JPH10239689A - Substrate for liquid crystal display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a substrate for liquid crystal display panel having such a structure that broken pieces of an organic alignment layer are hardly stuck to a recognition mark at the time of rubbing treatment. SOLUTION: With respect to the substrate for liquid crystal display panel where an inorganic insulating film 3 is formed on one face of a substrate main body 2 and an organic alignment layer 4 is formed on this inorganic insulating film 3 and a recognition mark 6 is formed on a part of one face of the substrate main body 2, a wall body 10 is formed around the recognition mark to prevent the recognition mark 6 from being rubbed with a rubbing treatment body 8 at the time of rubbing treatment when the surface of the organic alignment layer 4 is rubbed with the rubbing treatment body 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display panel substrate which is a component of a liquid crystal display panel.

[0002]

2. Description of the Related Art A liquid crystal display panel has a structure in which a cell is formed between a pair of substrates and a liquid crystal is sealed in the cell. The substrate 1 has an inorganic insulating film 3 formed on one surface of a glass plate 2 as a substrate body, as shown in FIG.
An organic alignment film 4 is formed thereon, and the organic alignment film 4 is rubbed with a cloth and rubbed to provide a component of a liquid crystal display panel.

Since the substrate 1 is formed on one side of the glass plate 2, it is necessary to recognize the front and back sides and to assemble the cells. For this reason, as shown in FIG. 3A, a transparent electrode as a recognition mark is provided in an area 5 of a 6 to 10 mm square where neither the inorganic insulating film 3 nor the organic alignment film 4 is provided at one corner of the substrate 1. 6 is provided at the time of the film formation. The size of the transparent electrode 6 is 0.05 in diameter.
mm.

The surface of the glass plate 2 on which the inorganic insulating film 3, the organic alignment film 4, and the transparent electrode 6 are formed is rubbed with a cloth to perform a rubbing process, thereby forming a liquid crystal display panel. To unify the directions.

When assembling a liquid crystal display panel using the rubbed substrate 1, as shown in FIG. 3, the camera 1 images the substrate 1 to binarize the image, and recognizes the image from the binarized image. The position of the substrate 1 is determined by determining the presence or absence of the transparent electrode 6 as a mark.

[0006]

In such a conventional structure, the bristles 9 of the cloth 8 rubbing the surface of the organic alignment film 4 during the rubbing treatment as shown in FIG. 6, fragments of the organic alignment film 4 attached to the hairs 9 of the cloth 8 adhere to the surface of the transparent electrode 6.

When the fragments of the organic alignment film 4 adhere to the surface of the transparent electrode 6, the transparent electrode 6
Cannot be recognized by the camera 7, and the determination of the position of the substrate 1 becomes inaccurate.

An object of the present invention is to provide a substrate for a liquid crystal display panel having a structure in which fragments of an organic alignment film hardly adhere to a recognition mark during a rubbing process.

[0009]

A substrate for a liquid crystal display panel according to the present invention is characterized in that a wall is formed around a recognition mark.

According to the present invention, it is possible to realize a substrate for a liquid crystal display panel in which a rubbed body that rubs the organic alignment film during the rubbing process hardly comes into contact with the recognition mark and fragments of the organic alignment film hardly adhere to the recognition mark. .

[0011]

The substrate for a liquid crystal display panel according to claim 1, wherein an inorganic insulating film is formed on one surface of the substrate main body, an organic alignment film is formed on the inorganic insulating film, and the substrate main body is provided with an inorganic alignment film. In a liquid crystal display panel substrate in which a recognition mark is formed on a part of one surface, a wall is formed around the recognition mark, and the surface of the organic alignment film is rubbed by rubbing with a rubbing treatment. Is designed not to rub the recognition mark.

According to a second aspect of the present invention, there is provided a substrate for a liquid crystal display panel,
In the first aspect, the wall is provided with an inorganic insulating film and an organic alignment film formed on the substrate main body in proximity to the recognition mark.

According to a third aspect of the present invention, there is provided a substrate for a liquid crystal display panel,
In the first aspect, the wall is characterized in that an organic alignment film of the inorganic insulating film and the organic alignment film formed on the substrate body is provided close to the recognition mark.

According to a fourth aspect of the present invention, there is provided a substrate for a liquid crystal display panel,
In any one of claims 1 to 3, when the diameter of the recognition mark is formed to be about 0.05 mm, the wall is formed from 0.05 to 0.25 mm from the center of the recognition mark. Features.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
It will be described based on. [Embodiment 1] FIGS. 1A and 1B show [Embodiment 1].

As shown in FIGS. 1A and 1B, a substrate 1 for a liquid crystal display panel has a glass plate 2 as a substrate body.
An inorganic insulating film 3 is formed on one side of the transparent electrode 6 while leaving a portion of the transparent electrode 6 as a recognition mark and a small area around the transparent electrode 6, and an organic alignment film 4 is formed thereon. Similarly to the case of the inorganic insulating film 3, the organic alignment film 4 is formed leaving a portion of the transparent electrode 6 and its periphery slightly.

By covering the periphery of the transparent electrode 6 with the wall body 10 composed of the inorganic insulating film 3 and the end face of the organic alignment film 4 as described above, the rubbing treatment is performed by rubbing the organic alignment film 4 with the cloth 8. Even at this time, the cloth 8 rubbing the surface of the organic alignment film 4
The hair 9 is hardly in contact with the transparent electrode 6 serving as a recognition mark, so that the fragments of the organic alignment film adhered to the transparent electrode 6 can be significantly reduced. Thus, the transparent electrode 6 can be accurately recognized.

Specifically, the thickness of the inorganic insulating film 3 is 0.1
μm, the thickness of the organic alignment film 4 is 0.1 μm, the thickness of the transparent electrode 6 is 0.25 μm, and the diameter of the transparent electrode 6 is 0.05 m.
m, the wall body 10 formed around the transparent electrode 6 is 0.05 mm to 0.25 mm from the center of the transparent electrode 6.
mm.

[Embodiment 2] FIG. 2 shows [Embodiment 2].
Is shown. [Embodiment 1] In the first embodiment, the wall 10 is made of the inorganic insulating film 3.
[Embodiment 2].
The organic alignment film 4 of the inorganic insulating film 3 and the organic alignment film 4
Alone surrounds the periphery of the transparent electrode 6 as a recognition mark.

Specifically, the thickness of the inorganic insulating film 3 is 0.1
μm, the thickness of the organic alignment film 4 is 0.1 μm, the thickness of the transparent electrode 6 is 0.25 μm, and the diameter of the transparent electrode 6 is 0.05 m.
m, the wall body 10 formed around the transparent electrode 6 is 0.05 mm to 0.25 mm from the center of the transparent electrode 6.
mm.

With this configuration, as in [Embodiment 1], even when rubbing the organic alignment film 4 with a cloth, the surface of the organic alignment film 4 is rubbed. The hairs 9 of the hair 8 hardly come into contact with the transparent electrode 6 as a recognition mark, and the fragments of the organic alignment film adhered to the transparent electrode 6 can be significantly reduced. Thus, the transparent electrode 6 can be accurately recognized.

[0022]

As described above, according to the present invention, an inorganic insulating film is formed on one surface of a substrate body, an organic alignment film is formed on the inorganic insulating film, and a part of the one surface of the substrate body is formed on the inorganic insulating film. In the liquid crystal display panel substrate on which the recognition mark is formed, since the wall is formed around the recognition mark, the rubbing processing body does not rub the recognition mark when rubbing the surface of the organic alignment film with the rubbing processing body. Can greatly reduce the re-adhesion of the organic alignment film to the recognition mark, improve the reliability of position determination, and contribute to the improvement of the productivity of the liquid crystal display panel. It is.

[Brief description of the drawings]

FIG. 1 is a plan view and a cross-sectional view of a liquid crystal display panel substrate according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view of a liquid crystal display panel substrate according to Embodiment 2 of the present invention during a rubbing process.

FIG. 3 is a plan view and a cross-sectional view of a conventional liquid crystal display panel substrate, and an explanatory view of a position determining step.

FIG. 4 is a cross-sectional view of a conventional liquid crystal display panel substrate during a rubbing process.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 substrate for liquid crystal display panel 2 glass plate [substrate body] 3 inorganic insulating film 4 organic alignment film 6 transparent electrode [recognition mark] 10 wall

Claims (4)

[Claims] An inorganic insulating film is formed on one surface of a substrate body,
While forming an organic alignment film on this inorganic insulating film,
When a rubbing treatment is performed by forming a wall around the recognition mark and rubbing the surface of the organic alignment film with a rubbing treatment body in a liquid crystal display panel substrate having a recognition mark formed on a part of one surface of the substrate body. A substrate for a liquid crystal display panel, wherein the rubbing member does not rub the recognition mark. 2. The substrate for a liquid crystal display panel according to claim 1, wherein the wall is provided with an inorganic insulating film and an organic alignment film formed on the substrate main body in proximity to the recognition mark. 3. The substrate for a liquid crystal display panel according to claim 1, wherein the wall is provided with an organic alignment film of the inorganic insulating film and the organic alignment film formed on the substrate main body in proximity to the recognition mark. 4. When the diameter of the recognition mark is formed to be about 0.05 mm, the distance from the center of the recognition mark is 0.05 to 0.2 mm.
The substrate for a liquid crystal display panel according to claim 1, wherein the wall is formed up to a position of 25 mm.