US 12,295,239 B2
Flexible display panel, flexible display device
Shijian Qin, Guangdong (CN); and Wanliang Zhou, Guangdong (CN)
Assigned to Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen (CN)
Appl. No. 17/622,872
Filed by Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Guangdong (CN)
PCT Filed Dec. 9, 2021, PCT No. PCT/CN2021/136708
§ 371(c)(1), (2) Date Dec. 27, 2021,
PCT Pub. No. WO2023/097733, PCT Pub. Date Jun. 8, 2023.
Claims priority of application No. 202111450542.5 (CN), filed on Nov. 30, 2021.
Prior Publication US 2024/0040895 A1, Feb. 1, 2024
Int. Cl. H10K 59/80 (2023.01); H10K 59/12 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/80516 (2023.02) [H10K 59/1201 (2023.02); H10K 59/80522 (2023.02); H10K 2102/311 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A flexible panel with a light-emitting area and a non-light-emitting area surrounding the light-emitting area, comprising:
a substrate;
an auxiliary cathode arranged on the substrate and in the non-light-emitting area;
a separation layer arranged on the substrate and the auxiliary cathode and defining a first opening in the non-light-emitting area to expose an upper surface of the auxiliary cathode;
a passivation layer arranged on the separation layer, extending to a periphery edge of the first opening, and located above the auxiliary cathode;
an auxiliary anode arranged in the first opening, wherein a lower end of the auxiliary anode is connected to the upper surface of the auxiliary cathode, and an upper end of the auxiliary anode is located on the passivation layer;
an undercut structure formed in the passivation layer, comprising a hole area having a sidewall that is recessed inwardly relative to a left side or a right side of the upper end of the auxiliary anode; and
a cathode layer arranged on the auxiliary anode, wherein a left end and a right end of the cathode layer are respectively extended downward to connect with the left side and the right side of the upper end of the auxiliary anode.