In a solid-state imaging device having a semiconductor integrated circuit in which a plurality of switching elements for addressing positions of picture elements and scanning circuitry for turning the switching elements "on" and "off" in time sequence are disposed on an identical substrate, a photoconductive film which is disposed on the integrated circuit and which is connected with the respective switching elements, and a light transmitting electrode which is disposed on the photoconductive film, a voltage being applied to the light transmitting electrode thereby to bias a region of the photoconductive film on a light entrance side either positively or negatively with respect to a region thereof on the opposite side; a solid-state imaging device characterized in that said each switching element is an element which uses carriers of a polarity opposite to that of carriers having a greater mobility in said photoconductive film.