Patent ID: 7679114

Claim:
An image pickup device comprising a pixel region having a plurality of pixels arranged on a principal surface of a semiconductor substrate, wherein each pixel includes: a photoelectric conversion element that includes a first semiconductor region for accumulating signal charges, the first semiconductor region being of a first conductivity type; an amplifying portion for amplifying the signal charges from the photoelectric conversion element; a transfer transistor for transferring the signal charges from the photoelectric conversion element to the amplifying portion; and a reset transistor for resetting a potential of an input node of the amplifying portion, and wherein the pixel region includes: a well of a second conductivity type in which the amplifying portion is arranged, the well of the second conductivity type being arranged such that no element isolation region is positioned between the first semiconductor region and the well of the second conductivity type; a second semiconductor region of the second conductivity type for regulating a potential of the well of the secondconductivity type; an offset region positioned betweenthe second semiconductor region and the first semiconductor region; and an element isolation region positioned between the transfer transistor and the reset transistor.