Patent ID: 8163588

Claim:
A method for manufacturing a photoelectric conversion device having a pixel array region in which a plurality of pixels are arrayed, each of the plurality of pixels including a photoelectric conversion unit and a transfer transistor, the photoelectric conversion unit including a first semiconductor region of a first conductivity type, for accumulating charges, and a second semiconductor region of a second conductivity type opposite in conductivity type to the first conductivity type, the second semiconductor region being arranged on the first semiconductor region, the transfer transistor being configured to transfer charges in the first semiconductor region to a floating diffusion, the method comprising: forming a gate electrode of the transfer transistor on a semiconductor substrate; forming the floating diffusion in the semiconductor substrate; forming, after the forming of the floating diffusion, an insulation film so as to cover the semiconductor substrate and the gate electrode of the transfer transistor; and forming, in a state in which the semiconductor substrate and the gate electrode of the transfer transistor are covered by the insulation film, the second semiconductor region by implanting ions in the semiconductor substrate, such that the second semiconductor region is formed at a position having an offset from a side face of the gate electrode of the transfer transistor in a direction parallel to a surface of the semiconductor substrate.