公开(公告)号：US11574985B2

公开(公告)日：2023-02-07

申请号：US17135475

申请日：2020-12-28

Applicant: LG Display Co., Ltd.

Inventor： Youngju Koh ,  Woojung Byun ,  Dongyoon Lee ,  Sungsoo Kim ,  Kwangyong Choi

IPC: H01L27/32 ,  H01L51/52 ,  H01L51/56

Abstract: Provided is an organic light-emitting diode (OLED) display device. The OLED display device includes a substrate in which a pixel area and a non-pixel area are defined, a power line formed on the substrate, at least one insulating film covering the power line, a light-emitting element formed on the insulating film, a connection electrode connected to the power line and formed to extend along an upper surface of the insulating film, and a passivation film having a contact hole through which a portion of the connection electrode is exposed within the non-pixel area. The light-emitting element includes a first electrode, an emissive layer, and a second electrode that are sequentially stacked. The second electrode is in direct contact with the connection electrode within the contact hole.

公开(公告)号：US10418430B2

公开(公告)日：2019-09-17

申请号：US16216282

申请日：2018-12-11

Applicant: LG DISPLAY CO., LTD.

Inventor： Kwangyong Choi ,  Kihyung Lee ,  Sungman Han

IPC: H01L27/32 ,  H01L51/52 ,  H01L51/56 ,  G09G3/3275 ,  G09G3/3266

Abstract: A display device including a substrate including an emitting region and a non-emitting region; an auxiliary electrode disposed in the non-emitting region; a first passivation film covering the emitting region and the auxiliary electrode in the non-emitting region and including a first passivation hole exposing the auxiliary electrode; an overcoat layer disposed on the first passivation film and includes an over-hole exposing the auxiliary electrode; a first barrier layer disposed on the first passivation film and the overcoat layer and contacting the auxiliary electrode; a second passivation film disposed on the first barrier layer and including a second passivation hole exposing the first barrier layer; a bank layer disposed on the second passivation film and including a bank hole exposing the first barrier layer and having an undercut structure; an organic layer disposed on the bank layer and disconnected by the undercut structure; and a second electrode disposed on the organic layer and contacting the first barrier layer via the bank hole of the bank layer.