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. 25, 2025
Filed:
Mar. 31, 2021
Applicant:
Boe Technology Group Co., Ltd., Beijing, CN;
Inventor:
Lei Chen, Beijing, CN;
Assignee:
Beijing BOE Technology Development Co., Ltd., Beijing, CN;
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/06 (2006.01); H10K 50/18 (2023.01); H10K 50/85 (2023.01); H10K 59/80 (2023.01); H10K 85/00 (2023.01); H10K 85/60 (2023.01); H10K 101/40 (2023.01);
U.S. Cl.
CPC ...
C09K 11/06 (2013.01); H10K 50/18 (2023.02); H10K 85/00 (2023.02); H10K 85/615 (2023.02); H10K 85/636 (2023.02); H10K 85/654 (2023.02); C09K 2211/1018 (2013.01); H10K 50/85 (2023.02); H10K 59/875 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 2101/40 (2023.02);
Abstract
Provided are a display substrate and a display apparatus. The display substrate includes a drive circuit layer and a light emitting structure layer stacked on a substrate. The light emitting structure layer includes an anode, a cathode, and an emitting layer, a hole block layer, and an electron transport layer disposed between the anode and the cathode; the hole block layer and the electron transport layer satisfy: EETL/EHBL>1; where EETL is the electromigration rate of the electron transport layer, and EHBL is the electromigration rate of the hole block layer.