公开(公告)号：US09257664B2

公开(公告)日：2016-02-09

申请号：US14627439

申请日：2015-02-20

Applicant: Japan Display Inc.

Inventor： Masato Ito ,  Masakazu Gunji ,  Masumi Nishimura

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

CPC classification number: H01L51/5088 ,  H01L27/3244 ,  H01L27/3262 ,  H01L51/0008 ,  H01L51/002 ,  H01L51/0045 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/5278

Abstract: An organic EL display device includes an organic EL element having a first light-emitting portion, a second light-emitting portion, an n-type charge-generation layer, and a p-type charge-generation layer. The first light-emitting portion has a first light-emitting layer and a hole-injection layer. The first light-emitting layer is formed between an anode and a cathode. The hole-injection layer is made of amorphous carbon and in contact with the anode. The second light-emitting portion has a second light-emitting layer, which is formed between the first light-emitting portion and the cathode. The n-type charge-generation layer is formed between the first and second light-emitting portions. The n-type charge-generation layer is in contact with the first light-emitting portion. The p-type charge-generation layer is made of amorphous carbon and formed between the n-type charge-generation layer and the second light-emitting portion. The p-type charge-generation layer is in contact with the second light-emitting portion.

Abstract translation: 有机EL显示装置包括具有第一发光部分，第二发光部分，n型电荷产生层和p型电荷产生层的有机EL元件。 第一发光部具有第一发光层和空穴注入层。 第一发光层形成在阳极和阴极之间。 空穴注入层由无定形碳制成并与阳极接触。 第二发光部具有形成在第一发光部和阴极之间的第二发光层。 n型电荷产生层形成在第一和第二发光部之间。 n型电荷产生层与第一发光部分接触。 p型电荷产生层由n型电荷产生层和第二发光部分之间形成无定形碳。 p型电荷产生层与第二发光部分接触。