发明申请
- 专利标题： LIGHT-EMITTING ELEMENT, DISPLAY DEVICE, AND ELECTRONIC APPLIANCE
- 专利标题（中）： 发光元件，显示设备和电子设备
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申请号： US13161619申请日： 2011-06-16
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公开(公告)号： US20110241007A1公开(公告)日： 2011-10-06
- 发明人: Daisuke KUMAKI , Satoshi SEO
- 申请人： Daisuke KUMAKI , Satoshi SEO
- 申请人地址： JP Atsugi-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
- 优先权： JP2004-227734 20040804
- 主分类号： H01L29/786
- IPC分类号： H01L29/786
摘要：
The present invention provides a light-emitting element having a structure in which the drive voltage is comparatively low and a light-emitting element in which the increase in the drive voltage over time is small. Further, the present invention provides a display device in which the drive voltage and the increase in the drive voltage over time are small and which can resist long-term use. A layer in contact with an electrode in a light-emitting element is a layer containing a P-type semiconductor or a hole-generating layer such as an organic compound layer containing a material having electron-accepting properties. The light-emitting layer is sandwiched between the hole-generating layers, and an electron-generating layer is sandwiched between the light-emitting layer and the hole-generating layer on a cathode side.
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