发明授权
US09063613B2 Image pickup device, display-and-image-pickup device, electronic apparatus and method of detecting an object
有权
图像拾取装置,显示和图像拾取装置,电子装置和检测对象的方法
- 专利标题: Image pickup device, display-and-image-pickup device, electronic apparatus and method of detecting an object
- 专利标题(中): 图像拾取装置,显示和图像拾取装置,电子装置和检测对象的方法
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申请号: US12451485申请日: 2009-03-18
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公开(公告)号: US09063613B2公开(公告)日: 2015-06-23
- 发明人: Tsutomu Harada , Yoshiharu Nakajima , Michiru Senda , Kazunori Yamaguchi , Mitsuru Tateuchi , Ryoichi Tsuzaki , Toshikazu Maekawa
- 申请人: Tsutomu Harada , Yoshiharu Nakajima , Michiru Senda , Kazunori Yamaguchi , Mitsuru Tateuchi , Ryoichi Tsuzaki , Toshikazu Maekawa
- 申请人地址: JP Tokyo
- 专利权人: Japan Display Inc.
- 当前专利权人: Japan Display Inc.
- 当前专利权人地址: JP Tokyo
- 代理机构: Fishman Stewart Yamaguchi PLLC
- 优先权: JP2008-076281 20080324
- 国际申请: PCT/JP2009/055328 WO 20090318
- 国际公布: WO2009/119417 WO 20091001
- 主分类号: G06F3/042
- IPC分类号: G06F3/042 ; G06F3/041 ; G06F3/0488 ; G09G3/34
摘要:
An image pickup device capable of stably detecting an object irrespective of use conditions while reducing manufacturing costs is provided. When illumination light from a backlight 15 is emitted to a proximity object from an I/O display panel 20, an electric charge for charging is accumulated in each of image pickup pixels 33 in accordance with total light amount as a summation of reflected light Lon originating from the illumination light and environment light (outside light) L0. Moreover, when the above-described illumination light is not emitted, an electric charge for discharging is released from each of the image pickup pixels 33 in accordance with light amount of the environment light L0. Thereby, a component by the environment light L0 is subtracted in an image pickup signal obtained from each of the image pickup pixels 33, so object information about the proximity object is obtainable without influence of the environment light L0. Moreover, in a light reception drive circuit 13, a smaller number of necessary frame memories 13A for producing a picked-up image from the image pickup signal than that in related art are necessary.