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. 25, 2023
Filed:
Feb. 27, 2020
Applicant:
Beijing Summer Sprout Technology Co., Ltd., Beijing, CN;
Inventors:
Feng Li, Beijing, CN;
Le Wang, Beijing, CN;
Changqing Li, Beijing, CN;
Chi Yuen Raymond Kwong, Beijing, CN;
Chuanjun Xia, Beijing, CN;
Assignee:
BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD., Beijing, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 405/14 (2006.01); C07D 405/04 (2006.01); C07D 403/04 (2006.01); H01L 51/00 (2006.01); H01L 51/42 (2006.01); H10K 30/30 (2023.01); H10K 85/60 (2023.01);
U.S. Cl.
CPC ...
C07D 405/14 (2013.01); C07D 403/04 (2013.01); C07D 405/04 (2013.01); H10K 30/353 (2023.02); H10K 85/622 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02);
Abstract
An organic electroluminescent material and a device thereof are disclosed. The organic electroluminescent material uses a compound having a novel carbazole structure, and can be used as hole blocking material, host material in an electroluminescent device. These novel compounds can provide better device performance, such as obtaining device performance of very low driving-voltage, high efficiency, and long lifetime.