Patent ID: 6846733

Claim:
A method of manufacturing a semiconductor device comprising the steps of: forming a first insulating film on a semiconductor substrate; forming a conductive film on the first insulating film; forming a protective film on said conductive film; etching the protective film and conductive film locally and forming first and second wirings; forming a second insulating film between the first and second wirings; forming a linear/space photo-resist on the first wiring, the second wiring and the second insulating film, which intersects perpendicularly to said first and second wirings; etching said second and first insulating films using said photo-resist and said protective film as a mask to form a contact hole between the first and second wirings and outer sides of the first and second wirings; and forming a third insulating film at least on a side wall of the conductive film and on a side wall of the first insulating film in the contact hole.