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:
Jan. 20, 2026
Filed:
Sep. 11, 2020
Applicant:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/50 (2006.01); C07C 15/20 (2006.01); C07C 15/28 (2006.01); C07C 15/30 (2006.01); C07C 15/38 (2006.01); C07C 211/54 (2006.01); C07D 307/91 (2006.01); C07D 309/34 (2006.01); C07D 333/76 (2006.01); C07D 407/10 (2006.01); C07D 409/04 (2006.01); C07D 471/06 (2006.01); C07D 487/06 (2006.01); C07D 487/16 (2006.01); C07D 487/22 (2006.01); C07D 491/16 (2006.01); C07D 491/22 (2006.01); C07D 493/04 (2006.01); C07D 495/04 (2006.01); C07D 495/22 (2006.01); C07F 5/02 (2006.01); C07F 7/08 (2006.01); C09K 11/06 (2006.01); H10K 85/40 (2023.01); H10K 85/60 (2023.01);
U.S. Cl.
CPC ...
C09K 11/06 (2013.01); C07C 15/20 (2013.01); C07C 15/28 (2013.01); C07C 15/30 (2013.01); C07C 15/38 (2013.01); C07C 211/54 (2013.01); C07D 307/91 (2013.01); C07D 309/34 (2013.01); C07D 333/76 (2013.01); C07D 407/10 (2013.01); C07D 409/04 (2013.01); C07D 471/06 (2013.01); C07D 487/06 (2013.01); C07D 487/16 (2013.01); C07D 487/22 (2013.01); C07D 491/16 (2013.01); C07D 491/22 (2013.01); C07D 493/04 (2013.01); C07D 495/04 (2013.01); C07D 495/22 (2013.01); C07F 5/027 (2013.01); C07F 7/0812 (2013.01); C07F 7/0816 (2013.01); H10K 85/40 (2023.02); H10K 85/615 (2023.02); H10K 85/622 (2023.02); H10K 85/623 (2023.02); H10K 85/624 (2023.02); H10K 85/631 (2023.02); H10K 85/633 (2023.02); H10K 85/652 (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);
Abstract
An organic electroluminescence device includes an anode, a cathode, a first emitting layer, and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer contains a first compound represented by a formula (101) below as a first host material, the second emitting layer contains a second compound represented by a formula (2) below as a second host material, and the first emitting layer is in direct contact with the second emitting layer.