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. 15, 2022
Filed:
Dec. 25, 2019
Ordos Yuansheng Optoelectronics Co., Ltd., Inner Mongolia, CN;
Boe Technology Group Co., Ltd., Beijing, CN;
Zhao Zhang, Beijing, CN;
Ruichao Liu, Beijing, CN;
Xiaofeng Zhang, Beijing, CN;
Xuelu Wang, Beijing, CN;
ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., Inner Mongolia, CN;
BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., Beijing, CN;
Abstract
An electron transport layer includes a first electron transport film and a second electron transport film. The second electron transport film is disposed at a side of the first electron transport film and is stacked with the first electron transport film. An energy level of a conduction band of a material included in the second electron transport film is greater than an energy level of a conduction band of a material included in the first electron transport film, and the energy level of the conduction band of the material included in the second electron transport film is less than an energy level of a conduction band of a material included in the light-emitting layer.