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. 07, 2025
Filed:
Jan. 22, 2021
Applicant:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Inventors:
Takushi Shiomi, Chiyoda-ku, JP;
Keiichi Yasukawa, Chiyoda-ku, JP;
Hiromi Nakano, Chiyoda-ku, JP;
Toshinari Ogiwara, Chiyoda-ku, JP;
Assignee:
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/50 (2006.01); C07C 13/72 (2006.01); C07C 15/20 (2006.01); C07C 15/38 (2006.01); C07C 211/54 (2006.01); C07D 209/82 (2006.01); C07D 235/08 (2006.01); C07D 241/46 (2006.01); C07D 251/24 (2006.01); C07D 307/91 (2006.01); C07D 333/76 (2006.01); C07D 401/04 (2006.01); C07D 401/14 (2006.01); C07D 403/04 (2006.01); C07D 403/10 (2006.01); C07D 403/14 (2006.01); C07D 405/10 (2006.01); C07D 405/14 (2006.01); C07D 409/04 (2006.01); C07D 409/10 (2006.01); C07D 409/14 (2006.01); C07D 413/10 (2006.01); C07D 413/14 (2006.01); C07D 471/04 (2006.01); C07D 487/04 (2006.01); C07D 487/14 (2006.01); C07D 487/16 (2006.01); C07D 491/048 (2006.01); C07D 491/147 (2006.01); C07D 493/04 (2006.01); C07D 495/04 (2006.01); C07D 495/14 (2006.01); C07D 519/00 (2006.01); C07F 5/02 (2006.01); C07F 7/08 (2006.01); C07F 9/53 (2006.01); C09K 11/06 (2006.01); H10K 50/11 (2023.01); H10K 50/13 (2023.01); H10K 85/30 (2023.01); H10K 85/40 (2023.01); H10K 85/60 (2023.01); H10K 101/20 (2023.01);
U.S. Cl.
CPC ...
C09K 11/06 (2013.01); C07C 13/72 (2013.01); C07C 15/20 (2013.01); C07C 15/38 (2013.01); C07C 211/54 (2013.01); C07D 209/82 (2013.01); C07D 235/08 (2013.01); C07D 241/46 (2013.01); C07D 251/24 (2013.01); C07D 307/91 (2013.01); C07D 333/76 (2013.01); C07D 401/04 (2013.01); C07D 401/14 (2013.01); C07D 403/04 (2013.01); C07D 403/10 (2013.01); C07D 403/14 (2013.01); C07D 405/10 (2013.01); C07D 405/14 (2013.01); C07D 409/04 (2013.01); C07D 409/10 (2013.01); C07D 409/14 (2013.01); C07D 413/10 (2013.01); C07D 413/14 (2013.01); C07D 471/04 (2013.01); C07D 487/04 (2013.01); C07D 487/14 (2013.01); C07D 487/16 (2013.01); C07D 491/048 (2013.01); C07D 491/147 (2013.01); C07D 493/04 (2013.01); C07D 495/04 (2013.01); C07D 495/14 (2013.01); C07D 519/00 (2013.01); C07F 5/022 (2013.01); C07F 5/027 (2013.01); C07F 7/0812 (2013.01); C07F 7/0816 (2013.01); C07F 9/5325 (2013.01); H10K 50/11 (2023.02); H10K 50/13 (2023.02); H10K 85/322 (2023.02); H10K 85/361 (2023.02); H10K 85/40 (2023.02); H10K 85/615 (2023.02); H10K 85/622 (2023.02); H10K 85/624 (2023.02); H10K 85/631 (2023.02); H10K 85/649 (2023.02); H10K 85/654 (2023.02); H10K 85/657 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); C07B 2200/05 (2013.01); H10K 85/658 (2023.02); H10K 2101/20 (2023.02);
Abstract
An organic electroluminescence device includes an anode, a cathode, and an emitting layer disposed between the anode and the cathode. The emitting layer comprises a delayed fluorescent compound M2 having at least one deuterium atom and a compound M3 having at least one deuterium atom. A singlet energy S(M2) of the compound M2 and a singlet energy S(M3) of the compound M3 satisfy the relationship S(M3)>S(M2).