Invention Grant
US08703303B2 Organic electroluminescent device having a light-emitting layer comprising a host material of two or more compounds
有权
具有包含两种或更多种化合物的主体材料的发光层的有机电致发光器件
- Patent Title: Organic electroluminescent device having a light-emitting layer comprising a host material of two or more compounds
- Patent Title (中): 具有包含两种或更多种化合物的主体材料的发光层的有机电致发光器件
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Application No.: US12991301Application Date: 2009-04-30
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Publication No.: US08703303B2Publication Date: 2014-04-22
- Inventor: Toshihiro Yamamoto , Takahiro Kai , Masaki Komori , Taishi Tsuji , Yasuhiro Takahashi , Toshinao Yuki , Yusuke Nakajima , Tomoaki Hoshi , Jiro Asaka
- Applicant: Toshihiro Yamamoto , Takahiro Kai , Masaki Komori , Taishi Tsuji , Yasuhiro Takahashi , Toshinao Yuki , Yusuke Nakajima , Tomoaki Hoshi , Jiro Asaka
- Applicant Address: JP Tokyo JP Kawasaki-Shi JP Tendo-Shi
- Assignee: Nippon Steel & Sumikin Chemical Co., Ltd.,Pioneer Corporation,Tohoku Pioneer Corporation
- Current Assignee: Nippon Steel & Sumikin Chemical Co., Ltd.,Pioneer Corporation,Tohoku Pioneer Corporation
- Current Assignee Address: JP Tokyo JP Kawasaki-Shi JP Tendo-Shi
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2008-122052 20080508; JP2008-122053 20080508
- International Application: PCT/JP2009/058526 WO 20090430
- International Announcement: WO2009/136596 WO 20091112
- Main IPC: H01L51/54
- IPC: H01L51/54 ; C09K11/06

Abstract:
Disclosed is an organic electroluminescent device (organic EL device) that is improved in the luminous efficiency, fully secured of the driving stability, and of a simple structure. The organic EL device comprises a light-emitting layer between an anode and a cathode piled one upon another on a substrate and the said light-emitting layer comprises (A) a phosphorescent dopant whose emission peak wavelength is longer than 600 nm and (B) a host material. The host material contains at least two kinds of compounds selected from two or more kinds of derivatives included in (b1) N-substituted indolocarbazole derivatives, (b2) derivatives of 8-hydroxyquinoline aluminum complex, and (b3) bisindolocarbazole derivatives.
Public/Granted literature
- US20110062862A1 ORGANIC ELECTROLUMINESCENT DEVICE Public/Granted day:2011-03-17
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