公开(公告)号：US20190058015A1

公开(公告)日：2019-02-21

申请号：US16166782

申请日：2018-10-22

Applicant: LG DISPLAY CO., LTD.

Inventor： Sang-Bin LEE ,  Hye-Min HWANG ,  Hui-Kun YUN ,  Jun-Ho YOUN ,  Jun-Young KIM

IPC: H01L27/32 ,  H01L51/00 ,  H01L51/52 ,  G09G3/32 ,  H01L51/50

CPC classification number: H01L27/3206 ,  G09G3/32 ,  G09G2300/0842 ,  H01L27/3211 ,  H01L27/3246 ,  H01L27/3258 ,  H01L51/0004 ,  H01L51/5012 ,  H01L51/5225 ,  H01L51/5265 ,  H01L2227/323 ,  H01L2251/558

Abstract: An electroluminescent display device includes a substrate on which first and second pixel regions are defined, a passivation layer over the substrate, a first electrode in each of the first and second pixel regions on the passivation layer, a bank layer exposing the first electrode, a light emitting layer on the first electrode exposed by the bank layer, and a second electrode on the light emitting layer, further the bank layer includes first and second openings exposing the first electrodes corresponding to the first and second pixel regions, respectively, and also a depth of the second opening is larger than a depth of the first opening, and a height of the bank layer of the second pixel region is larger than a height of the bank layer of the first pixel region.