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:
Mar. 19, 2024
Filed:
Aug. 07, 2019
Kyushu University, National University Corporation, Fukuoka, JP;
Kwansei Gakuin Educational Foundation, Nishinomiya, JP;
Kyulux, Inc., Fukuoka, JP;
Hajime Nakanotani, Fukuoka, JP;
Takuji Hatakeyama, Sanda, JP;
Yasuhiro Kondo, Ichihara, JP;
Yasuyuki Sasada, Ichihara, JP;
Motoki Yanai, Ichihara, JP;
Chin-Yiu Chan, Fukuoka, JP;
Masaki Tanaka, Fukuoka, JP;
Hiroki Noda, Fukuoka, JP;
Chihaya Adachi, Fukuoka, JP;
Yoshitake Suzuki, Fukuoka, JP;
Naoto Notsuka, Fukuoka, JP;
KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, Fukuoka, JP;
KWANSEI GAKUIN EDUCATIONAL FOUNDATION, Hyogo, JP;
KYULUX, INC., Fukuoka, JP;
Abstract
An organic light-emitting device containing both a compound represented by the following general formula (1) and a compound represented by the following general formula (2) has a high light emission efficiency. The rings a to c each are a benzene ring that can be optionally condensed, Rand Reach represent a substituted or unsubstituted aryl group, etc., four of Rto Reach are a substituted or unsubstituted carbazol-9-yl group, but all of these four are not the same, and the remaining one is a hydrogen atom, a cyano group, etc.