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:
Jan. 20, 2022
Applicant:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Inventors:
Keitaro Yamada, Sodegaura, JP;
Masato Nakamura, Sodegaura, JP;
Assignee:
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/00 (2006.01); H10K 85/40 (2023.01); H10K 85/60 (2023.01); H10K 50/15 (2023.01); H10K 50/17 (2023.01);
U.S. Cl.
CPC ...
H10K 85/623 (2023.02); H10K 85/40 (2023.02); H10K 85/624 (2023.02); H10K 85/626 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 50/15 (2023.02); H10K 50/17 (2023.02);
Abstract
An organic electroluminescence device, comprising: a cathode, an anode, an emitting layer disposed between the cathode and the anode, and a hole-transporting zone disposed between the anode and the emitting layer, wherein the hole-transporting zone contains a first layer and a second layer in this order from the anode side, the first layer contains a compound represented by the following formula (1), and the first layer has a thickness of 0.10 to 3.00 nm.