JP2005173000A - Electro-optical device and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electro-optical device having a structure permitting electrical connection to a flexible wiring board even if the flexible wiring board is deviated from the installation position when electrically connecting a circuit board constituting an electro-optical device to the flexible wiring board to be located in a predetermined position to this circuit board. <P>SOLUTION: The electro-optical device is provided with an electro-optical panel formed of an electro-optical material, a wiring board 50 in which the circuit for driving the electro-optical panel is wired and which is electrically connected to the electro-optical panel, and the flexible wiring board 60 which is installed in a desired position of the wiring board 50 by folding back a branching part 61 branching in a branch form having a part to be electrically connected to the wiring board 50. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electro-optical device configured using a flexible wiring board, and an electronic apparatus using the electro-optical device.

  Conventionally, an electronic apparatus using an electro-optical device capable of double-sided display has been realized. FIG. 12 is a diagram schematically illustrating a cross section of a liquid crystal display unit in a conventional mobile phone using a liquid crystal display device as an example of an electro-optical device capable of double-sided display. In the housing 250 of the liquid crystal display unit of the cellular phone, there are a first liquid crystal display panel 251 and a second liquid crystal display panel 252 in which liquid crystal is sealed between a pair of upper and lower substrates so that a voltage can be applied. The flexible wiring board 253 is conductively connected to the first liquid crystal display panel 251 so as to overlap each other. The flexible wiring board 253 includes a connector 253a connected to the power supply side, forms a printed wiring pattern, and is electrically mounted with a driver IC 253b. The first and second liquid crystal display panels 251 and 252 are conductively connected by a heat seal 254 formed with a printed wiring pattern (see, for example, Patent Document 1).

  Various connection methods of the first and second liquid crystal display panels 251 and 252 have been proposed on the basis of the structure in which the two first and second liquid crystal display panels 251 and 252 are overlapped. . FIG. 13 is a diagram schematically showing a cross section of a liquid crystal display unit capable of double-sided display, and FIG. 14 schematically shows the liquid crystal display unit when observed from the second liquid crystal display panel side having a small display surface. FIG. In this example, the first and second liquid crystal display panels 251 and 252 are supported on both the front and back surfaces of the frame 255, respectively. A first flexible wiring board 256 is fixed to one end of the first liquid crystal display panel 251. The first flexible wiring board 256 is bent and attached to the back surface of the frame 255. However, the first flexible wiring board 256 has a shape that does not overlap with a portion where the second liquid crystal display panel 252 on the frame 255 is placed when the first flexible wiring board 256 is bent. The second liquid crystal display panel 252 is placed in a support frame 258 provided at a predetermined position on the back side of the frame 255. A second flexible wiring in which an element for driving the second liquid crystal display panel 252 and a wiring for connecting to the first flexible wiring board 256 are also provided at one end of the second liquid crystal display panel 252 A substrate 259 is fixed. The second flexible wiring board 259 has a branch portion 259a having a connecting portion such as a connector for electrical connection at a predetermined position on the first flexible wiring board 256 at the tip. Thus, the first and second flexible wiring boards 256 and 259 are configured to be electrically connected via the connection portion 257. Here, the shape and dimensions of the second flexible wiring board 259 are the same as the connection formed at the predetermined position of the first flexible wiring board 256 when the second liquid crystal display panel 252 is placed at the predetermined position. It is determined as a shape and a dimension that can be connected to the portion 257.

JP 2001-215475 A

  However, in the above-described conventional liquid crystal display device capable of double-sided display, when assembling the first and second liquid crystal display panels 251 and 252, for example, the first liquid crystal display panel 251 of the first flexible wiring board 256 is used. A shift in the position where the second flexible wiring board 259 is attached to the second liquid crystal display panel 252 or the like occurs. As a result, a shift occurs between the position of the connection portion of the second flexible wiring board 259 and the position of the connection portion 257 of the first flexible wiring board 256. As described above, the second flexible wiring board 259 is formed on the basis of the dimensions when the ideal connection as designed is performed. Therefore, when the positional deviation occurs, the first and second flexible wiring boards 259 are formed. The second flexible wiring board 259 cannot be connected to the second flexible wiring board 256 or 259, or even if it can be connected, the second flexible wiring board 259 is subjected to a heavy load. There was a problem of being fooled. Such a problem can occur not only in a liquid crystal display device but also in all electro-optical devices capable of double-sided display.

  The present invention has been made in view of the above, and when electrically connecting a circuit board constituting the electro-optical device and a flexible wiring board disposed at a predetermined position with respect to the circuit board. Another object of the present invention is to provide an electro-optical device having a configuration that can be connected even when the installation position of the flexible wiring board is shifted. It is another object of the present invention to provide an electronic apparatus using the electro-optical device.

  In order to solve the above-described problems and achieve the object, the present invention provides an electro-optical panel in which an electro-optical material is disposed, and a circuit for driving the electro-optical panel, and the electro-optical panel A flexible wiring board that is installed at a predetermined position on the wiring board by folding back a branch-like portion branched into branches having an electrically connected wiring board and a portion that performs electrical connection with the wiring board And. As a result, even if the position of the flexible wiring board installed on the wiring board at the time of assembly is shifted, the portion where the flexible wiring board is electrically connected can be wired by changing the bending condition of the branch part of the flexible wiring board. It becomes possible to match with a predetermined position of the substrate. As a result, the positional deviation between the wiring board and the flexible wiring board at the time of assembly is absorbed, and there is an effect that the connecting portions of both can be connected. In addition, since an excessive load is not applied to the flexible wiring board, there is an effect that the life of the flexible wiring board can be extended.

  According to a preferred aspect of the present invention, a first electro-optical panel in which an electro-optical material is arranged, one end is connected to the first electro-optical panel, and the other end is the first electro-optical panel. A first flexible wiring board which is bent and fixed to the surface opposite to the display surface of the first flexible wiring board, and a circuit for driving the first electro-optical panel is wired thereon, and the display of the first electro-optical panel A second electro-optic panel having an electro-optic material, disposed at a predetermined position on the surface opposite to the surface, and one end connected to the second electro-optic panel, and the first flexible And a second flexible wiring board having a branch-like branching portion provided with a portion for electrical connection with the wiring board, wherein the second flexible wiring board folds the branch-like part. The first flexible And performing an electrical connection at a predetermined position on the line board. As a result, even if the relative position between the first wiring board and the second flexible wiring board is shifted during assembly, the folding state of the branch portions of the second flexible wiring board can be changed. It is possible to match the portion of the second flexible wiring board that is electrically connected to a predetermined position of the first flexible wiring board. As a result, the positional deviation between the first flexible wiring board and the second flexible wiring board at the time of assembly is absorbed, and there is an effect that the connecting portions of both can be connected. Moreover, since an excessive load is not applied to the second flexible wiring board, there is an effect that the life of the second flexible wiring board can be extended.

  According to a preferred aspect of the present invention, in the above invention, a reinforcing member is not formed in a portion where the branch-shaped portion of the second flexible wiring board is folded. Thereby, when connecting a 2nd flexible wiring board with a 1st flexible wiring board, the branch-shaped part of a 2nd flexible wiring board can be bent easily. As a result, no matter how the positions of the first flexible wiring board and the second flexible wiring board are displaced, the branch portion of the second flexible wiring board is deformed in accordance with the deviation. It has the effect that it can connect.

  According to a preferred aspect of the present invention, a first electro-optical panel in which an electro-optical material is arranged, one end is connected to the first electro-optical panel, and the other end is the first electro-optical panel. A first flexible wiring board which is bent and fixed to the surface opposite to the display surface of the first flexible wiring board, and a circuit for driving the first electro-optical panel is wired thereon, and the display of the first electro-optical panel A second electro-optic panel having an electro-optic material, disposed at a predetermined position on the surface opposite to the surface, and one end connected to the second electro-optic panel, and the first flexible And a second flexible wiring board having a U-shaped branch portion branched in a branch shape provided with a portion for electrical connection with the wiring board. Thereby, even if the relative position between the first wiring board and the second flexible wiring board is shifted at the time of assembly, the U-shaped branch portion of the second flexible wiring board is deformed. Thus, it is possible to match the portion of the second flexible wiring board that is electrically connected to a predetermined position of the first flexible wiring board. As a result, the positional deviation between the first flexible wiring board and the second flexible wiring board at the time of assembly is absorbed, and there is an effect that the connecting portions of both can be connected. Moreover, since an excessive load is not applied to the second flexible wiring board, there is an effect that the life of the second flexible wiring board can be extended.

  An electronic apparatus according to the present invention includes the electro-optical device according to any one of the above-described inventions. As a result, even when a slight misalignment occurs during the assembly of the electro-optical device, the misalignment can be absorbed and a plurality of wiring boards can be electrically connected. As a result, the ratio of manufacturing electro-optical devices that cannot be used is reduced, and it is possible to supply electronic equipment with stable quality.

  Exemplary embodiments of an electro-optical device and an electronic apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. In the following, a liquid crystal display device will be described as an example of an electro-optical device, but the present invention is not limited to these embodiments, and a plasma display device, an electroluminescence device, an electrophoresis device, and the like The present invention can also be applied to other electro-optical devices.

  1 to 6B are diagrams illustrating a configuration of a liquid crystal display device as an example of an electro-optical device according to the invention. FIG. 1 is an exploded perspective view schematically showing a configuration of a first embodiment of a liquid crystal display device according to the present invention, and FIG. 2 shows a schematic configuration of a first liquid crystal display panel and a first flexible wiring board. FIG. 3A is a plan view showing a configuration of a first support member constituting the frame, and FIG. 3B is a plan view showing a configuration of a second support member constituting the frame. 4 is a plan view showing a schematic configuration of the second liquid crystal display panel and the second flexible wiring board, and FIG. 5 is a plan view showing an assembled state of the liquid crystal display device. 1 is an AA cross-sectional view of the second flexible wiring board in FIG. 4, and FIG. 6-2 is a BB cross-sectional view of the second flexible wiring board in FIG.

  As shown in FIG. 1, the liquid crystal display device 1 includes a first liquid crystal display panel 10 used for display on one side of the liquid crystal display device 1 capable of double-sided display, and a first liquid crystal display panel 10. , The second liquid crystal display panel 30 used for the display on the other side, the first liquid crystal display panel 10, the backlight unit 20, and the second liquid crystal display A frame 40 for supporting and fixing the panel 30 and elements and wirings for driving the liquid crystal display device 1 are formed, and a first flexible wiring board 50 that is partially fixed to the first liquid crystal display panel 10. And a second flexible wiring board 60 in which elements and wirings for driving the second liquid crystal display panel 30 are formed and a part of the elements is fixed to the second liquid crystal display panel 30. Is . In the following description, the side of the frame 40 on which the first liquid crystal display panel 10 is fixed is referred to as the front side, and the side on which the second liquid crystal display panel 30 is fixed is referred to as the back side.

  The first liquid crystal display panel 10 is configured such that a pair of panel substrates are bonded together via a sealing material, and liquid crystal as an electro-optical element is sealed in the two bonded panel substrates. Electrodes for controlling the liquid crystal are formed in a matrix on the surface of the pair of panel substrates on which the liquid crystal is sealed. One panel substrate of the pair of panel substrates has an overhang region 11 that projects to one side with respect to the other panel substrate. Bumps for connecting the electrodes formed in a matrix and the drive circuit on the first flexible wiring board 50 are formed in the overhang region 11. Note that a drive circuit on the first flexible wiring board 50 may be provided on the overhanging region 11. The second liquid crystal display panel 30 also has the same configuration as the first liquid crystal display panel 10. However, in the second liquid crystal display panel 30, a drive circuit for driving the second liquid crystal display panel 30 is provided on the overhanging region 31. In the present embodiment, the display surface area where information is displayed on the second liquid crystal display panel 30 is smaller than the display surface of the first liquid crystal display panel 10.

  The backlight unit 20 is disposed in contact with the back surface facing the display surface of the first liquid crystal display panel 10, and guides light from a light source mounted on the first flexible wiring board 50. The reflection sheet 22 is configured to reflect light incident on the bottom surface of the light guide plate 21 toward the first liquid crystal display panel 10.

  The frame 40 has a structure for supporting and fixing the first liquid crystal display panel 10 and the second liquid crystal display panel 30 including the backlight unit 20. In this example, as shown in FIGS. 3A to 3B, the frame 40 includes a first support member 41 that supports the backlight unit 20 and the first liquid crystal display panel 10, and a first liquid crystal. A bottom surface of the first support member 41 is formed on the back surface opposite to the display panel 10 so as to support the second liquid crystal display panel 30 and is supported by the first support member 41. The member 42 is comprised. That is, the second support member 42, the backlight unit 20, and the first liquid crystal display panel 10 are installed and fixed in this order on the first support member 41. A support frame 43 is formed on the back side of the second support member 42 so that the second liquid crystal display panel 30 can be accommodated at a predetermined position. The second liquid crystal display panel 30 is placed in the support frame 43. Placed. In addition, a window 44 having substantially the same size as the display surface of the second liquid crystal display panel 30 is provided in the support frame 43. A reflection sheet (not shown) is placed on the window 44.

  The first flexible wiring board 50 includes a light emitting element as a light source for guiding light to the light guide plate 21 of the backlight unit 20 of the first liquid crystal display panel 10, and the first and second liquid crystal display panels 10 and 30. And an element for driving the wiring. One end of the first flexible wiring board 50 is fixed to the overhanging region 11 of the first liquid crystal display panel 10 and is electrically connected to a bump formed on the overhanging region 11. Further, the first flexible wiring board 50 is bent at the other end facing the end connected to the overhanging region 11 to the back side of the frame 40, so that the back side of the frame 40 (second support member 42). ) With double-sided tape or adhesive. The shape of the first flexible wiring board 50 is processed so as not to overlap the second liquid crystal display panel 30 when it is bent and fixed to the frame 40. Furthermore, the first flexible wiring board 50 includes a first connection portion 51 for electrically connecting to a second flexible wiring board 60 described later.

  The second flexible wiring board 60 has elements and wirings for driving the second liquid crystal display panel 30, and one end of the second flexible wiring board 60 is fixed to the overhanging region 31 of the second liquid crystal display panel 30. It is electrically connected to the driving element on the region 31. The second flexible wiring board 60 has a strip-like branch portion 61, and is connected to the first connection portion 51 on the first flexible wiring board 50 at the tip of the branch portion 61. A second connecting portion 62 is formed. In this embodiment, when the second liquid crystal display panel 30 is fixed at a predetermined position on the frame 40, the direction of the tip of the branch portion 61 of the second flexible wiring board 60 is the first connection portion. It is configured to face in a direction different from the direction in which 51 is located. More specifically, the second connecting portion 62 is configured to be connected to the first connecting portion 51 when the branch portion 61 is folded (in the illustrated example, when folded). . The first liquid crystal display panel 10 of the first flexible wiring board 50 is configured by bending the second flexible wiring board 60 and connecting the first and second connection portions 51 and 62. Displacement between the first and second connection portions 51 and 62 caused by displacement of the mounting position to the second liquid crystal display panel 30 or displacement of the second flexible wiring board 60 to the second liquid crystal display panel 30 occurred. Even in this case, the second connecting portion 62 can be easily overlapped with the position of the first connecting portion 51. This utilizes the fact that the position and angle at the time of bending the branch portion 61 can be freely changed so that the second connection portion 62 overlaps the position of the first connection portion 51. The first and second connection portions 51 and 62 may be configured to be connected by a connector, or may be configured to be connected by solder.

  Although the flexible wiring itself has a structure that can be easily bent, it is more desirable that the vicinity of the portion that is bent by the branch portion 61 of the second flexible wiring board 60 is more easily bent than the other portions. FIGS. 6-1 to 6-2 are cross-sectional views schematically showing the configuration of the second flexible wiring board 60 in the case where wiring is provided on both the front and back surfaces, and FIG. FIG. 6B shows a cross section at a portion to be bent. For example, as shown in FIG. 6A, an ordinary flexible wiring board is made of a conductive material such as copper on both surfaces of a base material 81 made of a flexible and insulating material such as polyimide. A metal foil 82 is disposed. By etching a part of the metal foil 82, a wiring pattern 82a is formed. Further, an insulating protective film 83 such as polyimide is coated on the upper portion of the metal foil 82 with an adhesive or the like. On the other hand, as shown in FIG. 6B, the structure in which the metal foil 82 and the protective film 83 existing on the upper side in the structure of FIG. By doing so, it becomes easier to bend compared to a portion having a structure as shown in FIG. In the vicinity of the bent portion where the single-sided metal foil 82 and the protective film 83 are not formed, flexible deformation is performed according to the displacement of the first and second connection portions 51 and 62. The length of the bent portion where the metal foil 82 and the protective film 83 are not formed may be a length that can correspond to a possible misalignment between the first and second connection portions 51 and 62. .

  According to the first embodiment, the connection portion of the flexible wiring board is provided when the connection portion of the circuit board and the connection portion of the flexible wiring board attached at a predetermined position on the circuit board are electrically connected. Since the branch part is bent and connected to the connection part of the circuit board, even if the mounting position of the circuit board and the flexible wiring board is displaced, the deviation is absorbed by bending the flexible wiring board. The effect is that the connecting portions of both can be connected.

  In addition, since the second connection portion 62 is connected to the first connection portion 51 of the first flexible wiring board 50 by bending the branch-like portion 61 of the second flexible wiring board 60, the first This has the effect that the position of the first connecting portion 51 provided on the flexible wiring board 50 can be flexibly changed. In particular, when assembling front and back electro-optical panels of an electro-optical device capable of double-sided display, the second flexible wiring board is electrically connected to an arbitrary position in the space of the first electro-optical panel having a large display area. It becomes possible to provide the 1st connection part for connecting.

  Further, even when the position of the first connection portion 51 is changed in design, if the change in the position is a slight change that is not a significant change, the bending position of the branch portion 61 of the second flexible wiring board 60 is changed. The first connecting portion 51 and the second connecting portion 62 can be connected simply by changing, and the shape and size of the second flexible wiring board 60 can be changed by changing the position of the first connecting portion 51. There is also an effect that it is not necessary to carry out.

  FIG. 7 is a plan view showing a schematic configuration of the second liquid crystal display panel and the second flexible wiring board. The second embodiment is characterized in that the branch portion 61a in which the second connection portion 62 of the second flexible wiring board 60 is formed has a U-shape. Since the branch-shaped portion 61 in which the second connection portion 62 is formed in a U shape in this way, the movable range of the second connection portion 62 of the second flexible wiring board 60 is expanded, so that the first It is possible to easily connect to the connection portion 51 of the above.

  FIG. 8 is a diagram illustrating an example of a connection state of the second flexible wiring board 60. In this figure, the case where the position of the 1st connection part 51 has shifted | deviated slightly to the left side from the design ideal position is illustrated. In this case, when the second liquid crystal display panel 30 is installed on the support frame 43 of the frame 40, the second flexible wiring board 60 exists at a position as indicated by a dotted line L. Hereinafter, the U-shaped branch portion 61a will be described as being divided into a first portion 63A to a third portion 63C for convenience as shown in FIG. That is, the branch-shaped portion 61a is perpendicular to the first portion 63A and the third portion 63C that constitute axes parallel to each other in the U-shape, and one end of the first portion 63A and the third portion 63C. It is comprised with the 2nd part 63B connected.

  When the second connecting portion 62 is moved to the position of the first connecting portion 51 from the state indicated by the dotted line L, the first portion 63A is opposite to the portion connected to the second portion 63B of the third portion 63C. The part of is deformed so as to be displaced inward. Further, a deformation occurs in which the connecting portion between the first portion 63A, the third portion 63C, and the second portion 63B is also bent. The deformation generated in these U-shaped branch portions 61a serves to absorb the above-described misalignment. This is because the shape and size of the branch portion 61a of the second flexible wiring board 60 has only the shape and size necessary for connecting to the first connection portion 51 in the designed ideal state. In comparison, the deformation is absorbed by having a shape and dimensions with a margin so as to be able to cope with a slight misalignment.

  According to the second embodiment, since the branch portion 61a in which the second connection portion 62 of the second flexible wiring board 60 is formed has a U shape, the first liquid crystal display panel 10 and the second A positional shift between the first connecting portion 51 and the second connecting portion 62 due to a shift in the connection position with the liquid crystal display panel 30 can be absorbed.

  In Example 3, a specific example of an electronic apparatus including the electro-optical device described in Examples 1 and 2 will be described. FIGS. 9-1 to 11-2 are examples of electronic apparatuses using the electro-optical device according to the present invention. 9A to 9B are diagrams illustrating an example of a mobile phone to which the electro-optical device according to the invention is applied. A mobile phone 100 according to an embodiment of the electronic apparatus of the present invention is a foldable mobile phone having a use state shown in FIG. 9-1 and a folded state shown in FIG. Part 101 and display body part 102. The electro-optical device is arranged inside the display body unit 102, and the display screen 103 is composed of a front side display surface 103a that is displayed in use on the display body unit 102 and a back side display surface 103b that is displayed in a folded state. It is configured to be visible. FIG. 10 is a perspective view illustrating an example of a wristwatch-type electronic device. The timepiece main body 110 having a built-in timepiece function is provided with a display unit 111 made of the electro-optical device of the present invention. This makes it possible to obtain a wristwatch-type electronic device capable of reversibly wrapping an arbitrary display surface of the front and back display surfaces around the arm. FIGS. 11A and 11B are diagrams illustrating an example of a portable information processing apparatus such as a word processor or a personal computer to which the electro-optical device according to the invention is applied. A portable information processing apparatus 120, which is an embodiment of the electronic apparatus of the present invention, is a foldable portable information processing device having a use state shown in FIG. 11-1 and a folded state shown in FIG. 11-2. The apparatus 120 includes an input unit 122 such as a keyboard, and includes an information processing apparatus main body 124 that stores arithmetic means, storage means, and the like, and a display body 126. The electro-optical device is arranged inside the display body 126, and the display screen 128 is displayed on the front display surface 128a displayed in the use state on the display body 126 and the back display surface 128b displayed in the folded state. It is configured to be visible.

  In addition, as an electronic apparatus provided with such an electro-optical device, a folding cellular phone shown in FIGS. 9-1 to 9-2, a wristwatch-type electronic apparatus shown in FIG. 10, and FIGS. In addition to the portable information processing apparatus shown in FIG. 11-2, for example, a liquid crystal television, a digital still camera, a wristwatch, a viewfinder type or a monitor direct view type video tape recorder, a car navigation device, a pager, an electronic notebook, a calculator, The present invention can be applied to electronic devices that perform double-sided display among electronic devices including electro-optical devices such as workstations, video phones, POS terminals, and mobile computers.

  As described above, the electro-optical device according to the present invention is useful when two display panels on both sides are electrically connected with a flexible wiring board in a display device that has display panels on both front and back sides. is there.

It is a disassembled perspective view which shows the structure of the liquid crystal display device by this invention typically. It is a top view of a 1st liquid crystal display panel and a 1st flexible wiring board. It is a top view which shows the structure of the 1st supporting member which comprises a flame | frame. It is a top view which shows the structure of the 2nd supporting member which comprises a flame | frame. It is a top view of a 2nd liquid crystal display panel and a 2nd flexible wiring board. It is a top view which shows the assembly state of a liquid crystal display device. It is AA sectional drawing of the 2nd flexible wiring board in FIG. It is BB sectional drawing of the 2nd flexible wiring board in FIG. It is a top view of a 2nd liquid crystal display panel and a 2nd flexible wiring board. It is a figure which shows an example of the connection state of a 2nd flexible wiring board. It is a figure which shows an example of an electronic device. It is a figure which shows an example of an electronic device. It is a figure which shows an example of an electronic device. It is a figure which shows an example of an electronic device. It is a figure which shows an example of an electronic device. It is sectional drawing of the prior art example of the electro-optical apparatus in which a double-sided display is possible. It is sectional drawing of the liquid crystal display part in which the conventional double-sided display is possible. It is a top view of the liquid crystal display part in which the conventional double-sided display is possible.

Explanation of symbols

  30 second liquid crystal display panel, 40 frame, 43 support frame, 50 first flexible wiring board, 51 first connection part, 60 second flexible wiring board, 61 branch-like part

Claims (5)

An electro-optic panel in which an electro-optic material is disposed;
A circuit for driving the electro-optical panel is wired, and a wiring board electrically connected to the electro-optical panel;
A flexible wiring board that is installed at a predetermined position on the wiring board by folding back a branch-like part having a portion that performs electrical connection with the wiring board;
An electro-optical device comprising: A first electro-optic panel in which an electro-optic material is disposed;
One end is connected to the first electro-optical panel, and the other end is bent and fixed to the surface opposite to the display surface of the first electro-optical panel, and drives the first electro-optical panel. A first flexible wiring board to which a circuit of
A second electro-optic panel comprising an electro-optic material, disposed at a predetermined position on the surface opposite to the display surface of the first electro-optic panel;
A second flexible wiring board having a branch-like branching portion with one end connected to the second electro-optic panel and provided with a portion for electrical connection with the first flexible wiring board;
The electro-optical device is characterized in that the second flexible wiring board makes an electrical connection at a predetermined position on the first flexible wiring board by folding back the branch portion.   3. The electro-optical device according to claim 1, wherein a reinforcing member is not formed on a portion where the branch-shaped portion of the second flexible wiring board is folded. A first electro-optic panel in which an electro-optic material is disposed;
One end is connected to the first electro-optical panel, and the other end is bent and fixed to the surface opposite to the display surface of the first electro-optical panel, and drives the first electro-optical panel. A first flexible wiring board to which a circuit of
A second electro-optic panel comprising an electro-optic material, disposed at a predetermined position on the surface opposite to the display surface of the first electro-optic panel;
A second end having a U-shaped branch portion branched into a branch shape, one end of which is connected to the second electro-optical panel and provided with a portion for electrical connection with the first flexible wiring board. A flexible wiring board;
An electro-optical device comprising:   An electronic apparatus comprising the electro-optical device according to claim 1.

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