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：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：US20230209946A1

公开(公告)日：2023-06-29

申请号：US17992222

申请日：2022-11-22

Applicant: LG Display Co., Ltd.

Inventor： Keum-Kyu Min

IPC: H01L51/00

CPC classification number: H01L27/3213 ,  H01L27/3262 ,  H01L51/5253

Abstract: An organic light emitting diode display includes: a substrate including a plurality of sub-pixels, the plurality of sub-pixels comprising a red sub-pixel, a green sub-pixel, and a blue sub-pixel; a thin film transistor on the substrate; a first overcoat layer on the thin film transistor, the first overcoat layer including a plurality of micro lenses at a surface of the first overcoat layer; a second overcoat layer on the first overcoat layer and having a flat surface, the second overcoat layer including refractive particles dispersed within the second overcoat layer; and a light emitting diode on the second overcoat 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.