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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 11711970 B1

PDFFull Text
Date of Patent:
Jul. 25, 2023

Filed:

Jan. 31, 2020

Organic electroluminescent device

Applicants:

Kwansei Gakuin Educational Foundation, Hyogo, JP;

SK Materials Jnc Co., Ltd., Gyeonggi-Do, KR;

Inventors:

Takuji Hatakeyama, Hyogo, JP;

Yukihiro Fujita, Chiba, JP;

Guofang Wang, Chiba, JP;

Assignees:

KWANSEI GAKUIN EDUCATIONAL FOUNDATION, Hyogo, JP;

SK MATERIALS JNC CO., LTD., Gyeonggi-Do, KR;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Dawn L Garrett

Int. Cl.
CPC ...
H10K 85/60 (2023.01); C09K 11/06 (2006.01); C07D 307/77 (2006.01); C07F 5/02 (2006.01); C07C 211/61 (2006.01); C07F 7/08 (2006.01); C07D 307/91 (2006.01); C07C 15/28 (2006.01); H10K 50/11 (2023.01); H10K 85/40 (2023.01); H10K 85/30 (2023.01); H10K 50/12 (2023.01);
U.S. Cl.
CPC ...
H10K 85/626 (2023.02); C07C 15/28 (2013.01); C07C 211/61 (2013.01); C07D 307/77 (2013.01); C07D 307/91 (2013.01); C07F 5/027 (2013.01); C07F 7/081 (2013.01); C09K 11/06 (2013.01); H10K 50/11 (2023.02); H10K 85/322 (2023.02); H10K 85/40 (2023.02); H10K 85/615 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/6574 (2023.02); C07C 2603/24 (2017.05); C07C 2603/40 (2017.05); C07C 2603/48 (2017.05); C07C 2603/50 (2017.05); C09K 2211/1011 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1018 (2013.01); H10K 50/12 (2023.02); H10K 85/622 (2023.02);
Abstract

To provide an organic electroluminescent device in which energy efficiency is improved. An organic electroluminescent device includes a pair of electrode layers formed of an anode layer and a cathode layer, and a luminescent layer arranged between the pair of electrode layers, in which the luminescent layer includes a host material and a dopant material, and the dopant material is an anthracene-based compound represented by formula (1), and the luminescent layer further includes a polycyclic aromatic compound represented by formula (2) or a multimer of a polycyclic aromatic compound having a plurality of structures represented by formula (2).

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