US 11,690,241 B2
OLED with auxiliary electrode contacting electron transport layer
Shipan Wang, Shenzhen (CN); Ting Shi, Shenzhen (CN); and Weiran Cao, Shenzhen (CN)
Appl. No. 16/980,442
Filed by SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Shenzhen (CN)
PCT Filed May 21, 2020, PCT No. PCT/CN2020/091447
§ 371(c)(1), (2) Date Oct. 16, 2020,
PCT Pub. No. WO2021/227115, PCT Pub. Date Nov. 18, 2021.
Claims priority of application No. 202010385100.6 (CN), filed on May 9, 2020.
Prior Publication US 2021/0351371 A1, Nov. 11, 2021
Int. Cl. H01L 51/50 (2006.01); H01L 27/32 (2006.01); H01L 51/52 (2006.01); H01L 51/56 (2006.01); H10K 50/16 (2023.01); H10K 50/15 (2023.01); H10K 50/17 (2023.01); H10K 50/86 (2023.01); H10K 59/122 (2023.01); H10K 71/00 (2023.01)
CPC H10K 50/16 (2023.02) [H10K 50/15 (2023.02); H10K 50/171 (2023.02); H10K 50/865 (2023.02); H10K 59/122 (2023.02); H10K 71/00 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a driving circuit layer comprising a first surface and a second surface disposed opposite to each other;
a first electrode layer partially covering the first surface;
an auxiliary electrode layer partially covering the first surface, wherein the auxiliary electrode layer and the first electrode layer are disposed at a same level, and a gap is defined between the auxiliary electrode layer and the first electrode layer;
a pixel definition layer covering the driving circuit layer, the first electrode layer, and the auxiliary electrode layer, wherein a first via hole is defined on the pixel definition layer; and
an electron transport layer disposed on a side of the pixel definition layer away from the driving circuit layer and connected to the auxiliary electrode layer through the first via hole;
wherein an energy level difference between a lowest unoccupied molecular orbital of the electron transport layer and a work function of the auxiliary electrode layer is 2.0 eV or less.