Patent ID: 7250970

Claim:
An image pickup device comprising an array of a plurality of pixels including photoelectric conversion portions for accumulating signal charges generated by photoelectric conversion and an amplifying transistor for amplifying the signal charges generated by said photoelectric conversion portion to output the amplified signal charges, said device comprising: a junction-type field effect transistor comprising a main electrode made of a first semiconductor region of a first conduction type connected to a control electrode region of said amplifying transistor included in two pixels adjacent to each other, and a control electrode region made of a second semiconductor region of a second conduction type opposite to the first conductive type having the same electric potential as that of a semiconductor region of the second conduction type included in a semiconductor region forming said photoelectric conversion portions, said junction-type field effect transistors arranged in a same line connecting to each other in series; an electric potential supplying circuit for supplying predetermined electric potential to the main electrode region of said junction-type field effect transistor; and a potential control circuit for controlling electric potential of said first semiconductor region by means of capacity coupling.