公开(公告)号：US08884274B2

公开(公告)日：2014-11-11

申请号：US13648982

申请日：2012-10-10

Applicant: LG Display Co., Ltd.

Inventor： Mi-Young Han ,  Chang-Je Sung ,  Youn-Seok Kam ,  Shin-Han Kim

IPC: H01L35/24

CPC classification number: H01L51/5004 ,  H01L51/5016 ,  H01L51/504

Abstract: A device for achieving reduced driving voltage and enhanced color stability under high luminance conditions includes an anode and cathode arranged on a substrate to be opposite each other, a charge generation layer between the anode and the cathode, a first stack formed between the anode and the charge generation layer and including a first light emitting layer, and a second stack formed between the charge generation layer and the cathode and including a second light emitting layer in which first and second hosts are doped with phosphorescent dopant, a HOMO level of the first host is greater than that of the second host, and a LUMO level of the first host is greater than an LUMO level of the second host.

Abstract translation: 用于在高亮度条件下实现降低的驱动电压和增强的颜色稳定性的装置包括布置在基板上彼此相对的阳极和阴极，阳极和阴极之间的电荷产生层，形成在阳极和阴极之间的第一堆叠 电荷产生层并且包括第一发光层和形成在电荷产生层和阴极之间的第二堆叠，并且包括其中第一和第二主体掺杂有磷光掺杂剂的第二发光层，第一主体的HOMO能级 大于第二主机的LUMO级别，并且第一主机的LUMO级别大于第二主机的LUMO级别。