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:
Feb. 03, 2026
Filed:
Aug. 27, 2021
Beijing Boe Technology Development Co., Ltd., Beijing, CN;
Boe Technology Group Co., Ltd., Beijing, CN;
Wenhai Mei, Beijing, CN;
Beijing BOE Technology Development Co., Ltd., Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
Abstract
The present disclosure provides a light emitting device, a manufacturing method thereof, a display substrate, and a display apparatus. The light emitting device includes a first carrier transport layer, a light emitting layer and a second carrier transport layer sequentially stacked on a substrate, wherein the light emitting layer includes at least two quantum dot film layers, each of which includes quantum dots; the quantum dot film layer close to the first carrier transport layer further includes carrier auxiliary ligands, each of which is configured to be attached to a surface of a body of the quantum dot, and/or the quantum dot film layer close to the second carrier transport layer further includes carrier auxiliary ligands, each of which is configured to be attached to a surface of a body of the quantum dot.