公开(公告)号：US20210320265A1

公开(公告)日：2021-10-14

申请号：US17260178

申请日：2019-12-21

Applicant: LG DISPLAY CO., LTD.

Inventor： In Bum SONG ,  Seung Hee YOON ,  Jin Ho PARK ,  Dong Hyeok LIM

IPC: H01L51/00

Abstract: The present disclosure relates to an OLED that includes a first electrode; a second electrode facing the first electrode; a first emitting material layer including a first host, a second host and a blue dopant and positioned between the first and second electrodes; a first electron blocking layer including an electron blocking material of an amine derivative and positioned between the first electrode and the first emitting material layer; and a first hole blocking layer including at least one of a first hole blocking material and a second hole blocking material and positioned between the second electrode and the first emitting material layer, wherein the first host is an anthracene derivative, and the second host is a deuterated anthracene derivative, and wherein the first hole blocking material is an azine derivative, and the second hole blocking material is a benzimidazole derivative.