公开(公告)号：US09923030B2

公开(公告)日：2018-03-20

申请号：US14948579

申请日：2015-11-23

Applicant: LG Display Co., Ltd.

Inventor： Kwanghyun Kim

IPC: H01L51/00 ,  H01L27/32 ,  H01L51/50 ,  C07F15/00 ,  C09K11/06 ,  C07F5/06 ,  C07F3/00

CPC classification number: H01L27/3206 ,  C07F3/006 ,  C07F5/06 ,  C07F15/0033 ,  C09K11/06 ,  H01L51/0072 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/0094 ,  H01L51/5016 ,  H01L2251/5384 ,  H01L2251/552

Abstract: An organic light-emitting device includes a red emission layer formed by mixing a first host made of a carbazole-based material, a second host made of a metal complex and a dopant. Accordingly, the driving voltage of the organic light-emitting device can be reduced, and thus power consumption of the organic light-emitting device can be improved. In addition, by mixing the first host and the second host having differences in energy level in the red emission layer, the luminous efficiency of the red emission layer of the organic light-emitting device can be improved. Thus, the lifetime of the organic light-emitting device can be elongated.

公开(公告)号：US20170125736A1

公开(公告)日：2017-05-04

申请号：US15338869

申请日：2016-10-31

Applicant: LG Display Co., Ltd.

Inventor： Kwanghyun Kim ,  JinHo Park

IPC: H01L51/52 ,  H01L51/50

CPC classification number: H01L51/5265 ,  H01L27/3211 ,  H01L51/5036 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5218 ,  H01L51/5234 ,  H01L51/5253 ,  H01L2251/558

Abstract: An organic light-emitting display (OLED) device is disclosed that includes: a red organic light-emitting diode comprising a red organic emission layer; a green organic light-emitting diode comprising a green organic emission layer; and a blue organic light-emitting diode comprising a blue organic emission layer. The difference between a peak of a photoluminescence spectrum of the red organic emission layer and a peak of an electroluminescence spectrum of the red organic light-emitting diode is less than 2 nm, the difference between a peak of a PL spectrum of the green organic emission layer and a peak of an EL spectrum of the green organic light-emitting diode is less than 2 nm, and the difference between a peak of a PL spectrum of the blue organic emission layer and a peak of an EL spectrum of the blue organic light-emitting diode is 4 nm or greater.

公开(公告)号：US10256438B2

公开(公告)日：2019-04-09

申请号：US15338869

申请日：2016-10-31

Applicant: LG Display Co., Ltd.

Inventor： Kwanghyun Kim ,  JinHo Park

IPC: H01L51/50 ,  H01L51/52

Abstract: An organic light-emitting display (OLED) device is disclosed that includes: a red organic light-emitting diode comprising a red organic emission layer; a green organic light-emitting diode comprising a green organic emission layer; and a blue organic light-emitting diode comprising a blue organic emission layer. The difference between a peak of a photoluminescence spectrum of the red organic emission layer and a peak of an electroluminescence spectrum of the red organic light-emitting diode is less than 2 nm, the difference between a peak of a PL spectrum of the green organic emission layer and a peak of an EL spectrum of the green organic light-emitting diode is less than 2 nm, and the difference between a peak of a PL spectrum of the blue organic emission layer and a peak of an EL spectrum of the blue organic light-emitting diode is 4 nm or greater.