公开(公告)号：US09847513B2

公开(公告)日：2017-12-19

申请号：US14960918

申请日：2015-12-07

Applicant: LG DISPLAY CO., LTD.

Inventor： Gwijeong Cho ,  ChangWook Han ,  Taeil Kum ,  Taeshick Kim ,  Heedong Choi ,  JiYoung Kim ,  Mingyu Lee ,  TaeSeok Lim

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

CPC classification number: H01L51/5278 ,  H01L27/3206 ,  H01L27/3209 ,  H01L27/3244 ,  H01L51/5044 ,  H01L2251/558

Abstract: Discussed is an organic light emitting display device. The organic light emitting display device according to an embodiment includes a first electrode and a second electrode on a substrate to be opposite to each other and at least three emission parts between the first electrode and the second electrode. A first distance between the substrate and the first emission layer, a second distance between the first emission layer and the second emission layer, a third distance between the second emission layer and the third emission layer, and a fourth distance between the third emission layer and the second electrode are different from each other.

公开(公告)号：US10032830B2

公开(公告)日：2018-07-24

申请号：US15160256

申请日：2016-05-20

Applicant: LG Display Co., Ltd.

Inventor： TaeSeok Lim ,  Taeshick Kim ,  Seung Kim ,  Jaeseung Jang

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

Abstract: An organic light emitting display device reduces a grayscale-based color difference of the organic light emitting display device. The organic light emitting display device includes opposite first and second electrodes on a substrate and a plurality of emission parts between the first and second electrodes. At least one among the plurality of emission parts includes a first emission layer and a second emission layer having different wavelength ranges. A dopant content in the first emission layer is lower than a dopant content in the second emission layer.

公开(公告)号：US20170117331A1

公开(公告)日：2017-04-27

申请号：US15160256

申请日：2016-05-20

Applicant: LG Display Co., Ltd.

Inventor： TaeSeok Lim ,  Taeshick Kim ,  Seung Kim ,  Jaeseung Jang

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

CPC classification number: H01L27/3211 ,  H01L27/3209 ,  H01L27/322 ,  H01L27/3244 ,  H01L51/5036 ,  H01L51/5044 ,  H01L51/5209 ,  H01L51/5225

Abstract: An organic light emitting display device reduces a grayscale-based color difference of the organic light emitting display device. The organic light emitting display device includes opposite first and second electrodes on a substrate and a plurality of emission parts between the first and second electrodes. At least one among the plurality of emission parts includes a first emission layer and a second emission layer having different wavelength ranges. A dopant content in the first emission layer is lower than a dopant content in the second emission layer.