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:
Aug. 23, 2022
Filed:
Mar. 22, 2018
Applicant:
Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;
Inventors:
Kei Yoshida, Sodegaura, JP;
Masatoshi Saito, Sodegaura, JP;
Toshinari Ogiwara, Sodegaura, JP;
Kei Yoshizaki, Sodegaura, JP;
Yuichiro Kawamura, Sodegaura, JP;
Assignee:
IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/00 (2006.01); C07D 403/14 (2006.01); C09K 11/06 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0067 (2013.01); C07D 403/14 (2013.01); C09K 11/06 (2013.01); H01L 51/0072 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1018 (2013.01); H01L 51/5012 (2013.01); H01L 51/5072 (2013.01);
Abstract
An organic electroluminescence device includes an anode, an emitting layer, and a cathode, in which the emitting layer contains a first compound represented by a formula (1) and a fluorescent second compound. A singlet energy S(M1) of the first compound is larger than a singlet energy S(FL) of the fluorescent second compound. A is a group represented by a formula (1).