Patent ID: 7166504
Filing Date: 2007-01-23
Classification: H01L

Abstract:
1. A semiconductor device manufacturing method comprising the steps of: (a) forming a resistive interconnection and a gate electrode on a substrate; (b) implanting impurity ions into a surface of said substrate to form a diffusion layer; (c) forming an insulating film to cover said resistive interconnection and said gate electrode; and (d) heating said substrate after said step (c) to activate said diffusion layer, and further comprising, after said step (c), the steps of: (e) forming an opening in said insulating film covering an upper surface of said resistive interconnection, said opening reaching said resistive interconnection; (f) after said step (e), forming an interlayer insulating film covering said resistive interconnection and said gate electrode; and (g) forming a first contact hole extending from an upper surface of said interlayer insulating film to reach said gate electrode and forming a second contact hole extending from the upper surface of said interlayer insulating film through said opening to reach said resistive interconnection.