Display panel and display device

Patent metadata

Field	Value
Publication number	US-12282230-B2
Application number	US-202418610520-A
Country	US
Kind code	B2
Filing date	Mar 20, 2024
Priority date	Mar 31, 2020
Publication date	Apr 22, 2025
Grant date	Apr 22, 2025

Abstract

A display panel includes a display region and a photoelectric sensing region, a plurality of spacer, a plurality of first support pillars, a plurality of second support pillars, and a plurality of third support pillars. The display region is located outside the photoelectric sensing region; and the photoelectric sensing region includes a light transmitting region and a frame area surrounding the light transmitting region, and the frame region includes: a first region, a second region, and a third region. The plurality of the spacers are arranged in an array, and located within the display region, but not located within the light transmitting region. The plurality of the first support pillars are located within the first region. The plurality of the second support pillars are located within the second region. The plurality of the third support pillars are located within the third region.

First claim

The invention claimed is:

1. A display panel comprising:
a display region and a photoelectric sensing region, wherein the display region is located outside the photoelectric sensing region, the display region comprises a plurality of pixels arranged in an array, each pixel of the plurality of the pixels comprises a plurality of color sub-pixels; and the photoelectric sensing region comprises a light transmitting region and a frame region that surrounds the light transmitting region, wherein the frame region comprises:
a first region surrounding the light transmitting region;
a second region located on a side of the first region away from the light transmitting region and surrounding the first region; and
a third region located on a side of a second region away from the light transmitting region and located between the second region and the display region to separate the second region from the display region;

a plurality of spacers arranged in an array, wherein the plurality of the spacers is located inside the display region while outside of the light transmitting region;
a plurality of first support pillars located inside the first region, arranged around the light transmitting region, and spaced away from each other;
a plurality of second support pillars located inside the second region, arranged around the second region, and spaced away from each other; and
a plurality of third support pillars located in the third region and arranged in an array, wherein the display panel further comprises:
a first substrate;
a second substrate opposite to the first substrate;
a black matrix located on a side of the second substrate adjacent to the first substrate, covering the frame region, and defining the plurality of the color sub-pixels in the display region;
a protection layer located in the second substrate and located on a side of the black matrix adjacent to the first substrate, covering the frame region and the display region, wherein the plurality of the spacers, the plurality of the first support pillars, the plurality of the second support pillars, and the plurality of the third support pillars are located between the first substrate and the protection layer to maintain a distance between the first substrate and the second substrate; and
a spacer layer located in a region which is on a side of the first region away from the light transmitting region, and is located between the black matrix and the protection layer, wherein the plurality of the second support pillars and the third support pillars are in the region surrounding the first region, and orthographic projections of the plurality of the second support pillars or the plurality of the third support pillars on the first substrate are respectively located within an orthographic projection of the spacer layer on the first substrate, wherein
the spacer layer comprises a second spacer layer located in the third region and located between the black matrix and the protection layer, and the orthographic projections of the plurality of the third support pillars are located within an orthographic projection of the second spacer layer on the first substrate.

2. The display panel according to claim 1 , wherein the spacer layer comprises a first spacer layer located in the second region and located between the black matrix and the protection layer, and the orthographic projections of the plurality of the second support pillars are located within an orthographic projection of the first spacer layer on the first substrate.

3. The display panel according to claim 1 , wherein orthographic projections of the plurality of the spacers, orthographic projections of the plurality of the first support pillars, orthographic projections of the plurality of the second support pillars, and orthographic projections of the plurality of the third support pillars on the first substrate are located within an orthographic projection of the black matrix on the first substrate.

4. The display panel according to claim 1 , wherein a planar arrangement pattern of the plurality of the first support pillars comprises at least a ring;
the planar arrangement pattern of the plurality of the first support pillars comprises a plurality of concentric rings;
along radial directions of the concentric rings, the first support pillars in the plurality of the concentric rings are aligned with each other, or the first support pillars in adjacent concentric rings of the plurality of the concentric rings are staggered to each other.

5. The display panel according to claim 4 , wherein a ratio of a total area of the orthographic projections of the plurality of the first support pillars on the first substrate to a total area of the orthographic projections of the plurality of the second support pillars on the first substrate is from 5 to 10.

6. The display panel according to claim 5 , wherein a distance between centers of two adjacent the first support pillars among the plurality of the first support pillars of the same concentric ring is equal to a length or a width of a pixel in the display region.

7. The display panel according to claim 1 , wherein the first spacer layer and the second spacer layer are integrated, or spaced away from each other by the protection layer.

8. The display panel according to claim 1 , further comprising:
a color film layer located on a side of the second substrate adjacent to the first substrate and comprises a first portion, a second portion and a third portion, wherein
the first portion of the color film layer is located in the plurality of the color sub-pixels in the display region, and an orthographic projection of the first portion of the color film layer on the first substrate does not overlap with the orthographic projection of the black matrix on the first substrate;
the second portion of the color film layer is located in the second region and configured as the first spacer layer, and an orthographic projection of the second portion of the color film layer in the first substrate overlaps with the orthographic projection of the black matrix in the first substrate; and
the third portion of the color film layer is located inside the third region and configured as the second spacer layer.

9. The display panel according to claim 8 , wherein the plurality of the spacers located in the display region comprise a plurality of primary spacers and a plurality of secondary spacers, a height of the primary spacers in the direction vertical to the first substrate is greater than a height of the secondary spacers in the direction vertical to the first substrate;
a shape and size of each of the plurality of the second support pillars and a shape and size of each of the plurality of the third support pillars are identical with a shape and size of each of the plurality of the secondary spacers; and
a shape and size of each of the plurality of the first support pillars are identical with a shape and size of each of the plurality of the primary spacers.

10. The display panel according to claim 8 , further comprising a plurality of light transmitting regions, wherein two adjacent light transmitting regions comprise a first light transmitting region and a second light transmitting region, respectively;
the display panel further comprises:
an intermediate region located between the second region surrounding the first light transmitting region and the second surrounding the second light transmitting region;
a third spacer layer arranged to be in a same layer as the first spacer layer and in connection with the first spacer layer, and comprising a first portion and a second portion, wherein the first portion and the second portion are opposed to each other in a direction, which is in

Assignees

• Boe Technology Group Co Ltd

Inventors

• Chen Kai
• Chen Yanqing
• Liu Ruichao
• Tong Jie
• Zhang Xiaofeng
• Qin Weida
• Wang Ning
• Wang Yan
• Li Wei
• Xin Haoyi

Classifications

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title

• H10K59/8792

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

• H10K59/8723

  Vertical spacers, e.g. arranged between the sealing arrangement and the OLED · CPC title

• G02F1/13394 Primary

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title

• G02F1/133514

  Colour filters · CPC title