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:
Jul. 28, 2026
Filed:
Dec. 16, 2020
Boe Technology Group Co., Ltd., Beijing, CN;
Haowei Wang, Beijing, CN;
BOE Technology Group Co., Ltd., Beijing, CN;
Abstract
A patterned quantum dot film layer, a quantum dot light-emitting device and a manufacturing method. The manufacturing method includes: forming a patterned mask layer on one side of a base substrate; forming a quantum dot thin film on the side of the mask layer that faces away from the base substrate, the quantum dot thin film includes quantum dot bodies and native ligands connected to the quantum dot bodies; forming, on the side of the quantum dot thin film that faces away from the mask layer, a ligand thin film that includes replacement ligands, and leaving same to stand for a first duration, such that the native ligands are replaced by the replacement ligands; performing cleaning by means of a cleaning solvent, removing unreacted replacement ligands and replaced native ligands; peeling off the mask layer, and removing together the quantum dot thin film attached to the mask layer.