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:
May. 17, 2022
Filed:
Sep. 06, 2017
Applicant:
Kyulux, Inc., Fukuoka, JP;
Inventors:
Junji Adachi, Fukuoka, JP;
Ayataka Endo, Fukuoka, JP;
Ping Kuen Daniel Tsang, Fukuoka, JP;
Hidetoshi Fujimura, Fukuoka, JP;
Kiyomasa Sueishi, Fukuoka, JP;
Asuka Yoshizaki, Fukuoka, JP;
Keiro Nasu, Fukuoka, JP;
Assignee:
KYULUX, INC., Fukuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5004 (2013.01); H01L 51/502 (2013.01); H01L 51/5016 (2013.01); H01L 51/5072 (2013.01); H01L 2251/552 (2013.01); H01L 2251/558 (2013.01);
Abstract
An organic light emitting device having an exciton generation layer that contains a compound having a difference between the lowest excited singlet energy level Eand the lowest excited triplet energy level Ethereof of 0.3 eV or less, or an exciplex to emit delayed fluorescence, and a light emitting layer that contains a light emitting material has a high efficiency and a long lifetime.