Display substrate and display device having light-transmitting openings and light-transmitting portions

Patent metadata

Field	Value
Publication number	US-12520664-B2
Application number	US-202117796490-A
Country	US
Kind code	B2
Filing date	Nov 4, 2021
Priority date	Jan 26, 2021
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

A display substrate and a display device are disclosed, the display substrate has a plurality of sub-pixels arranged in an array, and includes a base substrate, a driving circuit layer, a light-emitting device layer, and a black matrix layer. Each sub-pixel includes a pixel driving circuit in the driving circuit layer and a light-emitting device in the light-emitting device layer, and the black matrix layer includes a plurality of first light-transmitting openings respectively exposing light-emitting devices (EM) of the plurality of sub-pixels, and includes a plurality of second light-transmitting openings respectively between the plurality of first light-transmitting openings. The driving circuit layer includes a plurality of light-transmitting portions, and each of the plurality of second light-transmitting openings is provided corresponding to at least one of the plurality of light-transmitting portions for transmitting light in a predetermined angle range with the surface of the display substrate.

First claim

What is claimed is:

1 . A display substrate, having a plurality of sub-pixels arranged in an array, and comprising a base substrate, a driving circuit layer on the base substrate, a light-emitting device layer on a side of the driving circuit layer away from the base substrate, and a black matrix layer on a side of the light-emitting device layer away from the base substrate,
wherein each of the plurality of sub-pixels comprises a pixel driving circuit in the driving circuit layer and a light-emitting device in the light-emitting device layer, the pixel driving circuit is configured to drive the light-emitting device, the black matrix layer comprises a plurality of first light-transmitting openings respectively exposing light-emitting devices of the plurality of sub-pixels in a direction perpendicular to a surface of the base substrate, and a plurality of second light-transmitting openings respectively between the plurality of first light-transmitting openings; and the driving circuit layer comprises a plurality of light-transmitting portions, and each of the plurality of second light-transmitting openings is provided corresponding to at least one of the plurality of light-transmitting portions for transmitting light in a predetermined angle range with the surface of the display substrate; the plurality of sub-pixels comprise a first sub-pixel and a second sub-pixel, and the plurality of light-transmitting portions comprise a first light-transmitting portion comprised in a pixel driving circuit of the first sub-pixel and a second light-transmitting portion comprised in a pixel driving circuit of the second sub-pixel; in the direction perpendicular to the surface of the base substrate, the plurality of second light-transmitting openings comprise a first light-transmitting sub-opening at least partially overlapping with the first light-transmitting portion and a second light-transmitting sub-opening at least partially overlapping with the second light-transmitting portion; and in a direction parallel to the surface of the base substrate, a plane shape of the first light-transmitting sub-opening is different from a plane shape of the second light-transmitting sub-opening; a ratio of an area of the first light-transmitting sub-opening to an area of the second light-transmitting sub-opening is greater than or equal to 2.

2 . The display substrate according to claim 1 , wherein the plurality of sub-pixels further comprise a third sub-pixel, a pixel driving circuit of the third sub-pixel has a third light-transmitting portion, and in the direction perpendicular to the surface of the base substrate, the plurality of second light-transmitting openings further comprise a third light-transmitting sub-opening at least partially overlapping with the third light-transmitting portion; and
in the direction parallel to the surface of the base substrate, a plane shape of the third light-transmitting sub-opening is different from the plane shape of the first light-transmitting sub-opening and the plane shape of the second light-transmitting sub-opening, and an area of the third light-transmitting sub-opening is larger than the area of the second light-transmitting sub-opening, and is substantially equal to the area of the first light-transmitting sub-opening.

3 . The display substrate according to claim 2 , wherein the plurality of sub-pixels further comprise a fourth sub-pixel, a pixel driving circuit of the fourth sub-pixel has a fourth light-transmitting portion, and in the direction perpendicular to the surface of the base substrate, the plurality of second light-transmitting openings further comprise a fourth light-transmitting sub-opening at least partially overlapping with the fourth light-transmitting portion; and
in the direction parallel to the surface of the base substrate, a plane shape of the fourth light-transmitting sub-opening is different from the plane shape of the first light-transmitting sub-opening, the plane shape of the second light-transmitting sub-opening, and the plane shape of the third light-transmitting sub-opening, and an area of the fourth light-transmitting sub-opening is smaller than the area of the third light-transmitting sub-opening and the area of the first light-transmitting sub-opening, respectively, and is larger than the area of the second light-transmitting sub-opening.

4 . The display substrate according to claim 3 , wherein a ratio of the area of the first light-transmitting sub-opening, the area of the second light-transmitting sub-opening, the area of the third light-transmitting sub-opening, and the area of the fourth light-transmitting sub-opening is in a range of (3˜4):1:(3˜4):(2.5˜3.5).

5 . The display substrate according to claim 3 , wherein the first sub-pixel is a red sub-pixel, the second sub-pixel is a green sub-pixel, the third sub-pixel is a blue sub-pixel, and the fourth sub-pixel is a green sub-pixel; and
one first sub-pixel, one second sub-pixel, one third sub-pixel, and one fourth sub-pixel are configured as a repeating unit, and a plurality of repeating units are arranged in an array on the base substrate.

6 . The display substrate according to claim 5 , further comprising a color film layer, wherein the color film layer comprises a plurality of color film patterns respectively covering the plurality of first light-transmitting openings;
in the direction perpendicular to the surface of the base substrate, the plurality of color film patterns comprise a first color film pattern at least partially overlapping with a light-emitting device of the first sub-pixel and a second color film pattern at least partially overlapping with a light-emitting device of the second sub-pixel; and in the direction parallel to the surface of the base substrate, a plane shape of the first color film pattern is different from a plane shape of the second color film pattern, and an area of the first color film pattern is larger than an area of the second color film pattern.

7 . The display substrate according to claim 6 , wherein the first color film pattern is substantially rectangular, and the second color film pattern is substantially semi-elliptical.

8 . The display substrate according to claim 6 , wherein the plurality of color film patterns further comprise a third color film pattern at least partially overlapping with a light-emitting device of the third sub-pixel; and
in the direction parallel to the surface of the base substrate, a plane shape of the third color film pattern is different from the plane shape of the first color film pattern and the plane shape of the second color film pattern, and an area of the third color film pattern is larger than the area of the first color film pattern and the area of the second color film pattern, respectively.

9 . The display substrate according to claim 8 , wherein a ratio of the area of the first color film pattern, the area of the second color film pattern, and the area of the third color film pattern is in a range of (1˜1.5):1:(1˜1.6).

10 . The display substrate according to claim 8 , wherein in the direction perpendicular to the surface of the base substrate, the plurality of color film patterns further comprise a fourth color film pattern at least partially overlapping with a light-emitting device of the fourth sub-pixel; and
in the direction parallel to the surface of the base substrate, a plane shape of the fourth color film pattern is substantially same as the plane shape of the second color film pattern, and an area of the fourth color film pattern is substantially equal to the area of the second color film pattern; in the direction perpendicular to the surface of the base substrate, the fourth color film pattern partia

Assignees

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

Inventors

• Li Shuo
• Guo Dan
• Hu Yao

Classifications

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K50/865

  comprising light absorbing layers, e.g. light-blocking layers · CPC title

• H10K59/80521

  characterised by their shape · CPC title

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title