Invention Grant
- Patent Title: Organic electroluminescent device
- Patent Title (中): 有机电致发光器件
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Application No.: US12993051Application Date: 2009-05-15
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Publication No.: US08771841B2Publication Date: 2014-07-08
- Inventor: Norimasa Yokoyama , Shigeru Kusano , Shuichi Hayashi
- Applicant: Norimasa Yokoyama , Shigeru Kusano , Shuichi Hayashi
- Applicant Address: JP Tokyo
- Assignee: Hodogaya Chemical Co., Ltd.
- Current Assignee: Hodogaya Chemical Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-129340 20080516; JP2008-173023 20080702
- International Application: PCT/JP2009/059093 WO 20090515
- International Announcement: WO2009/139475 WO 20091119
- Main IPC: H01L51/54
- IPC: H01L51/54

Abstract:
A problem of the invention is to provide an organic EL device having a high efficiency, a low driving voltage and a long life, by combining various materials for organic EL device, which are excellent in an injection or transportation performance of holes or electrons, and in stability and durability in a thin film, so as to enable the respective materials to effectively reveal their characteristics. The invention relates to an organic electroluminescent device including at least an anode electrode, a hole-injecting layer, a hole-transporting layer, an emitting layer, an electron-transporting layer and a cathode electrode in this order, in which the hole-injecting layer contains an arylamine compound having, in its molecule, a structure in which three or more triphenylamine structures are connected through a single bond or a hetero atom-free divalent group; and the hole-transporting layer contains an arylamine compound having two triphenylamine structures in its molecule.
Public/Granted literature
- US20110073852A1 ORGANIC ELECTROLUMINESCENT DEVICE Public/Granted day:2011-03-31
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