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:
Oct. 25, 2022
Filed:
May. 23, 2018
Applicant:
Kyushu University, National University Corporation, Fukuoka, JP;
Inventors:
Assignee:
KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, Fukuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/00 (2006.01); C07D 251/24 (2006.01); C09K 11/02 (2006.01); C09K 11/06 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0067 (2013.01); C07D 251/24 (2013.01); C09K 11/025 (2013.01); C09K 11/06 (2013.01); H01L 51/5016 (2013.01); H01L 51/5028 (2013.01);
Abstract
A light-emitting device having a light-emitting layer containing a delayed fluorescence emitter and an n-type compound has an extended lifetime and high performance. A compound having a triazine ring substituted by a spiro aromatic group can be used as the n-type compound.