公开(公告)号：US10547020B2

公开(公告)日：2020-01-28

申请号：US15661871

申请日：2017-07-27

Applicant: LG Display Co., Ltd.

Inventor： Jae-Seung Jang ,  Tae-Shick Kim ,  Hyung-June Kim ,  Min Yun ,  Tae-Seok Lim

IPC: H01L29/08 ,  H01L51/50 ,  H01L27/32

Abstract: A white organic light emitting device, which is increased in color gamut and lifespan, is discussed and an organic light emitting display device using the same and in a stack having different emission layers disposed in contact with each other, particular properties of a host and a dopant in a major emission layer are used.

公开(公告)号：US10431765B2

公开(公告)日：2019-10-01

申请号：US15693098

申请日：2017-08-31

Applicant: LG Display Co., Ltd.

Inventor： Ji-Young Kim ,  Youn-Seok Kam ,  Ki-Woog Song ,  Tae-Shick Kim ,  Min-Gyu Lee ,  Tae-Seok Lim

IPC: H01L51/50 ,  H01L51/00 ,  H01L51/52 ,  H01L27/32

Abstract: Disclosed are a tandem white organic light emitting diode with long lifespan and low driving voltage, and a display device including the same. The white organic light emitting diode includes a first light emitting part, a second light emitting part and a third light emitting part disposed between a first electrode and a second electrode. The first and third light emitting parts include a blue light emitting layer and the second light emitting part includes a red light emitting layer and a yellow-green light emitting layer. At least one layer of the red light emitting layer and the yellow-green light emitting layer includes a hole transport host based on a compound shown below: wherein each of R1, R2, and R3 are independently selected from hydrogen, heavy hydrogen, a C5-C7 aromatic cyclic and C1-C6 heterocyclic group.

公开(公告)号：US20180062103A1

公开(公告)日：2018-03-01

申请号：US15693098

申请日：2017-08-31

Applicant: LG Display Co., Ltd.

Inventor： Ji-Young Kim ,  Youn-Seok Kam ,  Ki-Woog Song ,  Tae-Shick Kim ,  Min-Gyu Lee ,  Tae-Seok Lim

IPC: H01L51/50

CPC classification number: H01L51/5044 ,  H01L27/3244 ,  H01L51/0072 ,  H01L51/5004 ,  H01L51/5036 ,  H01L51/5072 ,  H01L51/5278 ,  H01L2251/5384

Abstract: Disclosed are a tandem white organic light emitting diode with long lifespan and low driving voltage, and a display device including the same. The white organic light emitting diode includes a first light emitting part, a second light emitting part and a third light emitting part disposed between a first electrode and a second electrode. The first and third light emitting parts include a blue light emitting layer and the second light emitting part includes a red light emitting layer and a yellow-green light emitting layer. At least one layer of the red light emitting layer and the yellow-green light emitting layer includes a hole transport host based on a compound shown below: wherein each of R1, R2, and R3 are independently selected from hydrogen, heavy hydrogen, a C5-C7 aromatic cyclic and C1-C6 heterocyclic group.