Patent ID: 8377626

Claim:
A method of forming a pattern, the method comprising: forming a photoresist film on a substrate by coating a photoresist composition thereon, the photoresist composition including a polymer, a photoacid generator, and a solvent, wherein: the polymer includes an alkoxysilyl group as a side chain and is cross-linkable by an acid to be insoluble in a developer, and the polymer is prepared by polymerization of a monomer mixture including at least about 40 mole % of a monomer including an alkoxysilyl group; curing a first portion of the photoresist film by exposing the first portion to light, the exposed first portion being cured by a cross-linking reaction of the alkoxysilyl groups therein and being cured at a temperature of less than about 60° C.; and providing a developer to the photoresist film to remove a second portion of the photoresist film that is not exposed to light, thereby forming a photoresist pattern on the substrate.