Method for manufacturing display substrate, display substrate, display panel and display apparatus

Patent metadata

Field	Value
Publication number	US-10509254-B2
Application number	US-201715793115-A
Country	US
Kind code	B2
Filing date	Oct 25, 2017
Priority date	Mar 14, 2017
Publication date	Dec 17, 2019
Grant date	Dec 17, 2019

Abstract

The present disclosure discloses a method for manufacturing a display substrate, a display substrate, a display panel and a display apparatus. The method comprises: forming a black matrix and a plurality of black matrix alignment marks; providing a color film mask having a plurality of color film layer alignment marks associated with the black matrix alignment marks; and forming the color film layer on the black matrix by aligning the black matrix alignment marks with the associated color film layer alignment marks respectively, wherein the black matrix has a group of N first black matrix alignment marks and a group of N second black matrix alignment marks formed on ends of opposing edges thereof, respectively, and a spacing between adjacent first black matrix alignment marks different from that between adjacent second black matrix alignment marks.

First claim

We claim:

1. A method for manufacturing a display substrate, comprising:
forming a black matrix and a plurality of black matrix alignment marks;
providing a color film mask having a plurality of color film layer alignment marks associated with the plurality of black matrix alignment marks respectively; and
forming a color film layer on the black matrix by aligning the black matrix alignment marks with associated color film layer alignment marks respectively,
wherein each end of an edge on one side of the black matrix has a group of N first black matrix alignment marks formed thereon, and a spacing between adjacent first black matrix alignment marks is a first spacing; and each end of an edge on the opposing side of the black matrix has a group of N second black matrix alignment marks formed thereon, and a spacing between adjacent second black matrix alignment marks is a second spacing that is different from the first spacing, where N is an integer greater than 1.

2. The method according to claim 1 , wherein a center of each group of N first black matrix alignment marks is located in a first line, a center of each group of N second black matrix alignment marks is located in a second line, and the second spacing is equal to the first spacing plus n×3P, where n is a positive integer, and P is a spacing between central lines of adjacent sub-pixels.

3. The method according to claim 2 , wherein a spacing between adjacent first color film layer alignment marks is the first spacing plus P or the first spacing minus P; and a spacing between adjacent second color film layer alignment marks is the second spacing plus P or the second spacing minus P.

4. The method according to claim 3 , wherein the first spacing is equal to 1.5 mm, and 0.4 mm<n×3P<1.1 mm.

5. The method according to claim 2 , wherein a spacing between adjacent first color film layer alignment marks in a direction of the first line is the first spacing, and a spacing between adjacent first color film layer alignment marks in a direction perpendicular to the first line is P; and a spacing between adjacent second color film layer alignment marks in the direction of the first line is the second spacing, and a spacing between adjacent second color film layer alignment marks in the direction perpendicular to the first line is P.

6. The method according to claim 5 , wherein the first spacing is equal to 1.5 mm, and 0.4 mm<n×3P<1.1 mm.

7. The method according to claim 2 , wherein the first spacing is equal to 1.5 mm, and 0.4 mm<n×3P<1.1 mm.

8. A display substrate, comprising:
a black matrix having a plurality of black matrix alignment marks arranged thereon; and
a color film layer formed on the black matrix by aligning the black matrix alignment marks with associated color film layer alignment marks on a color film mask respectively,
wherein each end of an edge on one side of the black matrix has a group of N first black matrix alignment marks arranged thereon, and a spacing between adjacent first black matrix alignment marks is a first spacing; and each end of an edge on the opposing side of the black matrix has a group of N second black matrix alignment marks arranged thereon, and a spacing between adjacent second black matrix alignment marks is a second spacing that is different from the first spacing, where N is an integer greater than 1.

9. The display substrate according to claim 8 , wherein a center of each group of N first black matrix alignment marks is located in a first line, a center of each group of N second black matrix alignment marks is located in a second line, and the second spacing is equal to the first spacing plus n×3P, where n is a positive integer, and P is a spacing between central lines of adjacent sub-pixels.

10. The display substrate according to claim 9 , wherein a spacing between adjacent first color film layer alignment marks is the first spacing plus P or the first spacing minus P; and a spacing between adjacent second color film layer alignment marks is the second spacing plus P or the second spacing minus P.

11. The display substrate according to claim 10 , wherein the first spacing is equal to 1.5 mm, and 0.4 mm<n×3P<1.1 mm.

12. A display panel, comprising an array substrate and the display substrate according to claim 10 .

13. The display substrate according to claim 9 , wherein a spacing between adjacent first color film layer alignment marks in a direction of the first line is the first spacing, and a spacing between adjacent first color film layer alignment marks in a direction perpendicular to the first line is P; and a spacing between adjacent second color film layer alignment marks in the direction of the first line is the second spacing, and a spacing between adjacent second color film layer alignment marks in the direction perpendicular to the first line is P.

14. The display substrate according to claim 13 , wherein the first spacing is equal to 1.5 mm, and 0.4 mm<n×3P<1.1 mm.

15. A display panel, comprising an array substrate and the display substrate according to claim 13 .

16. The display substrate according to claim 9 , wherein the first spacing is equal to 1.5 mm, and 0.4 mm<n×3P<1.1 mm.

17. A display panel, comprising an array substrate and the display substrate according to claim 16 .

18. A display panel comprising an array substrate and the display substrate according to claim 9 .

19. A display panel, comprising an array substrate and the display substrate according to claim 8 .

20. A display apparatus, comprising the display panel according to claim 19 .

Assignees

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

Inventors

• Li Danhui
• Long Qingde
• Yang Zerong
• Ye Chao
• Fu Changyu
• Xiong Xiaojiao

Classifications

• G02F1/133514

  Colour filters · CPC title

• G02F1/133512 Primary

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

• G02F1/133516

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

• G02F2001/133354

  Physics · mapped topic

• G02F1/133354

  Arrangements for aligning or assembling substrates · CPC title