发明授权
- 专利标题： Semiconductor device and electronic appliance using the same
- 专利标题（中）： 半导体器件和使用该器件的电子设备
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申请号： US11790482申请日： 2007-04-25
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公开(公告)号： US07531784B2公开(公告)日： 2009-05-12
- 发明人: Tatsuya Arao , Atsushi Hirose , Kazuo Nishi , Yuusuke Sugawara
- 申请人： Tatsuya Arao , Atsushi Hirose , Kazuo Nishi , Yuusuke Sugawara
- 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： JP2006-122993 20060427
- 主分类号： H01J40/14
- IPC分类号： H01J40/14
摘要：
An object is to provide a photoelectric conversion device capable of detecting a wider range of illuminance without expansion of a range of an output voltage or output current. The photoelectric conversion device has a photoelectric conversion device including a photoelectric conversion element and an amplifier circuit electrically connected to the photoelectric conversion element, and a bias switching unit for reversing a bias to be applied to the photoelectric conversion device. The bias to be applied to the photoelectric conversion device is reversed with use of the bias switching unit, whereby the photoelectric conversion device can detect a wider range of illuminance without expansion of a range of an output voltage or output current.
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