JPS6296926A - Liquid crystal display body - Google Patents

Abstract

PURPOSE:To form a light shielding part even on plural electrodes by covering parts between picture elements with a dyed resin layer to intercept the light. CONSTITUTION:A substrate 1 is one of two substrates which form a liquid crystal display body and has a liquid crystal layer, and plural IT electrodes 2 are formed on the face, which is brought into contact with the liquid crystal layer, of the substrate. A gelatin or an acrylic resin which can be patterned by photolithography and has the dyeing property and the insulating property is patterned by photolithography and is dyed with a black dye or the like whose transmittance of visible rays is low to form a black dyed resin layer 3 between IT electrodes 2. Since the black dyes resin layers 3 has the insulating property in this case, short-circuit between electrodes does not occur. Since the black dyed resin layer 3 can absorb visible rays of 400-700nm and has the light shielding property, the contrast is improved considerably.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a method for detecting the difference between adjacent pixels in a liquid crystal display! This is related to the structure of the light shielding part.

[Conventional technology]

As shown in FIG. 4, the light-shielding portion in a conventional liquid crystal display is formed by selectively etching a thin film of metal such as nickel or chromium using a photoresist patterned by photolithography. !
It was formed from four shielding parts 7.

[Problem that the invention seeks to solve]

However, in the above-mentioned conventional technology, since the light-shielding part is formed of a metal thin film, it is necessary to form an insulating layer 8 between the light-shielding part and the electrode in order to form the electrode on the upper side and the lower side. was there. Also,! When there are multiple electrodes, since an etching solution is used when patterning the TA layer, the above-mentioned insulating layer will not be scratched by the etching solution or cracked due to the difference in thermal expansion coefficient with the substrate. ,and,
High visible light transmittance is required. However, there is a problem in that there is no ideal insulating layer that satisfies the above conditions. Therefore, an object of the present invention is to form R base portions also on a plurality of electrodes.

[Means to solve the problem]

The liquid crystal display according to the present invention is a liquid crystal display having a plurality of pixels in which liquid crystal is sealed between two substrates and pixel poles and color filters are laminated on the substrate, in which the spaces between the plurality of pixels are dyed. It is characterized by being covered with a resin layer to block light.

[For production]

According to the above structure of the present invention, since the light shielding part is formed of the insulating resin, it is not affected by the above-mentioned etching solution, and cracks are less likely to occur due to the difference in thermal expansion coefficient with the substrate. , and there is no need to form an insulating layer with high visible light transmittance. Therefore, light shielding parts can be easily formed even on a plurality of ta.

〔Example〕

FIG. 1 shows a cross-sectional view of a liquid crystal display according to the present invention in which a light-shielding portion is formed by dyeing with a dye having a low transmittance of visible light such as black.

The substrate 1 is a part of two substrates that form a liquid crystal display and sandwich a liquid crystal layer, and a plurality of ITO electrodes 2 are formed on the surface of the substrate that comes into contact with the liquid crystal layer.

Furthermore, between the ITO electrodes 2, gelatin or some acrylic resin, which can be patterned by photolithography and has dyeability and insulating properties, is patterned by photolithography, and then visible light such as black is transmitted. A resin layer 3 dyed black is formed by dyeing with a dye with a low dye rate. In this case, since the resin layer 3 dyed black has an insulating property, no short circuit occurs between the electric currents. In addition, the resin layer 3 dyed black
can absorb visible light from 400 nm to 700 nm and has light blocking properties. Therefore, the contrast ratio is significantly improved.

Incidentally, a color filter (not shown) is formed on the ITOt pole 2.

FIG. 2 shows a light shielding part in a liquid crystal display according to the present invention.
Figure 3 shows cross-sectional views of fields formed by dyed resin/ITh stacking with different spectral transmission curves. Similar to the example shown in FIG. 1, a plurality of ITOt electrodes 2 are formed on a substrate 1. Furthermore, between the ITO electrodes, gelatin and some acrylic resins, which can be patterned by photolithography and have dyeability and insulation properties, were patterned by photolithography and dyed with a rough red dye. , red dyed resin layer 5
form. Further, on the red dyed resin layer 4, a blue dyed resin layer 5 is formed by performing the same process. The light shielding part in the liquid crystal display shown in FIG.
Like the example shown in Figure 1, it has insulation properties, so! No short circuit between sliding doors. Further, the area where the resin layer 4 dyed red and the resin layer 5 dyed blue are overlapped is formed by subtractive color mixing of the red spectral transmission curve and the blue spectral transmission curve. It can absorb in the visible -X' range from nm to 700 nm and has translucency.

Although the blue resin layer is formed on the red resin layer, the same effect can be obtained even if the blue resin layer is formed on the red resin layer.

FIG. 3 shows a cross-sectional view of a color liquid crystal display according to the present invention in which a light-shielding portion is formed simultaneously with the formation of a single layer of color filters emitted from dyed resin layers having different spectral transmission curves. Similar to the example shown in FIG. 1, a plurality of ITO electrodes 2 are formed on a substrate 1. 1. In the color filter area that transmits red light and the light-blocking area, gelatin or some acrylic resin that can be patterned by photophosphorography and has dyeing and insulating properties is patterned using photophosphorography. Furthermore, a red-dyed resin layer 4 is formed by dyeing with a red dye. Next, a blue-dyed resin layer 5 is formed in the color filter region that transmits blue light and the light-shielding region in which the red-dyed FC resin layer 4 is formed by the same process. After forging, a green dyed resin layer 6 is formed in the color filter area that transmits green light using the same process. Similar to the example shown in FIG. 2, the light-shielding region has a light-shielding property by laminating the entire resin layer 4 dyed red and the resin layer 5 dyed blue. Furthermore, since the resin layer for the light-shielding region is formed simultaneously with the resin layer for the color filter region, there is no increase in the number of steps for forming the light-shielding region.

In this embodiment, a case where the resin layer is used between the divided t electrodes is shown, but it is also possible to form the resin layer of the present invention in any pattern on the entire electrode to obtain a display pattern.

〔Effect of the invention〕

According to the present invention, forming a light-shielding part using a dyed resin layer made of an insulator can be easily used not only for liquid crystal displays using split electrodes but also for those using full-surface electrodes. .

In addition, since a plurality of dyed resins are laminated, it can be done in the same process as manufacturing a color filter, which simplifies the manufacturing process and makes it possible to obtain a liquid crystal display with an improved contrast ratio at low cost.

[Brief explanation of drawings]

1 and 2 are cross-sectional views of a light shielding part in a liquid crystal display according to the present invention. FIG. 3 is a sectional view of a light shielding part in a color liquid crystal display according to the present invention. The fourth factor is a cross-sectional view of a light shielding part in a conventional liquid crystal display. 1...Substrate 2...ITO electrode 3...
Resin layer 4 dyed black...Subresin layer 5 dyed red...Resin layer 6 dyed blue...Resin layer 7 dyed green...Metal light shielding part 8.・More than insulating layer

Claims (3)

[Claims] (1) In a liquid crystal display having multiple pixels, in which liquid crystal is sealed between two substrates, and pixel electrodes and color filters are laminated on the substrates, the spaces between the multiple pixels are covered with a dyed resin layer to shield light. A liquid crystal display body characterized by: (2) The liquid crystal display according to claim 1, wherein the resin layer is dyed with a dye having low visible light transmittance. (3) The liquid crystal display according to claim 1, wherein the resin layer is dyed with dyes having different spectral transmittances and laminated with a plurality of resins.