Black matrix structure and manufacturing method thereof, array substrate, color filter substrate and display apparatus

Patent metadata

Field	Value
Publication number	US-10274798-B2
Application number	US-201514891979-A
Country	US
Kind code	B2
Filing date	Jun 16, 2015
Priority date	Dec 1, 2014
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

A black matrix structure and manufacturing method thereof, an array substrate, a color filter substrate and a display apparatus are provided. The black matrix structure comprises a first black matrix and a plurality of predefined opening regions arranged in an array and surrounded by lines of the first black matrix, wherein, each of the predefined opening regions is provided with an opening therein, and at least one of the predefined opening regions is provided with a second black matrix therein, edges of shading pattern of the second black matrix are adjacent to the opening or in contact with at least one line edge of the first black matrix, and length of a part of each line edge of the first black matrix being in contact with the edge of shading pattern of the second black matrix is less than length of this line edge of the first black matrix.

First claim

The invention claimed is:

1. A black matrix structure, comprising a first black matrix and a plurality of predefined opening regions arranged in an array, wherein, each of the plurality of the predefined opening regions is surrounded by lines of the first black matrix and corresponds to one subpixel, and each of the predefined opening regions is provided with an opening therein, and a second black matrix comprising a shading pattern is provided in at least one of the predefined opening regions, wherein,
edges of the shading pattern of the second black matrix are adjacent to the opening in every place of the edges; or
edges of the shading pattern of the second black matrix are in contact with at least one line edge of the first black matrix, and length of a part of each line edge of the first black matrix being in contact with the edge of the shading pattern of the second black matrix is less than length of this line edge of the first black matrix;
wherein a length of an edge of the second black matrix being in contact with the first black matrix is less than half of the total length of the edges of the shading pattern of the second black matrix.

2. The black matrix structure of claim 1 , wherein, the second black matrix comprises a plurality of shading patterns, and the plurality of shading patterns of the second black matrix are arranged uniformly in the predefined opening regions.

3. The black matrix structure of claim 1 , wherein, the first black matrix and the second black matrix are formed in a single patterning process.

4. A black matrix structure, comprising a first black matrix and a plurality of predefined opening regions arranged in an array, wherein, each of the plurality of the predefined opening regions is surrounded by lines of the first black matrix and corresponds to one subpixel, and each of the predefined opening regions is provided with an opening therein, and a second black matrix comprising a shading pattern is provided in at least one of the predefined opening regions, wherein,
edges of the shading pattern of the second black matrix are adjacent to the opening in every place of the edges: or
edges of the shading pattern of the second black matrix are in contact with at least one line edge of the first black matrix, and length of a part of each line edge of the first black matrix being in contact with the edge of the shading pattern of the second black matrix is less than length of this line edge of the first black matrix;
wherein, the at least one of the predefined opening regions of the subpixel provided therein with the second black matrix further includes a third black matrix comprising a shading pattern, edges of the shading pattern of the third black matrix are in contact with one or more line edges of the first black matrix, and length of a part of at least one line edge of the first black matrix being in contact with the edge of shading pattern of the third black matrix is equal to length of the at least one line edge of the first black matrix.

5. The black matrix structure of claim 4 , wherein, the first black matrix, the second black matrix and the third black matrix are formed in a single patterning process.

6. The black matrix structure of claim 4 , wherein, the shading pattern of the second black matrix is polygonal, circular, or elliptical.

7. The black matrix structure of claim 4 , wherein, the shading pattern of the second black matrix has a dimension in at least one direction less than the minimal length that human eyes can see.

8. A manufacturing method of the black matrix structure of claim 4 , comprising steps of:
forming the first black matrix;
forming the second black matrix; and
forming the third black matrix.

9. The manufacturing method of claim 8 , wherein, the second black matrix includes a plurality of shading patterns, and the plurality of shading patterns of the second black matrix are arranged uniformly in the predefined opening regions.

10. The manufacturing method of claim 8 , wherein, the first black matrix and the second black matrix are formed in a single patterning process.

11. The manufacturing method of claim 8 , wherein, the first black matrix, the second black matrix and the third black matrix are formed in a single patterning process.

12. An array substrate, comprising the black matrix structure of claim 4 .

13. The array substrate of claim 12 , comprising a plurality of pixels, each of which includes a red subpixel, a green subpixel and a blue subpixel, each subpixel includes a predefined opening region, wherein,
the opening of the green subpixel is identical to the predefined opening region, the predefined opening regions of the red subpixel and the blue subpixel are provided with the second black matrix therein.

14. A color filter substrate, comprising the black matrix structure of claim 4 .

15. The color filter substrate of claim 14 , comprising a plurality of pixels, each of which includes a red subpixel, a green subpixel and a blue subpixel, each subpixel includes a predefined opening region, wherein,
the opening of the green subpixel is identical to the predefined opening region, the predefined opening regions of the red subpixel and the blue subpixel are provided with the second black matrix therein.

16. A display apparatus, comprising the array substrate of claim 12 .

17. A display apparatus, comprising the array substrate of claim 13 .

18. A display apparatus, comprising the color filter substrate of claim 14 .

19. A display apparatus, comprising the color filter substrate of claim 15 .

20. The black matrix structure of claim 4 , wherein, the second black matrix comprises a plurality of shading patterns, and the plurality of shading patterns of the second black matrix are arranged uniformly in the predefined opening regions.

Assignees

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

Inventors

• Zhan Hongming
• Lin Lifeng
• Shao Xibin
• Chen Ming
• Kim Woong
• Bu Zhanchang
• Ma Yu
• Yang Tonghua

Classifications

• G02F1/133512

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

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title

• G02F2203/04

  wavelength independent · CPC title

• G02F1/136209 Primary

  Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element · CPC title