| 摘要 |
A solid-state image pickup device including a charge transferrer to transfer a signal charge obtained through photoelectric conversion; a floating diffusion region; a reset means for resetting the potential of the floating diffusion region; and a current source for supplying, to the floating diffusion region, a signal charge corresponding to the quantity of the signal charge transferred by the charge transferrer. The current source such as a current mirror circuit is interposed between the output stage of a horizontal CCD and the floating diffusion region so as to supply thereto a signal charge corresponding to the quantity of the signal charge transferred by the horizontal CCD, hence separating the horizontal CCD and the floating diffusion region potentially from each other, whereby the supply voltage, i.e., the reset voltage for the floating diffusion region, can be set independently of the potential of the horizontal CCD.
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