发明授权
US06864628B2 Light emitting device comprising light-emitting layer having triplet compound and light-emitting layer having singlet compound
有权
发光器件包括具有三线态化合物的发光层和具有单重态化合物的发光层
- 专利标题： Light emitting device comprising light-emitting layer having triplet compound and light-emitting layer having singlet compound
- 专利标题（中）： 发光器件包括具有三线态化合物的发光层和具有单重态化合物的发光层
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申请号： US09938291申请日： 2001-08-24
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公开(公告)号： US06864628B2公开(公告)日： 2005-03-08
- 发明人: Shunpei Yamazaki , Takeshi Nishi , Mayumi Mizukami , Hisao Ikeda
- 申请人： Shunpei Yamazaki , Takeshi Nishi , Mayumi Mizukami , Hisao Ikeda
- 申请人地址： JP 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 Kanagawa-ken
- 代理机构： Robinson Intellectual Property Law Office, P.C.
- 代理商 Eric J. Robinson
- 优先权： JP2000-258260 20000828
- 主分类号： H01L27/32
- IPC分类号： H01L27/32 ; H01L51/50 ; H05B33/00
摘要：
The luminance of different colors of light emitted from EL elements in a pixel portion of a light emitting device is equalized and the luminance of light emitted from the EL elements is raised. The pixel portion of the light emitting device has EL elements whose EL layers contain triplet compounds and EL elements whose EL layers contain singlet compounds in combination. The luminance of light emitted from the plural EL elements is thus equalized. Furthermore, a hole transporting layer has a laminate structure to thereby cause the EL elements to emit light of higher luminance.
公开/授权文献
- US20020050786A1 Light emitting device 公开/授权日：2002-05-02
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