Patent ID: 7742089

Claim:
A CMOS solid state imaging device comprising: a pixel portion that performs photoelectric conversion according to a quantity of received light, the pixel portion located within an imaging region having a plurality of pixel portions arranged laterally and longitudinally; a transfer gate used to read out charges obtained through the photoelectric conversion in the pixel portion, peripheral transistors for processing signals from the plurality of pixel portions provided outside a periphery of the imaging portion in a peripheral circuit region, the peripheral transistors including an amplifying transistor, a logic transistor, and a select transistor corresponding to each imaging region being employed in a power supply circuit that controls a current source supplied to the pixel portion read out using the transfer gate or to a transistor in the imaging region associated with the pixel portion, and the power supply circuit being in the peripheral circuit region, a voltage applied to the transfer gate and a voltage supplied to the peripheral transistors are provided separately, wherein, the power supply circuit device is configured such that the voltage applied to the transfer gate is set higher than the voltage applied to the peripheral gate of the peripheral transistors, the voltage applied to the transfer gate being higher to increase a number of signal charges completely transferred from the plurality of pixel portions; wherein the voltage applied to the transfer gate is higher than the voltage supplied to the peripheral transistors by a range of between 0.5 V and 1.0 V, wherein a difference in the voltage to the transfer gate and a voltage supplied to the peripheral transistors affects a gate length of the transfer gate and wherein within the range allows the pixel portion to remain unsusceptible.