US 12,171,134 B2
Display panel, and display device
Kai Hu, Wuhan (CN)
Assigned to WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Wuhan (CN)
Appl. No. 17/620,831
Filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Wuhan (CN)
PCT Filed Nov. 12, 2021, PCT No. PCT/CN2021/130374
§ 371(c)(1), (2) Date Dec. 20, 2021,
PCT Pub. No. WO2023/077549, PCT Pub. Date May 11, 2023.
Claims priority of application No. 20111305589.2 (CN), filed on Nov. 5, 2021.
Prior Publication US 2024/0032385 A1, Jan. 25, 2024
Int. Cl. H01L 27/14 (2006.01); H10K 59/123 (2023.01); H10K 59/124 (2023.01); H10K 59/38 (2023.01); H10K 59/40 (2023.01); H10K 59/80 (2023.01)
CPC H10K 59/80516 (2023.02) [H10K 59/123 (2023.02); H10K 59/124 (2023.02); H10K 59/38 (2023.02); H10K 59/40 (2023.02); H10K 59/873 (2023.02); H10K 59/8792 (2023.02)] 16 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a substrate;
a source and drain metal layer disposed at one side of the substrate;
a first planarization layer covering the source and drain metal layer;
an auxiliary metal layer disposed on a side of the first planarization layer away from the substrate, wherein the auxiliary metal layer and the source and drain metal layer together form a double-layer source and drain metal layer structure;
a second planarization layer covering the auxiliary metal layer;
an anode disposed at a side of the second planarization layer away from the substrate, wherein the auxiliary metal layer penetrates the first planarization layer and is electrically connected to the source and drain metal layer through a first via hole, and the anode penetrates the second planarization layer and is electrically connected to the auxiliary metal layer through a second via hole; and
a light emitting layer disposed at a side of the anode away from the substrate, comprising a plurality of light emitting pixels;
wherein the anode comprises a first anode part corresponding to the light emitting pixel, and an orthographic projection of the auxiliary metal layer on the substrate is outside an orthographic projection of the first anode part on the substrate;
wherein the auxiliary metal layer comprises a plurality of first lines and a plurality of second lines connected to one another, and the first lines extend along a first direction and the second lines extend along a second direction, and the first direction is different from the second direction;
an orthographic projection of the first line and an orthographic projection of the second line on the substrate are both outside the orthographic projection of the first anode part on the substrate;
wherein the first lines are disconnected at a position corresponding to the light emitting pixel to form a plurality of notches, and the second planarization layer fills the notches, and there is a gap between an edge of the orthographic projection of the notch on the substrate and an edge of the orthographic projection of the first anode part on the substrate.