公开(公告)号：US20210336153A1

公开(公告)日：2021-10-28

申请号：US16972948

申请日：2019-05-13

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： BitNari KIM ,  Su-Hyun LEE ,  Hyo-Soon PARK ,  Tae-Jun HAN ,  Jeong-Eun YANG ,  Sang-Hee CHO ,  Doo-Hyeon MOON

IPC: H01L51/00

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 higher luminous efficiency and/or longer lifespan properties as compared with a conventional organic electroluminescent device.