Patent ID: 7361947

Claim:
A photoelectric conversion element comprising: a p-MOS structure that includes: a semiconductor layer including a pair of p + regions in which p-type impurities are doped, and a p − region which is disposed between the p + regions and has a lower p-type impurity concentration than the p + regions; a gate electrode formed over the p − region via an insulation film, a width of the gate electrode being less than a width of the p − region; and a p − region, which is a portion of the p − region and is located immediately below the gate electrode, forming a light receiving layer, and p − regions, which are portions of the p − region and are located away from below the gate electrode, forming lightly-doped drain regions; an anode electrode which is connected to one of the p + regions; and a cathode electrode which is connected to the other of the p + regions, wherein the anode electrode and the cathode electrode are arranged to cover the lightly-doped drain regions and parts of the gate electrode, and constitute light shield layers.