Display substrate, fine metal mask set and display device

Patent metadata

Field	Value
Publication number	US-11800771-B2
Application number	US-202117448200-A
Country	US
Kind code	B2
Filing date	Sep 20, 2021
Priority date	Jan 2, 2018
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

A display substrate includes a plurality of first pixels and a plurality of second pixels alternately arranged in a first direction and a second direction. Each of the first pixels includes a first sub-pixel and a second sub-pixel, and each of the second pixels includes a third sub-pixel and a second sub-pixel. The second sub-pixels are evenly arranged in a matrix. The first sub-pixel and the third sub-pixel are both in a polygonal shape, and are alternately arranged in the first direction and the second direction. For one first sub-pixel and one third sub-pixel adjacent to each other in the first direction, a line connecting a vertex of the one first sub-pixel closest to the one third sub-pixel with a vertex of the one third sub-pixel closest to the one first sub-pixel intersects an extension line in the first direction and an extension line in the second direction.

First claim

What is claimed is:

1. A display substrate, wherein the display substrate comprises a plurality of sub-pixel groups, the plurality of sub-pixel groups are arranged in a first direction or a second direction, and at least one sub-pixel group comprises two first sub-pixels, four second sub-pixels and two third sub-pixels,
wherein, in the at least one sub-pixel group, each of the four second sub-pixels comprises at least one pair of parallel sides, and multiple pairs of parallel sides of the four second sub-pixels are parallel to one another, the multiple pairs of parallel sides of the four second sub-pixels are respectively parallel to at least one side of each first sub-pixel, and the multiple pairs of parallel sides of the second sub-pixels are respectively parallel to at least one side of each third sub-pixel;
in the at least one sub-pixel group, one first sub-pixel and one third sub-pixel are located on a first side of the four second sub-pixels, and the other first sub-pixel and the other third sub-pixel are located on a second side of the four third sub-pixels, the second side is opposite to the first side, the first sub-pixel located on the first side of the four second sub-pixels is located in the same row as the third sub-pixel located on the second side of the four second sub-pixels, and the third sub-pixel located on the first side of the four second sub-pixels is located in the same row as the first sub-pixel located on the second side of the four second sub-pixels;
the plurality of sub-pixel groups are arranged in the first direction, and in two adjacent sub-pixel groups, the first sub-pixel located on the second side in a first sub-pixel group and the third sub-pixel located on the first side in a second sub-pixel group are adjacent to each other, the third sub-pixel located on the second side in the first sub-pixel group and the first sub-pixel located on the first side in the second sub-pixel group are adjacent to each other; and
in one of the sub-pixel groups, a size of each first sub-pixel in the second direction is greater than a size of the first sub-pixel in the first direction, a size of each third sub-pixel in the second direction is greater than a size of the third sub-pixel in the first direction, and each of a size of the first sub-pixel and a size of the third sub-pixel in the second direction is greater than a size of each second sub-pixel in the second direction.

2. The display substrate of claim 1 , wherein, in one of the sub-pixel groups, each of the four second sub-pixels comprises a first pair of parallel sides and a second pair of parallel sides;
the first pair of parallel sides are parallel to at least one side of each first sub-pixel, and the first pair of parallel sides are parallel to at least one side of each third sub-pixel; and
the second pair of parallel sides are parallel to at least one side of each first sub-pixel, and the second pair of parallel sides are parallel to at least one side of each third sub-pixel.

3. The display substrate of claim 1 , wherein, in one of the sub-pixel groups, the four second sub-pixels are arranged in a second direction, a first angle is formed between at least one side of each first sub-pixel and the second direction, the first angle is greater than 0° and less than or equal to 90°, a second angle is formed between at least one side of each third sub-pixel and the second direction, and the second angle is greater than 0° and less than or equal to 90°.

4. The display substrate of claim 1 , wherein, in one of the sub-pixel groups:
a distance between two farthest ends of the first sub-pixels and the third sub-pixels located on the first side of the four second sub-pixels in the second direction does not exceed a distance between two farthest ends of the four second sub-pixels in the second direction; and/or
a distance between two farthest ends of the first sub-pixels and the third sub-pixels located on the second side of the four second sub-pixels in the second direction does not exceed a distance between two farthest ends of the four second sub-pixels in the second direction.

5. The display substrate of claim 1 , wherein, in one of the sub-pixel groups:
an orthographic projection of one first sub-pixel on a straight line, on which the second direction is located, overlaps at least partially orthographic projections of two second sub-pixels, that are adjacent to the one first sub-pixel, on the straight line; and/or
an orthographic projection of one third sub-pixel on the straight line, on which the second direction is located, overlaps at least partially orthographic projections of two second sub-pixels, that are adjacent to the one third sub-pixel, on the straight line.

6. The display substrate of claim 1 , wherein, in one of the sub-pixel groups:
there is a first gap between the first sub-pixel and the third sub-pixel located on the first side of the four second sub-pixels;
there is a second gap between the third sub-pixel and the first sub-pixel located on the second side of the four second sub-pixels;
there is a third gap between two adjacent ones of the four second sub-pixels;
an orthographic projection of the first gap on a straight line, on which the second direction is located, does not coincide with an orthographic projection of the second gap on the straight line; and
an orthographic projection of each of the first gap and the second gap on the straight line does not coincide with an orthographic projection of the third gap on the straight line.

7. The display substrate of claim 1 , wherein, in one of the sub-pixel groups, each first sub-pixel comprises a first side parallel to the first direction, and each third sub-pixel comprises a second side parallel to the first direction, and wherein:
the first side of the first sub-pixel and the second side of the third sub-pixel located in the same row as the first sub-pixel are not located on a same straight line; and/or
a line connecting centers of the first sub-pixel and the third sub-pixel in the same row is inclined with respect to the first direction.

8. The display substrate of claim 1 , wherein, in one of the sub-pixel groups, as for the first sub-pixel and the third sub-pixel that are respectively located on two sides of the four second sub-pixels and located in the same row, the first sub-pixel has a first vertex close to the third sub-pixel, the third sub-pixel has a second vertex close to the first sub-pixel, and a distance between the first vertex and the second vertex in the first direction is equal to the shortest distance between the first sub-pixel and the third sub-pixel, and a line connecting the first vertex and the second vertex is inclined with respect to the first direction.

9. The display substrate of claim 1 , wherein, in one of the sub-pixel groups:
a size of each third sub-pixel in the second direction is greater than a size of each first sub-pixel in the second direction.

10. The display substrate of claim 1 , wherein, in one of the sub-pixel groups, a distance between centers of the two first sub-pixels is greater than a distance between centers of the two third sub-pixels.

11. The display substrate of claim 1 , wherein, in one of the sub-pixel groups, the four second sub-pixels have the same shape and the same area, and the four second sub-pixels are repeatedly arranged in the second direction.

12. The display substrate of claim 1 , wherein:
each first sub-pixel comprises a plurality of vertex angles, and at least one of the plurality of vertex angles of the first sub-pixel is an obtuse angle; and/or
each third sub-pixel comprises a plurality of vertex angles, and at least one of the plurality of vertex angles of

Assignees

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

Inventors

• Xiao Leifang
• Ji Fengli
• Du Sen

Classifications

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K59/353 Primary

  characterised by the geometrical arrangement of the RGB subpixels · CPC title

• C23C14/042 Primary

  using masks · CPC title

• C23C14/12

  Organic material · CPC title

• C23C14/24

  Vacuum evaporation · CPC title