Patent ID: 6974657

Claim:
A photoresist composition comprising: a fluorine-containing polymer prepared from at least (A) a spacer group selected from the group consisting CH 2 ═CH 2 , alpha-olefins, 1,1′-disubstituted olefins, vinyl alcohols, vinyl ethers, and 1,3-dienes; and (B) a repeat unit derived from a monomer having the following structure: wherein each of R 1 , R 2 , R 3 , and R 4 independently is hydrogen, a halogen atom, a hydrocarbon group containing from 1 to 10 carbon atoms, a substituted hydrocarbon group, an alkoxy group, a carboxylic acid, a carboxylic ester or a functional group containing the structure: —C(R f )(R f ′)OR b wherein R f and R f ′ are the same or different fluoroalkyl groups of from 1 to 10 carbon atoms or taken together are (CR 2 ) n wherein n is 2 to 10; R b is hydrogen or an acid- or base-labile protecting group; r is 0-4; at least one of the repeat units (B) has a structure whereby at least one of R 1 , R 2 , R 3 , and R 4 contains the structure C(R f )(R f ′)OR b , and (b) at least one photoactive component, wherein the fluorine-containing polymer has an absorption coefficient of less than 4.0 μm −1 at a wavelength of 157 nm, and wherein the photoactive component is chemically bonded to the fluorine-containing polymer.