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. 04, 2018
Filed:
Aug. 20, 2015
Rohm and Haas Electronic Materials Korea Ltd., Cheonan, KR;
Bitnari Kim, Cheonan, KR;
Nam-Kyun Kim, Yongin, KR;
Hong-Yeop Na, Seoul, KR;
Tae-Jin Lee, Seoul, KR;
Kyung-Hoon Choi, Hwaseong, KR;
Jae-Hoon Shim, Seoul, KR;
Young-Jun Cho, Seongnam, KR;
Hee-Ryong Kang, Seoul, KR;
Young-Mook Lim, Cheonan, KR;
Hyun-Ju Kang, Gwangmyeong, KR;
Doo-Hyeon Moon, Hwaseong, KR;
Ji-Song Jun, Hwaseong, KR;
Hee-Choon Ahn, Seoul, KR;
Young-Kwang Kim, Hwaseong, KR;
Jin-Ri Hong, Cheonan, KR;
ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD., Cheonan, KR;
Abstract
The present invention relates to a plurality of host materials and an organic electroluminescent device comprising the same. By comprising a specific combination of a plurality of host compounds, the organic electroluminescent device according to the present invention provides excellent lifespan characteristics while maintaining high luminous efficiency.