US 12,484,388 B2
Display substrate, manufacturing method thereof and display device
Huajie Yan, Beijing (CN); Xiaohu Li, Beijing (CN); Renquan Gu, Beijing (CN); and Qingyu Huang, Beijing (CN)
Assigned to Beijing BOE Technology Development Co., Ltd., Beijing (CN)
Appl. No. 17/762,378
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed May 26, 2021, PCT No. PCT/CN2021/096094
§ 371(c)(1), (2) Date Mar. 22, 2022,
PCT Pub. No. WO2022/246694, PCT Pub. Date Dec. 1, 2022.
Prior Publication US 2023/0225169 A1, Jul. 13, 2023
Int. Cl. H10K 59/124 (2023.01); H10K 59/12 (2023.01); H10K 59/35 (2023.01); H10K 59/80 (2023.01); H10K 71/00 (2023.01); H10K 77/00 (2023.01)
CPC H10K 59/124 (2023.02) [H10K 59/1201 (2023.02); H10K 59/353 (2023.02); H10K 59/80518 (2023.02); H10K 59/875 (2023.02); H10K 71/00 (2023.02); H10K 77/00 (2023.02); H10K 59/80515 (2023.02)] 14 Claims
OG exemplary drawing
 
1. A display substrate, comprising a base and a plurality of pixel units disposed on the base, wherein:
at least one pixel unit of the plurality of pixel units comprises a plurality of sub-pixels with different colors, and at least one sub-pixel of the plurality of sub-pixels comprises a plurality of sub-pixel components with the same color;
anodes of the plurality of sub-pixel components are electrically connected with driving circuits, the driving circuits are independent of each other, and in a plane perpendicular to the display substrate, a side of an anode of at least one sub-pixel component of the plurality of sub-pixel components away from the base at least comprises a part of a surface, and a normal of the part of the surface is not perpendicular to the base; and
the anode of the at least one sub-pixel component comprises a first conductive layer, a reflective layer, and a second conductive layer which are stacked,
wherein the first conductive layer and the second conductive layer each have a thickness of 10 nm to 50 nm; and the reflective layer has a thickness of 80 nm to 200 nm, and
in the plane perpendicular to the display substrate, the display substrate comprises the base, and a planarization layer, the anodes of the plurality of sub-pixel components, an organic light emitting layer and a cathode which are stacked sequentially on the base, and in at least one sub-pixel region, the planarization layer comprises a plurality of protrusions corresponding to the plurality of sub-pixel components one-to-one;
the base comprises a plurality of driving circuits, the planarization layer is disposed with a plurality of vias, and the anode of the at least one sub-pixel component is electrically connected with a driving circuit through a via on the planarization layer, and
in the at least one sub-pixel region, the plurality of protrusions are a plurality of spherical crown-shaped protrusions arranged on the base in an array or a row-by-row staggered arrangement, or the plurality of protrusions are a plurality of semi-cylinder-shaped protrusions arranged on the base in rows or columns.