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. 08, 2025
Filed:
Dec. 25, 2020
Applicant:
Boe Technology Group Co., Ltd., Beijing, CN;
Inventors:
Xueqin Chen, Beijing, CN;
Yang Liu, Beijing, CN;
Assignee:
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
Primary Examiner:
Int. Cl.
CPC ...
H10K 50/18 (2023.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 101/10 (2023.01);
U.S. Cl.
CPC ...
H10K 85/657 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 50/11 (2023.02); H10K 50/18 (2023.02); H10K 50/181 (2023.02); H10K 2101/10 (2023.02);
Abstract
An organic electroluminescent device, a display panel, a display device, and a light emitting device are described. The organic electroluminescent device includes an anode, an electron blocking layer, a buffer layer, an organic light emitting layer, and a cathode that are sequentially stacked. The thickness of the buffer layer is in a range from 1 nm to 100 nm. The material of the buffer layer comprises a compound shown in a first chemical formula as below: The organic electroluminescence device can improve the life of the device.