US 12,245,477 B2
Display panel including light emitting diodes with improved electrical connection of cathodes, method of manufacturing the same, and display device
Huajun Feng, Shenzhen (CN)
Assigned to SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Shenzhen (CN)
Appl. No. 17/762,035
Filed by SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Shenzhen (CN)
PCT Filed Feb. 25, 2022, PCT No. PCT/CN2022/077966
§ 371(c)(1), (2) Date Mar. 18, 2022,
PCT Pub. No. WO2023/155232, PCT Pub. Date Aug. 24, 2023.
Claims priority of application No. 202210146994.2 (CN), filed on Feb. 17, 2022.
Prior Publication US 2024/0147784 A1, May 2, 2024
Int. Cl. H10K 59/131 (2023.01); H10K 59/12 (2023.01); H10K 59/80 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/131 (2023.02) [H10K 59/1201 (2023.02); H10K 59/873 (2023.02); H10K 2102/3026 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a driving layer comprising a plurality of driving units arranged at intervals;
a plurality of anodes disposed on a side of the driving units;
a light-emitting portion disposed on a side of the anodes away from the driving units;
a plurality of cathodes disposed on a side of the light-emitting portion away from the driving units;
an encapsulation layer disposed on a side of the cathodes away from the driving units, wherein the encapsulation layer is provided with a plurality of via holes to expose the cathodes corresponding to each of the driving units;
a plurality of conductive portions correspondingly disposed in the plurality of via holes; and
a conductive layer disposed on a side of the encapsulation layer away from the driving units, wherein the conductive layer is connected to each of the cathodes through a corresponding one of the conductive portions in the via holes, so that each of the cathodes is connected to the conductive layer in parallel;
wherein the display panel further comprises:
a plurality of first metal portions disposed on a side of the driving units away from the light-emitting portion, wherein one of the first metal portions is connected to corresponding one of the driving units;
a second metal portion disposed in a same layer as the first metal portion and spaced apart from the first metal portions;
a conductive gold ball directly connected to the conductive layer and the second metal portion.