Invention Grant
- Patent Title: Aromatic amine derivative, and organic electroluminescent element
- Patent Title (中): 芳族胺衍生物和有机电致发光元件
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Application No.: US13404360Application Date: 2012-02-24
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Publication No.: US09054322B2Publication Date: 2015-06-09
- Inventor: Nobuhiro Yabunouchi , Masahiro Kawamura , Tomoki Kato
- Applicant: Nobuhiro Yabunouchi , Masahiro Kawamura , Tomoki Kato
- Applicant Address: JP Tokyo
- Assignee: Idemitsu Kosan Co., Ltd.
- Current Assignee: Idemitsu Kosan Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Millen, White, Zelano & Branigan, P.C.
- Priority: JP2008-299983 20081125; JP2009-003660 20090109; JP2009-086441 20090331
- Main IPC: H01L51/54
- IPC: H01L51/54 ; C07D307/91 ; H01L51/00 ; C07D405/12 ; C07D405/14 ; C07D407/12 ; C07D407/14 ; C09K11/06 ; H05B33/14 ; H01L51/50

Abstract:
Provided is an organic electroluminescence device that provides high efficiency and a long lifetime. The device includes an aromatic amine including at least one substituent A having dibenzofuran and at least one substituent B selected from groups having dibenzofuran or carbazole. The substituent A and the substituent B include groups different from each other and are bonded to the same or different nitrogen atoms in the molecule. The molecules of the aromatic amine hardly crystallize, improving yield in producing the organic electroluminescence device. The device includes an organic thin film layer formed of one or more layers including at least a light emitting layer, the organic thin film layer being interposed between a cathode and an anode. The aromatic amine is contained in at least one layer, particularly a hole transport layer, in the organic thin film layer.
Public/Granted literature
- US20120175600A1 AROMATIC AMINE DERIVATIVE, AND ORGANIC ELECTROLUMINESCENT ELEMENT Public/Granted day:2012-07-12
Information query
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