公开(公告)号：US09490434B2

公开(公告)日：2016-11-08

申请号：US14696570

申请日：2015-04-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jihyun Seo ,  Mikyung Kim ,  Yunjee Park ,  Seunggak Yang

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

CPC classification number: H01L51/0074 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0067 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/5004 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/506 ,  H01L51/5064 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5206 ,  H01L2251/308 ,  H01L2251/552

Abstract: An organic light-emitting device includes an organic layer including an emission layer between a first electrode and the second electrode, and a hole transport region including an auxiliary layer between the first electrode and the emission layer, the hole transport region. The auxiliary layer includes a first material and a second material that satisfy Equations 1-1 and 1-2: 0 eV 0 eV wherein in Equation 1-1 and 1-2, EH1 is a highest occupied molecular orbital energy (HOMO energy) of the first material; EL1 is a lowest unoccupied molecular orbital energy (LUMO energy) of the first material; EH2 is a HOMO energy of the second material; and EL2 is a LUMO energy of the second material.

公开(公告)号：US09461272B2

公开(公告)日：2016-10-04

申请号：US14740538

申请日：2015-06-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seunggak Yang

IPC: H01L51/52 ,  H01L51/00

CPC classification number: H01L51/5262 ,  H01L51/0054 ,  H01L51/0067 ,  H01L51/5206 ,  H01L51/5234

Abstract: An organic light-emitting device including a first electrode; a second electrode facing the first electrode; an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, and a light-efficiency improvement layer that includes at least one selected from a first light-efficiency improvement layer and a second light-efficiency improvement layer, wherein the first light-efficiency improvement layer is disposed in a path of light that is generated in the emission layer and emitted toward an outside of the organic light-emitting device through the first electrode; the second light-efficiency improvement layer is disposed in a path of light that is generated in the emission layer and emitted toward the outside of the organic light-emitting device through the second electrode; and the light-efficiency improvement layer includes a phosphine oxide compound represented by the following Formula 1: