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:
Apr. 26, 2022
Filed:
Mar. 20, 2020
Beijing Boe Technology Development Co., Ltd., Beijing, CN;
Boe Technology Group Co., Ltd., Beijing, CN;
Aidi Zhang, Beijing, CN;
Zhenqi Zhang, Beijing, CN;
BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
Abstract
A display substrate, comprising a plurality of light emitting units of different colors, each of which comprises: an electron transport layer, a hole transport layer, a quantum-dot light emitting layer located between the electron transport layer and the hole transport layer; and a hydrophilicity and hydrophobicity variable layer, located between the electron transport layer and the quantum-dot light emitting layer and configured to undergo an exposure treatment to change hydrophilicity and hydrophobicity of sides of the hydrophilicity and hydrophobicity variable layer that are in contact with the electron transport layer and the quantum-dot light emitting layer.