Patent ID: 8416473

Claim:
A solid-state imaging device comprising: a pixel region in which a plurality of pixels are arranged, each of the pixels including a photoelectric conversion element; a plurality of amplifying transistors of a first conductivity type arranged in the pixel region, each of the amplifying transistors being arranged correspondingly to one of the pixels, wherein each amplifying transistor includes a gate that receives a charge generated in one of the photoelectric conversion elements; a common well of a second conductivity type in which source and drain regions of the plurality of amplifying transistors are arranged; a plurality of semiconductor regions of the second conductivity type arranged in the common well of the second conductivity type within the pixel region; and a plurality of well contacts arranged in the pixel region, wherein the well contacts are electrically contacted, and supply a reference voltage to the common well, and wherein each of the well contacts is shared by more than one of the pixels.