Patent ID: 6537736
Filing Date: 2003-03-25
Classification: G03F,Y10S

Abstract:
A pattern formation method comprising the steps of:forming a resist film by applying, on a substrate, a resist material including a base polymer having a sulfonyl group on a main chain wherein said base polymer is represented by any of the following General Formulas 1 through 5; wherein R indicates a hydrogen atom, a hydroxyl group, an alkyl group, a carboxyl group, a carbonic ester, acetal, a group having a cyclic aliphatic, a group having an aromatic ring or a group having a hetero ring; and R1 and R2 are the same or different and selected from the group consisting of a hydrogen atom and an alkyl group; conducting pattern exposure by irradiating said resist film with exposing light, wherein the exposing light is selected from the group consisting of Xe2 laser beam, F2 laser beam, Kr2 laser beam, ArKr laser beam and Ar2 laser beam; and forming a resist pattern by developing said resist film with a developer after the pattern exposure.