Color film substrate, liquid crystal display panel and liquid crystal display

Patent metadata

Field	Value
Publication number	US-10996505-B2
Application number	US-201816070684-A
Country	US
Kind code	B2
Filing date	Jan 2, 2018
Priority date	May 27, 2017
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

Embodiments of the present disclosure provide a color film substrate, a liquid crystal display panel and a liquid crystal display, wherein the color film substrate includes a base substrate and a photoresist layer formed on the base substrate, the photoresist layer includes a plurality of recess parts, each of the plurality of recess parts has an opening facing away from the base substrate and a lateral surface with a step structure, and an orthographic projection of the opening of each of the plurality of recess parts onto the base substrate overlaps with an orthographic projection of a bottom of each of the plurality of recess parts onto the base substrate.

First claim

The invention claimed is:

1. A color film substrate, comprising a base substrate and a photoresist layer formed on the base substrate, wherein the photoresist layer comprises a plurality of recess parts, each of the plurality of recess parts has an opening facing away from the base substrate and a lateral surface with a step structure, and an orthographic projection of the opening of each of the plurality of recess parts onto the base substrate overlaps with an orthographic projection of a bottom of each of the plurality of recess parts onto the base substrate;
wherein a cross section of each of the plurality of recess parts paralleled with the base substrate shapes as a circle, an oval, or a triangle.

2. The color film substrate according to claim 1 , wherein the photoresist layer comprises a plurality of color photoresists and a black photoresist arranged between two adjacent color photoresists; and
the plurality of recess parts are arranged on the color photoresists; or
the plurality of recess parts are arranged on the black photoresist; or
the plurality of recess parts are arranged on the color photoresists and the black photoresist.

3. The color film substrate according to claim 1 , wherein at least one recess part extends through the photoresist layer.

4. The color film substrate according to claim 1 , wherein the plurality of recess parts constitute several recess part columns; and recess parts of two adjacent recess part columns are aligned with each other in a row direction, or the recess parts of two adjacent recess part columns are staggered with each other in a column direction.

5. The color film substrate according to claim 4 , wherein when the recess parts of two adjacent recess part columns are staggered with each other in the column direction, spacing between two adjacent recess parts in each of the plurality of recess parts column is L, and the recess parts of two adjacent recess part columns are staggered by a distance of L/2 in the column direction.

6. The color film substrate according to claim 5 , wherein spacing D between two adjacent recess part columns in a row direction is equal to (√{square root over (3)}/2) L.

7. The color film substrate according to claim 5 , wherein spacing D between two adjacent recess part columns in a row direction is equal to L*D 0 /(2L 0 ), wherein L 0 is a size of a long edge of the photoresist layer, and D 0 is a size of a wide edge of the photoresist layer.

8. The color film substrate according to claim 1 , wherein the photoresist layer comprises a plurality of color photoresists and a black photoresist arranged between two adjacent color photoresists; the lateral surface of each of the plurality of recess parts is constituted by a lateral surface of an adjacent color photoresist, and the bottom of each of the plurality of recess parts is the black photoresist.

9. The color film substrate according to claim 8 , wherein a maximum distance between a surface of a side, facing away from the base substrate, of the color photoresist and the base substrate is greater than a distance between a surface of a side, facing away from the base substrate, of the black photoresist and the base substrate.

10. A liquid crystal display panel, comprising a color film substrate, wherein the color film substrate comprises a base substrate and a photoresist layer formed on the base substrate, wherein the photoresist layer comprises a plurality of recess parts; each of the plurality of recess parts has an opening facing away from the base substrate and a lateral surface with a step structure, and an orthographic projection of the opening of each of the plurality of recess parts onto the base substrate overlaps with an orthographic projection of a bottom of each of the plurality of recess parts onto the base substrate;
wherein a cross section of each of the plurality of recess parts paralleled with the base substrate shapes as a circle, an oval, or a triangle.

11. A liquid crystal display, comprising the liquid crystal display panel according to claim 10 .

12. The liquid crystal display panel according to claim 10 , wherein the photoresist layer comprises a plurality of color photoresists and a black photoresist arranged between two adjacent color photoresists; and
the plurality of recess parts are arranged on the color photoresists; or
the plurality of recess parts are arranged on the black photoresist; or
the plurality of recess parts are arranged on the color photoresists and the black photoresist.

13. The liquid crystal display panel according to claim 10 , wherein at least one recess part extends through the photoresist layer.

14. The liquid crystal display panel according to claim 10 , wherein the plurality of recess parts constitute several recess part columns; and recess parts of two adjacent recess part columns are aligned with each other in a row direction, or the recess parts of two adjacent recess part columns are staggered with each other in a column direction.

15. The liquid crystal display panel according to claim 14 , wherein when the recess parts of two adjacent recess part columns are staggered with each other in the column direction, spacing between two adjacent recess parts in each of the plurality of recess parts column is L, and the recess parts of two adjacent recess part columns are staggered by a distance of L/2 in the column direction.

16. The liquid crystal display panel according to claim 15 , wherein spacing D between two adjacent recess part columns in a row direction is equal to (√{square root over (3)}/2) L; or
the spacing D between two adjacent recess part columns in the row direction is equal to L*D 0 /(2L 0 ), wherein L 0 is a size of a long edge of the photoresist layer, and D 0 is a size of a wide edge of the photoresist layer.

17. The liquid crystal display panel according to claim 10 , wherein the photoresist layer comprises a plurality of color photoresists and a black photoresist arranged between two adjacent color photoresists; the lateral surface of each of the plurality of recess parts is constituted by a lateral surface of an adjacent color photoresist, and the bottom of each of the plurality of recess parts is the black photoresist.

18. The liquid crystal display panel according to claim 17 , wherein a maximum distance between a surface of a side, facing away from the base substrate, of the color photoresist and the base substrate is greater than a distance between a surface of a side, facing away from the base substrate, of the black photoresist and the base substrate.

Assignees

• Boe Technology Group Co Ltd
• Chengdu Boe Optoelect Tech Co
• Boe Tech Group Ltd

Inventors

• Xu Yuanjie
• Zang Pengcheng

Classifications

• G02F1/133512 Primary

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/133514 Primary

  Colour filters · CPC title

• G02F1/133305 Primary

  Flexible substrates, e.g. plastics, organic film · CPC title