Patent ID: 6911297
Filing Date: 2005-06-28
Classification: G03F

Abstract:
1. A radiation sensitive composition comprising: a) a first photoacid generator (PAG) compound P1, which comprises one or more compounds of the structure (A); b) a second photoacid generator compound P2 which comprises one or more compounds of the structure (B); c) a polymer component comprising an alkali soluble resin component whose alkali solubility is suppressed by the presence of acid sensitive moieties and whose alkali solubility is returned by treatment with an acid and, optionally, heat; wherein said polymer comprises one or more polymers comprising the monomer unit (C); and d) a solvent; wherein structure (A) has the formula: wherein R wherein structure (B) has the formula: wherein each R wherein monomeric unit (C) has the formula: wherein R