US 11,895,863 B2
Display panel, manufacturing method thereof and display device
Heng Yang, Beijing (CN); Wei Li, Beijing (CN); Yanbo Zeng, Beijing (CN); and Yinglong Huang, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Filed on Sep. 27, 2021, as Appl. No. 17/486,702.
Claims priority of application No. 202011052137.3 (CN), filed on Sep. 29, 2020.
Prior Publication US 2022/0102679 A1, Mar. 31, 2022
Int. Cl. H10K 50/844 (2023.01); H10K 71/00 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/844 (2023.02) [H10K 71/00 (2023.02); H10K 2102/00 (2023.02); H10K 2102/351 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a substrate having a display area and a non-display area;
a planarization layer covering the display area and the non-display area of the substrate;
an organic light emitting element located in the display area and located at a side of the planarization layer away from the substrate;
an encapsulation structure wrapping the organic light emitting element, wherein the encapsulation structure comprises a first inorganic layer, an organic layer and a second inorganic layer which are sequentially stacked, the first inorganic layer and the second inorganic layer extend into the non-display area, and the first inorganic layer is arranged close to the planarization layer;
wherein the display panel further comprises:
a third inorganic layer, wherein the third inorganic layer is located in the non-display area and is located between the planarization layer and the first inorganic layer; and/or
a part of the planarization layer located in the non-display area is provided with a groove, and the groove is filled with a flexible water-oxidation resistant material;
wherein the display panel further comprises a fourth inorganic layer located in the display area and between the first inorganic layer and the organic layer, and a roughness of the fourth inorganic layer is greater than a roughness of the first inorganic layer.