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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 11944004 B1

PDFFull Text
Date of Patent:
Mar. 26, 2024

Filed:

Feb. 08, 2017

Organic electroluminescence element

Applicant:

Hodogaya Chemical Co., Ltd., Tokyo, JP;

Inventors:

Norimasa Yokoyama, Tokyo, JP;

Shuichi Hayashi, Tokyo, JP;

Naoaki Kabasawa, Tokyo, JP;

Takeshi Yamamoto, Tokyo, JP;

Assignee:

HODOGAYA CHEMICAL CO., LTD., Tokyo, JP;

Attorney:

Saliwanchik, Lloyd & Eisenschenk

Primary Examiner:

Jay Yang

Assistant Examiner:

J L Yang

Int. Cl.
CPC ...
H01L 51/00 (2006.01); H01L 51/50 (2006.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 50/18 (2023.01); H10K 85/60 (2023.01); H10K 50/125 (2023.01); H10K 50/81 (2023.01); H10K 50/82 (2023.01); H10K 101/10 (2023.01);
U.S. Cl.
CPC ...
H10K 85/654 (2023.02); H10K 50/11 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/171 (2023.02); H10K 50/18 (2023.02); H10K 85/615 (2023.02); H10K 85/631 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/6572 (2023.02); H10K 50/125 (2023.02); H10K 50/17 (2023.02); H10K 50/81 (2023.02); H10K 50/82 (2023.02); H10K 85/626 (2023.02); H10K 2101/10 (2023.02);
Abstract

According to the present invention, there is provided an organic electroluminescence element including at least an anode, a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and a cathode in the stated order, the organic electroluminescence element being characterized in that: the hole injection layer contains an arylamine compound represented by the following general formula (1) and an electron acceptor. The organic EL element of the present invention has a high light emission efficiency and an excellent durability, as compared with the related art, while maintaining the existing low drive voltage.

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