发明申请
- 专利标题： Light-emitting device
- 专利标题（中）： 发光装置
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申请号： US11707414申请日： 2007-02-16
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公开(公告)号： US20070200112A1公开(公告)日： 2007-08-30
- 发明人: Shunpei Yamazaki , Junichiro Sakata , Takahiro Kawakami , Yoshiaki Yamamoto , Miki Katayama , Kohei Yokoyama , Yasuyuki Arai
- 申请人： Shunpei Yamazaki , Junichiro Sakata , Takahiro Kawakami , Yoshiaki Yamamoto , Miki Katayama , Kohei Yokoyama , Yasuyuki Arai
- 优先权： JP2006-049322 20060224
- 主分类号： H01L29/04
- IPC分类号： H01L29/04
摘要：
It is an object of the present invention to provide a light-emitting device with high current efficiency and high display quality, in which a change in luminance with time is suppressed. The light-emitting device is provided with a plurality of light-emitting elements in each of which a plurality of light-emitting units each including at least one light-emitting layer are connected in series between a pair of electrodes. Between one of light-emitting units and the other light-emitting unit, an intermediate conductive layer is provided in the light-emitting unit. The light-emitting layer includes base material which is a compound containing an element belonging to group 2 and an element belonging to group 16 or a compound containing an element belonging to group 12 and an element belonging to group 16, and an impurity element which is an emission center. This structure makes it possible to increase light emission luminance without increasing current density.
公开/授权文献
- US07528418B2 Light-emitting device 公开/授权日：2009-05-05
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