公开(公告)号：US20180138435A1

公开(公告)日：2018-05-17

申请号：US15633140

申请日：2017-06-26

Applicant: LG DISPLAY CO., LTD.

Inventor： Sung-Moo KIM ,  Kyoung-Ji BAE

IPC: H01L51/50

CPC classification number: H01L51/508 ,  H01L27/3213 ,  H01L27/3246 ,  H01L51/0004 ,  H01L51/5008 ,  H01L51/504 ,  H01L51/5056 ,  H01L51/5096 ,  H01L2251/558

Abstract: An organic light emitting diode includes a first electrode; a hole auxiliary layer on the first electrode; a light emitting material layer on the hole auxiliary layer and emitting white light; an electron auxiliary layer on the light emitting material layer; and a second electrode on the electron auxiliary layer, wherein the light emitting material layer includes a first light emitting material layer, a second light emitting material layer and a third light emitting material layer sequentially layered, and wherein the first light emitting material layer includes an electron blocking material.