Solid state image sensor

Claim 1

A solid state image sensor comprising a plurality of row lines; a vertical scanning means for successively supplying row selection signals to said plurality of row lines; a plurality of column lines; a horizontal scanning means for successively supplying column selection signals to said plurality of column lines; a plurality of pixels connected at cross points between the row and column lines, each of said pixels including a static induction transistor having a first main electrode connected to a column line, a second main electrode connected commonly to second main electrodes of other static induction transistors, a channel region arranged between the first and second main electrodes, and a gate region, a capacitor connected between the gate region of the respective static induction transistor and a row line, and a photoconductive film connected to the gate region of the respective static induction transistor, said capacitor comprising a gate electrode connected to the gate region, said photoconductive film applied on the gate electrode and a transparent electrode applied on the photoconductive film; and a video line connected selectively to the column lines to readout a video signal from the pixels.