Display panel and method of preparing the same, display device

Patent metadata

Field	Value
Publication number	US-9704897-B1
Application number	US-201615231873-A
Country	US
Kind code	B1
Filing date	Aug 9, 2016
Priority date	Mar 25, 2016
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

A display panel, a preparing method thereof and a display device are provided. The method of preparing a display panel includes steps of: coating an alignment material on both a display region of an array substrate and an electrode region of the array substrate located around a periphery of the display region; aligning the alignment material; assembling the aligned array substrate and an aligned color filter substrate into an assembly; cutting the assembly of the array substrate and the color filter substrate into a plurality of display panel units, such that the electrode region of the array substrate is not covered by the color filter substrate in each of the display panel units; and removing the alignment material covering the electrode region of the array substrate so as to expose the electrode region.

First claim

What is claimed is:

1. A method of preparing a display panel, comprising steps of:
coating an alignment material on both a display region of an array substrate and an electrode region of the array substrate located around a periphery of the display region;
aligning the alignment material;
assembling the aligned array substrate and an aligned color filter substrate into an assembly;
cutting the assembly of the array substrate and the color filter substrate into a plurality of display panel units, such that the electrode region of the array substrate is not covered by the color filter substrate in each of the display panel units; and
removing the alignment material covering the electrode region of the array substrate so as to expose the electrode region.

2. The method according to claim 1 , wherein the step of removing the alignment material covering the electrode region of the array substrate comprises a step of removing the alignment material covering the electrode region through ion etching.

3. The method according to claim 2 , wherein the ion etching is conducted under a condition defined by the following process parameters: power in a range of 220 to 280 watts, Ar flowing rate in a range of 3 to 13 liters per minute, O 2 flowing rate in a range of 0.028 to 0.035 liters per minute and etching duration in a range of 15 to 25 seconds.

4. The method according to claim 3 , wherein the ion etching is conducted under the condition defined by the following process parameters: power of 220 watts, Ar flowing rate of 7 liters per minute, O 2 flowing rate of 0.035 liters per minute and etching duration of 15 seconds.

5. The method according to claim 3 , wherein the ion etching is conducted under the condition further defined by the following process parameter: a percentage by volume of O 2 to a total gas including O 2 and Ar in a range of 0.3%-0.7%.

6. The method according to claim 1 , wherein the step of removing the alignment material covering the electrode region of the array substrate comprises a step of removing the alignment material covering the electrode region through chemical etching.

7. The method according to claim 6 , further comprising: covering the display region of the array substrate by means of sealing adhesive or sucking disk before removing the alignment material covering the electrode region through chemical etching.

8. The method according to claim 6 , wherein an etching solution used in the chemical etching comprises hydrazine compounds or hydroxide solutions.

9. The method according to claim 7 , wherein the step of covering the display region of the array substrate by means of sealing adhesive comprises a step of covering the display region of the array substrate with photoresist.

10. The method according to claim 9 , wherein the photoresist consists of the following components: 75 to 90 percentage by weight propylene glycol monomethyl ether acetate (PGMEA), 5 to 15 percentage by weight phenolic resin and 2 to 10 percentage by weight photo active compound (PAC).

11. The method according to claim 1 , wherein the step of coating the alignment material on the array substrate comprises: coating the alignment material by means of relief printing, jet printing or screen printing.

12. The method according to claim 2 , wherein the step of coating the alignment material on the array substrate comprises: coating the alignment material by means of relief printing, jet printing or screen printing.

13. The method according to claim 6 , wherein the step of coating the alignment material on the array substrate comprises: coating the alignment material by means of relief printing, jet printing or screen printing.

14. The method according to claim 1 , wherein, in the step of coating the alignment material on the array substrate, the alignment material comprises polyimide.

15. The method according to claim 1 , wherein the step of aligning the alignment material comprises: aligning the alignment material through rubbing alignment or photo alignment.

16. The method according to claim 2 , wherein the step of aligning the alignment material comprises: aligning the alignment material through rubbing alignment or photo alignment.

17. The method according to claim 6 , wherein the step of aligning the alignment material comprises: aligning the alignment material through rubbing alignment or photo alignment.

18. A display panel prepared by the method according to claim 1 ,
wherein the display panel comprises a color filter substrate and an array substrate having a display region and an electrode region located around a periphery of the display region, and the electrode region of the array substrate is not covered by the color filter substrate.

19. A display device comprising the display panel according to claim 18 .

Assignees

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

Inventors

• Fan Yuguang
• Li Jingpeng
• Li Jian
• Tan Yifeng
• Li Wei

Classifications

• H10P50/282

  of inorganic materials · CPC title

• H10P14/68

  Organic materials, e.g. photoresists · CPC title

• G02F1/133723

  Polyimide, polyamide-imide · CPC title

• G02F1/133351

  Manufacturing of individual cells out of a plurality of cells, e.g. by dicing · CPC title

• G02F1/13378 Primary

  by treatment of the surface, e.g. embossing, rubbing or light irradiation (G02F1/133711, G02F1/133734, G02F1/133753 take precedence) · CPC title