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:
Dec. 05, 2023
Filed:
Apr. 16, 2020
Applicant:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Inventor:
Kazuki Nishimura, Sodegaura, JP;
Assignee:
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10K 85/30 (2023.01); C09K 11/06 (2006.01); C09K 11/02 (2006.01); H10K 85/40 (2023.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/12 (2023.01); H10K 101/10 (2023.01);
U.S. Cl.
CPC ...
H10K 85/342 (2023.02); C09K 11/02 (2013.01); C09K 11/06 (2013.01); H10K 85/322 (2023.02); H10K 85/346 (2023.02); H10K 85/40 (2023.02); H10K 85/636 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); C09K 2211/1007 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/1088 (2013.01); C09K 2211/185 (2013.01); H10K 50/11 (2023.02); H10K 50/121 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 2101/10 (2023.02);
Abstract
An organic electroluminescence device includes an anode, an emitting layer, and a cathode, in which the emitting layer contains a first compound and a second compound, the second compound satisfying (a), (b), (c), and (d) of: (a) a half bandwidth being 30 nm or less; (b) ionization potential being 6.0 eV or less; (c) a singlet energy S(M2) being 2.6 eV or more; and (d) a peak top in a toluene solution being 465 nm or less.