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:
Jul. 28, 2026
Filed:
Mar. 31, 2021
Applicant:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Inventors:
Satomi Tasaki, Tokyo, JP;
Kazuki Nishimura, Tokyo, JP;
Ryota Takahashi, Tokyo, JP;
Yuki Nakano, Tokyo, JP;
Maiko Iida, Tokyo, JP;
Hiroaki Itoi, Tokyo, JP;
Assignee:
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10K 85/60 (2023.01); C07C 15/38 (2006.01); C07D 307/91 (2006.01); C07D 311/78 (2006.01); C09K 11/06 (2006.01); H10K 50/11 (2023.01);
U.S. Cl.
CPC ...
C09K 11/06 (2013.01); C07C 15/38 (2013.01); C07D 307/91 (2013.01); C07D 311/78 (2013.01); H10K 85/622 (2023.02); H10K 85/623 (2023.02); H10K 85/626 (2023.02); H10K 85/6574 (2023.02); C07C 2603/50 (2017.05); C07C 2603/52 (2017.05); C09K 2211/1003 (2013.01); C09K 2211/1018 (2013.01); H10K 50/11 (2023.02);
Abstract
An organic electroluminescence device includes a first emitting layer and a second emitting layer provided between an anode and a cathode, in which the first emitting layer contains, as a first host material, a first compound represented by a formula (1) below and having at least one group represented by a formula (11) below, and the second emitting layer contains a second host material.