公开(公告)号：US09853231B2

公开(公告)日：2017-12-26

申请号：US15152190

申请日：2016-05-11

Applicant: LG Display Co., Ltd.

Inventor： YoungKwan Jung ,  Heedong Choi ,  Seunghyun Kim

IPC: H01L29/08 ,  H01L21/00 ,  H01L51/50 ,  H01L51/52 ,  H01L27/32 ,  H01L27/12 ,  H01L51/00

CPC classification number: H01L51/504 ,  H01L27/1214 ,  H01L27/3246 ,  H01L27/3248 ,  H01L27/3258 ,  H01L27/3262 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/5004 ,  H01L51/5016 ,  H01L51/5056 ,  H01L51/5096 ,  H01L51/5278 ,  H01L2251/5376 ,  H01L2251/552 ,  H01L2251/558

Abstract: Disclosed is an organic light emitting display device. The organic light emitting display device includes a first emission part between a first electrode and a second electrode and a second emission part on the first emission part. The first emission part includes a first hole transport layer and a first emission layer, and the second emission part includes a second hole transport layer and a second emission layer. A thickness of the second hole transport layer is greater than a thickness of the first hole transport layer.

公开(公告)号：US10170721B2

公开(公告)日：2019-01-01

申请号：US15817124

申请日：2017-11-17

Applicant: LG Display Co., Ltd.

Inventor： YoungKwan Jung ,  Heedong Choi ,  Seunghyun Kim

IPC: H01L29/08 ,  H01L21/00 ,  H01L51/50 ,  H01L51/52 ,  H01L27/32 ,  H01L27/12 ,  H01L51/00

Abstract: Disclosed is an organic light emitting display device. The organic light emitting display device includes a first emission part between a first electrode and a second electrode and a second emission part on the first emission part. The first emission part includes a first hole transport layer and a first emission layer, and the second emission part includes a second hole transport layer and a second emission layer. A thickness of the second hole transport layer is greater than a thickness of the first hole transport layer.

公开(公告)号：US20170125714A1

公开(公告)日：2017-05-04

申请号：US15197625

申请日：2016-06-29

Applicant: LG Display Co., Ltd.

Inventor： YoungKwan Jung ,  Heedong Choi ,  Seunghyun Kim

IPC: H01L51/50 ,  H01L51/52

CPC classification number: H01L51/504 ,  H01L27/3209 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5218 ,  H01L51/5234 ,  H01L51/5278 ,  H01L2251/5315 ,  H01L2251/558

Abstract: Disclosed is an organic light emitting display (OLED) apparatus which facilitates to lower a driving voltage and to improve a lifespan by optimizing a balance of electrons and holes among a plurality of stacks, wherein the OLED apparatus may include the plurality of stacks disposed between an anode and a cathode, and a plurality of charge generation layers for supplying charges to the plurality of stacks, wherein a thickness of the charge generation layer disposed relatively close to the anode is relatively larger than a thickness of the charge generation layer disposed relatively close to the cathode.

公开(公告)号：US09741957B2

公开(公告)日：2017-08-22

申请号：US15197625

申请日：2016-06-29

Applicant: LG Display Co., Ltd.

Inventor： YoungKwan Jung ,  Heedong Choi ,  Seunghyun Kim

IPC: H01L51/52 ,  H01L51/50

CPC classification number: H01L51/504 ,  H01L27/3209 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5218 ,  H01L51/5234 ,  H01L51/5278 ,  H01L2251/5315 ,  H01L2251/558

Abstract: Disclosed is an organic light emitting display (OLED) apparatus which facilitates to lower a driving voltage and to improve a lifespan by optimizing a balance of electrons and holes among a plurality of stacks, wherein the OLED apparatus may include the plurality of stacks disposed between an anode and a cathode, and a plurality of charge generation layers for supplying charges to the plurality of stacks, wherein a thickness of the charge generation layer disposed relatively close to the anode is relatively larger than a thickness of the charge generation layer disposed relatively close to the cathode.