发明申请
- 专利标题： Organic electroluminescent element and display device or light emitting device equipped with the same
- 专利标题（中）： 有机电致发光元件和显示装置或配备其的发光装置
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申请号： US11477991申请日： 2006-06-29
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公开(公告)号： US20070009762A1公开(公告)日： 2007-01-11
- 发明人: Yuji Hamada , Haruhisa Hashimoto , Masahiro Iyori , Kazuki Nishimura , Kenji Okumoto , Masaya Nakai
- 申请人： Yuji Hamada , Haruhisa Hashimoto , Masahiro Iyori , Kazuki Nishimura , Kenji Okumoto , Masaya Nakai
- 优先权： JPJP2005-193215 20050630
- 主分类号： H01L51/54
- IPC分类号： H01L51/54 ; H05B33/12
摘要：
It is an object of the present invention to provide an organic electroluminescent element having a longer lifetime. In order to accomplish the object, an organic electroluminescent element adapted to comprise a light emitting layer including an organic material between an anode and a cathode is provided with a hole transport layer for transporting holes injected from the anode toward the light emitting layer. Along with the hole transport layer, an intermediate layer having an energy level of a lowest unoccupied molecular orbital lower than those of the hole transport layer and the light emitting layer is provided therebetween.