The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Nov. 29, 2021
Chengdu Boe Optoelectronics Technology Co., Ltd., Sichuan, CN;
Boe Technology Group Co., Ltd., Beijing, CN;
Nan Du, Beijing, CN;
Guowei Su, Beijing, CN;
Chiehhsing Chung, Beijing, CN;
Yongyi Fu, Beijing, CN;
Yong Zhou, Beijing, CN;
Feng Bai, Beijing, CN;
Saijun Sun, Beijing, CN;
Kaihao Chen, Beijing, CN;
Suoping Peng, Beijing, CN;
Kechao Song, Beijing, CN;
Zhengping Xu, Beijing, CN;
Sa Liu, Beijing, CN;
Hexiong Li, Beijing, CN;
Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan, CN;
Beijing BOE Technology Development Co., Ltd., Beijing, CN;
Abstract
Provided are a display substrate and a preparation method thereof, and a display apparatus. The display substrate includes a display region and at least one hole region located in the display region, the hole region includes a function hole and a partition region surrounding the function hole, the partition region is provided with at least one partition dam surrounding the function hole; the partition dam includes a first partition layer disposed on a base substrate and a second partition layer disposed on a side of the first partition layer away from the base substrate, at least one partition layer includes a second sub-layer and a third sub-layer disposed on a side of the second sub-layer away from the base substrate, the third sub-layer has a protrusion with respect to a sidewall of the second sub-layer, and the protrusion and the sidewall of the second sub-layer form an inwardly recessed structure.