Patent ID: 8766160

Claim:
A solid-state imaging device comprising: a first substrate; a second substrate electrically connected to the first substrate; and circuit elements disposed in the first substrate and in the second substrate, and forming pixels, wherein each of the pixels comprising: photoelectric conversion units disposed in the first substrate; a first transistor disposed in the first substrate or in the second substrate, formed at a first conductive type well layer, and configured to amplify a signal generated by the photoelectric conversion units and to output the amplified signal; a signal storage circuit disposed in the second substrate, and configured to store the amplified signal output from the first transistors; and a second transistor disposed in the second substrate, having a source terminal or a drain terminal connected to the signal storage circuit, and formed at a second conductive type well layer which is different from the first conductive type well layer, wherein a difference between a potential of a back gate of the second transistor and a potential at a time of resetting the signal storage circuit is less than a difference between a potential of a back gate of the first transistor and the potential at the time of resetting the signal storage circuit.