公开(公告)号：US20230180500A1

公开(公告)日：2023-06-08

申请号：US17874752

申请日：2022-07-27

Applicant: Samsung Display Co., LTD.

Inventor： Jin-Won SUN ,  Sung Han KIM ,  Chang Woong CHU

IPC: H01L51/50 ,  H01L51/56

CPC classification number: H01L51/5056 ,  H01L51/5072 ,  H01L51/56

Abstract: A light-emitting device includes a first electrode; a second electrode that overlaps the first electrode in a plan view; an emission layer disposed between the first electrode and the second electrode; a hole transport region disposed between the first electrode and the emission layer; and an electron transport region disposed between the emission layer and the second electrode, and at least one of the hole transport region or the electron transport region includes a recess portion.