Patent ID: 6335236
Filing Date: 2002-01-01
Classification: H01L

Abstract:
A manufacturing method of a semiconductor device, comprising the steps of:forming an isolation region in a semiconductor substrate by using an insulating film, thereby isolating from each other a first region and a second region that is different from the first region; forming a thin insulating film on said first region and said second region; forming a conductive film on said thin insulating film; forming a second insulating film on said conductive film; working said second insulating film by patterning said first region using a first resist mask and by etching in said first region, at the same, removing the entire second insulating film by etching in said second region; working said conductive film by patterning said second region using a second resist mask and by etching in said second region, at the same time, working said conductive film by patterning said first region using the second insulating film worked by said step of working said second insulating film as a hard mask and by etching in said first region; forming dissusion layers on said first region and said second region by implanting impurity ions; and forming silicide films in portions on said second region, whereby said first region and said second region are formed on said semiconductor substrate.