US-12625405-B2 - Display substrate and display device

Abstract

The present disclosure provides a display substrate and a display device. The display substrate includes a plurality of sub-pixels in rows. The sub-pixels in each row includes first sub-pixels, second sub-pixels and third sub-pixels arranged alternately, and two adjacent rows of sub-pixels are arranged in a staggered manner. In every two adjacent rows of sub-pixels, each first sub-pixel in one row of sub-pixels and the second sub-pixel and the third sub-pixel adjacent to the first sub-pixel in another row of sub-pixels form a pixel. White brightness centers of the pixels in a same pixel row are located on a same straight line, and a brightness center of the first sub-pixel is not on a same straight line as the brightness centers of the second sub-pixel and the third sub-pixel located in a same sub-pixel row.

Inventors

• Lujiang HUANGFU
• Weiwei Wang
• Shanshan BAI
• Jiangnan Lu
• Wenxiu Zhu

Assignees

• BOE TECHNOLOGY GROUP CO., LTD.

Dates

Publication Date

20260512

Application Date

20220304

Priority Date

20210629

Claims (20)

1. 1 . A display substrate, comprising a plurality of sub-pixels in rows wherein the sub-pixels in each row comprise first sub-pixels, second sub-pixels and third sub-pixels arranged alternately, and two adjacent rows of sub-pixels are arranged in a staggered manner; in every two adjacent rows of sub-pixels, each first sub-pixel in one row of sub-pixels and the second sub-pixel and the third sub-pixel adjacent to the first sub-pixel in another row of sub-pixels form a pixel; and white brightness centers of the pixels in a same pixel row are located on a same straight line, and a brightness center of the first sub-pixel is not on a same straight line as the brightness centers of the second sub-pixel and the third sub-pixel located in a same sub-pixel row; the first sub-pixel, the second sub-pixel, and the third sub-pixel in the pixel extend in different directions, wherein an extending direction of a sub-pixel in the plurality of sub-pixels is a maximum extension direction of the sub-pixel.
2. 2 . The display substrate according to claim 1 , wherein the brightness centers of the first sub-pixels in a same sub-pixel row are on a same straight line.
3. 3 . The display substrate according to claim 1 , wherein the brightness center of the second sub-pixel and the brightness center of the third sub-pixel in a same sub-pixel row are on a same straight line.
4. 4 . The display substrate according to claim 1 , wherein the white brightness centers of the pixels in a same pixel column are located on a same straight line.
5. 5 . The display substrate according to claim 4 , wherein the sub-pixels of each pixel in a same pixel column are arranged in a same mode.
6. 6 . The display substrate according to claim 1 , wherein the sub-pixels in a same sub-pixel column are in a same color.
7. 7 . The display substrate according to claim 1 , wherein a line connecting the brightness center of the first sub-pixel, the brightness center of the second sub-pixel and the brightness center of the third sub-pixel forms an isosceles triangle or an equilateral triangle.
8. 8 . The display substrate according to claim 1 , wherein the first sub-pixel is a green sub-pixel, one of the second sub-pixel and the third sub-pixel is a red sub-pixel, and the other of the second sub-pixel and the third sub-pixel is a blue sub-pixel.
9. 9 . The display substrate according to claim 8 , wherein the display substrate is an Organic Light-Emitting Diode (OLED) display substrate, an area of the red sub-pixel is S 1 , an area of the green sub-pixel is S 2 , an area of the blue sub-pixel is S 3 , and S 1 <S 2 <S 3 .
10. 10 . The display substrate according to claim 1 , wherein the display substrate is a Liquid Crystal Display (LCD) substrate, and an area of the red sub-pixel, an area of the green sub-pixel and an area of the blue sub-pixel are equal.
11. 11 . The display substrate according to claim 1 , wherein each of the first sub-pixel, the second sub-pixel and the third sub-pixel is of a rectangular, hexagonal or diamond shape.
12. 12 . The display substrate according to claim 11 , wherein adjacent sides of two adjacent sub-pixels in different colors are parallel to each other.
13. 13 . The display substrate according to claim 12 , wherein the adjacent sides of two adjacent sub-pixels in different colors parallel to each other are perpendicular to a line connecting the brightness centers of the two sub-pixels in different colors.
14. 14 . The display substrate according to claim 1 , wherein the second sub-pixel and the third sub-pixel are of a same shape, and the first sub-pixel is of a shape different from the second sub-pixel and the third sub-pixel.
15. 15 . The display substrate according to claim 1 , wherein each sub-pixel is equally spaced from the other surrounding sub-pixels.
16. 16 . A display device, comprising the display substrate according to claim 1 .
17. 17 . The display device according to claim 16 , wherein the brightness centers of the first sub-pixels in a same sub-pixel row are on a same straight line.
18. 18 . The display device according to claim 16 , wherein the brightness center of the second sub-pixel and the brightness center of the third sub-pixel in a same sub-pixel row are on a same straight line.
19. 19 . The display device according to claim 16 , wherein the white brightness centers of the pixels in a same pixel column are located on a same straight line.
20. 20 . The display device according to claim 19 , wherein the sub-pixels of each pixel in a same pixel column are arranged in a same mode.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is the U.S. national phase of PCT Application No. PCT/CN2022/079290 filed on Mar. 4, 2022, which claims a priority of the Chinese patent application No. 202110725455.X filed on Jun. 29, 2021, which is incorporated herein by reference in its entirety. TECHNICAL FIELD The present disclosure relates to the field of display technology, in particular to a display substrate and a display device. BACKGROUND Pixel is a smallest independent unit of a display device for exhibiting an image, and for a color display device, the pixel needs to include sub-pixels in three primary colors, i.e., red (R), green (G), and blue (B), so as to independently exhibit various colors in a color space. Usually, a pixel consisting of the red, green and blue subpixels is called as a real RGB pixel. Currently, a real RGB pixel format is adopted by the mainstream color display device, and it includes pixel constitution and corresponding image signals for the color display device. In order to achieve high-quality display, Pixel Per Inch (PPI) of the color display device increases along with the technological progress, but the difficulty in the manufacture of a display element increases due to the high PPI. Especially for an Active Matrix Organic Light-Emitting Diode (AMOLED) display device for mobile display, due to the limitation of a mainstream technique for patterning a light-emitting region of the sub-pixel (i.e., a Fine Metal Mask (FMM) technique), it is difficult to manufacture the high-PPI display device. Apart from an enhanced process ability and the use of a low-redundancy dummy pixels, in real RGB pixel architecture, it is also able to manufacture the high-PPI display device through a more appropriate arrangement mode of the RGB sub-pixels. The pixel in a Delta RGB arrangement mode is used to increase the PPI of the display device. In this mode, the sub-pixels in the three primary colors (brightness centers) form three vertices of an equilateral triangle, and the equilateral triangle is turned upside down and then translated transversely by one pixel pitch to form an adjacent pixel. The two pixels adjacent to each other in a transverse direction and having different configurations form a minimum repeat unit. The repeat unit is translated upward, downward, leftward and rightward to form an entire display region. In the Delta RGB arrangement mode, the sub-pixels in the primary colors are distributed evenly, and a process for forming the light-emitting region of the sub-pixel is provided with excellent directional balance, so it is able to provide a high aperture ratio of the sub-pixel and a high physical distribution ratio in the case of an equal process accuracy (a same width of a Pixel Definition Layer (PDL)). In addition, in the Delta RGB arrangement mode, it is also able to improve the quality of patterns and colors. However, in the case of the insufficient PPI, in the delta RGB arrangement mode, a transverse line displayed by the display device is a wavy line to some extent, so it is unsuitable for such applications as Office where a large quantity of patterns with fine lines, e.g., Chinese characters including a large quantity of straight lines. Hence, the use of the Delta RGB arrangement mode is restricted. SUMMARY An object of the present disclosure is to provide a display substrate and a display device, so as to prevent the occurrence of a wavy transverse line in the Delta RGB arrangement mode. In order to solve the above-mentioned technical problem, the present disclosure provides the following technical solutions. In a first aspect, the present disclosure provides in some embodiments a display substrate, including a plurality of sub-pixels in rows. The sub-pixels in each row includes first sub-pixels, second sub-pixels and third sub-pixels arranged alternately, and two adjacent rows of sub-pixels are arranged in a staggered manner. In every two adjacent rows of sub-pixels, each first sub-pixel in one row of sub-pixels and the second sub-pixel and the third sub-pixel adjacent to the first sub-pixel in another row of sub-pixels form a pixel. White brightness centers of the pixels in a same pixel row are located on a same straight line, and a brightness center of the first sub-pixel is not on a same straight line as the brightness centers of the second sub-pixel and the third sub-pixel located in a same sub-pixel row. In a possible embodiment of the present disclosure, the brightness centers of the first sub-pixels in a same sub-pixel row are on a same straight line. In a possible embodiment of the present disclosure, the brightness center of the second sub-pixel and the brightness center of the third sub-pixel in a same sub-pixel row are on a same straight line. In a possible embodiment of the present disclosure, the white brightness centers of the pixels in a same pixel column are located on a same straight line. In a possible embodiment of the present disclosure, t