JP2983470B2 - Electro-optical device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electro-optical device for displaying various information using an electro-optical material such as a liquid crystal.

[0002]

2. Description of the Related Art Conventionally, an electro-optical device using an electro-optical material such as a liquid crystal has been frequently used for displaying various information.

As an example of such an electro-optical device, FIGS. 4 to 6 show the structure of a liquid crystal display device. In FIG.
Reference numeral 1 denotes a lower substrate on which predetermined display electrodes 2a, 2b,..., 2e are formed in accordance with a display pattern. Further, terminal electrodes 3a, 3b,..., 3e extending from the display electrodes 2a, 2b,..., 2e are arranged at the ends of the lower substrate 1, and these terminal electrodes 3a, 3b,. , 3e are provided with opposed terminal electrodes 4 at the ends. In the figure, reference numeral 5 denotes a conductive adhesive, and reference numeral 6 denotes a seal spacer.

An upper substrate 7 as shown in FIG. 5 is disposed above the lower substrate 1 configured as described above. A counter electrode 8 is formed on the upper substrate 7 so as to face the display electrodes 2a, 2b,.
At an end of the upper substrate 7, a short-circuit terminal electrode 9 drawn from the counter electrode 8 is provided.

[0006] As shown in FIG. 6, the lower substrate 1 and the upper substrate 7 are arranged facing each other with a predetermined distance therebetween via a seal spacer 6, and a liquid crystal 10 is sealed therebetween. Polarizing plates 11 are arranged outside the lower substrate 1 and the upper substrate 7, respectively, and any display electrodes 2a, 2b,.
A required pattern is displayed by applying a voltage between e and the counter electrode 8.

In addition, the short-circuit terminal electrode 9 is made of a conductive adhesive 5
Thus, it is electrically connected to the counter terminal electrode 4, and is connected to a terminal electrode of an external drive electronic circuit via the counter terminal electrode 4. By arranging the terminal electrodes 3a, 3b,..., 3e and the opposing terminal electrode 4 in this manner, the electric connection with the driving electronic circuit can be easily performed. Note that the conductive adhesive 5 is disposed outside the seal spacer 6 where no liquid crystal 10 exists, in order to avoid display defects due to the influence of the electric field.

[0007]

The electro-optical device described above is often used by being housed in various devices.
As for various devices, miniaturization of the devices is being promoted.
It is desired that the size of the electro-optical device be further reduced without reducing the area of the pattern display surface.

The present invention has been made in view of such a conventional situation, and will provide an electro-optical device capable of reducing the size of the device as compared with the conventional device without reducing the area of the pattern display surface. It is assumed that.

[0009]

That is, the present invention provides:
(A) a first substrate and a surface on one surface of the first substrate;
A plurality of display electrodes arranged according to the display pattern;
The display electrodes arranged on a side of one surface of the first substrate
A plurality of terminal electrodes connected to the
Substrate provided with a counter terminal electrode disposed on the side
(B) removing the side where the terminal electrodes are arranged;
Second substrate disposed opposite to the electrode forming surface of the first substrate
And a surface of the second substrate facing the first substrate
An opposing common electrode, and an electric
Connected to the opposite terminal electrode of the lower electrode.
An upper substrate having a short-circuit terminal electrode disposed
(C) a rectangle interposed between the lower substrate and the upper substrate
A frame-shaped seal spacer, and (d) an opposite end of the lower substrate.
Between the secondary electrode and the short-circuit terminal electrode of the upper substrate.
And a short-circuit material for electrically connecting them.
A voltage is applied between the terminal electrodes and the terminal electrodes.
(E) the seal space
A concave part is formed by recessing the outer edge toward the inside in a part of the
And the short-circuit material is disposed in the recess.
It is characterized by.

[0010]

When the area (capacity) of the device accommodating the electro-optical device in the direction of the pattern display surface is small, the area of the upper substrate and the lower substrate must be reduced. In this case, the area of the pattern display surface is not changed. Then, the area of the outer portion of the seal spacer must be reduced.
However, in the above-described conventional electro-optical device, since the conductive adhesive which is a short-circuit material is provided on the outer portion of the seal spacer, there is a limit in reducing the area of the substrate on the short-circuit side provided with the conductive adhesive. .

Therefore, in the electro-optical device according to the present invention, a recess is formed in the seal spacer, and a short-circuit member is disposed in the recess. As a result, the position of the short-circuiting material can be arranged closer to the center of the electrode plate, and the area outside the seal spacer can be reduced. Therefore, the area of the pattern display surface can be reduced without reducing the area of the pattern display surface. The size can be reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the electro-optical device according to the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a main part of an embodiment of the present invention. In FIG. 1, reference numeral 21 denotes a lower substrate.
Display electrodes 22a, 22 made of a transparent conductive film such as indium oxide are formed on the lower substrate 21 in accordance with the display pattern.
.., 22e are formed. Further, display electrodes 22a, 22b,
, 22e, terminal electrodes 23a, 23b,
, 23e are arranged, and these terminal electrodes 23
The opposite terminal electrodes 24 are provided at the ends of the rows a, 23b,..., 23e.

On the other hand, in FIG. 2, reference numeral 27 denotes an upper substrate, on which an opposing common electrode 28 made of a transparent conductive film such as indium oxide is formed. At the end of the upper substrate 27, a terminal electrode 29 for short-circuiting, which is drawn from the common electrode 28, is provided.

The display electrodes 22a, 22b...
An alignment film (not shown) is formed on the surfaces of the common electrode 22 e and the common electrode 28 . The alignment film is formed, for example, by applying a polyimide film, rubbing the surface of the polyimide film in one direction with a cloth or the like, and performing an alignment treatment.

These lower substrate 21 and upper substrate 27
Are the display electrodes 22a, 22b,... As shown in FIG.
, 22e and the opposed common electrode 28 are opposed to each other.
The rubbing directions are orthogonal to each other, and a rectangular frame-shaped seal spacer 26 is provided so as to support them at a predetermined interval. The sill spacer 26 is made of epoxy resin or the like, and a recess 26a is formed in a portion where the opposing terminal electrode 24 and the short-circuiting terminal electrode 29 are arranged so that the outer edge portion is recessed inward. .

A conductive adhesive (conductive paste) 25 as a short-circuit material is disposed so that at least a part thereof is disposed in the concave portion 26a. The terminal electrode 29 and the opposite terminal electrode 24 are electrically connected.

In a space surrounded by the lower substrate 21, the upper substrate 27, and the seal spacer 26, a liquid crystal 30 is provided.
Are enclosed, and a polarizing plate 31 is disposed outside each of the lower substrate 21 and the upper substrate 27. Then, a terminal electrode 23 is supplied from an external driving electronic circuit (not shown).
a, 23b, ......, 23e and opposed arbitrary display through the terminal electrodes 24 electrodes 22a, 22b, ......, 22e pair
A required pattern is displayed by applying a voltage to the common electrode 28 .

In the electro-optical device according to the present embodiment, the terminal electrodes 23a, 23b,..., 23e and the opposing terminal electrode 24 are arranged in a concentrated manner, so that electrical connection with the driving electronic circuit can be easily performed. It is configured to be able to do so.

Since the conductive adhesive 25 for electrically connecting the short-circuit terminal electrode 29 and the counter terminal electrode 24 is disposed in the recess 26a provided in the seal spacer 26, FIG. The distance A between the outside of the seal spacer 26 and the end of the lower substrate 21 shown in FIG. 6 can be made shorter than the distance B in the case of the conventional electro-optical device shown in FIG.
The area of the lower substrate 21 (and the upper substrate 27) outside the seal spacer 26 can be reduced. This makes it possible to reduce the size of the device without reducing the area of the pattern display surface, as compared with the conventional case. For example, the device can be housed in a housing for a display device such as a personal computer or word processor having a smaller capacity than in the conventional case. It is possible to do.

In the embodiment shown in FIG. 1, the electro-optical device has been described in which the seal spacer is formed with a recess in which a part of the outer edge is recessed inward. However, the present invention is not limited to this, and it is needless to say that a desired effect of the present invention can be obtained even in an electro-optical device in which a recessed portion is formed that extends to the inside of the seal spacer.

[0023]

As described above, according to the electro-optical device of the present invention, the size of the device can be reduced as compared with the conventional device without reducing the area of the pattern display surface.

[Brief description of the drawings]

FIG. 1 is a diagram showing a main configuration of an electro-optical device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a main configuration of an electro-optical device according to an embodiment of the invention.

FIG. 3 is a diagram illustrating a main configuration of an electro-optical device according to an embodiment of the invention.

FIG. 4 is a diagram showing a main configuration of a conventional electro-optical device.

FIG. 5 is a diagram showing a configuration of a main part of a conventional electro-optical device.

FIG. 6 is a diagram showing a configuration of a main part of a conventional electro-optical device.

[Explanation of symbols]

21 Lower substrate 22a to 22e Display electrode 23a to 23e Terminal electrode 24 Counter terminal electrode 25 Short circuit material (conductive adhesive: conductive paste) 26 Seal seal (epoxy resin) 27 Upper substrate 28 Counter-common electrode 29 Short-circuit terminal electrode 30 Liquid crystal 31 Polarizing plate

Claims (1)

(57) [Claims] (A) a first substrate and a first substrate
Multiple tables arranged according to the display pattern on one surface
Indicator electrodes, and arranged on a side of one surface of the first substrate.
A plurality of terminal electrodes connected to the display electrode,
And the opposite terminal electrode arranged on the side where the sub-electrodes are arranged.
(B) removing the side where the terminal electrodes are arranged from the first substrate;
A second substrate facing the electrode forming surface of the first substrate;
The second substrate is disposed on a surface of the second substrate facing the first substrate.
And the electrical connection with the opposed common electrode
Connected to a position corresponding to the opposite terminal electrode of the lower electrode.
An upper substrate having a short-circuit terminal electrode disposed thereon; and (c) a rectangle interposed between the lower substrate and the upper substrate.
A frame-shaped sealing spacers, (d) and the counter terminal electrode of the lower substrate upper substrate short of
Between the ground terminal electrode and
A short-circuit material for applying a voltage between the opposite terminal electrode and the terminal electrode.
In the configuration and the electro-optical device comprising cormorants, toward the outer edge to the inside part of (e) said seal spacer
Is formed, and the short-circuit is formed in the recess.
An electro-optical device, wherein a material is provided.