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:
May. 12, 2026
Filed:
Aug. 08, 2022
Applicant:
Rohm and Haas Electronic Materials Korea Ltd., Chungcheongnam-do, KR;
Inventors:
Hyo-Soon Park, Gyeonggi-do, KR;
Joon-Hyung Kil, Gyeonggi-do, KR;
Kyoung-Jin Park, Gyeonggi-do, KR;
Sang-Hee Cho, Gyeonggi-do, KR;
So-Mi Park, Gyeonggi-do, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/54 (2006.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 101/00 (2023.01);
U.S. Cl.
CPC ...
H10K 85/6572 (2023.02); H10K 85/622 (2023.02); H10K 85/631 (2023.02); H10K 85/636 (2023.02); H10K 85/654 (2023.02); H10K 85/656 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 50/11 (2023.02); H10K 2101/90 (2023.02);
Abstract
The present disclosure relates to a plurality of host materials comprising at least one first host compound and at least one second host compound, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds according to the present disclosure as host materials, an organic electroluminescent device having a low driving voltage, high luminous efficiency, and long lifespan characteristics can be provided.