US 11,871,620 B2
OLED display panel having fence structure under anode
Zhongshou Huang, Shanghai (CN)
Assigned to SeeYa Optronics, Ltd., Shanghai (CN)
Filed by SeeYa Optronics, Ltd., Shanghai (CN)
Filed on May 27, 2021, as Appl. No. 17/332,313.
Claims priority of application No. 202010865376.4 (CN), filed on Aug. 25, 2020.
Prior Publication US 2022/0069036 A1, Mar. 3, 2022
Int. Cl. H01L 27/32 (2006.01); H01L 51/50 (2006.01); H10K 59/122 (2023.01); H10K 50/15 (2023.01)
CPC H10K 59/122 (2023.02) [H10K 50/15 (2023.02)] 12 Claims
OG exemplary drawing
 
1. An organic light-emitting diode (OLED) panel, comprising:
a pixel array comprising a plurality of light-emitting elements; wherein
each of the plurality of light-emitting elements comprises a fence structure, a first electrode layer, a pixel definition layer, a first charge transport layer, a light-emitting layer, a second charge transport layer, and a second electrode layer, that which are stacked on a substrate in sequence; and
the pixel definition layer comprises an opening that exposes part of the first electrode layer; a vertical projection of the fence structure on the substrate is located inside a vertical projection of the opening on the substrate; a trench is formed between a sidewall of the fence structure and a sidewall of the opening, and the first charge transport layer comprises a discontinued portion in the trench;
wherein a vertical projection of the fence structure on the substrate exhibits a substantially ring shape, and the fence structure comprises at least one notch which has a depth larger than 25% of the height of the fence structure.