公开(公告)号：US20230207734A1

公开(公告)日：2023-06-29

申请号：US17991439

申请日：2022-11-21

Applicant: LG Display Co., Ltd.

Inventor： SangHoon Lee ,  HanSol Choi ,  Joonsuk Lee

IPC: H01L33/38 ,  H01L33/62 ,  H01L27/15

CPC classification number: H01L33/382 ,  H01L33/62 ,  H01L27/156

Abstract: A light emitting display device includes a circuit layer having an auxiliary power electrode disposed on a substrate, a first protective layer covering the circuit layer, a second protective layer disposed between the first protective layer and the auxiliary power electrode, a contact portion penetrating the first protective layer and the second protective layer to expose a portion of the auxiliary power electrode, and a step cover pattern disposed in a step coverage region between the first protective layer and the second protective layer in the periphery of the contact portion.

公开(公告)号：US12101955B2

公开(公告)日：2024-09-24

申请号：US17517675

申请日：2021-11-03

Applicant: LG Display Co., Ltd.

Inventor： Sungbin Shim ,  Miryn Seong ,  HanSol Choi

IPC: H10K50/824 ,  H10K50/844 ,  H10K59/122 ,  H10K59/131 ,  H10K59/38

CPC classification number: H10K50/824 ,  H10K50/844 ,  H10K59/122 ,  H10K59/131 ,  H10K59/38

Abstract: A light emitting display device comprises a substrate, a circuit layer having a thin film transistor and an auxiliary power electrode disposed on the substrate, an insulating layer disposed on the circuit layer and including a first opening which exposes a portion of the auxiliary power electrode, a pixel electrode disposed on the insulating layer and connected to the thin film transistor, an auxiliary electrode contact area formed in the insulating layer, an auxiliary electrode formed on the insulating layer, a light emitting layer disposed on the pixel electrode and the auxiliary electrode, a common electrode disposed on the light emitting layer and electrically connected with the auxiliary power electrode through the auxiliary electrode contact area, a filler disposed in the auxiliary electrode contact area, and an encapsulation layer disposed on the common electrode and the filler, wherein the first opening of the insulating layer includes an undercut area between the auxiliary power electrode and the auxiliary electrode, and wherein the undercut area is filled with the filler.

公开(公告)号：US20220165980A1

公开(公告)日：2022-05-26

申请号：US17517675

申请日：2021-11-03

Applicant: LG Display Co., Ltd.

Inventor： Sungbin Shim ,  Miryn Seong ,  HanSol Choi

IPC: H01L51/52 ,  H01L27/32

Abstract: A light emitting display device comprises a substrate, a circuit layer having a thin film transistor and an auxiliary power electrode disposed on the substrate, an insulating layer disposed on the circuit layer and including a first opening which exposes a portion of the auxiliary power electrode, a pixel electrode disposed on the insulating layer and connected to the thin film transistor, an auxiliary electrode contact area formed in the insulating layer, an auxiliary electrode formed on the insulating layer, a light emitting layer disposed on the pixel electrode and the auxiliary electrode, a common electrode disposed on the light emitting layer and electrically connected with the auxiliary power electrode through the auxiliary electrode contact area, a filler disposed in the auxiliary electrode contact area, and an encapsulation layer disposed on the common electrode and the filler, wherein the first opening of the insulating layer includes an undercut area between the auxiliary power electrode and the auxiliary electrode, and wherein the undercut area is filled with the filler.