Patent ID: 7718541

Claim:
A method of manufacturing a semiconductor device comprising: forming an interlayer insulator film above a substrate; forming a resist on said interlayer insulator film; forming an aperture in said resist; processing said interlayer insulator film using said resist as a mask to form a groove in said interlayer insulator film based on the surface of said interlayer insulator film; processing said resist a plurality of times to shrink said aperture; applying heat at a temperature equal to or higher than the softening point of the organic matter forming the shrunk region of said aperture after said multiple-round shrink process of said aperture; processing said interlayer insulator film using said resist after shrinkage as a mask to form a connecting hole in said interlayer insulator film according to the shape of said aperture after shrinkage; removing said resist; and depositing conductive material on said interlayer insulator film so as to fill at least said connecting hole.