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.:

US 12514115 B1

Date of Patent:

Dec. 30, 2025

Filed:

Sep. 28, 2020

Organic electroluminescence device and electronic apparatus

Applicant:

Idemitsu Kosan Co., Ltd., Tokyo, JP;

Inventors:

Tasuku Haketa, Sodegaura, JP;

Kazuki Nishimura, Sodegaura, JP;

Assignee:

IDEMITSU KOSAN CO., LTD., Tokyo, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

Robert S Loewe

Int. Cl.

CPC ...

H10K 50/15 (2023.01); H10K 50/00 (2023.01); H10K 85/60 (2023.01);

U.S. Cl.

CPC ...

H10K 85/636 (2023.02); H10K 50/00 (2023.02); H10K 85/631 (2023.02); H10K 85/633 (2023.02); H10K 50/156 (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 containing a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer contains an emitting layer, a first layer, and a second layer, the first layer is disposed between the anode and the emitting layer, the second layer is disposed between the anode and the first layer, the first layer contains a first hole-transporting material and a second hole-transporting material, and the second layer contains an acceptor material having an affinity value in the range of 3.8 to 6.0 eV and at least one hole-transporting material.

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