公开(公告)号：US20160365515A1

公开(公告)日：2016-12-15

申请号：US15048488

申请日：2016-02-19

Applicant: Samsung Display Co., Ltd.

Inventor： Naotoshi SUGANUMA ,  Hiroaki ITOI ,  Masatsugu UENO

IPC: H01L51/00

CPC classification number: H01L51/006 ,  H01L51/0059 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/0081 ,  H01L51/5064

Abstract: An organic electroluminescent (EL) device having improved emission efficiency and emission lifetime. An embodiment of the organic EL device of the present disclosure includes a plurality of hole transport layers between an anode and an emission layer. The plurality of the hole transport layers may include an anode-side hole transport layer, a middle hole transport layer, and an emission layer-side hole transport layer. The emission layer-side hole transport layer may include an emission layer-side hole transport material represented by the following Formula 1: