US 12,089,449 B2
Display panel and display apparatus
Haitao Huang, Beijing (CN); Chuanxiang Xu, Beijing (CN); Shi Shu, Beijing (CN); Yong Yu, Beijing (CN); and Renquan Gu, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/424,747
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Sep. 29, 2020, PCT No. PCT/CN2020/118992
§ 371(c)(1), (2) Date Jul. 21, 2021,
PCT Pub. No. WO2022/067551, PCT Pub. Date Apr. 7, 2022.
Prior Publication US 2022/0157903 A1, May 19, 2022
Int. Cl. H10K 59/122 (2023.01); H10K 50/86 (2023.01); H10K 59/121 (2023.01); H10K 59/38 (2023.01)
CPC H10K 59/122 (2023.02) [H10K 50/865 (2023.02); H10K 59/1213 (2023.02); H10K 59/38 (2023.02)] 13 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a base;
a pixel defining layer disposed on a side of the base, the pixel defining layer having a plurality of first openings;
a plurality of light-emitting devices disposed on a side of the base, at least a portion of each light-emitting device being located in a first opening, and the light-emitting device including a first electrode, a light-emitting layer, and a second electrode that are sequentially stacked in a direction perpendicular to the base and away from the base; and
at least one connection portion disposed on a side of the pixel defining layer away from the base, an orthogonal projection of a connection portion on the base being located within an orthogonal projection of the pixel defining layer on the base; the connection portion and the second electrode being made of a same material and disposed in a same layer, and the connection portion being electrically connected to at least two adjacent second electrodes; wherein
a surface of the connection portion away from the base has a plurality of protrusions, and the connection portion is configured to diffusely reflect external ambient light incident into the display panel; and
in the direction perpendicular to the base, dimensions of the plurality of protrusions are greater than 0 μm and less than or equal to 2 μm;
the display panel further comprising:
a planarization layer, the pixel defining layer and a first electrode layer where a plurality of first electrodes are located are disposed on a side of the planarization layer away from the base;
a surface, away from the base, of a portion of the planarization layer opposite to the connection portion is uneven; and
a surface of a portion of the pixel defining layer in contact with the uneven surface of the portion of the planarization layer is uneven, and matches both a shape of the uneven surface of the portion of the planarization layer and a shape of the connection portion.