发明授权
- 专利标题： Photoelectric conversion apparatus and image pick-up system using the photoelectric conversion apparatus
- 专利标题（中）： 光电转换装置和使用光电转换装置的摄像系统
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申请号： US11608073申请日： 2006-12-07
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公开(公告)号： US07531885B2公开(公告)日： 2009-05-12
- 发明人: Akira Okita , Katsuhito Sakurai , Hiroki Hiyama , Hideaki Takada
- 申请人： Akira Okita , Katsuhito Sakurai , Hiroki Hiyama , Hideaki Takada
- 申请人地址： JP Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： Fitzpatrick, Cella, Harper & Scinto
- 优先权： JP2003-380090 20031110
- 主分类号： H01L29/72
- IPC分类号： H01L29/72
摘要：
A primary object of the present invention is to provide a photoelectric conversion apparatus with less leak current in a floating diffusion region. In order to obtain the above object, a photoelectric conversion apparatus according to the present invention includes a photodiode for converting light into a signal charge, a first semiconductor region having a first conductivity type, a floating diffusion region formed from a second semiconductor region having a second conductivity type for converting the signal charge generated by the photodiode into a signal voltage, the second semiconductor region being formed in the first semiconductor region, and an electrode formed above the first semiconductor region through an insulating film and having an effect of increasing a concentration of majority carriers in the first semiconductor region, in which the electrode is not formed above a depletion region formed from the second semiconductor region.
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