US 12,150,333 B2
Display panel and preparation method thereof, and display apparatus
Li Song, Beijing (CN); and Zhiliang Jiang, 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 Jun. 15, 2020, as Appl. No. 16/901,018.
Claims priority of application No. 201911319660.5 (CN), filed on Dec. 19, 2019.
Prior Publication US 2021/0193960 A1, Jun. 24, 2021
Int. Cl. H10K 50/844 (2023.01); H10K 59/122 (2023.01); H10K 59/124 (2023.01); H10K 59/12 (2023.01)
CPC H10K 50/844 (2023.02) [H10K 59/122 (2023.02); H10K 59/124 (2023.02); H10K 59/1201 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display panel, comprising a display area and a frame area located at a side of the display area, wherein
the frame area comprises a transition area close to the display area and an outer edge area remote from the display area,
the transition area of the display panel is of a structure comprising a base structure layer, an insulating layer disposed on the base structure layer, a construction structure disposed on the insulating layer, and a first inorganic encapsulation layer and an organic encapsulation layer sequentially disposed on the construction structure, and
the first inorganic encapsulation layer has a concave-convex structure in the transition area; wherein
the outer edge area comprises a hollow structure disposed at a location of the insulating layer close to an outer edge of the display panel, and an anti-crack dam which covers the hollow structure and is disposed at a location of the hollow structure; wherein the hollow structure comprises multiple columns sequentially disposed at intervals;
the construction structure of the transition area comprises multiple columnar bodies which are sequentially disposed at intervals, and the first inorganic encapsulation layer covers the multiple columnar bodies to form the concave-convex structure in the transition area; the outer edge area comprises multiple banks which are sequentially disposed at intervals; the multiple columnar bodies and the multiple banks are arranged on a same layer;
the multiple banks comprises a first bank which is disposed on the insulating layer and closest to the organic encapsulation layer;
the display panel further comprises a second inorganic encapsulation layer, a horizontal straight line segment of the second inorganic encapsulation layer is located between the organic encapsulation layer and the first bank, closest to the organic encapsulation layer, of the multiple banks, the horizontal straight line segment is located at a side of all banks of the multiple banks, and a height of the horizontal straight line segment is less than all heights of all banks of the multiple banks, and the horizontal straight line segment separates the organic encapsulation layer from the first inorganic encapsulation layer covering all of the banks of the multiple banks.