公开(公告)号：US20230232649A1

公开(公告)日：2023-07-20

申请号：US17979551

申请日：2022-11-02

Applicant: Samsung Display Co., Ltd.

Inventor： HYEONGPIL KIM ,  BEOMJOON KIM ,  ILHA SONG ,  DAEWOONG LEE ,  BORA LEE ,  ILLHUN CHO

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

CPC classification number: H01L51/504 ,  H01L51/5092 ,  H01L27/3246 ,  H01L51/5218 ,  H01L51/5072 ,  H01L51/5056

Abstract: A display device including a base layer including a first pixel area configured to emit a first light therefrom and a second pixel area configured to emit a second light therefrom, a first electrode on the base layer, a second electrode on the first electrode and facing the first electrode, first light emitting stacks between the first and second electrodes and in the first pixel area, a first charge generation layer between the first light emitting stacks, second light emitting stacks between the first and second electrodes and in the second pixel area, and a second charge generation layer between the second light emitting stacks. The first charge generation layer includes a first metal, the second charge generation layer includes a second metal different from the first metal, and the second metal has a work function equal to or greater than 1.7 eV and equal to or smaller than 3.2 eV.