Patent ID: 8395193

Claim:
A MOS-type solid-state image pickup device, on a semiconductor substrate of a second conductivity type, comprising: a photoelectric conversion unit having a first semiconductor region of a first conductive type, a second semiconductor region of a second conductive type forming a pn-junction with the first semiconductor region, and a third semiconductor region of the first conductive type disposed on the second semiconductor region; a transfer gate electrode disposed on an insulation film and transferring a carrier from the second semiconductor region to a fourth semiconductor region of the second conductivity type; and an amplifying MOS transistor having a gate electrode connected to the fourth semiconductor region; wherein the second semiconductor region is arranged to extend under the transfer gate electrode, wherein an entire surface of the third semiconductor region is covered with the insulation film, and a side portion of the third semiconductor region that is laterally opposite to the transfer gate electrode is extended to outside of the second semiconductor region.