Patent ID: 6815271
Filing Date: 2004-11-09
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device comprising:forming first and second semiconductor layers over a substrate; forming a gate insulating film on the first and second semiconductor layers; forming first and second gate electrodes over the first and second semiconductor layers, respectively with the gate insulating film interposed therebetween; forming an insulating film over the first and second gate electrodes and the gate insulating film; etching the insulating film, wherein the insulating film is partly remained on side surfaces of the first and second gate electrodes; first doping an N-type impurity using the partly remained insulating film as masks; removing the partly remained insulating film; second doping an N-type impurity using the first and second gate electrodes as masks; forming a resist mask covering the first semiconductor layer and the first gate electrode; and third doping a P-type impurity using the second gate electrode as a mask.