公开(公告)号：US20190207138A1

公开(公告)日：2019-07-04

申请号：US16225999

申请日：2018-12-19

Applicant: LG Display Co., Ltd.

Inventor： Seongsu JEON ,  Seungryong JOUNG ,  Taewoo JEON ,  Mi-Young HAN

IPC: H01L51/50 ,  H01L51/52 ,  H01L27/32

CPC classification number: H01L51/504 ,  H01L27/3244 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5092 ,  H01L51/5206 ,  H01L51/5221 ,  H01L51/5278

Abstract: One embodiment of the present disclosure provides an organic light-emitting element corresponding to each pixel region. The organic light-emitting element includes a hole transport layer, a first light-emitting layer, a second light-emitting layer, a third light-emitting layer, a fourth light-emitting layer, and an electron transport layer. The first light-emitting layer includes a first dopant corresponding to a first color and a first host. The second light-emitting layer includes a second dopant corresponding to a second color different from the first color and a second host different from the first host. The third light-emitting layer includes the first dopant and the second host, and the fourth light-emitting layer includes the second dopant and the second host.