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:
Sep. 08, 2026
Filed:
Nov. 21, 2022
Rohm and Haas Electronic Materials Korea Ltd., Chungcheongnam-do, KR;
Bitnari Kim, Gyeonggi-do, KR;
Doo-Hyeon Moon, Gyeonggi-do, KR;
Su-Hyun Lee, Gyeonggi-do, KR;
Du-Yong Park, Gyeonggi-do, KR;
So-Young Jung, Gyeonggi-do, KR;
Hae-Yeon Kim, Gyeonggi-do, KR;
Sang-Hee Cho, Gyeonggi-do, KR;
Abstract
The present disclosure relates to a plurality of host materials comprising a first host material having a compound represented by formula 1, and a second host material having a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds of the present disclosure as host materials, it is possible to provide an organic electroluminescent device having long lifetime properties while having an equivalent or improved level of power efficiency compared to conventional organic electroluminescent devices.