Patent ID: 6596593
Filing Date: 2003-07-22
Classification: H01L

Abstract:
A method of manufacturing an insulating-gate-type semiconductor device, comprising:a first step of forming a polycrystalline silicon gate in a vicinity of a surface of a P-type semiconductor substrate with a gate insulating film interposed between the polycrystalline silicon gate and the P-type semiconductor substrate; a second step of forming oxygen-ion implanted regions by implantation of oxygen ions into the polycrystalline silicon gate and a region in the vicinity of the surface of the P-type semiconductor substrate; a third step of forming oxide films by high-temperature annealing of the oxygen-ion implanted regions; a fourth step of forming N-type impurity regions through introduction of N-type impurities in a self-alignment manner with respect to a gate electrode formed of the polycrystalline silicon gate; and a fifth step of forming N-type high-concentration impurity regions through introduction of N-type impurities at a distance from the gate electrode.