US 11,673,363 B2
Rollable display panel and manufacturing method thereof, and display device
Yongxiang Shi, Beijing (CN); Paoming Tsai, Beijing (CN); Xuekai Yang, Beijing (CN); Xiongnan Zhang, Beijing (CN); Shuang Du, Beijing (CN); Jiahao Zhang, Beijing (CN); and Ziang Han, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed on May 27, 2021, as Appl. No. 17/331,747.
Claims priority of application No. 202010863001.4 (CN), filed on Aug. 25, 2020.
Prior Publication US 2022/0063235 A1, Mar. 3, 2022
Int. Cl. B32B 3/26 (2006.01); B32B 7/022 (2019.01); B32B 7/12 (2006.01); B32B 17/10 (2006.01)
CPC B32B 3/263 (2013.01) [B32B 7/022 (2019.01); B32B 7/12 (2013.01); B32B 17/10 (2013.01); B32B 2307/51 (2013.01); B32B 2307/732 (2013.01); B32B 2457/20 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A rollable display panel, comprising:
a first structure layer;
a second structure layer; and
a first adhesive layer stacked between the first structure layer and the second structure layer; and
wherein the rollable display panel is divided into a rollable area, a strain accumulation area, and a flat area distributed in sequence along a rolling direction; and
wherein a thickness of a part of the first adhesive layer located in the strain accumulation area is greater than a thickness of a part of the first adhesive layer located in the rollable area and is also greater than a thickness of a part of the first adhesive layer located in the flat area;
wherein:
the first structure layer is a flexible cover plate, the second structure layer is a flexible array substrate, and the flexible cover plate comprises:
a first ultra-thin glass layer arranged on a side of the first adhesive layer away from the flexible array substrate;
a first polymer thin film arranged on a side of the first ultra-thin glass layer away from the flexible array substrate; and
a first hardening layer arranged on a side of the first polymer thin film away from the flexible array substrate; and
a side of the first ultra-thin glass layer facing the first polymer thin film has a rolling edge which is used for rolling and has a chamfer;
wherein the chamfer extends to a surface of the first ultra-thin glass layer away from the first polymer thin film.