JPH10333156A - Color liquid crystal display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the panel which can have its contrast improved and is free of rough on a display by adhering spacers which control a gap to a black part which shields a color filter other than its pixel part from light. SOLUTION: A smooth layer 2 is provided on a substrate 1 where a color filter and a transparent electrode is formed thereupon. After the transparent electrode 3 is etched in specific pattern, an orientation film 4 is formed and an orientation process is performed. Then spacers 7 coated with thermoplastic resin are arranged at the black part which shields the part other than the pixel part 5 and adhered by being heated. On an opposite-side substrate 8, an orientation film 10 is provided on a transparent electrode 9 formed in specific pattern and an orientation process is performed. Those two electrode substrates 1 and 8 are adhered with a seal and liquid crystal 11 is charged inside to manufacture the color liquid crystal display panel.

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 widely used in OA and AV equipment in recent years, and more particularly to a color liquid crystal display panel using a color filter.

[0002]

2. Description of the Related Art In recent years, in a color liquid crystal display panel widely used in OA and AV equipment, a spacer is used to control a gap.

A conventional example will be described with reference to FIG. In FIG. 2, a smooth layer 22 is provided on a glass substrate 21 and the smooth layer 2 is formed.
After the transparent electrode 23 is formed on the substrate 2 and the transparent electrode 23 is etched into a predetermined pattern, an alignment film 24 is formed. Further, a black portion 26 for shielding a portion other than the picture element portion 25 from light is formed. Also, the glass substrate 27 on the opposite side
In the above, the transparent electrode 28 formed in a predetermined pattern
Then, an alignment film 29 is formed. After sealing the liquid crystal 30 inside, elliptically polarizing plates 31 and 32 are attached to the front and back.

Reference numeral 33 denotes a spacer for controlling the interval between the transparent electrodes 23 and 28, which is randomly disposed between the transparent electrodes 23 and 28.

[0005]

As described above, in a color liquid crystal display panel in which spacers 33 for controlling a gap are randomly arranged, the spacers 33 are not provided.
In addition, since there is light leakage in the picture element portion 25 due to abnormal orientation or the like around the spacer 33, there have been problems such as a decrease in contrast in optical characteristics and a so-called rough feeling on display.

Therefore, an object of the present invention is to solve the above-mentioned conventional problems.

[0007]

In order to achieve this object, the present invention provides a color liquid crystal display panel in which a black resin portion of a color filter is provided with a spacer coated with a thermoplastic resin, and the spacer is provided on the black portion. It is bonded by heating.

According to this structure, since the spacer for controlling the gap is adhered to the black portion for shielding the portion other than the pixel portion from light, the pixel portion is formed by the conventional spacer and the abnormal orientation around the spacer. No light leakage occurs in the portion, the contrast does not decrease in optical characteristics, and defects such as roughness on the display can be eliminated.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be embodied in the forms described in the claims.

That is, at least one of the opposing electrode substrates has a color filter composed of a black portion for shielding a portion other than the picture element portion, and a spacer in which the black portion of the color filter is coated with a thermoplastic resin. The present invention can be applied to a color liquid crystal display panel by arranging and heating the spacer to adhere to the black portion.

Since the spacer is adhered to the black portion for shielding the portion other than the picture element portion from light as described above, no light leakage occurs in the picture element portion due to the spacer and the abnormal orientation around the spacer. Therefore, the contrast is not reduced in the optical characteristics, and no roughness is felt on the display.

[0012]

An embodiment of the present invention will be described below.

FIG. 1 is a sectional view of a color liquid crystal display panel according to the present invention. As shown in FIG. 1, a smooth layer 2 is provided on a substrate 1 on which a color filter is formed, and a transparent electrode 3 is formed thereon. After etching the transparent electrode 3 into a predetermined pattern, an alignment film 4 is formed and an alignment process is performed. Next, a spacer 7 coated with a thermoplastic resin is arranged on a black portion 6 that shields light except for the picture element portion 5 and is adhered by heating. On the substrate 8 on the opposite side, the alignment film 1 is formed on the transparent electrode 9 formed in a predetermined pattern.
0 is set and an alignment process is performed. The two electrode substrates are adhered with a seal, and the liquid crystal 11 is sealed inside to produce a color liquid crystal display panel. After that, predetermined elliptically polarizing plates 12 and 13 were attached to the front and back of the color liquid crystal display panel, and a drive circuit was attached to the liquid crystal display module. It could be confirmed.

[0014]

As described above, according to the present invention, since the spacer for controlling the gap is adhered to the black part for shielding the part other than the picture element part of the color filter from light, the abnormal orientation around the spacer and the spacer is caused. No light leakage occurs in the picture element portion. In addition, there is an effect that the contrast can be reduced in terms of optical characteristics, and that a rough feeling on display can be eliminated.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a color liquid crystal display panel according to an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a conventional color liquid crystal display panel.

[Explanation of symbols]

 1,8 substrate 2 smooth layer 3,9 transparent electrode 4,10 alignment film 5 picture element part 6 black part 7 spacer 11 liquid crystal 12,13 elliptically polarizing plate

Claims (1)

[Claims] At least one of the opposing electrode substrates has:
It has a color filter composed of a black part that shields the part other than the picture element part, a spacer coated with a thermoplastic resin is arranged on the black part of the color filter, and the spacer is adhered to the black part by heating. A color liquid crystal display panel, characterized in that: