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:
May. 27, 2025
Filed:
Oct. 16, 2019
Applicant:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Inventors:
Satomi Tasaki, Sodegaura, JP;
Taro Yamaki, Sodegaura, JP;
Hiroaki Itoi, Sodegaura, JP;
Yuki Nakano, Sodegaura, JP;
Yuichiro Kawamura, Sodegaura, JP;
Assignee:
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10K 85/60 (2023.01); C09K 11/06 (2006.01); H10K 50/12 (2023.01); H10K 50/13 (2023.01); H10K 85/30 (2023.01); H10K 101/00 (2023.01);
U.S. Cl.
CPC ...
H10K 85/626 (2023.02); C09K 11/06 (2013.01); H10K 85/615 (2023.02); H10K 85/623 (2023.02); H10K 85/631 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1018 (2013.01); H10K 50/12 (2023.02); H10K 50/131 (2023.02); H10K 85/322 (2023.02); H10K 85/622 (2023.02); H10K 2101/90 (2023.02);
Abstract
An organic electroluminescence device including: an anode, a cathode, and at least one emitting layer between the cathode and the anode, wherein the emitting layer contains a first host material, a second host material, and a dopant material, the first host material is a compound having at least one deuterium atom, and the emitting layer contains the first host material in the proportion of 1% by mass or more.