JP2010266783A - Liquid crystal device and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal device capable of supplying power to a first substrate and a second substrate with a small amount of members even when an inter-substrate conduction material is not used, and to provide an electronic apparatus with the liquid crystal device. <P>SOLUTION: In the liquid crystal device 100, power is supplied to a common electrode formed on the second substrate 20, by connecting a second electrode 73c of a flexible wiring board 70, to a second substrate side terminal 23 provided on the second substrate 20. As the flexible wiring board 70 connected to the second substrate 20 is also connected to the first substrate 10, power supply to the first substrate 10 and the second substrate 20 is performed by one flexible wiring board 70. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a liquid crystal device and an electronic apparatus including the liquid crystal device.

  The liquid crystal device has a structure in which a liquid crystal layer is held between a first substrate provided with a pixel electrode, a scanning line, and a data line and a second substrate provided with a common electrode. The liquid crystal is driven by an electric field applied between the common electrode. In such a liquid crystal device, a flexible wiring board is connected to an end portion of an element substrate, and various signals and constant potentials are supplied to the element substrate through the flexible wiring board. Further, an inter-substrate conductive material is provided between the first substrate and the second substrate, and a common potential is applied to the common electrode of the second substrate via the inter-substrate conductive material (see Patent Document 1).

  The inter-substrate conductive material is made of a conductive material containing conductive particles in a resin, and includes an electrode provided on the first substrate and an electrode provided on the second substrate on the outer peripheral side of the pixel region where the pixel electrodes are arranged. Intervene in between.

JP 2003-248237 A

  However, when the inter-substrate conductive material is used, it is necessary to apply and cure the conductive material. Further, the inter-substrate conductive material is electrically conductive between the first substrate side electrode and the second substrate side electrode after applying a conductive material to the first substrate side electrode side or the second substrate side electrode. Since the first substrate and the second substrate are bonded so as to sandwich the material and then cured, the reliability in terms of electrical connection is low. Therefore, when the inter-substrate conductive material is used, it is necessary to provide electrodes having a somewhat large area in a plurality of locations on the first substrate and the second substrate in a region (peripheral region) outside the pixel region. For this reason, in the liquid crystal device, when trying to narrow a peripheral region that does not directly contribute to the display of an image, there is a problem in that the conduction portion by the inter-substrate conduction material is an obstacle. However, if a structure in which another flexible wiring board is connected to the second board is adopted, the number of parts increases, resulting in an increase in cost.

  In view of the above problems, an object of the present invention is to provide a liquid crystal device capable of supplying power to the first substrate and the second substrate with a small number of members without using an inter-substrate conductive material, and the liquid crystal device. To provide electronic equipment.

  In order to solve the above problems, the present invention provides a first substrate having a pixel electrode, a scanning line, and a data line on one substrate surface, and a substrate surface facing the one substrate surface of the first substrate. A liquid crystal device comprising: a second substrate provided with a common electrode; a liquid crystal layer held between the first substrate and the second substrate; and a wiring substrate connected to at least the first substrate. The first substrate side terminal is provided in the first substrate side projecting region projecting from the end of the second substrate on the substrate surface of the first substrate, and the substrate surface of the second substrate has A second substrate side terminal that is electrically connected to the common electrode is provided in a second substrate side projecting region that projects from an end portion of the first substrate, and the wiring substrate overlaps the first substrate side projecting region. A first electrode connected to the first substrate side terminal, Characterized in that it comprises a serial second second electrode connected to the second board-side terminal to the second connection region overlapping the substrate side projecting region.

  In the present invention, power is supplied to the common electrode formed on the second substrate by connecting the second electrode of the wiring substrate to the second substrate side terminal provided on the second substrate. For this reason, since it is not necessary to employ | adopt the structure which interposes a board | substrate conduction | electrical_connection material between a 1st board | substrate and a 2nd board | substrate, and supplies electric power to a common electrode with the said board | substrate conduction | electrical_connection material, reliability can be improved. . In addition, a process that requires a lot of labor such as application and curing of a conductive material is unnecessary. In addition, since it is not necessary to provide a plurality of electrodes for inter-substrate conduction in a region (peripheral region) outside the pixel region of the first substrate, the peripheral region that does not directly contribute to image display can be narrowed. Furthermore, since the wiring substrate connected to the second substrate is also connected to the first substrate, power can be supplied to the first substrate and the second substrate with one wiring substrate. Therefore, the number of parts can be reduced.

  In the present invention, on the substrate surface of the first substrate, a scanning line driving circuit that outputs a scanning signal to the scanning line outside the pixel region in which the pixel electrodes are arranged, and a data signal to the data line A data line driving circuit for outputting is provided, the terminal on the first substrate side is a scanning line driving circuit terminal electrically connected to the scanning line driving circuit, and the data electrically connected to the data line driving circuit. A configuration including a line drive circuit terminal can be employed.

  In the present invention, it is preferable that the wiring board overlaps at least a part of the scanning line driving circuit and the data line driving circuit in plan view. According to such a configuration, the wiring board can block light and electromagnetic noise that try to enter the scanning line driving circuit and the data line driving circuit. Therefore, in the scanning line driving circuit and the data line driving circuit, It is possible to suppress a malfunction caused by incidence.

  In the present invention, the wiring board is preferably a double-sided board having the first electrode on one side and the second electrode on the other side. According to this configuration, the first substrate-side terminal provided on the surface side of the first substrate facing the second substrate, and the second substrate-side terminal provided on the surface side of the second substrate facing the first substrate. The wiring board can be easily connected to the above.

  In this invention, the said wiring board is a 1st bending part which bends the side of the said 2nd connection area | region diagonally to the side in which the said 1st board | substrate is located between the said 1st connection area | region and the said 2nd connection area | region. And a second bent portion that bends a portion located closer to the second connection region than the first bent portion so as to be parallel to the first substrate. According to this configuration, the first substrate-side terminal provided on the surface side of the first substrate facing the second substrate, and the second substrate-side terminal provided on the surface side of the second substrate facing the first substrate. In the state where the wiring board is connected to the wiring board, the wiring board is hardly bent. Accordingly, since the shape restoring force due to the bending is unlikely to be generated in the wiring board, it is possible to suppress the first board and the second board from receiving stress from the wiring board.

  In the present invention, it is preferable that the first board side terminals are arranged along a plurality of sides of the first board. According to such a configuration, even when the number of first substrate side terminals is large, it is not necessary to unnecessarily increase the length of the side of the first substrate.

  In the present invention, for example, a configuration in which the first substrate side terminals are arranged along two adjacent sides in the first substrate can be employed.

  In this case, in the wiring substrate, the wiring extending from the first electrode provided on one side of the two sides of the first substrate and the first electrode provided on the other side are provided. It is possible to adopt a configuration in which the extending wirings are obliquely extended toward the directions approaching each other. According to this configuration, in the wiring board, the difference between the length of the wiring extending from the position overlapping one of the two sides of the first board and the length of the wiring extending from the position overlapping the other side. And the length of each wiring can be shortened. For this reason, it is possible to suppress the deterioration of the signal waveform caused by the wiring resistance.

  In the present invention, the first substrate side terminals may be arranged along two opposite sides of the first substrate. According to such a configuration, a signal and a constant potential can be supplied to the first substrate from two opposite sides of the first substrate.

  In this invention, it is preferable that the said wiring board has overlapped with the outer peripheral side edge part of the pixel area | region where the said pixel was arranged in multiple numbers by planar view. According to such a configuration, even when the alignment of the liquid crystal is disturbed at the outer peripheral side end of the pixel region, since the region is covered with the wiring board, it is possible to prevent the disorder of the image from being visually recognized.

  In the present invention, it is preferable that the second substrate side terminal is a portion extending from the common electrode, and the film thickness of the second substrate side terminal is smaller than the film thickness of the common electrode. According to this configuration, the first substrate-side terminal provided on the surface side of the first substrate facing the second substrate, and the second substrate-side terminal provided on the surface side of the second substrate facing the first substrate. In the state where the wiring board is connected to the wiring board, the wiring board is hardly bent.

  A liquid crystal device to which the present invention is applied can be used as an electronic device such as a mobile phone or a mobile computer. The liquid crystal device to which the present invention is applied can also be used in a projection display device as an electronic apparatus. The projection display device has a light source unit that supplies light to the liquid crystal device, and light emitted by the liquid crystal device. A projection optical system that projects the modulated light.

1 is a block diagram showing an electrical configuration of a liquid crystal device according to Embodiment 1 of the present invention. (A), (b) is the top view which looked at the liquid crystal panel of the liquid crystal device based on Embodiment 1 of this invention from the opposing board | substrate side with each component, respectively, and its HH 'sectional drawing. It is a perspective view which shows a mode that the flexible wiring board was connected to the liquid crystal panel in the liquid crystal device which concerns on Embodiment 1 of this invention. (A), (b), (c), (d) is a plan view showing a state in which a flexible wiring board is connected to the liquid crystal panel in the liquid crystal device according to Embodiment 1 of the present invention, as viewed from the arrow A, It is explanatory drawing which shows the reason for providing a bending part in B arrow view and a flexible wiring board. It is a perspective view which shows a mode that the flexible wiring board was connected to the liquid crystal panel in the liquid crystal device which concerns on Embodiment 2 of this invention. It is explanatory drawing which shows the layout of the electrical component of the 1st board | substrate of the liquid crystal device which concerns on Embodiment 3 of this invention. (A), (b), (c), (d) is a perspective view, a plan view, and an arrow C showing how a flexible wiring board is connected to the liquid crystal panel in the liquid crystal device according to Embodiment 3 of the present invention. FIG. It is explanatory drawing which shows the layout of the electrical component of the 1st board | substrate of the liquid crystal device which concerns on Embodiment 4 of this invention. (A), (b), (c) is the perspective view, top view, and arrow D figure which show a mode that the flexible wiring board was connected to the liquid crystal panel in the liquid crystal device which concerns on Embodiment 4 of this invention. It is explanatory drawing which shows the structure of the liquid crystal device which concerns on another embodiment of this invention. It is explanatory drawing which shows the structure of the liquid crystal device which concerns on another embodiment of this invention. It is explanatory drawing of the electronic device using the liquid crystal device to which this invention is applied.

  Embodiments of the present invention will be described with reference to the drawings. In the drawings to be referred to in the following description, the scales are different for each layer and each member so that each layer and each member have a size that can be recognized on the drawing.

[Embodiment 1]
(Basic configuration of liquid crystal device)
FIG. 1 is a block diagram showing an electrical configuration of the liquid crystal device according to Embodiment 1 of the present invention. 2A and 2B are a plan view of the liquid crystal panel of the liquid crystal device according to the first embodiment of the present invention as viewed from the side of the counter substrate together with each component, and a cross-sectional view thereof taken along line HH ′. is there.

  As shown in FIG. 1, the liquid crystal device 100 includes a liquid crystal panel 100p in a TN (Twisted Nematic) mode or a VA (Vertical Alignment) mode, and the liquid crystal panel 100p has a plurality of pixels 100a in a matrix area in a matrix. The pixel regions 110 are arranged in a shape. In the liquid crystal panel 100p, on the first substrate 10 described later, a plurality of scanning lines 3a and a plurality of data lines 6a extend vertically and horizontally inside the pixel region 110, and an intersection of the scanning lines 3a and the data lines 6a. A pixel 100a is configured at a position corresponding to. In each of the plurality of pixels 100a, a pixel transistor 30 made of a field effect transistor and a pixel electrode 9a described later are formed. The data line 6 a is electrically connected to the source of the pixel transistor 30, the scanning line 3 a is electrically connected to the gate of the pixel transistor 30, and the pixel electrode 9 a is electrically connected to the drain of the pixel transistor 30. Has been. In the pixel region 110, the pixel 100 a located at the outer peripheral side end may be configured as a dummy pixel that does not directly contribute to display. In this case, the region excluding the dummy pixel in the pixel region 110. Is used as the image display area 120.

  In the first substrate 10, a scanning line driving circuit 104 and a data line driving circuit 101 are configured in the outer region of the pixel region 110. The data line driving circuit 101 is electrically connected to each data line 6a via the data holding circuit 102, and sequentially supplies the image signal supplied from the image processing circuit to each data line 6a. The scanning line driving circuit 104 is electrically connected to each scanning line 3a, and sequentially supplies a scanning signal to each scanning line 3a. In this embodiment, the scanning line driving circuit 104 is provided on one side in the extending direction of the scanning line 3a. The scanning line driving circuit 104 and the data line driving circuit 101 are configured by, for example, driving transistors formed simultaneously with the pixel transistors 30.

  In each pixel 100a, the pixel electrode 9a faces a common electrode formed on a second substrate, which will be described later, via a liquid crystal, and constitutes a liquid crystal capacitor 50a. In addition, a holding capacitor 60 is added to each pixel 100a in parallel with the liquid crystal capacitor 50a in order to prevent fluctuation of an image signal held in the liquid crystal capacitor 50a. In this embodiment, in order to configure the storage capacitor 60, the capacitor line 3b extending in parallel with the scanning line 3a is formed across the plurality of pixels 100a.

  As shown in FIGS. 2A and 2B, the liquid crystal panel 100p of the liquid crystal device 100 includes a sealing material between the first substrate 10 (element substrate) and the second substrate 20 (counter substrate) through a predetermined gap. The liquid crystal layer 50 is held between the first substrate 10 and the second substrate 20 in a region surrounded by the sealant 107. The sealing material 107 is an adhesive made of a photo-curing resin, a thermosetting resin, or the like, and is mixed with a gap material such as glass fiber or glass beads for setting the distance between both substrates to a predetermined value.

  In the first substrate 10, pixel electrodes 9a are formed in a matrix on one substrate surface 10x. In the second substrate 20, a common electrode 21 is formed on the substrate surface 20 x facing the first substrate 10. The common electrode 21 is formed integrally or in a stripe shape on the entire surface of the pixel region 110 on the substrate surface 20x of the second substrate 20, and faces the plurality of pixel electrodes 9a. On the second substrate 20, a frame 108 made of a light shielding material is formed in an inner region of the sealing material 107, and an inner side thereof is an image display region 120.

  When the liquid crystal device 100 having such a configuration is configured as a transmissive liquid crystal device, light emitted from a backlight device (not shown) enters from the first substrate 10 side and exits from the second substrate 20 side. In the meantime, the light is modulated by the liquid crystal layer 50 and emitted. In addition, light emitted from the backlight device may be light-modulated by the liquid crystal layer 50 while being emitted from the second substrate 20 and emitted from the first substrate 10. In any case, in the transmissive liquid crystal device 100, a transparent substrate such as glass or a quartz substrate is used for the substrate body 10d of the first substrate 10 and the substrate body 20d of the second substrate 20. For the pixel electrode 9a and the common electrode 21, a light-transmitting conductive film such as an ITO (Indium Tin Oxide) film is used.

  On the other hand, when the liquid crystal device 100 is configured as a reflective liquid crystal device, light incident from the second substrate 20 side is reflected by the first substrate 10 side and emitted from the second substrate 20 side. The light is modulated by the liquid crystal layer 50 and emitted. Therefore, in the reflective liquid crystal device 100, a transparent conductive film such as an ITO film is used for the common electrode 21, while an aluminum-based material such as aluminum or an aluminum alloy, silver or silver is used for the pixel electrode 9a. A reflective electrode made of a silver-based material such as an alloy is used. Further, when the liquid crystal device 100 is configured as a reflective liquid crystal device, the liquid crystal is reflected while light incident from the first substrate 10 is reflected by the second substrate 20 and emitted from the first substrate 10. In some cases, the light is modulated by the layer 50 and emitted. In this case, a translucent conductive film such as an ITO film is used for the pixel electrode 9a, while a reflective electrode such as an aluminum-based material or a silver-based material is used for the common electrode 21.

(Detailed configuration of liquid crystal device)
FIG. 3 is a perspective view showing a state in which a flexible wiring board is connected to the liquid crystal panel 100p in the liquid crystal device 100 according to Embodiment 1 of the present invention. 4A, 4B, 4C, and 4D are plan views showing a state in which a flexible wiring board is connected to the liquid crystal panel 100p in the liquid crystal device 100 according to Embodiment 1 of the present invention, and arrow A It is explanatory drawing which shows the reason for providing a bending part in a view, B arrow view, and a flexible wiring board. In FIG. 3, the terminals, electrodes, and wirings formed on the first substrate and the flexible wiring board are not shown. In FIG. 4A, the electrodes and the electrodes formed on the flexible wiring board are omitted. Only a part of the wiring is shown. In FIG. 4A, the flexible wiring board is indicated by a thick dashed line.

  As shown in FIGS. 2, 3 and 4, in the liquid crystal panel 100p used in the liquid crystal device 100 of the present embodiment, the first substrate 10 has a rectangular planar shape having four sides 10e, 10f, 10g and 10h. have. Similarly to the first substrate 10, the second substrate 20 has a rectangular planar shape having four sides 20e, 20f, 20g, and 20h. In this embodiment, the first substrate 10 is larger than the second substrate 20, and the first substrate 10 and the second substrate 20 are bonded to each other with the sealant 107 in a shifted state. The sealing material 107 is provided along the outer peripheral edge of the overlapping region between the first substrate 10 and the second substrate 20.

  In the first substrate 10, the end on the side where the side 10e is located is a first substrate side protruding region 10r protruding from the side 20e of the second substrate 20, and the first substrate 10 is adjacent to the side 10e. The end portion on the side where the side 10f is located is a first substrate side protruding region 10s protruding from the side 20f of the second substrate 20. Further, the end portion of the second substrate 20 on the side where the side 20 g is located is a second substrate side protruding region 20 t protruding from the side 10 g of the first substrate 10.

  On the substrate surface 10x side of the first substrate 10, a plurality of first substrate side terminals 13a (data line driving circuit terminals) are formed in the first substrate side protruding region 10r, and the plurality of first substrate sides The terminals 13a are arranged along the side 10e. In this embodiment, the data line driving circuit 101 is also formed in the first substrate side overhanging region 10r like the first substrate side terminal 13a, and the first substrate side terminal 13a and the data line driving circuit 101 are connected by the wiring 19a. Electrically connected.

  Further, on the substrate surface 10x side of the first substrate 10, a plurality of first substrate side terminals 13b (scanning line drive circuit terminals) are formed in the first substrate side projecting region 10s, and the plurality of first substrates are provided. The board side terminals 13b are arranged along the side 10f. In this embodiment, similarly to the first substrate side terminal 13b, the scanning line driving circuit 104 is also formed in the first substrate side protruding region 10s, and the first substrate side terminal 13b and the scanning line driving circuit 104 are connected by the wiring 19b. Electrically connected.

  In addition, on the substrate surface 20 x side of the second substrate 20, a second substrate side terminal 23 is formed in the second substrate side protruding region 20 t by an extended portion from the common electrode 21.

(Configuration of flexible wiring board)
As shown in FIGS. 3 and 4, in the liquid crystal device 100 of the present embodiment, a flexible wiring board 70 (wiring board) is provided on the liquid crystal panel 100p for the purpose of supplying various signals and constant potentials to the liquid crystal panel 100p from the outside. It is connected. The flexible wiring board 70 is a double-sided board including a main body portion 71 having an L-shape in English letters and a strip-shaped portion 72 extending from an end portion of the main body portion 71. The main body portion 71 includes a first rectangular portion 71a and a second rectangular portion 71b protruding in an orthogonal direction from the end of the first rectangular portion 71a. It extends from the end opposite to the side where the one rectangular portion 71a is located. In the flexible wiring board 70 having such a configuration, a connector 79 is mounted on the board surface 10x.

  Two inner edge portions of the main body portion 71 having an L shape in the flexible wiring board 70 are overlapped in a plan view with respect to the substrate surface 10x side of the first substrate side protruding regions 10r and 10s of the first substrate 10. 70r, 70k. In such a flexible wiring board 70, on one surface 70x of a base material sheet 77 made of polyimide resin or the like, first electrodes 73a and 73b connected to the first board side terminals 13a and 13b are connected to the first connection regions 70r and 70k. Is formed. More specifically, of the first connection regions 70r and 70k of the flexible wiring board 70, the first connection region 70r that overlaps the first substrate-side overhanging region 10r of the first substrate 10 is connected to the first substrate-side terminal 13a. A first electrode 73a to be connected is formed, and the first electrode 73a is connected to the first substrate side terminal 13a by an anisotropic conductive material 80a. The first electrode 73 a is electrically connected to the connector 79 by a wiring (not shown) formed on the one surface 70 x of the flexible wiring board 70. Therefore, various signals and constant potentials can be supplied to the data line driving circuit 101 from the outside through the connector 79, the flexible wiring board 70, and the first board side terminal 13a.

  Further, in the flexible wiring board 70, a first electrode 73b connected to the first substrate side terminal 13b is formed in the first connection region 70k overlapping the first substrate side projecting region 10s, and the first electrode 73b is The first substrate side terminal 13b is connected by an anisotropic conductive material 80b. The first electrode 73b is electrically connected to the connector 79 by wiring (not shown) formed on the one surface 70x of the flexible wiring board 70. Therefore, various signals and constant potentials can be supplied to the scanning line driving circuit 104 from the outside via the connector 79, the flexible wiring board 70, and the first board side terminal 13b.

  In addition, the distal end side of the strip-like portion 72 of the flexible wiring board 70 is a second connection region 70t that overlaps the substrate surface 20x side of the second substrate-side overhanging region 20t of the second substrate 20 in plan view. On the other surface 70y of the flexible wiring substrate 70, a second electrode 73c connected to the second substrate side terminal 23 is formed in the second connection region 70t, and the second electrode 73c is connected to the second substrate side terminal 23. Are connected by a conductive material 80c such as an anisotropic conductive material or a conductive paste. The second electrode 73 c is electrically connected to the external terminal 78 by wiring (not shown) formed on the other surface 70 y of the flexible wiring board 70. For this reason, a common potential can be supplied to the common electrode 21 from the outside via the flexible wiring board 70.

  Here, the first substrate 10 includes first substrate-side terminals 13a and 13b on the substrate surface 10x facing the second substrate 20, and one flexible wiring substrate 70 is provided for the first substrate-side terminals 13a and 13b. The first electrodes 73a and 73b formed in the direction 70x are connected. The second substrate 20 includes a second substrate side terminal 23 on the substrate surface 20 x facing the first substrate 10, and is formed on the other surface 70 y of the flexible wiring substrate 70 with respect to the second substrate side terminal 23. The second electrode 73c is connected. In adopting such a connection structure, in this embodiment, when the surface of the first substrate side terminals 13a and 13b and the surface of the second substrate side terminal 23 are compared, the surface of the first substrate side terminals 13a and 13b and the second surface The surface of the board-side terminal 23 is substantially on the same plane, or the surface of the second board-side terminal 23 is located closer to the first board 10 than the surfaces of the first board-side terminals 13a and 13b. Therefore, the first electrodes 73 a and 73 b of the flexible wiring board 70 are connected to the first board side terminals 13 a and 13 b of the first board 10, and the second electrode 73 c of the flexible wiring board 70 is connected to the second board 20 of the second board 20. When connected to the side terminal 23, as shown in FIG. 4D, the base portion of the belt-like portion 72 is curved. As a result, reaction forces (shape return force) as indicated by arrows F1 and F2 are generated at the root portion of the belt-like portion 72, and the shape return force is, for example, in the first substrate side overhang region 20t. The direction stress which tries to separate from 10 is generated.

  Therefore, in the flexible wiring board 70 used in this embodiment, the second connection region 70t side is located between the first connection region 70k and the second connection region 70t when viewed from the first connection region 70k side. A first bent portion 75a that is bent obliquely downward on the side where the first substrate 10 is located, and a portion that is located closer to the second connection region 70t than the first bent portion 75a is bent so as to be parallel to the first substrate 10. A second bent portion 75b is formed. In this embodiment, the bent portion 75 including the first bent portion 75 a and the second bent portion 75 b is formed at the root portion of the band-like portion 72 of the flexible wiring board 70. Therefore, the first electrodes 73 a and 73 b of the flexible wiring board 70 are connected to the first board side terminals 13 a and 13 b of the first board 10, and the second electrode 73 c of the flexible wiring board 70 is connected to the second board 20 of the second board 20. Even when connected to the side terminal 23, the shape restoring force is unlikely to be generated at the root portion of the belt-like portion 72.

(Main effects of this form)
As described above, in the liquid crystal device 100 of the present embodiment, the second electrode 73 c of the flexible wiring board 70 is connected to the second board side terminal 23 provided on the second board 20 to be formed on the second board 20. The common electrode 21 is fed. For this reason, it is not necessary to employ a configuration in which the common electrode 21 is fed with the inter-substrate conductive material interposed between the first substrate 10 and the second substrate 20. For this reason, the process which requires much labor, such as application | coating of a conductive material for forming the board | substrate conduction | electrical_connection material, hardening, is unnecessary. In addition, since it is not necessary to provide an inter-substrate conduction electrode in a region (peripheral region) outside the pixel region 110 of the first substrate 10, the peripheral region that does not directly contribute to image display can be narrowed.

  The flexible wiring board 70 connected to the second board 20 is also connected to the first board 10. For this reason, since the electric power feeding with respect to the 1st board | substrate 10 and the 2nd board | substrate 20 can be performed with the sheet | seat of flexible wiring board 70, the number of parts can be reduced.

  Further, since the common electrode 21 of the second substrate 20 is electrically connected to the outside via the second substrate side terminal 23 and the flexible wiring substrate 70, a potential not used in the first substrate 10 is applied. You can also. Therefore, when inversion driving is performed in the liquid crystal device 100, the potential of the common electrode 21 can be easily changed.

  In this embodiment, since the flexible wiring board 70 is a double-sided board, the first board-side terminals 13a and 13b provided on the board surface 10x side facing the second board 20 in the first board 10 and the second board In FIG. 20, the flexible wiring board 70 can be easily connected to the second board side terminal 23 provided on the board surface 20 x side facing the first board 10.

  In addition, since the first board side terminals 13a and 13b are divided and arranged in two sides 10e and 10f of the first board 10, the first board side terminals 13a and 13b are arranged even when the number of the first board side terminals 13a and 13b is large. There is no need to unnecessarily increase the length of the side of the substrate 10. Therefore, even when a large number of first substrate side terminals 13a and 13b are required for the purpose of handling a large number of signals as in the case of adopting a digital method as a driving method, the length of the side of the first substrate 10 is required. It can cope without lengthening.

[Embodiment 2]
FIG. 5 is a perspective view showing a state in which a flexible wiring board is connected to the liquid crystal panel 100p in the liquid crystal device 100 according to Embodiment 2 of the present invention. Since the basic configuration of this embodiment is the same as that of Embodiment 1, common portions are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 5, even in the liquid crystal panel 100p used in the liquid crystal device 100 of the present embodiment, the end on the side where the side 10e is located in the first substrate 10 is the same as in the first embodiment. The first substrate 10 projects from the side 20e, and the end of the first substrate 10 on the side where the side 10f adjacent to the side 10e is located is the second substrate 20 projecting from the side 20f. One substrate side projecting region 10s. Further, the end portion of the second substrate 20 on the side where the side 20 g is located is a second substrate side protruding region 20 t protruding from the side 10 g of the first substrate 10.

  On the substrate surface 10x side of the first substrate 10, a plurality of first substrate side terminals 13a are formed in the first substrate side projecting region 10r, and the plurality of first substrate side terminals 13a extend along the side 10e. Are arranged. Further, a plurality of first substrate side terminals 13b are formed in the first substrate side projecting region 10s on the substrate surface 10x side of the first substrate 10, and the plurality of first substrate side terminals 13b are connected to the side 10f. Are arranged along. In addition, on the substrate surface 20 x side of the second substrate 20, a second substrate side terminal 23 is formed in the second substrate side protruding region 20 t by an extended portion from the common electrode 21.

  In the liquid crystal device 100 of this embodiment, a flexible wiring board 70 is connected to the liquid crystal panel 100p for the purpose of supplying various signals and constant potential to the liquid crystal panel 100p from the outside. The flexible wiring board 70 is a double-sided board provided with a main body portion 71 having an L shape of English letters and a strip-like portion 72 extending from the main body portion 71. The main body portion 71 includes a first rectangular portion 71a and a second rectangular portion 71b that protrudes in an orthogonal direction from the end of the first rectangular portion 71a.

  In the flexible wiring board 70, the first board side terminals 13 a and 13 b are provided in the first connection areas 70 r and 70 k that overlap in plan view with the board side 10 x side of the first board side projecting areas 10 r and 10 s of the first board 10. The first electrodes 73a and 73b connected to are formed. Further, the front end side of the belt-like portion 72 of the flexible wiring board 70 is a second connection region 70t that overlaps in plan view with the substrate surface 20x side of the second substrate side overhang region 20t of the second substrate 20, In the second connection region 70t, a second electrode 73c connected to the second substrate side terminal 23 is formed.

  In the flexible wiring board 70 used in this embodiment, the main body portion 71 has a third rectangular portion 71c extending obliquely outward from a corner portion where the first rectangular portion 71a and the second rectangular portion 71b are connected. The connector 79 is mounted on the end of the third rectangular portion 71c. For this reason, in the flexible wiring board 70, the wiring 76a extends from the first electrode 73a in the first connection region 70r to the connector 79 via the first rectangular portion 70a and the third rectangular portion 70c. A wiring 76b extends from the first electrode 73b in the region 70k to the connector 79 via the second rectangular portion 70b and the third rectangular portion 70c. Accordingly, the wiring 76a and the wiring 76b extend obliquely in the direction in which they approach each other.

  Therefore, according to the present embodiment, in the flexible wiring board 70, the length of the wiring 76a extending from the position overlapping one of the two sides 10e and 10f of the first substrate 10 and the other side 10f. The difference with the length of the wiring 76b extending from the position overlapping with can be reduced. Further, the length of the wirings 76a and 76b can be shortened. For this reason, it is possible to suppress the deterioration of the signal waveform caused by the wiring resistance.

[Embodiment 3]
FIG. 6 is an explanatory diagram showing a layout of electrical components of the first substrate 10 of the liquid crystal device 100 according to Embodiment 3 of the present invention. 7A, 7B, and 7C are a perspective view, a plan view, and a C arrow view showing a state where a flexible wiring board is connected to the liquid crystal panel 100p in the liquid crystal device 100 according to Embodiment 3 of the present invention. FIG. In FIG. 7A, the terminals, electrodes, and wirings formed on the first substrate and the flexible wiring board are not shown, and in FIG. 7B, the terminals, electrodes, and wirings are formed on the flexible wiring board. Only a part of the electrodes and wirings are shown. Moreover, in FIG.7 (b), the flexible wiring board is shown with the thick dashed-dotted line.

  As shown in FIGS. 6 and 7, in the first substrate 10 used in the liquid crystal device 100 of the present embodiment, the scanning line driving circuit 104 is provided at two positions sandwiching the pixel region 110 on both sides in the scanning line extending direction. ing. Also in this embodiment, the first substrate 10 has a rectangular planar shape having four sides 10e, 10f, 10g, and 10h. Similarly to the first substrate 10, the second substrate 20 has a rectangular planar shape having four sides 20e, 20f, 20g, and 20h. The second substrate 20 has a larger width dimension than the first substrate 10, and the first substrate 10 and the second substrate 20 are bonded to each other in a shifted state.

  In this embodiment, in the first substrate 10, the end on the side where the side 10 e is located is a first substrate side projecting region 10 r that projects from the side 20 e of the second substrate 20. On the substrate surface 10x facing the substrate 20, a plurality of first substrate-side terminals 13a electrically connected to the data line driving circuit 101 are arranged along the side 10e in the first substrate-side protruding region 10r.

  In the present embodiment, the plurality of first substrate side terminals 13b electrically connected to the scanning line driving circuit 104 also have the substrate surface 10x facing the second substrate 20 in the first substrate 10 like the first substrate side terminals 13a. Are arranged along the side 10e in the first substrate side overhanging region 10r. Here, the first board side terminal 13b is provided on both sides of the first board side terminal 13a, and the first board side terminal 13a and the first board side terminal 13b are arranged in a line.

  Further, in the second substrate 20, end portions on the side where the opposing sides 20 f and 20 h are located are second substrate side protruding regions 20 s and 20 u protruding from the sides 10 f and 10 h of the first substrate 10. On the substrate surface 20x of the second substrate 20 facing the first substrate 10, second substrate-side terminals 23s and 23u are formed in the second substrate-side protruding regions 20s and 20u by extending portions from the common electrode 21. .

  Also in the liquid crystal device 100 of this embodiment, the flexible wiring board 70 is connected to the liquid crystal panel 100p for the purpose of supplying various signals and constant potentials to the liquid crystal panel 100p from the outside, as in the first embodiment. The flexible wiring board 70 is a double-sided board provided with a main body portion 74a and two strip portions 72a and 72b extending from both ends of the main body portion 74a in the width direction. A connector 79 is mounted on the opposite one surface 70x side.

  In the main body portion 74 a of the flexible wiring board 70, the edge portion sandwiched between the band-like portions 72 a and 72 b overlaps with the substrate surface 10 x side of the first substrate side overhang region 10 r of the first substrate 10 in a plan view. This is an area 70r. On one surface 70x of the flexible wiring board 70, first electrodes 73a and 73b connected to the first board side terminals 13a and 13b by the anisotropic conductive material 80e are formed in the first connection region 70r. The first electrodes 73a and 73b are electrically connected to the connector 79 through wiring. Therefore, as shown by arrows V1 and V2 in FIG. 6, various signals and constant potentials are externally applied to the data line driving circuit 101 and the data holding circuit 102 via the connector 79, the flexible wiring board 70, and the first board side terminal 13a. Can be supplied. Further, as indicated by an arrow V3 in FIG. 6, various signals and constant potentials can be supplied to the scanning line driving circuit 104 from the outside via the connector 79, the flexible wiring board 70, and the first board side terminal 13b.

  In addition, the distal end side of the strip-like portions 72a and 72b of the flexible wiring board 70 has a second connection region 70s that overlaps the second substrate side overhanging region 20s of the second substrate 20 in a plan view with respect to the substrate surface 20x side of 20u, It is 70u. On the other surface 70y of the flexible wiring board 70, second electrodes 73s and 73u connected to the second board side terminals 23s and 23u are formed in the second connection regions 70s and 70u, and the second electrodes 73s and 73u are formed. Are connected to the second substrate side terminals 23s, 23u by conductive materials 80s, 80u such as anisotropic conductive material or conductive paste. The second electrodes 73 s and 73 u are electrically connected to the external terminal 78 by wiring (not shown) formed on the other surface 70 y of the flexible wiring board 70. For this reason, a common potential can be supplied to the common electrode 21 from the outside via the flexible wiring board 70.

  Here, on one surface 70x of the flexible wiring board 70, the first connection region 70r is connected to the substrate surface 10x of the first substrate 10, and on the other surface 70y of the flexible wiring substrate 70, the second connection regions 70s and 70u are connected to the first surface 70x. When connected to the substrate surface 20x of the two substrates 20, as described with reference to FIG. 4D, the base portions of the belt-like portions 72a and 72b are curved, and a shape restoring force is generated. Therefore, also in this embodiment, as in the first embodiment, in the flexible printed circuit board 70, between the first connection region 70r and the second connection region 70s (the root portion of the band-shaped portion 72a) and between the first connection region 70r and the first connection region 70r. When viewed from the side of the first connection region 70r, the second connection regions 70s and 70u are inclined diagonally to the side where the first substrate 10 is located between the two connection regions 70u (the base portion of the band-shaped portion 72b). A first bent portion 75a to be bent and a second bent portion 75b to bend the portion located closer to the second connection regions 70s and 70u than the first bent portion 75a so as to be parallel to the first substrate 10. A bent portion 75 is provided.

  As described above, also in the liquid crystal device 100 of the present embodiment, the second electrodes 73 s and 73 u of the flexible wiring board 70 are connected to the second substrate-side terminals 23 s and 23 u provided on the second substrate 20 as in the first embodiment. Thus, power is supplied to the common electrode 21 formed on the second substrate 20. For this reason, it is not necessary to employ a configuration in which the common electrode 21 is fed with the inter-substrate conductive material interposed between the first substrate 10 and the second substrate 20. Therefore, a process that requires a lot of labor such as application and curing of a conductive material for forming the inter-substrate conductive material is unnecessary. In addition, since it is not necessary to provide an inter-substrate conduction electrode in a region (peripheral region) outside the pixel region 110 of the first substrate 10, the peripheral region that does not directly contribute to image display can be narrowed. Further, since the flexible wiring substrate 70 connected to the second substrate 20 is also connected to the first substrate 10, power can be supplied to the first substrate 10 and the second substrate 20 with one flexible wiring substrate 70. The same effects as in the first embodiment can be obtained.

[Embodiment 4]
FIG. 8 is an explanatory diagram showing a layout of electrical components of the first substrate 10 of the liquid crystal device 100 according to the fourth embodiment of the present invention. 9A, 9B, and 9C are a perspective view, a plan view, and an arrow D view showing a state in which a flexible wiring board is connected to the liquid crystal panel 100p in the liquid crystal device 100 according to Embodiment 4 of the present invention. FIG. In FIG. 9A, the terminals, electrodes, wirings, and the like formed on the first substrate and the flexible wiring board are not shown. In FIG. 9B, the terminals, electrodes, and wirings are formed on the flexible wiring board. Only a part of the electrodes and wirings are shown. Moreover, in FIG.9 (b), the flexible wiring board is shown with the thick dashed-dotted line.

  As shown in FIGS. 8 and 9, in the first substrate 10 used in the liquid crystal device 100 of the present embodiment, the scanning line driving circuit 104 is provided at two positions sandwiching the pixel region 110 on both sides in the scanning line extending direction. ing. Also in this embodiment, the first substrate 10 has a rectangular planar shape having four sides 10e, 10f, 10g, and 10h. Similarly to the first substrate 10, the second substrate 20 has a rectangular planar shape having four sides 20e, 20f, 20g, and 20h. The second substrate 20 has a larger width dimension than the first substrate 10, and the first substrate 10 and the second substrate 20 are bonded together in a shifted state.

  In this embodiment, in the first substrate 10, end portions on the side where the sides 10 e and 10 g are located are first substrate side protruding regions 10 r and 10 t protruding from the sides 20 e and 10 g of the second substrate 20. In the substrate surface 10x of the first substrate 10 facing the second substrate 20, a plurality of first substrate-side terminals 13a electrically connected to the data line driving circuit 101 are provided along the side 10e in the first substrate-side protruding region 10r. Are arranged. In addition, the plurality of first substrate side terminals 13b electrically connected to the scanning line driving circuit 104 are arranged in the first substrate side projecting region 10t on the substrate surface 10x facing the second substrate 20 in the first substrate 10. It is arranged along 10 g.

  In the second substrate 20, end portions on the side where the opposing sides 20 f and 20 h are located are second substrate side projecting regions 20 s and 20 u that project from the sides 10 f and 10 h of the first substrate 10. On the substrate surface 20x of the second substrate 20 facing the first substrate 10, second substrate-side terminals 23s and 23u are formed in the second substrate-side protruding regions 20s and 20u by extending portions from the common electrode 21. .

  Also in the liquid crystal device 100 of this embodiment, the flexible wiring board 70 is connected to the liquid crystal panel 100p for the purpose of supplying various signals and constant potentials to the liquid crystal panel 100p from the outside, as in the first embodiment. The flexible wiring board 70 includes a main body portion 74a, two belt-like portions 72a and 72b extending from both ends in the width direction of the main body portion 74a, and a connecting portion 74bb for connecting the tip portions of the belt-like portions 72a and 72b. A connector 79 is mounted on the side of one surface 70 x facing the second substrate 20 in the flexible wiring substrate 70.

  In the main body portion 74 a of the flexible wiring board 70, the edge portion sandwiched between the band-like portions 72 a and 72 b overlaps with the substrate surface 10 x side of the first substrate side overhang region 10 r of the first substrate 10 in a plan view. This is an area 70r. On the one surface 70x of the flexible wiring substrate 70, a first electrode 73r connected to the first substrate side terminal 13a by an anisotropic conductive material 80r is formed in the first connection region 70r, and the first electrode 73r. Is electrically connected to the connector 79 through wiring. Therefore, as shown by arrows V1 and V2 in FIG. 8, various signals and constant potentials are externally applied to the data line driving circuit 101 and the data holding circuit 102 via the connector 79, the flexible wiring board 70, and the first board side terminal 13a. Can be supplied.

  Further, in the connecting portion 74b of the flexible wiring board 70, the edge portion sandwiched between the strip-like portions 72a and 72b overlaps the substrate surface 10x side of the first substrate-side overhanging region 10t of the first substrate 10 in a plan view. One connection area 70w. On one surface 70x of the flexible wiring board 70, a first electrode 73w connected to the first board side terminal 13b by an anisotropic conductive material 80w is formed in the first connection region 70w, and the first electrode 73w is formed. Is electrically connected to the connector 79 through wiring. Therefore, as shown by an arrow V3 in FIG. 8, various signals and constant potentials can be supplied to the scanning line driving circuit 104 from the outside via the connector 79, the flexible wiring board 70, and the first board side terminal 13b.

  In addition, the distal end side of the strip-like portions 72a and 72b of the flexible wiring board 70 has a second connection region 70s that overlaps the second substrate side overhanging region 20s of the second substrate 20 in a plan view with respect to the substrate surface 20x side of 20u, It is 70u. On the other surface 70y of the flexible wiring board 70, second electrodes 73s and 73u connected to the second board side terminals 23s and 23u are formed in the second connection regions 70s and 70u, and the second electrodes 73s and 73u are formed. Are connected to the second substrate side terminals 23s, 23u by conductive materials 80s, 80u such as anisotropic conductive material or conductive paste. The second electrodes 73 s and 73 u are electrically connected to the external terminal 78 by wiring (not shown) formed on the other surface 70 y of the flexible wiring board 70. For this reason, a common potential can be supplied to the common electrode 21 from the outside via the flexible wiring board 70.

  Here, the first connection regions 70r and 70w of the flexible wiring substrate 70 are connected to the substrate surface 10x of the first substrate 10, and the second connection regions 70s and 70u of the flexible wiring substrate 70 are connected to the substrate surface 20x of the second substrate 20. When connected, as described with reference to FIG. 4 (d), the connecting portions between the strip portions 72a, 72b and the main body portion 74a, and the connecting portions between the strip portions 72a, 72b and the connecting portion 74b are curved and shaped. Restoring force will be generated. Therefore, in the present embodiment as well, in the flexible wiring board 70, the first connection between the first connection region 70r and the second connection region 70s (the connection portion between the belt-like portion 72a and the main body portion 74a) is performed as in the first embodiment. Between the region 70r and the second connection region 70u (connection portion between the strip portion 72b and the main body portion 74a) and between the first connection region 70w and the second connection region 70s (connection between the strip portion 72a and the connecting portion 74b). A bent portion 75 is provided between the first connection region 70w and the second connection region 70u (a connection portion between the belt-like portion 72b and the connection portion 74bb). The bent portion 75 includes first and second bent portions 75a for bending the second connection regions 70s and 70u obliquely toward the side where the first substrate 10 is located, as viewed from the first connection regions 70r and 70w. A second bent portion 75b that bends the portion located on the second connection region 70s, 70u side of the first bent portion 75a so as to be parallel to the first substrate 10 is provided.

  As described above, also in the liquid crystal device 100 of the present embodiment, the second electrodes 73 s and 73 u of the flexible wiring board 70 are connected to the second substrate-side terminals 23 s and 23 u provided on the second substrate 20 as in the first embodiment. Thus, power is supplied to the common electrode 21 formed on the second substrate 20. For this reason, it is not necessary to employ a configuration in which the common electrode 21 is fed with the inter-substrate conductive material interposed between the first substrate 10 and the second substrate 20. Therefore, a process that requires a lot of labor such as application and curing of a conductive material for forming the inter-substrate conductive material is unnecessary. In addition, since it is not necessary to provide an inter-substrate conduction electrode in a region (peripheral region) outside the pixel region 110 of the first substrate 10, the peripheral region that does not directly contribute to image display can be narrowed. Further, since the flexible wiring substrate 70 connected to the second substrate 20 is also connected to the first substrate 10, power can be supplied to the first substrate 10 and the second substrate 20 with one flexible wiring substrate 70. The same effects as in the first embodiment can be obtained.

  Note that in this embodiment, the first substrate-side terminal 13 a that is electrically connected to the data line driver circuit 101 is provided in one of the regions opposed to each other with the pixel region 110 interposed therebetween, and the other is electrically connected to the scanning line driver circuit 104. A first substrate side terminal 13b to be connected was provided. However, a configuration in which the first substrate side terminals 13a and 13b are provided in one of the regions opposed to each other with the pixel region 110 interposed therebetween and one of the first substrate side terminals 13a and 13b is provided in the other may be employed. Further, the first substrate side terminals 13a and 13b may be provided in both of the regions facing each other with the pixel region 110 interposed therebetween.

[Other embodiments]
10 and 11 are explanatory views showing the configuration of a liquid crystal device according to another embodiment of the present invention. In the following description, a configuration in which a configuration described below is added will be described based on the configuration described in the third embodiment.

  In the third embodiment, the data line driving circuit 101 and the scanning line driving circuit 104 are exposed from the flexible wiring board 70. However, as shown in FIG. A configuration in which part or all of the line driving circuit 104 is covered with the flexible wiring board 70 may be employed. In this case, the data line driving circuit 101 and the scanning line driving circuit 104 are preferably covered with a light shielding film such as a copper layer formed on the flexible wiring board 70.

  With this configuration, the flexible wiring board 70 can block light and electromagnetic wave noise that are about to enter the scanning line driving circuit 104 and the data line driving circuit 101. Therefore, in the scanning line driving circuit 104 and the data line driving circuit 101, It is possible to suppress the occurrence of malfunction caused by the incidence of light or electromagnetic noise.

  Further, as shown in FIG. 10B, a configuration in which the outer peripheral side end of the pixel region 110 is covered with a flexible wiring board 70 may be adopted. With this configuration, even if the alignment of the liquid crystal is disturbed at the outer peripheral side end of the pixel region 110, the region is covered with the flexible wiring board 70, so that it is possible to prevent the disorder of the image from being visually recognized. it can.

  In the third embodiment, since the common electrode 21 and the second substrate side terminal 23s are formed simultaneously, the common electrode 21 and the second substrate side terminal 23s have the same film thickness. However, as shown in FIG. 11, the film thickness d2 of the second substrate side terminal 23s may be made thinner than the film thickness d1 of the common electrode 21. When such a configuration is employed, the distance h1 from the substrate surface 10x of the first substrate 10 to the surface of the second substrate-side terminal 23s can be increased. Accordingly, the first electrode 73r formed on the one surface 70x of the flexible wiring board 70 is connected to the first substrate side terminal 13a of the first substrate 10, and the second electrode 73s formed on the other surface 70y of the flexible wiring board 70. Is connected to the second substrate side terminal 23s of the second substrate 20, the bending of the bent portion 75 described with reference to FIG.

  10 and 11 show an example in which the above configuration is adopted in liquid crystal device 100 according to Embodiment 3, but the above configuration is adopted in liquid crystal device 100 according to Embodiments 1, 2, and 4. May be.

  In the first to fourth embodiments, an example in which the scanning line driving circuit 104 and the data line driving circuit 101 are configured by driving transistors formed simultaneously with the pixel transistors 30 has been described. The present invention may be applied to a liquid crystal device in which the data line driving circuit 101 is built in an IC mounted on the first substrate 10.

[Example of mounting on electronic devices]
When the liquid crystal device 100 to which the present invention is applied is configured as a reflection type, the liquid crystal device 100 may be a projection type display device (liquid crystal projector / electronic device) shown in FIG. ) Can be used for portable electronic devices.

  First, the electronic device shown in FIG. 12A is a projection display device 1000, and the light source unit 890 is a polarized illumination in which a light source 810, an integrator lens 820, and a polarization conversion element 830 are arranged along the system optical axis L. A device 800 is included. The light source unit 890 also reflects the S-polarized light beam emitted from the polarization illumination device 800 along the system optical axis L by the S-polarized light beam reflecting surface 841 and the S-polarized light beam of the polarized beam splitter 840. Of the light reflected from the reflecting surface 841, the dichroic mirror 842 that separates the blue light (B) component and the red light (R) component of the luminous flux after the blue light is separated are separated. And a dichroic mirror 843.

  The projection display device 1000 includes three reflective liquid crystal devices 100 (liquid crystal devices 100R, 100G, and 100B) on which each color light is incident, and the light source unit 890 includes three liquid crystal devices 100 (liquid crystal devices 100R). , 100G, 100B).

  In the projection display apparatus 1000, the light modulated by the three liquid crystal devices 100R, 100G, and 100B is synthesized by the dichroic mirrors 842 and 843 and the polarization beam splitter 840, and then the synthesized light is projected by the projection optical system 850. Is projected onto a projection target member such as a screen 860.

  In addition, about a projection type display apparatus, you may comprise the LED light source etc. which radiate | emit the light of each color as a light source part, and supply each color light radiate | emitted from this LED light source to another liquid crystal device. .

  A cellular phone 3000 illustrated in FIG. 12B includes a plurality of operation buttons 3001, scroll buttons 3002, and a reflective liquid crystal device 100 as a display unit. By operating the scroll button 3002, the screen displayed on the liquid crystal device 100 is scrolled. A personal digital assistant 4000 (PDA: Personal Digital Assistants) shown in FIG. 12C includes a plurality of operation buttons 4001, a power switch 4002, and a reflective liquid crystal device 100 as a display unit. When operated, various types of information such as an address book and a schedule book are displayed on the liquid crystal device 100.

  Although not shown, even when the liquid crystal device 100 is configured as a transmission type, the liquid crystal device 100 can be used for a projection display device or a portable electronic device.

9a ··· Pixel electrode, 10 ··· First substrate, 10r, 10s, 10t ··· First substrate side protruding region, 10x, 20x · · Substrate surface, 13a, 13b · · First substrate side terminal, 20 · · · 2 substrate, 20 s, 20 t, 20 u... Second substrate side overhanging region, 21.. Common electrode, 23, 23 s, 23 u... Second substrate side terminal, 30. Flexible wiring board (wiring board), 70r, 70k, 70w, first connection area, 70s, 70t, 70u, second connection area, 73a, 73b, 73r, 73w, first electrode, 73c, 73s, 73u..Second electrode, 100..Liquid crystal device, 101..Data line driving circuit, 104..Scanning line driving circuit, 100a..Pixel, 110..Pixel area, 120..Image display area

Claims (12)

A first substrate provided with a pixel electrode, a scanning line and a data line on one substrate surface;
A second substrate provided with a common electrode on a substrate surface facing the one substrate surface of the first substrate;
A liquid crystal layer held between the first substrate and the second substrate;
A wiring board connected to at least the first board;
A liquid crystal device having
On the substrate surface of the first substrate, a first substrate side terminal is provided in a first substrate side protruding region protruding from an end portion of the second substrate,
The substrate surface of the second substrate is provided with a second substrate side terminal conducting to the common electrode in a second substrate side projecting region projecting from an end of the first substrate,
The wiring board includes a first electrode connected to the first substrate side terminal in a first connection region that overlaps the first substrate side projecting region, and a second connection region that overlaps the second substrate side projecting region. A liquid crystal device comprising a second electrode connected to the second substrate side terminal. A scanning line driving circuit for outputting a scanning signal to the scanning line and a data line for outputting a data signal to the data line outside the pixel region where the pixel electrodes are arranged on the substrate surface of the first substrate. A drive circuit is provided,
The first substrate side terminal includes a scanning line driving circuit terminal electrically connected to the scanning line driving circuit and a data line driving circuit terminal electrically connected to the data line driving circuit. The liquid crystal device according to claim 1, wherein the liquid crystal device is a liquid crystal device.   The liquid crystal device according to claim 2, wherein the wiring board overlaps at least a part of the scanning line driving circuit and the data line driving circuit in a plan view.   4. The liquid crystal device according to claim 1, wherein the wiring board includes the first electrode on one surface and the second electrode on the other surface. 5.   The wiring board includes a first bent portion that bends the second connection area side obliquely between the first connection area and the second connection area to a side where the first board is located, 5. A second bent portion that bends a portion located closer to the second connection region than the first bent portion so as to be parallel to the first substrate. 6. Liquid crystal device.   6. The liquid crystal device according to claim 1, wherein the first substrate side terminals are arranged along a plurality of sides of the first substrate. 7.   The liquid crystal device according to claim 6, wherein the first substrate side terminals are arranged along two adjacent sides of the first substrate.   In the wiring substrate, the wiring extends from the first electrode provided on one side of the two sides of the first substrate, and extends from the first electrode provided on the other side. The liquid crystal device according to claim 7, wherein the wiring extends obliquely toward each other.   The liquid crystal device according to claim 6, wherein the first substrate side terminals are arranged along two opposite sides of the first substrate.   10. The liquid crystal device according to claim 1, wherein the wiring board overlaps with an outer peripheral side end portion of a pixel region in which a plurality of the pixels are arranged in a plan view. The second substrate side terminal is a portion extending from the common electrode,
11. The liquid crystal device according to claim 1, wherein a film thickness of the second substrate side terminal is thinner than a film thickness of the common electrode.   An electronic apparatus comprising the liquid crystal device according to claim 1.

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