Patent ID: 8133547

Claim:
A method for forming a fine contact of a semiconductor device, comprising the steps of: (a) providing a coating composition comprising a coating base resin comprising poly(t-butylacrylate/methacrylic acid/methacrylate) and a C 4 -C 10 alcohol as a main solvent; (b) forming a photoresist film on a semiconductor substrate having an underlying layer; (c) patterning the photoresist film to form a first photoresist pattern; and (d) coating the coating composition along a surface of the first photoresist pattern for contact to form a second photoresist pattern for contact, wherein contact regions of the first photoresist pattern and the second photoresist pattern have predetermined diameters, and a contact region of the second photoresist pattern is smaller than a contact region of the first photoresist pattern.