公开(公告)号：US11605680B2

公开(公告)日：2023-03-14

申请号：US16582981

申请日：2019-09-25

Applicant: LG Display Co., Ltd.

Inventor： YuCheol Yang ,  Suhyeon Kim

IPC: H01L27/00 ,  H01L51/52 ,  H01L27/32 ,  H01L51/56 ,  H01L29/66

Abstract: A display device includes: a substrate having thereon a first subpixel, a second subpixel, and a third subpixel; a first electrode in each of the first to third subpixels on the substrate; a first bank between the first electrodes; a second bank on the first bank and having a width less than that of the first bank; a light emitting layer on the first electrodes, the first bank, and the second bank; and a second electrode on the light emitting layer. The light emitting layer provided on the second bank and the light emitting layer provided on the first bank are spaced apart from each other.

公开(公告)号：US11489016B2

公开(公告)日：2022-11-01

申请号：US16726450

申请日：2019-12-24

Applicant: LG Display Co., Ltd.

Inventor： YuCheol Yang ,  Suhyeon Kim ,  MoonSoo Kim

IPC: H01L27/32 ,  H01L51/50 ,  H01L51/52 ,  G02B27/01 ,  G06F1/16

Abstract: A display device comprises a substrate provided with a first subpixel, a second subpixel, a third subpixel, and a fourth subpixel, a first electrode provided on the substrate, an organic light emitting layer arranged on the first electrode, and a second electrode arranged on the organic light emitting layer, wherein the organic light emitting layer includes a first organic light emitting layer and a second organic light emitting layer, the first organic light emitting layer and the second organic light emitting layer are arranged on the first subpixel, the second subpixel, and the fourth subpixel, only the second organic light emitting layer is arranged on the third subpixel, only the first organic light emitting layer emits light on the first subpixel and the second subpixel, only the second organic light emitting layer emits light on the third subpixel, and both of the first organic light emitting layer and the second light emitting layer emit light on the fourth subpixel. Since the organic light emitting layer may emit light in accordance with one-stack voltage even in case of a two-stack structure of the first subpixel and the second subpixel, overall power consumption may be reduced.

公开(公告)号：US11302757B2

公开(公告)日：2022-04-12

申请号：US16518425

申请日：2019-07-22

Applicant: LG Display Co., Ltd.

Inventor： Sungbin Shim ,  Suhyeon Kim ,  YuCheol Yang

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

Abstract: An electroluminescent display apparatus can include a substrate including a first subpixel and a second subpixel, a planarization layer on the substrate, a first electrode in each of the first subpixel and the second subpixel on the planarization layer, a bank between the first electrode of the first subpixel and the first electrode of the second subpixel, a light emitting layer on the first electrode and the bank, and a second electrode on the light emitting layer. The planarization layer includes a plurality of grooves in a region overlapping the bank, the bank includes a bank hole in a region overlapping some of the plurality of grooves, and the bank hole extends along a boundary between the first subpixel and the second subpixel.