发明授权
US08698389B2 Light-emitting organic compound and EL display device utilizing the same
有权
发光有机化合物和利用其的EL显示装置
- 专利标题： Light-emitting organic compound and EL display device utilizing the same
- 专利标题（中）： 发光有机化合物和利用其的EL显示装置
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申请号： US13286608申请日： 2011-11-01
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公开(公告)号： US08698389B2公开(公告)日： 2014-04-15
- 发明人: Shunpei Yamazaki , Toshimitsu Konuma , Mayumi Mizukami
- 申请人： Shunpei Yamazaki , Toshimitsu Konuma , Mayumi Mizukami
- 申请人地址： JP Atsugi-shi, Kanagawa-ken
- 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-ken
- 代理机构： Robinson Intellectual Property Law Office, P.C.
- 代理商 Eric J. Robinson
- 优先权： JP11-271297 19990924; JP11-275391 19990928; JP11-336100 19991126; JP11-336119 19991126
- 主分类号： H01L51/54
- IPC分类号： H01L51/54
摘要：
By repeating a purification process of a light-emitting organic compound several times, a thin film made of the light-emitting organic compound to be used in an EL display device contains ionic impurities at the concentration of 0.1 ppm or lower and has a volume resistivity in the range of 3×1010 Ωcm or larger. By using such a thin film as a light-emitting layer in the EL device, a current caused by reasons other than the carrier recombination can be prevented from flowing through the thin film, and deterioration caused by unnecessary heat generation can be suppressed. Accordingly, it is possible to obtain an EL display device with high reliability.
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