Invention Grant
- Patent Title: Organic electroluminescent display device
- Patent Title (中): 有机电致发光显示装置
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Application No.: US14627439Application Date: 2015-02-20
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Publication No.: US09257664B2Publication Date: 2016-02-09
- Inventor: Masato Ito , Masakazu Gunji , Masumi Nishimura
- Applicant: Japan Display Inc.
- Applicant Address: JP Tokyo
- Assignee: Japan Display Inc.
- Current Assignee: Japan Display Inc.
- Current Assignee Address: JP Tokyo
- Agency: Lowe Hauptman & Ham, LLP
- Priority: JP2014-030819 20140220
- Main IPC: H01L51/52
- IPC: H01L51/52 ; H01L51/50 ; H01L27/32 ; H01L51/00

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.
Public/Granted literature
- US20150236291A1 ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE Public/Granted day:2015-08-20
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