公开(公告)号：US20160181563A1

公开(公告)日：2016-06-23

申请号：US14918166

申请日：2015-10-20

Applicant: LG DISPLAY CO., LTD.

Inventor： GwiJeong CHO ,  YounSeok KAM ,  TaeSun YOO ,  TaeShick KIM ,  SeUng KIM

IPC: H01L51/50

CPC classification number: H01L51/5056 ,  H01L51/5024 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/506 ,  H01L51/5072

Abstract: A white organic light-emitting display device includes a red emission layer between a charge generation layer and a yellow-green emission layer and having a hole transport-type host. The white organic light-emitting display device can improve brightness, color gamut, and color shift rate since the red emission layer functions as a hole transport layer and an electron blocking layer, as well as an emission layer. The white organic light-emitting display device can further improve the efficiency of the red emission layer by reducing exciton quenching between the charge generation layer and the red emission layer by the insertion of an auxiliary layer composed of a hole transport-type host between the charge generation layer and the red emission layer.

Abstract translation: 白色有机发光显示装置包括在电荷产生层和黄绿色发射层之间并具有空穴传输型主体的红色发射层。 由于红色发光层用作空穴传输层和电子阻挡层以及发射层，白色有机发光显示装置可以提高亮度，色域和色移率。 白色有机发光显示装置可以通过在电荷产生层和红色发射层之间插入由空穴传输型主体构成的辅助层来减少电荷产生层和红色发射层之间的激子淬灭，从而进一步提高红色发射层的效率 发生层和红色发射层。

公开(公告)号：US20190006631A1

公开(公告)日：2019-01-03

申请号：US16022081

申请日：2018-06-28

Applicant: LG Display Co., Ltd.

Inventor： JiYoung KIM ,  SeUng KIM ,  JungSoo PARK

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

CPC classification number: H01L51/5278 ,  H01L27/3244 ,  H01L51/5016 ,  H01L51/504 ,  H01L51/5044 ,  H01L2251/5376 ,  H01L2251/5384 ,  H01L2251/558

Abstract: An organic light-emitting diode includes a first electrode, a first light-emitting unit (EL unit) disposed on the first electrode and including a first organic light-emitting layer, a first charge generating layer on the first EL unit, a second EL unit disposed on the first charge generating layer and including a second organic light-emitting layer, a third organic light-emitting layer and a fourth organic light-emitting layer, a second charge generating layer on the second EL unit, a third EL unit disposed on the second charge generating layer and including a fifth organic light-emitting layer, and a second electrode on the third EL unit. A dopant concentration of the third organic light-emitting layer is greater than a dopant concentration of the fourth organic light-emitting layer. An organic light emitting display device can include the organic light-emitting diode.