Color filter substrate and method of manufacturing same and liquid crystal display device

Patent metadata

Field	Value
Publication number	US-11415839-B2
Application number	US-201916615550-A
Country	US
Kind code	B2
Filing date	Oct 29, 2019
Priority date	Jul 5, 2019
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A color filter substrate and a method of manufacturing the same and a liquid crystal display device are disclosed. A display area is provided with a first spacer, and a non-display area is provided with a second spacer. The non-display area is further provided with a virtual color resist layer. Color of the virtual color resist layer is the same as color of the third color resist layer, and a height of the first spacer is greater than a height of the second spacer.

First claim

What is claimed is:

1. A color filter substrate, comprising: a display area and a non-display area, wherein the display area is provided with a substrate, a plurality of black matrices, a plurality of color resist layers of different colors, and a first spacer;
wherein the non-display area is provided with the substrate, the plurality of black matrices, a virtual color resist layer, and a second spacer;
wherein color of the virtual color resist layer is same as color of one of the color resist layers, material of the first spacer is same as material of the second spacer, and a height of the first spacer from a surface of the substrate is greater than a height of the second spacer from the surface of the substrate;
wherein the color resist layer is divided into a first color resist layer, a second color resist layer, and a third color resist layer;
wherein the color of the virtual color resist layer is same as color of the third color resist layer;
wherein a height of the first color resist layer from the surface of the substrate is equal to a height of the second color resist layer from the surface of the substrate and a height of the third color resist layer from the surface of the substrate, and greater than a height of the virtual color resist layer from the surface of the substrate,
wherein a difference between the height of the first, second or third color resist layer and the height of the virtual color resist layer is less than or equal to 0.1 um, and
wherein a difference between the height of the first spacer and the height of the second spacer is less than 0.1 um.

2. The color filter substrate of claim 1 , wherein an orthographic projection area of the first spacer on the substrate is equal to an orthographic projection area of the second spacer on the substrate.

3. The color filter substrate of claim 2 , wherein the height of the second spacer is greater than the height of the first color resist layer, the second color resist layer, or the third resist layer.

4. The color filter substrate of claim 1 , wherein shapes of the spacers and the color resist layer are rectangular parallelepipeds, cubes, cylinders, or circular truncated cones.

5. The color filter substrate of claim 1 , wherein the black matrices on the substrate are spaced apart from each other.

6. The color filter substrate of claim 5 , wherein the black matrices are disposed on the same side of the first color resist layer, the second color resist layer, or the third color resist layer.

7. The color filter substrate of claim 6 , wherein the first spacer and the second spacer are disposed on a side of the black matrices facing away from the substrate.

8. A liquid crystal display device, comprising: a color filter substrate and an array substrate disposed facing the color filter substrate, a liquid crystal layer disposed between the array substrate and the color filter substrate, and a backlight module adjacent to a side of the array substrate of a liquid crystal display panel consisting of the color filter substrate, the liquid crystal layer, and the array substrate;
wherein the color filter substrate comprises a display area and a non-display area;
wherein the display area is provided with a substrate, a plurality of black matrices, a plurality of color resist layers of different colors, and a first spacer;
wherein the non-display area is provided with a substrate, a plurality of black matrices, a virtual color resist layer and a second spacer;
wherein color of the virtual color resist layer is the same as color of one of the color resist layers, and material of the first spacer is the same as material of the second spacer, and a height of the first spacer from a surface of the substrate is greater than a height of the second spacer from the surface of the substrate;
wherein the color resist layer is divided into a first color resist layer, a second color resist layer, and a third color resist layer;
wherein the color of the virtual color resist layer is the same as color of the third color resist layer;
wherein a height of the first color resist layer from the surface of the substrate is equal to a height of the second color resist layer from the surface of the substrate and a height of the third color resist layer from the surface of the substrate, and greater than a height of the virtual color resist layer from the surface of the substrate,
wherein a difference between the height of the first, second or third color resist layer and the height of the virtual color resist layer is less than or equal to 0.1 um, and
wherein a difference between the height of the first spacer and the height of the second spacer is less than 0.1 um.

Assignees

• Tcl China Star Optoelectronics Tech Co Ltd

Inventors

• Yu Yun

Classifications

• G02F1/133514

  Colour filters · CPC title

• G02F1/13394 Primary

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title

• G02F1/13396 Primary

  Spacers having different sizes · CPC title

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/133516

  Methods for their manufacture, e.g. printing, electro-deposition or photolithography · CPC title