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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 12356856 B1

PDFFull Text
Date of Patent:
Jul. 08, 2025

Filed:

Apr. 09, 2020

Plurality of host materials and organic electroluminescent device comprising the same

Applicant:

Rohm and Haas Electronic Materials Korea Ltd., Chungcheongnam-do, KR;

Inventors:

Ji-Song Jun, Gyeonggi-do, KR;

Hee-Ryong Kang, Gyeonggi-do, KR;

Chi-Sik Kim, Gyeonggi-do, KR;

Kyoung-Jin Park, Gyeonggi-do, KR;

Jin-Man Kim, Gyeonggi-do, KR;

Seung-Hyun Yoon, Gyeonggi-do, KR;

Assignee:

DuPont Specialty Materials Korea Ltd., , KR;

Attorney:

G. Creston Campbell

Primary Examiner:

Gregory D Clark

Int. Cl.
CPC ...
H01L 51/50 (2006.01); C07D 251/24 (2006.01); C07D 403/04 (2006.01); C07D 403/10 (2006.01); C07D 405/04 (2006.01); C07D 487/04 (2006.01); C09K 11/06 (2006.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01);
U.S. Cl.
CPC ...
H10K 85/6572 (2023.02); C07D 251/24 (2013.01); C07D 403/04 (2013.01); C07D 403/10 (2013.01); C07D 405/04 (2013.01); C07D 487/04 (2013.01); C09K 11/06 (2013.01); H10K 85/624 (2023.02); H10K 85/654 (2023.02); H10K 85/6574 (2023.02); C09K 2211/1018 (2013.01); H10K 50/11 (2023.02); H10K 2101/10 (2023.02); H10K 2101/90 (2023.02);
Abstract

The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds as a host material, it is possible to provide an organic electroluminescent device having high luminous efficiency and/or improved lifespan properties, compared to conventional organic electroluminescent devices.

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