Liquid crystal display panel and method for preparing the same, and display device

Patent metadata

Field	Value
Publication number	US-9726936-B2
Application number	US-201414513301-A
Country	US
Kind code	B2
Filing date	Oct 14, 2014
Priority date	Jun 23, 2014
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

The invention relates to a liquid crystal display panel and a method for preparing the same, and a display device. The liquid crystal display panel comprises: a color filter substrate, and a black matrix, an RGB blocking layer, a planarization layer and that are formed in turn on the color filter substrate, and a TFT substrate, wherein, an ultraviolet absorbent is added to a raw material gel of the planarization layer and/or an RGB blocking material, and when the ultraviolet absorbent is added to the raw material gel of the planarization layer, the area of the planarization layer is no larger than that of a region sealed by the seal agent. Abnormal color development on the effective display region may be effectively avoided without employing a UV mask required in the display device of the present invention.

First claim

What is claimed is:

1. A liquid crystal display panel, comprising:
a color filter substrate;
a RGB blocking layer on the color filter substrate;
a planarization layer having a raw material gel on the color filter substrate;
a TFT substrate opposite to the color filter substrate; and
a UV-cured seal agent between the color filter substrate and the TFT substrate;
wherein:
the planarization layer comprises an UV absorbent in the raw material gel;
an area of the planarization layer is no larger than a region sealed by the UV-cured seal agent; and
the planarization layer covers the whole surface of the color filter substrate in a region sealed by the UV-cured seal agent.

2. The liquid crystal display panel according to claim 1 , wherein the ultraviolet absorbent consists of 2-hydroxyl-4-methoxylbenzophenone and 2-hydroxyl-4-n-octoxybenzophenone which are mixed in a mass ratio of 1:2.

3. The liquid crystal display panel according to claim 1 , wherein the ultraviolet absorbent consists of 2-hydroxyl-4-n-octoxybenzophenone and 2-(2′-hydroxyl-5′-methylphenyl) benzotriazole which are mixed in a mass ratio of 1:1.

4. The liquid crystal display panel according to claim 1 , wherein the addition level of the ultraviolet absorbent in the raw material gel of the planarization layer is in the range from 0.1% to 1.5% by mass.

5. The liquid crystal display panel according to claim 1 , wherein the addition level of the ultraviolet absorbent in the raw material gel of the planarization layer is in the range from 0.8% to 1.0% by mass.

6. The liquid crystal display panel according to claim 1 , wherein the planarization layer is formed by printing the raw material gel of the planarization layer on the color filter substrate through an ink-jet method.

7. The liquid crystal display panel according to claim 4 , wherein the planarization layer is formed by printing the raw material gel of the planarization layer on the color filter substrate through an ink-jet method.

8. The liquid crystal display panel according to claim 5 , wherein the planarization layer is formed by printing the raw material gel of the planarization layer on the color filter substrate through an ink-jet method.

9. The liquid crystal display panel according to claim 1 , wherein the RGB blocking layer comprises an ultraviolet absorbent and an addition level of the ultraviolet absorbent in the RGB blocking layer is in the range from 0.1% to 1.5% by mass.

10. A display device comprising the liquid crystal display panel according to claim 1 .

11. A method for preparing a liquid crystal display panel, comprising the steps of:
adding an ultraviolet absorbent to a raw material gel of a planarization layer;
forming a planarization layer on a color filter substrate with the raw material gel of the planarization layer, forming an RGB blocking layer with the RGB blocking material, and controlling the area of the planarization layer as no larger than that of a region sealed by a UV-cured seal agent, wherein the planarization layer comprises an UV absorbent in the raw material gel; and
oppositely arranging the color filter substrate and a TFT substrate to form a cell, and curing the UV-cured seal agent via ultraviolet from the side of the color filter substrate, thereby obtaining a liquid crystal display panel,
wherein the planarization layer covers the whole surface of the color filter substrate in a region sealed by the UV-cured seal agent.

12. The method according to claim 11 , wherein the ultraviolet absorbent in the raw material gel of the planarization layer is in the range from 0.1% to 1.5% by mass.

13. The method according to claim 11 , wherein the ultraviolet absorbent consists of 2-hydroxyl-4-methoxylbenzophenone and 2-hydroxyl-4-n-octoxybenzophenone which are mixed in a mass ratio of 1:2.

14. The method according to claim 11 , wherein when the ultraviolet absorbent is added to the raw material gel of the planarization layer, the addition level of the ultraviolet absorbent in the raw material gel of the planarization layer is in the range from 0.1% to less than 0.5% by mass.

15. The liquid crystal display panel according to claim 1 , wherein the addition level of the ultraviolet absorbent in the raw material gel of the planarization layer is in the range from 0.1% to less than 0.5% by mass.

16. The liquid crystal display panel according to claim 1 , wherein the ultraviolet absorbent consists of 2-hydroxyl-4-methoxylbenzophenone and 2-hydroxyl-4-n-octoxybenzophenone which are mixed in a mass ratio of 1:1 to 1:3, or 2-hydroxyl-4-n-octoxybenzophenone and 2-(2′-hydroxyl-5-methylphenyl) benzotriazole which are mixed in a mass ratio of 1:1 to 1:3.

17. The method according to claim 11 , wherein the ultraviolet absorbent consists of 2-hydroxyl-4-methoxylbenzophenone and 2-hydroxyl-4-n-octoxybenzophenone which are mixed in a mass ratio of 1:1 to 1:3, or 2-hydroxyl-4-n-octoxybenzophenone and 2-(2′-hydroxyl-5′-methylphenyl) benzotriazole which are mixed in a mass ratio of 1:1 to 1:3.

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Display Tech Co

Inventors

• Chen Yuqiong

Classifications

• G02F2001/133357

  Physics · mapped topic

• G02F1/1341

  Filling or closing of cells · CPC title

• G02B5/20

  Filters (polarising elements G02B5/30) · CPC title

• G02F1/133514

  Colour filters · CPC title

• G02F2201/086

  UV absorbing · CPC title