公开(公告)号：US20200058721A1

公开(公告)日：2020-02-20

申请号：US16536230

申请日：2019-08-08

Applicant: LG Display Co., Ltd.

Inventor： Dong-Min Sim ,  Won-Hoe Koo ,  Ji-Hyang Jang

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

Abstract: The present disclosure is directed to an organic light emitting diode display device includes a substrate having an emitting area and a non-emitting area; an overcoating layer on a first surface of the substrate and including a plurality of convex portions and a plurality of concave portions, at least one of the plurality of convex portions including a bottom surface portion, a top surface portion and a side surface portion between the bottom and top surface portions; a light emitting diode on the overcoating layer; and a cholesteric liquid crystal layer at a transmission direction of a light emitted from the light emitting diode.

公开(公告)号：US11164927B2

公开(公告)日：2021-11-02

申请号：US16536230

申请日：2019-08-08

Applicant: LG Display Co., Ltd.

Inventor： Dong-Min Sim ,  Won-Hoe Koo ,  Ji-Hyang Jang

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

Abstract: The present disclosure is directed to an organic light emitting diode display device includes a substrate having an emitting area and a non-emitting area; an overcoating layer on a first surface of the substrate and including a plurality of convex portions and a plurality of concave portions, at least one of the plurality of convex portions including a bottom surface portion, a top surface portion and a side surface portion between the bottom and top surface portions; a light emitting diode on the overcoating layer; and a cholesteric liquid crystal layer at a transmission direction of a light emitted from the light emitting diode.

公开(公告)号：US11152598B2

公开(公告)日：2021-10-19

申请号：US16905799

申请日：2020-06-18

Applicant: LG Display Co., Ltd.

Inventor： Yong-Hoon Choi ,  Won-Hoe Koo ,  Woo-Ram Youn

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

Abstract: An electroluminescent display device includes a thin film transistor disposed on a substrate; a passivation layer disposed on the thin film transistor; a plurality of metallic patterns disposed to be spaced apart from each other on the passivation layer; a reflective electrode disposed conforming to the shapes of the plurality of metallic patterns and a top surface of the passivation layer and including a plurality of protruding portions; an overcoat layer disposed on the passivation layer and the reflective electrode and including an opening configured to expose a top surface of each of the plurality of protruding portions; a first electrode disposed on the reflective electrode and the overcoat layer and electrically connected to the reflective electrode; an light-emitting layer disposed on the first electrode; and a second electrode disposed on the light-emitting layer.

公开(公告)号：US10957877B2

公开(公告)日：2021-03-23

申请号：US16212484

申请日：2018-12-06

Applicant: LG Display Co., Ltd.

Inventor： Ji-Hyang Jang ,  So-Young Jo ,  Won-Hoe Koo

IPC: H01L51/52 ,  H01L27/32

Abstract: An organic light emitting diode display device includes: a substrate including a plurality of pixel regions which each include an emission region and a non-emission region around the emission region; a plurality of scattering portions disposed on the substrate, corresponding to the emission region, and spaced apart from each other; a first overcoat layer disposed on the substrate having the plurality of scattering portions and including a plurality of concave portions which respectively correspond to the plurality of scattering portions; a first electrode disposed on the first overcoat layer in each of the plurality of pixel regions; and an organic light emitting layer and a second electrode sequentially disposed on the first electrode.

公开(公告)号：US10903455B2

公开(公告)日：2021-01-26

申请号：US16672476

申请日：2019-11-03

Applicant: LG Display Co., Ltd.

Inventor： Soo-Kang Kim ,  Won-Hoe Koo ,  Ji-Hyang Jang ,  So-Young Jo

IPC: H01L27/32 ,  H01L51/52 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/20

Abstract: Disclosed is a light emitting display device which facilitates to improve light-extraction efficiency of pixels, and to maximize light-extraction efficiency of each pixel, wherein the light emitting display device includes a substrate having a first area and a second area, a planarization coating layer prepared on the substrate and configured to have a first curve pattern prepared on the first area, and a second curve pattern prepared on the second area, and an emission device prepared on the first curve pattern and the second curve pattern, wherein a thickness of the planarization coating layer overlapping the first curve pattern is different from a thickness of the planarization coating layer overlapping the second curve pattern, and each of the first curve pattern and the second curve pattern includes a plurality of protruding portions having an aspect ratio of 0.4˜0.6.

公开(公告)号：US10720597B2

公开(公告)日：2020-07-21

申请号：US16109691

申请日：2018-08-22

Applicant: LG Display Co., Ltd.

Inventor： Yong-Hoon Choi ,  Keum-Kyu Min ,  Won-Hoe Koo

IPC: H01L27/32 ,  H01L51/52

Abstract: An electroluminescent display device includes: a substrate including a subpixel; a thin film transistor disposed at the subpixel; an overcoat layer disposed on the thin film transistor; a first electrode disposed on the overcoat layer and electrically connected to the thin film transistor; a bank layer disposed on the overcoat layer and the first electrode, the bank layer including a plurality of openings configured to expose the first electrode and a plurality of opening patterns formed in a bar shape to expose the first electrode and connect the plurality of openings; an emitting layer disposed on the first electrode and the bank layer; and a second electrode disposed on the emitting layer.

公开(公告)号：US10658623B2

公开(公告)日：2020-05-19

申请号：US16171086

申请日：2018-10-25

Applicant: LG Display Co., Ltd.

Inventor： Yong-Hoon Choi ,  Won-Hoe Koo

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

Abstract: An electroluminescent display device includes an overcoat layer on a substrate; a plurality of low-refractive members formed of an inorganic matter and disposed on the overcoat layer; a first electrode on the overcoat layer and the plurality of low-refractive members; a bank layer disposed on the overcoat layer and the first electrode and including an opening configured to expose the first electrode; an emitting layer disposed on the first electrode; and a second electrode disposed on the emitting layer, wherein each of the plurality of low-refractive members includes a first flat surface contacting the first electrode, a second flat surface having an area greater than that of the first flat surface and contacting the overcoat layer and first and second inclined surfaces connecting the first flat surface and the second flat surface, and, wherein a refractive index of each of the plurality of low-refractive members is lower than those of the overcoat layer and the first electrode.

公开(公告)号：US10516002B2

公开(公告)日：2019-12-24

申请号：US16116405

申请日：2018-08-29

Applicant: LG DISPLAY CO., LTD.

Inventor： So-Young Jo ,  Soo-Kang Kim ,  Won-Hoe Koo

IPC: H01L27/32 ,  H01L51/52

Abstract: An organic light emitting display device includes a substrate including a plurality of pixel regions, a light absorption material layer in a white pixel region of the plurality of pixel regions and including a light absorption dye, an overcoat layer on the light absorption material layer, a micro-lens structure at a top surface of the overcoat layer, and an emitting diode on the micro-lens structure, wherein the light absorption dye has a main absorption wavelength of about 500 to 640 nm.