公开(公告)号：US11665927B2

公开(公告)日：2023-05-30

申请号：US17116560

申请日：2020-12-09

Applicant: LG Display Co., Ltd.

Inventor： Keum-Kyu Min ,  Min-Geun Choi ,  Yong-Hoon Choi

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

CPC classification number: H01L51/5275 ,  H01L27/3258 ,  H01L51/5012 ,  H01L51/5209 ,  H01L51/5225 ,  H01L27/322 ,  H01L27/3246

Abstract: An organic light emitting diode display device includes a substrate including at least one subpixel having a non-emitting area and an emitting area; a thin film transistor in the non-emitting area on the substrate; an overcoating layer on the thin film transistor and having a plurality of microlenses at a top surface of the overcoating layer; and a light emitting diode in the emitting area on the overcoating layer and connected to the thin film transistor, wherein a surface of the plurality of microlenses in a sampling area of the emitting area is divided into a plurality of convex portions and a plurality of concave portions with respect to a central surface, and a total volume of the plurality of convex portions with respect to the central surface is equal to a total volume of the plurality of concave portions with respect to the central surface.

公开(公告)号：US10651427B2

公开(公告)日：2020-05-12

申请号：US16168056

申请日：2018-10-23

Applicant: LG Display Co., Ltd.

Inventor： Woo-Ram Youn ,  Yong-Hoon Choi

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

Abstract: The present disclosure relates to an organic light-emitting diode (OLED) display, and more particularly, to an OLED display having improved light extraction efficiency. According to the present disclosure, since a plurality of holes are formed in a first electrode of a light-emitting diode and a insulating material is disposed in each of the holes, an organic light-emitting layer and a second electrode constitute a microlens, thereby improving light extraction efficiency of the OLED display. As a result, brightness may be improved, and power consumption may be reduced. In particular, since the plurality of holes are formed in the first electrode and the insulating material is disposed in each of the plurality of holes, an interface between the insulating material and the first electrode is decreased, thereby further improving light extraction efficiency.

公开(公告)号：US10566575B2

公开(公告)日：2020-02-18

申请号：US16141468

申请日：2018-09-25

Applicant: LG DISPLAY CO., LTD.

Inventor： Kang-Ju Lee ,  Min-Geun Choi ,  Jin-Tae Kim ,  Yong-Hoon Choi

IPC: H01L29/08 ,  H01L35/24 ,  H01L51/00 ,  H01L51/52 ,  H01L27/32

Abstract: An organic light emitting diode (OLED) lighting apparatus includes a substrate including a plurality of emission areas and a plurality of non-emission areas surrounding edges of the plurality of emission areas, an overcoat layer disposed on the substrate and having a first non-flat top surface in at least one of the emission areas and a second non-flat top surface in at least one of the non-emission area, an auxiliary electrode disposed on the second non-flat top surface and including a reflective material, a first electrode disposed on the first non-flat top surface in at least one of the emission areas and disposed on the auxiliary electrode in the non-emission areas, an organic emitting layer on the first electrode, and a second electrode on the organic emitting layer, wherein the auxiliary electrode and the first electrode are in electrical contact with each other.

公开(公告)号：US10355234B2

公开(公告)日：2019-07-16

申请号：US15976975

申请日：2018-05-11

Applicant: LG Display Co., Ltd.

Inventor： Yong-Hoon Choi ,  Won-Hoe Koo ,  Jin-Tae Kim ,  Soo-Kang Kim ,  Ji-Hyang Jang

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

Abstract: An organic light emitting diode includes: a first electrode including a concave part or a convex part; an organic light emitting layer disposed on the first electrode; and a second electrode disposed on the organic light emitting layer.

公开(公告)号：US11011732B2

公开(公告)日：2021-05-18

申请号：US16148274

申请日：2018-10-01

Applicant: LG Display Co., Ltd.

Inventor： Kang-Ju Lee ,  Keum-Kyu Min ,  Soo-Kang Kim ,  Jin-Tae Kim ,  Yong-Hoon Choi

IPC: H01L51/52 ,  H01L27/32

Abstract: An organic light emitting diode display device includes a substrate having a plurality of subpixels which each have an emission region and a non-emission region defined along an edge of the emission region. A reflective barrier is disposed to correspond to the non-emission region and includes a reflective side surface. An overcoat layer is disposed on an upper portion of the reflective barrier. A light emitting diode includes a first electrode, an organic light emitting layer, and a second electrode, which are sequentially disposed on the overcoat layer. The reflective side surface of the reflective barrier is inversely tapered such that a width thereof is decreased in a traveling direction of light emitted from the organic light emitting layer.

公开(公告)号：US10727447B2

公开(公告)日：2020-07-28

申请号：US16198205

申请日：2018-11-21

Applicant: LG Display Co., Ltd.

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

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

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：US10693108B2

公开(公告)日：2020-06-23

申请号：US16109449

申请日：2018-08-22

Applicant: LG Display Co., Ltd.

Inventor： Jin-Tae Kim ,  Won-Hoe Koo ,  Yong-Hoon Choi

IPC: H01L51/52 ,  H01L27/32

Abstract: A light extraction pattern is disposed in each hole of a first electrode, or a first electrode including round portions and pattern portions is disposed so that light trapped in an emission layer can be output uniformly. In this way, the light extraction efficiency can be effectively improved, and occurrence of a black area can be prevented.

公开(公告)号：US10424761B2

公开(公告)日：2019-09-24

申请号：US16142511

申请日：2018-09-26

Applicant: LG Display Co., Ltd.

Inventor： Yong-Hoon Choi ,  Won-Hoe Koo

IPC: H01L27/32 ,  H01L51/52 ,  H01L31/0236

Abstract: An electroluminescent display device includes a substrate including an emissive area and a non-emissive area, a plurality of protrusions over the substrate and in the emissive area, each of the plurality of protrusions spaced apart from each other with an air gap therebetween, a high-viscosity material layer on the plurality of protrusions and the air gaps, a first electrode on the high-viscosity material layer, an emitting layer on the first electrode, and a second electrode on the emitting layer.

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：US10903282B2

公开(公告)日：2021-01-26

申请号：US16139810

申请日：2018-09-24

Applicant: LG DISPLAY CO., LTD.

Inventor： Yong-Hoon Choi ,  So-Young Jo ,  Min-Geun Choi ,  Hee-Jung Yang ,  Soo-Kang Kim

IPC: H01L27/32 ,  H01L51/52 ,  H01L51/50 ,  H01L27/12

Abstract: An organic light emitting display device includes a substrate including a white pixel region, a blue color filter pattern in a first region of the white pixel region, an overcoat layer covering the blue color filer pattern and including a micro-lens, a first electrode on the overcoat layer, an organic emitting layer covering the first electrode, and a second electrode covering the organic emitting layer.