JPS6377027A - Liquid crystal panel - Google Patents

Abstract

PURPOSE:To prevent an opaque material from cracking by dividing the opaque material at necessary intervals. CONSTITUTION:A color filter 3 is formed on a transparent insulating substrate 1-2 and the opaque material is formed on the color filter 3. At this time, metal, e.g. titanium is vapor-deposited as the opaque material. This vapor-deposited titanium layer 5-1 is patterned with resist by using a photomask to form divisions which are at necessary intervals. The intervals (a) are provided to picture element peripheral edge parts while parts A where thin film transistors 2 are shielded from light are avoided. In another way, titanium is vapor- deposited entirely on the color filter 3 by using a negative mask to form a titanium layer 5-1 by a lift-off method. Consequently, the opaque material which never cracks in a manufacturing process is formed and a liquid crystal panel of high quality is manufacture efficiently.

Description

Detailed Description of the Invention [Summary] The present invention provides a liquid crystal panel in which an opaque material formed on a color filter is divided into parts in order to prevent the opaque material from generating cranks due to differences in thermal expansion coefficients. are doing.

[Industrial application field]

The present invention relates to liquid crystal panels, and particularly to active matrix color liquid crystal panels.

This liquid crystal panel has a structure in which liquid crystal is sandwiched between two transparent insulating substrates, and the interval between them is about 10 μm.

Generally, thin film transistors are used in a matrix configuration to drive the electrodes. This thin film transistor generates a current when it receives light, which becomes a leakage current of the liquid crystal panel, so it is necessary to shield it from light.

Therefore, there is a need for a liquid crystal panel that is easy to manufacture, has good light shielding properties, and has good display quality.

[Conventional technology]

A conventional liquid crystal panel has a structure shown in FIG. 2, and has a metal reflective N7 that also serves as a display electrode serving as a pixel on one transparent insulating substrate 1-1, and a thin film transistor 2 that controls the voltage applied to the pixel. is formed in a matrix shape.

The liquid crystal is sealed between this transparent insulating substrate 1-1 and another transparent insulating substrate 1-2 facing the transparent insulating substrate 1-1.

On the liquid crystal filling surface of the transparent insulating substrate 1-2, a color filter 3, an opaque substance 4 for preventing light from entering the thin film transistor 2 and for clarifying the area of each pixel and adding contrast, Furthermore, a transparent conductive film 5 serving as a common electrode is provided on this.

The opaque material 4 that blocks this light is constructed as shown in the perspective view of FIG. That is, as shown in Figure 3,
It is formed in a grid shape along the periphery of each pixel, and is
The portion is formed to block light from reaching the thin film transistor 2.

The color filter 3 that is in close contact with the opaque substance 4 is made of resin printed with an organic dye. When attempting to manufacture a liquid crystal panel with a conventional structure, the opaque material 4 is distorted due to temperature changes during the process, causing cracks in the opaque material.
occurs.

[Means for solving problems]

This invention has a structure in which the opaque material (4) is divided at required intervals.

[Effect]

Since the opaque material is divided, even if temperature changes occur during the process, the amount of strain in the opaque material due to the coefficient of thermal expansion can be reduced, and cracks in the opaque material can be prevented.

〔Example〕

FIG. 1 is a perspective view showing an embodiment of the present invention.

That is, when forming the color filter 3 on the transparent insulating substrate 1-2 and forming the opaque substance 4 on the color filter 3, a metal such as titanium (Ti) is used as the opaque substance.
Deposit. This vapor-deposited titanium layer 5-1 is subjected to resist patterning using a photomask to create a titanium layer divided into required intervals.

Note that the interval a is provided at the peripheral edge of the pixel, avoiding the area A in FIG. 1 that shields the thin film transistor 2 from light.

Alternatively, titanium is deposited on the entire surface of the color filter 3 using a negative mask, and the titanium layer 5-1 is formed by a lift-off method.

At this time, the interval a is created to be 1 μm or less.

〔effect〕

As is clear from the above description, according to the present invention, an opaque substance that does not cause cranking during the manufacturing process can be formed by adding a simple process, and is extremely useful for efficiently manufacturing high-quality liquid crystal panels. It has an effective effect.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a sectional view showing the structure of a conventional liquid crystal panel, and FIG. 3 is a perspective view showing a conventional opaque material. In the figure, 1-1 and 1-2 are transparent insulating substrates, 2 is a thin film transistor, 3 is a color filter, 4 is an opaque material, 5 is a transparent conductive film, and 6 is a liquid crystal. Figure 2 Sha Tsutsutsutsu 4 I Inuga Show P Pass Brittle Figure Figure 3

Claims (1)

[Claims] One transparent insulating substrate (1-1) on which a thin film transistor (2) is mounted, and the transparent insulating substrate (1-1)
) and a color filter (3) arranged for each pixel on the other transparent insulating substrate (1-2) facing the opaque material (4) that shields the thin film transistor (2) from light on the color filter (3). ) and a transparent conductive film (5) are laminated, and a liquid crystal (
6) interposed therebetween, the liquid crystal panel having a structure in which the opaque material (4) is divided at required intervals.