发明授权
- 专利标题： Light-emitting element using spirofluorene derivative and electronic appliance
- 专利标题（中）： 使用螺芴衍生物和电子器具的发光元件
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申请号： US12071636申请日： 2008-02-25
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公开(公告)号： US08304094B2公开(公告)日： 2012-11-06
- 发明人: Nobuharu Ohsawa , Sachiko Kawakami , Harue Osaka
- 申请人： Nobuharu Ohsawa , Sachiko Kawakami , Harue Osaka
- 申请人地址： JP Atsugi-shi, Kanagawa-shi
- 专利权人： Semiconductor Energy Laboratory Co., Ltd.
- 当前专利权人： Semiconductor Energy Laboratory Co., Ltd.
- 当前专利权人地址： JP Atsugi-shi, Kanagawa-shi
- 代理机构： Robinson Intellectual Property Law Office, P.C.
- 代理商 Eric J. Robinson
- 优先权： JP2007-049843 20070228
- 主分类号： H01L51/54
- IPC分类号： H01L51/54
摘要：
It is an object to provide a light-emitting element with high luminous efficiency by using a hole transporting substance with a sufficiently high T1 level. Further, it is another object to provide a light-emitting device and an electronic appliance with low power consumption by using a hole transporting substance with a sufficiently high T1 level. The present invention provides a light-emitting element which has a first layer containing a spiro-9,9′-bifluorene derivative in which one amino group is combined and a second layer containing a phosphorescent compound between an anode and a cathode.
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