JP2001290438A - Electro-optical devices and electronic equipment - Google Patents

Abstract

(57) [Problem] To eliminate the need for soldering even when connecting a flexible substrate drawn from a plurality of directions of a panel to a common substrate, and to connect the flexible substrate and the common substrate. Thereafter, an electro-optical device capable of separating these substrates from each other and an electronic apparatus using the electro-optical device are provided. In an electro-optical device, a first flexible substrate (90A) and a second flexible substrate (90B) drawn from a panel are routed to the back side through the outside of a holder (6), and are placed on the back side of the panel (2). The first connector 96A and the second connector 96A are connected to the superposed common substrate 90C.
Through a connector 96B. Therefore, on the back side of the panel 2, the first flexible substrate 90
It is not necessary to solder A and the second flexible substrate 90B to the common substrate 90C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an electro-optical device in which an electro-optical material is held between a pair of substrates, and an electronic apparatus using the electro-optical device. More specifically, the present invention relates to an electrode structure on each substrate constituting an electro-optical device.

[0002]

2. Description of the Related Art Among various electro-optical devices, there is a liquid crystal device as a typical one using a panel in which an electro-optical material is held between substrates. In this electro-optical device, FIG.
As shown in FIG. 1, a panel 2X in which a liquid crystal (not shown) as an electro-optical material is held between a first substrate 10X and a second substrate 20X. In this panel 2X, electrodes (not shown) for driving liquid crystal are formed on each of the first substrate 10X and the second substrate 20X, and the first substrate 10X and the second substrate 20X are formed via these electrodes. An electric field is applied between the substrate and the substrate 20X, and a predetermined image is displayed by controlling the alignment state of the liquid crystal by the electric field.

For this reason, in the electro-optical device 1X, the first flexible substrate 9 is located at a position corresponding to two sides of the panel 2X.
0X and the second flexible board 90Y are connected, and signals are input from these flexible boards 90X and 90Y to the panel 2X. Here, a common substrate 90 </ b> Z is placed on the back surface of the panel 2 </ b> X so as to overlap with the common substrate 90 </ b> X.
By connecting the first flexible substrate 90X and the second flexible substrate 90Y to Z by soldering, the panel 2X is electrically connected to the outside via the common substrate 90Z.

In the transmissive electro-optical device 1X, thin optical components such as a light guide plate 92 made of plastic are arranged on the back surface of the panel 2X. 90Z.

FIG. 15 shows an example in which the driving ICs 7X and 7Y are mounted on the first flexible substrate 91X and the second flexible substrate 91Y, respectively.
An electro-optical device in which a driving IC is mounted on the first substrate 10X and the second substrate 20X, and a type in which a driving circuit is configured on the first substrate 10X or the second substrate 20X. Panel 2 for electro-optical devices
When the flexible substrate is drawn out from two directions with respect to X, it may be configured as shown in FIG.

[0006]

However, FIG.
In order to manufacture the electro-optical device 1 </ b> X shown in FIG. 7, after manufacturing the panel 2 </ b> X, the common substrate 90 </ b> Z
It is necessary to connect the first flexible board 90X and the second flexible board 90Y to the panel 2X by soldering in such a state. Alternatively, an optical component sandwiched between the panel 2X and the common substrate 90C may be damaged. In particular, the light guide plate 9 as an optical component
When placing plastic parts such as 2,
There is a problem that the plastic parts are significantly damaged.

In the manufacturing process of the electro-optical device 1X, after the common substrate 90Z is connected to the first flexible substrate 10X and the second flexible substrate 20X, the common substrate 90Z, the first flexible substrate 90X and the second flexible substrate 90X are connected. There is a case where it is desired to separate the flexible substrate 90 </ b> Y from the electro-optical device 1 </ b> X and perform reworking, etc., but when the common substrate 90 </ b> Z, the first flexible substrate 90 </ b> X, and the second There is a problem that such rework is impossible or takes considerable time.

[0008] In view of the above problems, an object of the present invention is to provide:
There is no need to solder even when connecting a flexible substrate drawn from the panel in a different direction to the common substrate,
Another object of the present invention is to provide an electro-optical device capable of separating a flexible substrate and a common substrate from each other after connecting the substrates, and an electronic apparatus using the electro-optical device.

[0009]

In order to solve the above-mentioned problems, according to the present invention, there is provided a panel in which an electro-optical material is held between a pair of substrates, and first and second panels which are respectively drawn from the panel in different directions. A second flexible substrate and a common substrate stacked on the back surface of the panel, wherein the first and second substrates are bent from the panel to the back surface so as to cover the common substrate. In an electro-optical device in which a flexible substrate is connected to the common substrate, the common substrate and the first and second flexible substrates are connected via a connector.

In the present invention, the first flexible substrate and the second flexible substrate
The flexible substrate is connected via a connector to a common substrate stacked on the back side of the panel. Therefore, it is not necessary to solder the first flexible substrate and the second flexible substrate to the common substrate on the rear surface side of the panel, so that the panel is damaged by heat and pressure during soldering. Problem can be avoided. In addition, since the connection is made by a connector, it is easy to separate the common substrate, the first flexible substrate, and the second flexible substrate after connecting the substrates. It is easy to disassemble and rework.

In the present invention, the connector is attached to the first flexible substrate and the second flexible substrate, and the connector is connected to the common substrate. There is a case where a first flexible substrate and a second flexible substrate are connected to the package.

In the present invention, an optical component may be interposed between the panel and the common substrate. Even with such a configuration, the first side on the back side of the panel
It is not necessary to solder the flexible substrate and the second flexible substrate to the common substrate, so that the problem of damage to optical components due to heat and pressure during soldering can be avoided.

When the present invention is applied to a case where the optical component includes a light guide plate, particularly a light guide plate made of plastic, the effect is large. Since the plastic light guide plate is easily damaged by heat, according to the present invention, the first flexible substrate and the second flexible substrate are sandwiched between the panel and the common substrate with the plastic light guide plate interposed therebetween. Even when the flexible substrate is connected to the common substrate, the problem that the light guide plate made of plastic is damaged can be avoided.

In the electro-optical device according to the present invention, a frame-like holder for holding the panel and the common substrate on the front side and the back side, respectively, may be used. In this case, the first and second flexible substrates are bent from the front surface side of the holder to the back surface side of the holder through the outside of the holder and connected to the common substrate via the connector. It is preferred that In such a configuration, when the first flexible substrate and the second flexible substrate are connected to the common substrate by the connector, the holder is connected to the first flexible substrate connecting the panel and the common substrate. It is held in a state held by the flexible substrate and the second flexible substrate. Therefore, in the manufacturing process of the electro-optical device, the holder, the panel, and the common substrate can be integrated, so that these components can be easily handled.

In the present invention, it is preferable that the first and second flexible substrates are respectively drawn from one end and the other end of the panel facing each other. With this configuration, when the first flexible substrate and the second flexible substrate are connected to the common substrate by the connector, the holder is provided with the first flexible substrate that connects the panel and the common substrate. The substrate and the second flexible substrate are securely held from both sides. Therefore, in the manufacturing process of the electro-optical device, the holder, the panel, and the common substrate can be easily and surely integrated, so that these components can be easily handled.

In this case, as the connector, the first connector is located at a position near one end of the panel.
A first connector for connecting the flexible board to the common board, and a second connector for connecting the second flexible board to the common board at a position near the other end of the panel. Preferably, With this configuration, the first flexible substrate and the second flexible substrate can be shortened. In addition, since the first flexible substrate and the second flexible substrate can be shortened, since the first flexible substrate and the second flexible substrate do not loosen, the holder can be provided with the first flexible substrate and the first flexible substrate. The flexible substrate and the second flexible substrate are securely held from both sides.

In the present invention, a plurality of first electrode patterns extending toward the center from one end and the other end of the panel are formed on the first substrate, and
A plurality of second electrode patterns extending around the outside of the image display area and intersecting with the first electrode pattern in the image display area are formed on the substrate, and the second electrode pattern is A first electrode group extending from one end of the panel in a direction intersecting the first electrode pattern through an outside of the image display area, and a second electrode group extending from the other end of the panel to the image display area. It is preferable that the second electrode group be formed from the other end side second electrode group extending in a direction crossing the first electrode pattern through the outside.

For example, the image display area of the panel is divided into a first image display area on one end side and a second image display area on the other end side.
When the image display area is divided into two, the one end side second
The second electrode pattern belonging to an electrode group extends around the outside of the first image display area in a direction intersecting with the first electrode pattern in the first image display area, and extends on the other end side. It is preferable that the second electrode pattern belonging to the two-electrode group extends around the outside of the second image display area in a direction intersecting with the first electrode pattern in the second image display area. .

With this configuration, the second electrode pattern is formed separately on the first image display area side and the second image display area side, and the second electrode pattern is formed on the image display area. There is no need to concentrate around the specific area outside. Accordingly, the number of the second electrode patterns extending around the outside of the image display area can be reduced in each area even if the number is the same in the entire panel. There is no need to expand the non-display area called the frame area on the outer peripheral side of the area. If the number of electrode patterns is equal, the frame area can be narrowed.

In the present invention, it is preferable that the one end side second electrode group and the other end side second electrode group have the same number of the second electrode patterns. With this configuration, the panel has a structure in which one end and the other end are line-symmetric or point-symmetric, so that the panel can be handled without clearly distinguishing the one end from the other end. it can.
Further, since the same flexible board can be used as the first flexible board and the second flexible board connected to each of the one end and the other end of the panel, the parts to be used can be used. Standardization can be promoted.

In the present invention, a first terminal forming region is formed on each of one end side and the other end side of the first substrate, while a first terminal forming region is formed on one end side and the other end side of the second substrate. A second terminal formation region is formed on each of the plurality of first terminal patterns, and the two first terminal formation regions are connected to each of the first electrode patterns along each substrate side of the first substrate. Each of the first inter-substrate conduction terminals is formed, and a plurality of external terminals to which signals or power are input from the outside are provided in the two second terminal formation regions along each substrate side of the second substrate. Between the input terminal and the first substrate via a conductive material sandwiched between the first substrate and the second substrate in a region adjacent to the external input terminal on the side of the substrate facing the external input terminal; A plurality of second inter-substrate conduction terminals electrically connected to each of the conduction terminals; It is preferable to have been made. Utilizing such inter-substrate conduction, the driving I / O is provided at each of one end and the other end of the second substrate used for the panel.
C on COF (Chip on Flexible)
Tape) or TCP implementation (Tape Carri)
er Package / TAB; Tape Autom
It is possible to easily form a configuration in which the bonded substrates are connected one by one. Also,
The drive IC is mounted on the second substrate by COG (Chip On)
Even if the electro-optical device is a glass electro-optical device, it is sufficient to connect one flexible substrate to each of one end and the other end of the second substrate with respect to the panel. Can be simplified.

In the present invention, for example, all of the first electrode patterns extend so as to connect the one end side and the other end side.

The first electrode pattern includes a first electrode group extending from the one end toward the other end to a position passing through the image display area; And a first electrode group on the other end extending to a position passing through the image display area toward the one end.

Furthermore, the first electrode pattern includes a first electrode group on one end extending from the one end to an intermediate position in the image display area toward the other end;
A second electrode group extending from the other end to the one end side and extending to an intermediate position in the image display area may be formed.

In any case, it is preferable that the one end side first electrode group and the other end side first electrode group have the same number of first electrode patterns.

In the present invention, the first electrode pattern is a data electrode pattern to which image data is supplied, and the second electrode pattern is a scanning electrode pattern to which a scanning signal is supplied.

Such an electro-optical device is preferably used as a display unit of an electronic device, particularly, a display unit of a small electronic device.

[0028]

Embodiments of the present invention will be described with reference to the accompanying drawings.

[Configuration of Electro-Optical Device] (Overall Configuration) FIGS. 1, 2 and 3 are perspective views of the electro-optical device to which the present invention is applied, as viewed from the front side, and as viewed from the back side. 1 is an exploded perspective view of the components used in the electro-optical device when viewed from the front side. FIGS. 4A and 4B are explanatory diagrams showing a state in which pins are lifted and a state in which the flexible substrate is pressed by the pins in the connector used in the electro-optical device shown in FIG. FIGS. 5 and 6 are perspective views of a state in which a panel is mounted in a holder as viewed from the front side, and a view of this state as viewed from the back side in the assembly process of the electro-optical device shown in FIG. It is a perspective view. FIGS. 7 and 8 are perspective views of the state where the common substrate is mounted in the holder when viewed from the back side in the assembling process of the electro-optical device shown in FIG. 1, and FIG. FIG. 5 is a perspective view of a state in which one of them is connected to a common substrate via a connector when viewed from the back side. In the following description, in order to clarify the direction of the electro-optical device, FIG.
FIGS. 2 and 3 show characters corresponding to the time of the wristwatch.

First, as shown in FIGS. 1, 2 and 3, in the electro-optical device 1 of the present embodiment, a rectangular first transparent substrate 10 (first substrate) made of glass or the like and a glass A panel 2 is used in which a rectangular second transparent substrate 20 (second substrate) made of In this panel 2, the second transparent substrate 20 is larger than the first transparent substrate 10 in the 3 o'clock and 9 o'clock directions, so that one end side 2A (in the 9 o'clock direction) of the panel 2 and the other end side 2
In B (3 o'clock direction), both ends of the second transparent substrate 20 project from both ends of the first transparent substrate 10.

In this embodiment, one end 2A of panel 2
And on the other end side 2B, of the second transparent substrate 20,
The first flexible substrate 90A (flexible substrate) on which the driving ICs 7A and 7B are mounted and the second flexible substrate 9 are mounted on the region extending from the first transparent substrate 10.
OB (flexible substrates) are connected from the 9 o'clock direction and the 3 o'clock direction.

The first flexible substrate 90A and the second flexible substrate 90A
The flexible substrate 90B basically has the same shape, and has a planar shape in which the width continuously narrows from the wide connection portion with the panel 2 toward the front end.
Further, in both the first flexible substrate 90A and the second flexible substrate 90B, the driving IC 7
Terminals 901A and 901B are formed on the surface (rear surface) opposite to the side on which A and 7B are mounted (see FIGS. 6 and 7).

The electro-optical device 1 of this embodiment is of a transmission type,
The panel 2 has rectangular polarizers 6 on the front and back sides.
2, 61 are stuck. A light scattering layer 91 is formed on the back side of the panel 2 with respect to the back side of the polarizing plate 62, and a plastic light guide plate 92 and a rectangular shape are formed on the side on which the light scattering layer 91 is formed. Reflective sheet 93
And other optical components are stacked in this order. Here, the light guide plate 92 has a rectangular shape, but a positioning protrusion 921 is formed from the side located on the 6 o'clock side.

In the electro-optical device 1 of the present embodiment, a rectangular common substrate 90 C on which various wiring patterns and terminals are formed is stacked on the back surface of the reflection sheet 93. In the common substrate 90C, a lead portion 901C for external connection protrudes in the direction of 6 o'clock, and a terminal 902C is formed on the surface side of the lead portion 901C.

On the back surface of the common substrate 90C, a plurality of chip-type capacitors 95 are mounted in a central region in the direction of 3 o'clock to 9 o'clock, and an LED chip as a light source for backlight is mounted in the direction of 3 o'clock. 99 are implemented. In addition, two positioning holes 908C and 909C are formed at diagonal positions of the common substrate 90.

Further, on the common substrate 90C, on the 9 o'clock side with respect to the region where the capacitor 95 is mounted,
Flat first connector 9 extended in the direction of 12 o'clock to 6 o'clock
A flat second connector 96B extending long in the 12 o'clock-6 o'clock direction, like the first connector 96A, is also provided on the 3 o'clock direction side with respect to the area where 6A is mounted and the capacitor 95 is mounted. Has been implemented.

(Construction of Connectors) These connectors 96
As shown in FIG. 4 (A), A and 96B are provided with a large number of pins 961 that are integrally held in a floating state (open state) with respect to the elongated frame 960.
When these pins 961 are pressed down, as shown in FIG. 4B, the pins 961 are locked in a state where the flexible boards (the first flexible board 90A and the second flexible board 90B) are held down. (Fit state). Therefore, the terminals 901A and 901C of the flexible substrates 90A and 90B (see FIGS. 7 and 8) are turned downward, and the terminals 9A and 9B of the flexible substrates 90A and 90B are turned down.
Anisotropic conductive sheet (not shown) under 01A and 901C
, All the terminals 901A and 901C of the flexible substrates 90A and 90B are collectively connected to the connector 96.
A and 96B can be electrically connected to each other (not shown). Further, by pushing up the pin 961 from the state shown in FIG. 4B, the pin 961 can be raised as shown in FIG. 4A, so that the flexible substrate (the first flexible substrate 90A and the second Flexible board 90
After connecting B) to the connectors 96A and 96B, the flexible boards (the first flexible board 90A and the second flexible board 90B) can be removed from the connectors 96A and 96B.

(Structure of Holder) Referring again to FIGS. 1, 2 and 3, when the panel 2, the light guide plate 92, the reflection sheet 93, and the common substrate 90C configured as described above are integrated, in this embodiment, a plastic A rectangular frame-shaped holder 6 is used.

When the holder 6 is viewed from the front side, a receiving portion 601 protrudes inward from a substantially central position in the thickness direction of the outer frame portion 600 on the inner peripheral portion of the outer frame portion 600. In the holder 6, positioning walls 604 having an L-shaped planar shape protrude from both corners of the outer frame portion 600 on both the front side and the back side. For this reason, when the holder 6 is viewed from the front side, the optical component mounting portion composed of the surface of the receiving portion 601 inside the positioning wall 604 and the outer frame portion 600 one step higher than the surface of the receiving portion 601 above the positioning wall 604. In this state, the panel mounting portion having the front surface is formed. Further, a slit 65 for positioning the light guide plate is formed between the receiving portion 601 and the outer frame portion 600 in the 3 o'clock direction of the holder 6, and a light source for a backlight is provided at the back of the slit 65. The LED chip 99 mounted on the common substrate 90 </ b> C is located.
Furthermore, small recesses 608 are formed on the surface of the side portion of the outer frame portion 600 located in the 6 o'clock direction to fit the small projections 921 of the light guide plate 92 to define the direction and position of the light guide plate 92. I have.

As will be described later with reference to FIG. 6, when the holder 6 is viewed from the back side, a common substrate mounting portion formed by the back surface of the receiving portion 601 is formed inside the positioning wall 604. In the mounting portion, small projections 661 and 662 for positioning the common substrate 90C at diagonal positions are formed on the back surface of the receiving portion 601. Further, on both sides of the back side of the outer frame portion 600, the substrate receiving portions 671 and 672 that are one step higher than the back surface of the outer frame portion 600 are provided on both sides of the 12 o'clock direction and the 6 o'clock direction. It is formed along.

(Assembling method) Holder thus configured
6, a process of integrating the panel 2, the light guide plate 92, the reflection sheet 93, and the common substrate 90C will be described.

First, in FIG. 3, when the reflection sheet 93 and the light guide plate 92 are stacked in this order inside the holder 6, the reflection sheet 93 and the light guide plate 92 are lowered by one step from the surface of the outer frame portion 600. It is supported on the surface of the receiving portion 601. At this time, one end of the light guide plate 92 is formed as an incident portion of light emitted from the LED chip 99 which is a light source for the backlight, and this end is inserted into the slit 65. At this time, since the small projections 921 of the light guide plate 92 enter the recesses 608 of the holder 6, the light guide plate 92 is fixed at a predetermined position.

Next, when the panel 2 is disposed on the light guide plate 92 so as to be superimposed on the holder 6, the panel 2 is positioned with its corners abutting against the inner surface of the positioning wall 604 and the outer frame portion. 600 supported on the surface. At this time, the outer frame portion 6 of the holder 6 is provided on the lower surface of the panel 2.
A double-sided tape (not shown) is put on a portion of the surface of 00 that overlaps the portions located in the 3 o'clock and 9 o'clock directions, and the panel 2 and the outer frame portion 600 are fixed with the double-sided tape.

When the panel 2 is attached to the holder 6 in this manner, as shown in FIG. 5, the first flexible substrate 90A and the second flexible substrate 90B each have an outer frame portion 600 of the holder 6. And pull it out at 9 o'clock and 3 o'clock.

Next, as shown in FIG. 6, when the holder 6 is turned over and the common substrate 90C is placed on the back side of the holder 6, the positioning holes 908C and 909C of the common substrate 90 are formed as shown in FIG. Small protrusions 661, 66 of holder 6
The common substrate 90 is positioned in the holder 6 by fitting the two. In this state, the lead portion 901C of the common substrate 90C
In the state of being supported by the substrate receiving portion 672, the front end side is pulled out.

Next, the first pulling out of the panel 2
The tip portions of the flexible substrate 90A and the second flexible substrate 90B are, as shown in FIGS. 8 and 2,
They are connected to the first connector 96A and the second connector 96B, respectively.

Here, the length of the first flexible substrate 90A and the length of the second flexible substrate 90B are, as shown in FIGS. 1 and 2, the first flexible substrate 90A and the second flexible substrate 90B. When the first flexible board 90A and the second flexible board 90B are bent at the back side of the holder 6 through the outside of the holder 6 and connected to the first connectors 96A and 96B of the common board 90C, an appropriate force is applied. With holder 6
Is set so that it is held and held from both sides.

(Effect on Substrate Connection Structure) As described above, in the present embodiment, the first flexible substrate 90A
And the second flexible substrate 90B, the panel 2
Are connected via a first connector 96A and a second connector 96B to a common substrate 90C stacked on the back surface side of the. Therefore, on the back side of the panel 2, the first
Flexible substrate 90A and second flexible substrate 9
0B is not required to be soldered to the common substrate 90C.
The problem that the light guide plate 92 and the reflection sheet 93 are damaged can be avoided. In particular, the plastic light guide plate 92 is particularly easily damaged by heat. However, according to this embodiment, since the soldering is not performed, the light guide plate 92 is sandwiched between the panel 2 and the common substrate 90C. Even if the work of connecting the first flexible substrate 90A and the second flexible substrate 90B to the common substrate 90C is performed,
Thus, the problem of damage to the device can be reliably avoided.

Since the connection is made by the first connector 96A and the second connector 96B, the common board 90C
After connecting the first flexible substrate 90A and the second flexible substrate 90B, it is also easy to separate these substrates. Therefore, it is also easy to disassemble the electro-optical device 1 and perform a rework. .

Further, in the present embodiment, the first flexible board 90A and the second flexible board 90B are drawn out from one end 2A and the other end 2B of the panel 2 facing each other. The first flexible substrate 90A and the second flexible substrate 90B reliably hold the device from both sides. Therefore,
In the manufacturing process of the electro-optical device 1, the holder 6, the panel 2, and the common substrate 90C can be easily and surely integrated, so that the handling of these components is easy.

Further, as a connector for connecting the first flexible board 90A and the second flexible board 90B to the common board 90C, the first connector 9 fixed at a position near one end of the panel 2 on the common board 90C.
6A and the second connector 96B fixed at a position near the other end of the panel 2 in the common substrate 90C, the first flexible substrate 90A and the second flexible substrate 90B can be shortened, and The first flexible substrate 90A and the second flexible substrate 90B can be shortened. In addition, since the first flexible board 90A and the second flexible board 90B can be shortened and thus can be prevented from being loosened, the holder 6 is provided with the first flexible board 90A and the second flexible board 90B.
This ensures that it is held from both sides.

(Configuration of Panel Electrodes and Terminals) FIG. 9 is a perspective view showing the arrangement of the panel and optical components used in the electro-optical device shown in FIG. FIG. 10 is an exploded perspective view of a panel used in the electro-optical device. FIG.
FIG. 10 is a cross-sectional view of the end on the I ′ side when the electro-optical device shown in FIG. 9, 10, and 11, the number and magnification of each component are appropriately changed for clarity of the configuration.

Referring to FIGS. 9, 10 and 11, the electro-optical device 1 to which the present invention is applied is a passive matrix type liquid crystal device mounted on an electronic device such as a mobile phone. In this electro-optical device 1, a pair of substrates made of rectangular glass or the like are sealed with a sealing material 30 through a predetermined gap.
To form a panel 2. In this panel 2, a liquid crystal sealed area 35 is defined between the substrates by a sealant 30. When the liquid crystal as the electro-optical material is sealed in the liquid crystal sealing area 35, the liquid crystal sealing area 35 functions as the image display area 3 of the electro-optical device 1.

In the following description, of the pair of substrates,
The substrate on which a plurality of rows of first electrode patterns 40 extending in the vertical direction in the liquid crystal enclosure region 35 are formed in a stripe shape is referred to as a first transparent substrate 10, and the plurality of laterally extending first electrode patterns 40 in the liquid crystal enclosure region 35. The substrate on which the second electrode patterns 50 in the column are formed in a stripe shape is replaced with the second transparent substrate 20.
And

Here, the first transparent substrate 10 has a structure shown in FIG.
As shown in FIG. 3, red (R), green (G), and blue (B) color filters 17R, 17G, and 1G are provided in an area corresponding to an intersection between the first electrode pattern 40 and the second electrode pattern 50.
7B, and these color filters 17R, 17R are formed.
An insulating flattening film 11, a first electrode pattern 40, and an alignment film 12 are formed on the surface sides of G and 17B.
On the other hand, the second electrode pattern 50 and the alignment film 22 are formed on the second transparent substrate 20.

Referring again to FIGS. 9 and 10, the electro-optical device 1 of this embodiment is of a transmission type, and FIGS.
As described with reference to, the polarizing plate 61 is stuck on the outer surface of the first transparent substrate 10, and the polarizing plate 62 is stuck on the outer surface of the second transparent substrate 20. Outside the second transparent substrate 20, a light scattering layer 91 is formed, and a light guide plate 92 for a backlight and a reflection sheet 93 are arranged in this order.

In the electro-optical device 1, in the present embodiment, the image display area 3 has a first image display area 3A corresponding to one end 2A of the panel 2 and a second image display area 3A corresponding to the other end 2B.
The image display area 3B is divided into two, but a clear boundary is not formed so that the two image areas 2A and 2B are integrally displayed as one image.

In constructing the electro-optical device 1, the first transparent substrate 10 has a first electrode pattern 40.
Is in a state of extending vertically from the one end side 2A and the other end side 2B of the panel 2 toward the center, and the first electrode pattern 40 includes a first image display area 3A and a second image display area. The first transparent substrate 10 is formed to connect the substrate sides 101 and 102 through the region 3B.

On the other hand, on the second transparent substrate 20, the second electrode pattern 50 is
A, one end-side second electrode group 50A that extends around the outside of the image display area 3 and intersects the first electrode pattern 50 in the image display area 3 in the horizontal direction, and the other end side of the panel 2 The second electrode group 50 </ b> B extends in the lateral direction so as to wrap around the outside of the image display area 3 from 2 </ b> B and cross the first electrode pattern 50 in the image display area 3.

Here, the one end side second electrode group 50A and the other end side second electrode group 50B may be mixed, but in this embodiment, the first end side second electrode group 50A belonging to the one end side second electrode group 50A. The second electrode pattern 50 extends around the outside of the first image display area 3A from one end side 2A of the panel 2 and extends so as to intersect the first electrode pattern 50 in the first image display area 3A. The second electrode pattern 50 belonging to the end-side second electrode group 50B wraps around the outside of the second image display area 3B from the other end side 2B of the panel 2 and the first electrode pattern 50 in the second image display area 3B. It extends so as to intersect with the pattern 50.

In this embodiment, the number of the second electrode patterns 50 is equal between the one end side second electrode group 50A and the other end side second electrode group 50B. The area outside the image display area 3 here corresponds to the frame area 8 shown in FIG.

In the panel 2 configured as described above, both the signal input from the outside and the conduction between the substrates are applied to the substrate sides 101 located in the same direction on the first transparent substrate 10 and the second transparent substrate 20. , 102, 201, 2
It is performed near 02. However, panel 2 has one end 2A.
And the other end 2B are formed in line symmetry, and the second electrode pattern 5 is formed on one end 2A and the other end 2B of the panel 2.
0 are grouped into one end side second electrode group 50A and the other end side second electrode group 50B which are independent from each other. For this reason, in this embodiment, one end side 2A of panel 2 and the other end side 2A
B, two first terminal formation regions 11A and 11B are formed on the first transparent substrate 10 so that signal input from outside and conduction between the substrates can be performed in both of the first and second transparent substrates 20. Are two second terminal formation regions 21A, 21A
B is formed.

Here, as the second transparent substrate 20, a substrate larger than the first transparent substrate 10 is used, and when the first transparent substrate 10 and the second transparent substrate 20 are bonded, The driving IC 7 is formed by using a portion where the second transparent substrate 20 projects from the substrate sides 101 and 102 of the transparent substrate 10.
Flexible boards 90A and 90B on which A and 7B are mounted
Connection is made.

With respect to such an electrical connection structure, in this embodiment, the one end 2A and the other end 2B of the panel 2 have the same structure. So, first, Panel 2
The structure of one end 2A will be described in detail.
The structure of B will be briefly described.

First, at one end 2 A of the panel 2,
The second terminal formation region 21A of the second transparent substrate 20 has a portion near the substrate side 201 formed near a portion 25A protruding from the first transparent substrate 10 and a surface of the terminal region near the substrate side 201. Is open.

On the other hand, the second terminal formation region 21A
Of these, the portion located on the side of the liquid crystal sealing area 35 is the first
Is used for conduction between the substrate and the transparent substrate 10 side, so that the portion located on the side of the liquid crystal sealing region 35 is the first
Is formed in a portion overlapping with the transparent substrate 10.

In the first transparent substrate 10, the first
The terminal formation region 11 </ b> A is used for conduction between the substrate and the second transparent substrate 20, and thus is formed in a portion overlapping with the second transparent substrate 20.

In the first transparent substrate 10, the first terminal formation region 11 A is formed on the substrate side 101 of the first transparent substrate 10.
Is formed along the substrate side 101 in the center portion (the central region in the width direction of the first transparent substrate 10). In the first terminal formation region 11A, a plurality of first substrates are formed along the substrate side 101. The conduction terminals 60A are arranged at a predetermined interval. The first inter-substrate conduction terminal 60A extends linearly toward the opposing substrate side 102, and
After a plurality of rows of first electrode patterns 40 slightly diagonally extend to both sides from the inter-substrate conduction terminal 60A, the first electrode patterns 40 extend in a direction orthogonal to the substrate sides 101 and 102 in the liquid crystal sealing region 35.

In the second transparent substrate 20, the second terminal formation region 21A is formed along the substrate side 201. The second terminal formation region 21A is formed over a relatively wide range excluding both ends of the substrate side 201.
In the second terminal formation region 21A, a plurality of first external input terminals 81A are formed at predetermined intervals in the center region along the substrate side 201, and in both side regions, along the substrate side 201. A plurality of second external input terminals 82A are formed at predetermined intervals as described above. Here, the first external input terminal 81A and the second external input terminal 82A extend linearly toward the opposing substrate side 202 in the second terminal formation region 21A.

From the first external input terminal 81A, when the first transparent substrate 10 and the second transparent substrate 20 are bonded to each other, a plurality of second overlapping terminals overlap the first inter-substrate conduction terminals 60A.
The terminal 70 </ b> A for inter-substrate conduction linearly extends toward the substrate side 202.

From the second external input terminal 82, the outside of the region overlapping the region where the first electrode pattern 40 is formed when the first transparent substrate 10 and the second transparent substrate 20 are bonded to each other is planar. Area (outside the image display area 3 / frame area 8)
, A plurality of rows of liquid crystal driving second electrode patterns 50 belonging to the one end side second electrode group 50A extend so as to extend around the outside of the first image display region 3A, and these second electrodes The pattern 50 extends so as to intersect with the first electrode pattern 40 in the liquid crystal sealing area 35. That is, the second electrode belonging to the one end side second electrode group 50A
The electrode pattern 50 extends obliquely toward both sides in each area corresponding to both sides of the first image display area 3A, and then extends to the first side.
Along the image display area 3A, and linearly extends toward the opposing substrate side 202, and then bends at a predetermined position to extend in parallel with the substrate sides 201 and 202 in the first image display area 3A. Accordingly, the first electrode pattern 40 is orthogonal to the first electrode pattern 40 in the first image display area 3A.

On the other hand, on the other end 2 B of the panel 2, the second terminal formation region 21 of the second transparent substrate 20 is formed.
B is formed in the vicinity of a portion 25B where a portion near the substrate side 202 protrudes from the first transparent substrate 10, and the substrate side 2
The surface of the terminal region near 02 is open. On the other hand, in the second transparent substrate 20, the portion of the second terminal formation region 21 </ b> B located on the liquid crystal enclosing region 35 side is used for inter-substrate conduction with the first transparent substrate 10 side. Therefore, the portion located on the side of the liquid crystal sealing region 35 is formed in a portion overlapping with the first transparent substrate 10. In the first transparent substrate 10, the first terminal formation region 11 </ b> B is used for electrical conduction between the second transparent substrate 20 and the second transparent substrate 20. ing.

In the first transparent substrate 10, the first terminal formation region 11 B is located on the substrate side 102 of the first transparent substrate 10.
Are formed along the substrate side 102 at the center portion (the central region in the width direction of the first transparent substrate 10), and in the first terminal formation region 11B, a plurality of first substrates are formed along the substrate side 10B. The conduction terminals 60B are arranged at a predetermined interval. The first electrode pattern 40 extends slightly obliquely on both sides from the first inter-substrate conduction terminal 60B, and then extends in the liquid crystal sealing region 35 in a direction orthogonal to the substrate sides 101 and 102.

On the second transparent substrate 20, a plurality of first external input terminals 81B are formed in a central area of the second terminal forming area 21B, and a plurality of second input terminals 81B are formed on both sides thereof.
The external input terminal 82B is formed. From the first external input terminal 81B, a plurality of second inter-substrate conduction terminals overlapping with the first inter-substrate conduction terminals 60B when the first transparent substrate 10 and the second transparent substrate 20 are bonded to each other. Terminal 70
B extends linearly toward the substrate side 201. Second
From the external input terminal 82B, when the first transparent substrate 10 and the second transparent substrate 20 are bonded together, when the first transparent substrate 10 and the second transparent substrate 20 are bonded together, In the outside area (outside of the image display area 3 / frame area 8) outside the area that overlaps the formation area of the first electrode pattern 40 in a plane, the second end side second side is arranged to go around the outside of the second image display area 3B. A plurality of rows of liquid crystal driving second electrode patterns 50 belonging to the electrode group 50B extend, and these second electrode patterns 50 intersect with the first electrode patterns 40 in the liquid crystal sealing region 35. Extending.

In forming the electro-optical device 1 using the first transparent substrate 10 and the second transparent substrate 20 configured as described above, in the present embodiment, the first transparent substrate 10 and the second transparent substrate 20 are used. When bonding the first and second substrates through the sealing material 30, the sealing material 30 is mixed with a gap material and a conductive material, and the sealing material 30 is connected to the first inter-substrate conductive terminals 60A and 60B and the second substrate. Terminal 7 for conduction between
It is also formed in a region where 0A and 70B overlap. Here, the conductive material included in the sealing material 30 is, for example, particles obtained by plating the surface of elastically deformable plastic beads, and the particle size is about 6.6 μm. On the other hand, the particle diameter of the gap material included in the sealing material 30 is about 5.6 μm.
It is. Therefore, when the sealing material 30 is melted and cured while applying a force to narrow the gap in a state where the first transparent substrate 10 and the second transparent substrate 20 are overlapped, the conductive material becomes
The first inter-substrate conduction terminals 60A, 60B are crushed between the first transparent substrate 10 and the second transparent substrate 20.
And the second inter-substrate conduction terminals 70A, 70B.

Further, when the first transparent substrate 10 and the second transparent substrate 20 are bonded together via the sealing material 30, the first transparent substrate
Pixels are formed in a matrix at intersections between the electrode patterns 40 and the second electrode patterns 50. For this reason, the second terminal formation region 21A of the second transparent substrate 20,
The first and second flexible substrates 90A and 90B are mounted on the ends of the 21B on the side of the substrate sides 201 and 202 using an anisotropic conductive material or the like, and then driven via these flexible substrates 90A and 90B. When signals are input from the external ICs 7A and 7B to the external input terminals 81A, 81B, 82A and 82B, a scanning signal can be applied to the second electrode pattern 50, and the first electrode pattern 40 Image data can be signal-input via the second inter-substrate conduction terminals 70A and 70B, the conduction material, and the first inter-substrate conduction terminals 60A and 60B. Accordingly, the alignment state of the liquid crystal positioned between the first electrode pattern 40 and the second electrode pattern 50 in each pixel can be controlled by the image data and the scanning signal, so that a predetermined image can be displayed. can do.

(Effect of Electrode / Terminal Structure) As described above, in the electro-optical device 1 according to the present embodiment, the second electrode pattern 50 extends around the first image display area 3A from one end side 2A of the panel 2. One end side second electrode group 50A extending into first image display area 3A, and other end side 2 of panel 2
B and the other end-side second electrode group 50B extending around the second image display area 3B and extending into the second image display area 3B. Therefore, the second electrode pattern 5
0 are dispersedly formed on the first image display area 3A side and the second image display area 3B side, and the second electrode pattern 50 is formed.
There is no need to concentrate on a specific area and route it. Therefore, the second electrode pattern 50 extending outside the image display area 3
Can be reduced in each region even if the number is the same in the entire panel 2. Therefore, even when the number of the second electrode patterns 50 is increased, the frame region 8 on the outer peripheral side of the image display region 3. There is no need to spread. Also,
If the number of the second electrode patterns 50 is equal, the frame region 8
Can be narrowed.

In the panel 2, the one end side second electrode group 50A and the other end side second electrode group 50B have the same number of the second electrode patterns 50. Has a line-symmetric structure. Therefore, the panel 2 can be handled without clearly distinguishing the one end 2B and the other end 3B. In addition, there is an advantage that flexible boards 90A and 90B to be connected to the panel 2 can have the same specifications.

[Other Embodiments] In the above embodiment, all the first electrode patterns 40 extend so as to connect the one end 2A and the other end 2B. As shown in FIG. 12, the first electrode pattern 4
Regarding 0, one end first electrode group 40A extending from the one end 2A to the other end 2B to a position passing through the image display area 3, and an image extending from the other end 2B to the one end 2A. The other end side first electrode group 40 </ b> B extending to a position passing through the display area 3 may be alternately formed. Other configurations are the same as those described with reference to FIG. 10, and thus common portions will be denoted by the same reference numerals and illustration thereof will be omitted.

As shown in FIG. 13, the first electrode pattern 40 is located at an intermediate position in the image display area 3 from one end 2A to the other end 2B (the first pixel area 3B).
One end side first electrode group 40A extending up to a boundary position between the first end side A and the second pixel region 3B), and the other end side 2B to the one end side 2B.
A first electrode group 40B on the other end extending to an intermediate position (a boundary position between the first pixel region 3A and the second pixel region 3B) in the image display region 3 toward A. You may. Other configurations are the same as those described with reference to FIG. 10, and thus common portions will be denoted by the same reference numerals and illustration thereof will be omitted.

Further, in the above embodiment, both the first electrode pattern 40 and the second electrode pattern 50 are provided with image data from the driving ICs 7A and 7B mounted on the flexible substrates 90A and 90B by COF or TCP. Or, the scanning signal is applied, but the second
Electro-optical device 1 configured to apply image data or scanning signals from a driving IC mounted on a transparent substrate 20 by COG
However, the present invention can be applied.

Further, in the above embodiment, the connectors 96A and 96B are mounted on the common board 90C, and the flexible boards 90A and 90B are connected thereto. However, the connectors are mounted on the flexible boards 90A and 90B. , A common substrate may be connected thereto.

[Specific Example of Electronic Apparatus] FIG.
(B) and (C) are external views of an electronic apparatus using the electro-optical device 1 to which the present invention is applied.

First, FIG. 14A is an external view of a mobile phone. In this figure, reference numeral 1000 denotes a mobile phone main body, and reference numeral 1001 denotes an image display device using the electro-optical device 1 to which the present invention is applied.

FIG. 14B is an external view of a wristwatch-type electronic device. In this figure, reference numeral 1100 denotes a watch main body, and reference numeral 1101 denotes an image display device using the electro-optical device 1 to which the present invention is applied.

FIG. 14C is an external view of a portable information processing apparatus such as a word processor or a personal computer. In this figure, reference numeral 1200 denotes an information processing device, 1202 denotes an input unit such as a keyboard, 1206 denotes an image display device using the electro-optical device 1 to which the present invention is applied, and 1204 denotes an information processing device main body.

[0087]

As described above, in the electro-optical device according to the present invention, the first flexible substrate and the second flexible substrate connected to the panel are overlapped on the back surface of the panel. Connected to the common board via a connector. Therefore, it is not necessary to solder the first flexible substrate and the second flexible substrate to the common substrate on the rear surface side of the panel, so that the panel is damaged by heat and pressure during soldering. Problem can be avoided. Also, since the connection is made by a connector, the common substrate Z and the first
After connecting the flexible substrate and the second flexible substrate,
Since it is easy to separate these substrates, it is also easy to disassemble the electro-optical device and carry out rework.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electro-optical device to which the present invention is applied when viewed from a front surface side.

FIG. 2 is a perspective view when the electro-optical device shown in FIG. 1 is viewed from the back side.

FIG. 3 is an exploded perspective view of each component used in the electro-optical device shown in FIG. 1 when viewed from the front side.

FIGS. 4A and 4B are open states in which pins are lifted in the connector used in the electro-optical device shown in FIG. 1;
FIG. 4 is an explanatory view showing a fitted state in which the flexible board is pressed down with the pins.

FIG. 5 shows an assembly process of the electro-optical device shown in FIG.
It is the perspective view when the state which attached the panel in the holder was seen from the surface side.

FIG. 6 shows an assembly process of the electro-optical device shown in FIG.
It is the perspective view when the state which attached the panel in the holder is seen from the back side.

FIG. 7 shows an assembly process of the electro-optical device shown in FIG.
It is the perspective view when the state where the common substrate was attached in the holder was seen from the back side.

FIG. 8 shows an assembly process of the electro-optical device shown in FIG.
FIG. 11 is a perspective view of a state in which one of two flexible substrates is connected to the common substrate via a connector after the common substrate is mounted in the holder, as viewed from the back side.

FIG. 9 is a perspective view showing a state where optical components are overlaid on a panel used in the electro-optical device shown in FIG.

FIG. 10 is an exploded perspective view of a panel used in the electro-optical device shown in FIG.

11 is a sectional view of an end on the I ′ side when the electro-optical device shown in FIG. 1 is cut along a line II ′ in FIG. 9;

FIG. 12 is an exploded perspective view of a panel used in another electro-optical device to which the invention is applied.

FIG. 13 is an exploded perspective view of a panel used in still another electro-optical device to which the present invention is applied.

FIGS. 14A, 14B, and 14C are external views of electronic devices using an electro-optical device to which the present invention is applied.

FIG. 15 is a perspective view of a conventional electro-optical device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electro-optical device 2 Panel 2A One end side of panel 2B The other end side of panel 3 Image display area 3A First image display area 3B Second image display area 4 Liquid crystal (electro-optical material) 6 Holder 7A, 7B For driving IC 8 frame area 10 first transparent substrate 11A, 11B first terminal formation area 17R, 17G, 17B color filter 20 second transparent substrate 21A, 21B second terminal formation area 25A, 25B of second transparent substrate Overhanging part 30 Sealing material 35 Liquid crystal sealing area 40 First electrode pattern 40A One end first electrode group 40B Other end first electrode group 50 Second electrode pattern 50A One end second electrode group 50B Other end first Two-electrode group 60A, 60B First inter-substrate conduction terminal 61, 62 Polarizing plate 70A, 70B Second inter-substrate conduction terminal 81A, 81 First external input terminal 82A, 82B Second external input terminal 90A First flexible substrate (first flexible substrate) 90B Second flexible substrate (second flexible substrate) 91 Light scattering Layer 92 Light guide plate 93 Reflective sheet 95 Capacitor 96A First connector 96B Second connector 99 LED chip (light source for backlight) 101, 201, 102, 202 Substrate side 600 Holder outer frame portion 601 Holder receiving portion 604 Holder positioning wall 608 Holder positioning recess 661, 662 Holder positioning small protrusion 671, 672 Holder substrate receiving portion 901A, 901B Flexible substrate terminal 901C Common substrate lead portion 902C Lead portion terminal 908C, 909C Positioning hole 960 Connector frame 961 Connector Pins

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H05K 1/14 H05K 1/14 HF term (Reference) 2H089 HA40 JA10 KA17 QA02 QA06 QA09 TA03 TA07 TA20 2H092 GA33 GA41 GA50 GA52 NA30 PA06 PA13 5E344 AA10 AA12 BB03 BB04 CD20 EE30 5G435 AA00 AA19 BB12 EE36 EE47 FF05 GG12 KK05 LL07 LL08

Claims (17)

[Claims] 1. A panel in which an electro-optical material is held between a pair of substrates, first and second flexible substrates each drawn out of the panel in different directions, and stacked on the back side of the panel. An electro-optical device, wherein the first and second flexible substrates bent from the panel to the back side so as to cover the common substrate are connected to the common substrate. An electro-optical device, wherein the common substrate and the first and second flexible substrates are connected via a connector. 2. The electro-optical device according to claim 1, wherein the connector is mounted on the common substrate. 3. The electro-optical device according to claim 1, wherein an optical component is interposed between the panel and the common substrate. 4. The optical component according to claim 3, wherein:
An electro-optical device comprising a light guide plate. 5. The method according to claim 1, wherein
A frame-shaped holder for holding the panel and the common substrate on the front side and the back side, respectively, wherein the first and second flexible substrates pass outside the holder from the front side of the holder; An electro-optical device which is bent to the back side of the holder and connected to the common substrate via the connector. 6. The method according to claim 1, wherein
The electro-optical device according to claim 1, wherein the first and second flexible substrates are respectively drawn from one end side and the other end side of the panel facing each other. 7. The panel according to claim 6, wherein the connector is a first connector that connects the first flexible board and the common board at a position near one end of the panel, and the other end of the panel. An electro-optical device comprising: a second connector that connects the second flexible board and the common board at a position closer to the board. 8. The first substrate according to claim 6, wherein a plurality of first electrode patterns extending toward the center from one end and the other end of the panel are formed on the first substrate. A plurality of second electrode patterns extending around the outside of the image display area and intersecting with the first electrode pattern in the image display area; and forming the second electrode pattern on the second substrate. A first electrode group extending from one end of the panel in a direction intersecting the first electrode pattern through an outside of the image display area; and an image display area extending from the other end of the panel. Second end second side extending in a direction crossing the first electrode pattern through the outside of
An electro-optical device, comprising: an electrode group. 9. The device according to claim 8, wherein the image display area of the panel is divided into a first image display area on the one end side and a second image display area on the other end side. The second electrode pattern belonging to the side second electrode group,
The second electrode pattern which extends around the outside of the first image display area in a direction intersecting with the first electrode pattern in the first image display area, and which belongs to the other end side second electrode group, An electro-optical device extending around the outside of the second image display area in a direction intersecting with the first electrode pattern in the second image display area. 10. The method according to claim 8, wherein
A first terminal formation region is formed on each of one end side and the other end side of the substrate, while a second terminal formation region is formed on each of one end side and the other end side of the second substrate. In the two first terminal formation regions, a plurality of first inter-substrate conduction terminals connected to each of the first electrode patterns are respectively provided along each substrate side of the first substrate. A plurality of external input terminals to which a signal or power is input from the outside along each substrate side of the second substrate; Electrically connected to each of the first inter-substrate conduction terminals via a conduction material sandwiched between the first substrate and the second substrate in regions adjacent to each other on the side of the substrate facing each other. Multiple second
And an inter-substrate conduction terminal. 11. The electric device according to claim 8, wherein the one end second electrode group and the other end second electrode group have the same number of the second electrode patterns. Optical device. 12. The electro-optical device according to claim 8, wherein all of the first electrode patterns extend so as to connect the one end side and the other end side. . 13. The first electrode pattern according to claim 8, wherein the first electrode pattern extends from the one end toward the other end to a position passing through the image display area. An electro-optical device comprising: one electrode group; and a first electrode group on the other end extending from the other end to a position passing through the image display area toward the one end. 14. The first electrode pattern according to claim 8, wherein the first electrode pattern extends from the one end to an intermediate position in the image display area from the one end to the other end. An electro-optical device comprising: an electrode group; and a first electrode group on the other end extending from the other end to an intermediate position in the image display area toward the one end. 15. The electro-optical device according to claim 13, wherein the one end side first electrode group and the other end side first electrode group have the same number of the first electrode patterns. 16. The scanning method according to claim 8, wherein the first electrode pattern is a data electrode pattern to which image data is supplied, and the second electrode pattern is a scanning electrode to which a scanning signal is supplied. An electro-optical device having an electrode pattern. 17. An electronic apparatus comprising the electro-optical device according to claim 1 as a display unit.