Patent ID: 6284438
Filing Date: 2001-09-04
Classification: G03F

Abstract:
A method for manufacturing a photoresist pattern, comprising:providing a semiconductor substrate;forming a material film to be patterned on the semiconductor substrate;forming a photoresist film on the material film by coating thereon a photoresist composition comprising: (i) either a polymer mixture I containing a polymer A in which an acid-labile di-alkyl malonate group is pendant to the polymer backbone and a polymer B in which a group that thermally decomposes at a temperature lower than the glass transition temperature of the polymer B itself is pendant to the polymer backbone, or a polymer mixture II containing the polymer B and a polymer C including (meth)acrylate as a monomer; and (ii) a photosensitive acid generator;forming a photoresist pattern defining an opening by patterning the photoresist film; andreducing the size of the opening by performing a first thermal flow process on the photoresist pattern.