US 12,464,930 B2
Flexible display substrate and manufacturing method therefor, and display device
Jinxiang Xue, Beijing (CN); Xiaolei Zhang, Beijing (CN); Zhongyuan Sun, Beijing (CN); Wenqi Liu, Beijing (CN); Kai Sui, Beijing (CN); Jingkai Ni, Beijing (CN); Xiang Zhou, Beijing (CN); Che An, Beijing (CN); and Guoqiang Wang, Beijing (CN)
Assigned to BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/763,919
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed May 12, 2021, PCT No. PCT/CN2021/093240
§ 371(c)(1), (2) Date Mar. 25, 2022,
PCT Pub. No. WO2021/254033, PCT Pub. Date Dec. 23, 2021.
Claims priority of application No. 202010544338.9 (CN), filed on Jun. 15, 2020.
Prior Publication US 2022/0344422 A1, Oct. 27, 2022
Int. Cl. H10K 59/80 (2023.01); H10K 50/80 (2023.01); H10K 50/844 (2023.01); H10K 59/122 (2023.01); H10K 71/00 (2023.01); H10K 59/12 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/8722 (2023.02) [H10K 50/80 (2023.02); H10K 50/844 (2023.02); H10K 59/122 (2023.02); H10K 71/00 (2023.02); H10K 59/1201 (2023.02); H10K 2102/311 (2023.02)] 12 Claims
OG exemplary drawing
 
1. A flexible display substrate, comprising:
a substrate base layer, peripheral side edges of the substrate base layer having a first stepped structure with a process performance, and the first stepped structure being configured to enable a film layer covering the first stepped structure to be easily broken at the first stepped structure;
a functional layer, located on the substrate base layer and exposing the first stepped structure; and
an inorganic encapsulation layer, covering side edges of the functional layer and extending to the first stepped structure of the side edges of the substrate base layer, wherein
the substrate base layer comprises a first-layer flexible substrate, a barrier layer, a second-layer flexible substrate, a buffer layer and an interlayer insulating layer which are sequentially provided; and
the first stepped structure comprises first steps formed on edges of the barrier layer and the second-layer flexible substrate.