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:
May. 20, 2025
Filed:
Mar. 30, 2021
Boe Technology Group Co., Ltd., Beijing, CN;
BOE Technology Group Co., Ltd., Beijing, CN;
Abstract
Provided are a display substrate, a preparation method thereof and a display apparatus. The display substrate includes a substrate, a drive circuit layer disposed on the substrate and a light emitting structure layer disposed on a side of the drive circuit layer away from the substrate, wherein the drive circuit layer includes a transistor, and the light emitting structure layer includes a first electrode, a pixel define layer, an organic light emitting layer and a second electrode, wherein the first electrode is connected with a drain electrode of the transistor, and the organic light emitting layer is located between the first electrode and the second electrode; the pixel define layer includes a plurality of first retaining walls and a plurality of second retaining walls.