Patent ID: 7132216
Filing Date: 2006-11-07
Classification: G03F,Y10S

Abstract:
1. In a composition for use during microlithographic processes, said composition comprising a polymer binder dissolved in a solvent system, the improvement which comprises a non-aromatic, light attenuating compound comprising a moiety selected from the group consisting of: where: where: where: R 2 is non-aromatic and is individually an acyclic or cyclic alkyl or heteroalkyl, or an electron-withdrawing group; and EWG is a non-aromatic electron-withdrawing group; where: R 2 is non-aromatic and is individually an acyclic or cyclic alkyl or heteroalkyl, or an electron-withdrawing group; and EWG is a non-aromatic electron-withdrawing group; and mixtures thereof, wherein said polymer binder comprises a backbone, and at least one of R 1 and R 2 of said light attenuating compound is bonded to the polymer binder backbone.