and the vertical conduction terminal 106. It will be.

As shown in FIG. 5, the counter electrode 21 to which the counter electrode potential LCCOM is supplied as described above is disposed so as to face the pixel electrode 9a with the liquid crystal layer 50 interposed therebetween, thereby constructing a liquid crystal capacitor 50a. Here, in each pixel portion, the data line 6a to which the image signal is supplied as described above has the pixel switching TFT 30 connected to the source thereof. A scanning line 3a to which a scanning signal is supplied from the scanning line driving circuit 104 (see FIGS. 1 to 3) is connected to the gate of the TFT 30. Accordingly, the TFT 30 is turned on at the timing when the scanning signal is supplied via the scanning line 3a, so that an image signal is written to the pixel electrode 9a via the data line 6a and the source / drain of the TFT 30. Become. Note that a storage capacitor 70 is constructed in parallel with the liquid crystal capacitor 50a in order to enhance the potential holding characteristic of the liquid crystal capacitor 50a.
In such a storage capacitor 70, a part of the capacitor line 300 for supplying a predetermined potential or a fixed potential side capacitor electrode connected thereto and a pixel potential side capacitor electrode connected to the pixel electrode 9a form a dielectric film. It is constructed by being arranged opposite to each other.

  Since the electro-optical device according to this embodiment is configured as described above, a scanning signal is supplied to the pixel unit via the scanning line 3 a by the scanning line driving circuit 104 during operation, and the data line driving circuit 101 supplies the scanning signal. An image signal is supplied to the pixel portion via the data line 6a, and active matrix driving is performed in each pixel portion.

  In FIG. 1 again, particularly in the present embodiment, the vertical conduction terminal 106 is disposed on the side close to the third side. The third side is a side facing the first side where the external circuit connection terminal 102 and the data line driving circuit 101 are arranged with the image display region 10a interposed therebetween. The vertical conduction terminals 106 are arranged at two corners on both ends of the third side on the TFT array substrate 10.

Here, by comparing with the comparative example according to the present embodiment shown in FIG. 6 and FIG. 7, the operational effects of the present embodiment configured as described above will be examined. FIG. 6 is a plan view having the same concept as FIG. 1 in the comparative example of the present embodiment. FIG. 7 is a partial plan view having the same concept as in FIG. 3 in the comparative example of the present embodiment.
In the comparative example shown in FIGS. 6 and 7, the vertical conduction terminals 106 are provided at locations corresponding to the four corners of the counter substrate 20 on the TFT array substrate 10. About another structure, it is substantially the same as embodiment shown in FIG.1 and FIG.3. For this reason, in the comparative example, from the same conductive film as the counter electrode potential line 71 or the upper and lower conductive terminals 106, the upper and lower conductive terminals 106 exist at the two corners at both ends of the first side. The routing wiring cannot be formed near the two corners.

  In the liquid crystal device according to the present embodiment shown in FIGS. 1 and 3, compared with the comparative example of FIGS. 6 and 7, the counter electrode potential is the same as the upper and lower conductive terminals 106 do not exist at the two corners at both ends of the first side. From the same conductive film as the line 71 or the upper and lower conductive terminals 106, the routing wiring can be formed near the two corners at both ends of the first side. Here, the size of the vertical conduction terminal 106 can be several times or an order of magnitude larger than the thickness or wiring pitch of the routing wiring, so that a plurality or a considerable number of routing wirings can be connected to the first side. Wiring can be performed in the vicinity of the two corners of both ends. Therefore, any one or both of the scanning line driving wiring 118, the data line driving wiring, and the image signal line 115 can be wired with sufficient margin near the two corners of both ends of the first side. Become. In other words, the wiring area necessary for wiring these routing wirings can be significantly reduced in the vicinity of the two corners at both ends of the first side. As a result, the overhanging portion 10e can be reduced, and the first side of the TFT array substrate 10 can be relatively shortened. That is, the planar shape of the TFT array substrate 10 and the counter substrate 20 is made to be close to each other with respect to the overhanging portion 10e or the first side where the external circuit connection terminals 102 are arranged, and the second side. The size of 10 can be made relatively small.

  As a result, according to the present embodiment, the peripheral area of the liquid crystal device can be narrowed with respect to the image display area 10a, and the liquid crystal apparatus can be miniaturized without narrowing the image display area 10a. . In particular, with such a configuration, in a general-purpose manufacturing process in which a plurality of liquid crystal devices are formed on a mother substrate to be a plurality of TFT array substrates 10 and then cut into individual electro-optical devices, the same More liquid crystal devices can be formed within the area. When manufacturing the liquid crystal device by arranging several, ten, or several tens of liquid crystal devices on the same mother substrate, for example, even if the size of the TFT array substrate 10 can be slightly reduced to a few millimeters or several millimeters, the same mother It may be possible to form the liquid crystal device on the substrate by only one column or a plurality of columns, or by only one row or a plurality of rows. Therefore, even if the size of the TFT array substrate 10 can be made slightly smaller in this way, it can be said that it is extremely useful in practice and the effect is enormous.

  In FIG. 1, particularly in the present embodiment, the vertical conduction terminals 106 are provided at both corners of the third side of the TFT array substrate 10.

  For this reason, the presence of the vertical conduction terminals 106 provided at both corners of the third side is not only the scanning line driving wiring 118, the data line driving wiring, and the image signal line 115 but also the data line driving circuit 101. Also, the scanning line driving circuit 104 does not interfere with the planar layout. In addition, since it is sufficient to route only one counter electrode potential line 71 for each of the two sides, a wiring area for routing the counter electrode potential line 71 reaching the vertical conduction terminal 106 according to the present embodiment is secured. It is relatively easy. Note that the vertical conduction terminal 106 may be provided only at one of the two corners located at the end of the third side of the TFT array substrate 10. In this case as well, there is no hindrance in the planar layout, and it is sufficient to draw only one counter electrode potential line 71 for one of the two sides.

  In FIG. 3, in the present embodiment, the scanning line driving circuit 104 is further provided in a region on the TFT array substrate 10 where the counter substrate 20 overlaps when viewed in plan. Therefore, compared with the comparative example shown in FIG. 6, the first side of the TFT array substrate 10 can be shortened by ΔW, and the planar shape of the TFT array substrate 10 and the counter substrate 20 is changed to the second side (in FIG. 3). , The left side) can be configured to have almost the same contour.

(Second Embodiment)
Next, a liquid crystal device according to a second embodiment will be described with reference to FIG. FIG. 8 is a plan view having the same concept as in FIG. 3 in the second embodiment. In FIG. 8, the same components as those in the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  In FIG. 8, particularly in the present embodiment, the counter electrode potential line 71 is wired closer to the image display region 10a than the scanning line driving circuit 104 in the portion along the second side. For this reason, the region outside the region where the scanning line driving circuit 104 is formed on the TFT array substrate 10 does not need to be unnecessarily widened only for routing the counter electrode potential line 71. Further, it is possible to effectively prevent the counter electrode potential line 71 from being disconnected during scribing or dicing.

  However, the counter electrode potential line 71 may have a portion wired on the side farther from the image display area 10a than the scanning line driving circuit 104 along the second side.

(Electronics)
Next, the case where the liquid crystal device which is the above-described electro-optical device is applied to various electronic devices will be described.

  First, a projector using this liquid crystal device as a light valve will be described. FIG. 9 is a plan view showing a configuration example of the projector. As shown in FIG. 9, a projector 1100 includes a lamp unit 1102 made up of a white light source such as a halogen lamp. The projection light emitted from the lamp unit 1102 is separated into three primary colors of RGB by four mirrors 1106 and two dichroic mirrors 1108 arranged in the light guide 1104, and serves as a light valve corresponding to each primary color. The light enters the liquid crystal panels 1110R, 1110B, and 1110G.

  The configurations of the liquid crystal panels 1110R, 1110B, and 1110G are the same as those of the liquid crystal device described above, and are driven by R, G, and B primary color signals supplied from the image signal processing circuit. The light modulated by these liquid crystal panels enters the dichroic prism 1112 from three directions. In this dichroic prism 1112, R and B light is refracted at 90 degrees, while G light travels straight. Accordingly, as a result of the synthesis of the images of the respective colors, a color image is projected onto the screen or the like via the projection lens 1114.

  Here, paying attention to the display images by the liquid crystal panels 1110R, 1110B, and 1110G, the display image by the liquid crystal panel 1110G needs to be horizontally reversed with respect to the display images by the liquid crystal panels 1110R, 1110B.

  Note that since light corresponding to the primary colors R, G, and B is incident on the liquid crystal panels 1110R, 1110B, and 1110G by the dichroic mirror 1108, it is not necessary to provide a color filter.

  Next, an example in which the liquid crystal device is applied to a mobile personal computer will be described. FIG. 10 is a perspective view showing the configuration of this personal computer. In FIG. 10, the computer 1200 includes a main body 1204 provided with a keyboard 1202 and a liquid crystal display unit 1206. The liquid crystal display unit 1206 is configured by adding a backlight to the back surface of the liquid crystal device 1005 described above.

  Further, an example in which the liquid crystal device is applied to a mobile phone will be described. FIG. 11 is a perspective view showing the configuration of this mobile phone. In FIG. 11, a mobile phone 1300 includes a reflective liquid crystal device 1005 together with a plurality of operation buttons 1302. In the reflective liquid crystal device 1005, a front light is provided on the front surface thereof as necessary.

  In addition to the electronic devices described with reference to FIGS. 9 to 11, a liquid crystal television, a viewfinder type, a monitor direct view type video tape recorder, a car navigation device, a pager, an electronic notebook, a calculator, a word processor, a work Examples include a station, a videophone, a POS terminal, a device equipped with a touch panel, and the like. Needless to say, the present invention can be applied to these various electronic devices.

  In addition to the liquid crystal device described in the above embodiment, the present invention also includes a reflective liquid crystal device (LCOS) in which elements are formed on a silicon substrate, a plasma display (PDP), a field emission display (FED, SED), It can also be applied to an organic EL display or the like.

  The present invention is not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit or concept of the invention that can be read from the claims and the entire specification. An electronic apparatus including the electro-optical device is also included in the technical scope of the present invention.

  9a ... pixel electrode, 3a ... scanning line, 6a ... data line, 10 ... TFT array substrate, 10a ... image display area, 10e ... overhang, 20 ... counter substrate, 21 ... counter electrode, 23 ... light shielding film, 50 ... Liquid crystal layer 52 ... Sealing material 52a ... Sealing region 53 ... Frame light shielding film 71 ... Leading wiring for counter electrode, 101 ... Data line driving circuit, 102, 102a, 102b, 102c ... External circuit connection terminal, 104 ... Scanning line drive circuit, 106: vertical conduction terminal, 107: vertical conduction material, 115: image signal line, 116: branch wiring, 117: sampling circuit drive signal line, 118: wiring for scanning line drive circuit, 301: sampling circuit, 302 ... Sampling switch, LCCOM ... Counter electrode potential, VID1 to VID6 ... Image signal.

The electro-optical device according to one embodiment of the present invention includes a first side, a second side that intersects the first side, a third side that faces the first side, and a fourth side that faces the second side. A first substrate having a first substrate, a second substrate disposed to face the first substrate, and the first substrate and the second substrate. A sealing material disposed along a side, a third side, and the fourth side; a counter electrode disposed between the first substrate and the second substrate; and the counter electrode and the first substrate. A plurality of pixel electrodes disposed between the scanning electrode and a scanning line driving circuit disposed between the second side and the plurality of pixel electrodes when the first substrate side is viewed from the second substrate side. And when the first substrate side is viewed from the second substrate side, a plurality of connection terminals arranged along the first side, and the plurality of connection terminals Scanning line driving circuit wiring for electrically connecting the first connection terminal to the scanning line driving circuit, and when the first substrate side is viewed from the second substrate side, the scanning line The driving circuit is disposed between the sealing material and the plurality of pixel electrodes, and when the first substrate side is viewed from the second substrate side, the scanning line driving circuit wiring is the sealing material. It intersects with the edge of the portion along the first side.
In the electro-optical device according to the present invention, a pair of first and second substrates are bonded to each other, and the first substrate protrudes from the second substrate when viewed in plan on the first side. In the electro-optical device, the first substrate includes a plurality of pixel units arranged in an image display region and each having a pixel electrode, and a peripheral region positioned around the image display region. A scanning line driving circuit that is disposed along at least one second side adjacent to the first side of the substrate and drives the pixel portion via a scanning line; and A plurality of data line driving circuits arranged along the first side in a region on the overhanging portion of the peripheral region, and a data line driving circuit for driving the pixel unit via the data line External circuit connection terminals of A plurality of external circuit connection terminals are routed from a plurality of external circuit connection terminals, a data line driving wiring reaching the data line driving circuit, a scanning line driving wiring reaching the scanning line driving circuit, and a counter for supplying a counter electrode potential A plurality of lead wirings including electrode potential lines, and the data line driving wirings and the scanning line driving wirings are arranged closer to the third side facing the first side of the first substrate. And a vertical conduction terminal for supplying the counter electrode potential, and commonly facing the pixel electrode of each of the plurality of pixel portions on the second substrate. And a vertical conduction member that electrically interconnects the vertical conduction terminal and the counter electrode between the first and second substrates.

Claims (5)

A pair of first and second substrates are bonded together, and the first substrate is an electro-optical device having a projecting portion that projects from the second substrate when viewed in plan on its first side,
A plurality of pixel portions arranged in the image display area and each having a pixel electrode on the first substrate; and at least adjacent to the first side of the first substrate in a peripheral area located around the image display area. A scanning line driving circuit disposed along one second side for driving the pixel unit via the scanning line; and a peripheral line disposed along the first side in the peripheral region via the data line. A data line driving circuit for driving the pixel portion, a plurality of external circuit connection terminals arranged along the first side in a region of the peripheral region on the overhanging portion, A data line driving wiring leading to the data line driving circuit, a scanning line driving wiring leading to the scanning line driving circuit, and a counter electrode potential line for supplying a counter electrode potential. Including A plurality of lead wirings, the data line driving wirings, and the scanning line driving wirings are arranged closer to the third side facing the first side of the first substrate and the counter electrode potential A vertical conduction terminal connected to a line, for supplying the counter electrode potential,
A counter electrode formed on the second substrate so as to be opposed to the pixel electrode of each of the plurality of pixel portions;
An electro-optical device, comprising: a vertical conduction member that electrically interconnects the vertical conduction terminal and the counter electrode between the first and second substrates.   2. The electro-optical device according to claim 1, wherein the vertical conduction terminal is provided at at least one of two corners positioned at an end of the third side of the first substrate.   3. The electricity according to claim 1, wherein the counter electrode potential line has a portion wired along the second side closer to the image display area than the scanning line driving circuit. 4. Optical device.   4. The electric circuit according to claim 1, wherein the scanning line driving circuit is provided in a region where the second substrate overlaps when viewed in plan on the first substrate. 5. Optical device.   An electronic apparatus comprising the electro-optical device according to claim 1.

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