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. 06, 2026
Filed:
Sep. 28, 2020
Applicant:
Idemitsu Kosan Co.,ltd., Tokyo, JP;
Inventors:
Tasuku Haketa, Sodegaura, JP;
Kazuki Nishimura, Sodegaura, JP;
Assignee:
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/54 (2006.01); C09K 11/06 (2006.01); H10K 85/60 (2023.01); H10K 50/15 (2023.01);
U.S. Cl.
CPC ...
H10K 85/658 (2023.02); C09K 11/06 (2013.01); H10K 85/631 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); C09K 2211/1018 (2013.01); H10K 50/15 (2023.02); H10K 85/615 (2023.02); H10K 85/626 (2023.02); H10K 85/655 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02);
Abstract
An organic electroluminescence device comprising: a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer comprises an emitting layer and a first layer, the first layer is disposed between the anode and the emitting layer, the emitting layer comprises a compound A having a Stokes shift of 20 nm or smaller and an emission peak wavelength of 440 nm to 465 nm, and the first layer comprises a first hole-transporting material and a second hole-transporting material.