Patent ID: 7993953
Filing Date: 2011-08-09
Classification: H01L

Abstract:
1. A method of manufacturing a photoelectric conversion device, the method comprising: a first step of forming a first insulating film on a semiconductor substrate; a second step of forming a gate electrode by forming an electrically conductive layer on the first insulating film and patterning the electrically conductive layer; a third step of etching an exposed surface of the first insulating film; a forth step of forming a charge accumulation region of a photoelectric converter by implanting impurity ions of a first conductivity type into the semiconductor substrate through a thinned portion of the first insulating film formed by the etching; a fifth step of removing the thinned portion after the fourth step; a sixth step of forming a second insulating film covering the semiconductor substrate and the gate electrode; and a seventh step of forming a surface region of the photoelectric converter by implanting impurity ions of a second conductivity type opposite to the first conductivity type into the semiconductor substrate through the second insulating film.