Patent ID: 7888415
Filing Date: 2011-02-15
Classification: C08F,Y10S

Abstract:
1. A negative tone photoresist composition comprising: A) a solvent; B) a photosensitive acid generator; C) a crosslinking agent containing one or more functional groups; and D) one or more negative tone imaging polymers containing one or more functional groups containing moieties having a functional group that is reactive with the functional groups of the crosslinking agent, wherein each negative tone imaging polymer comprises a first monomer unit according to Formula (I): wherein X is selected from —CH 2 —, —CH 2 —CH 2 —, O, S, and —NH—; m is an integer from 0 to 5; and each occurrence of R 1 , R 2 , R 3 and R 4 is independently selected from one of the following groups: a) H, halogen, linear, branched or cyclic C b) linear or branched C c) C d) a hydroxy alkyl ether according to Formula (IV): wherein A is a linking group selected from C 1 to C 6 linear, branched, or cyclic alkylene, each occurrence of R 35 is independently selected from H, methyl, ethyl and a halide, q is from 1 to 5, and p is from 0 to 3; e) a group according to Formula (V): where R 36 is a linear, branched or cyclic C 1 to C 30 , optionally partially or completely halogenated, alkylene, arylene, aralkylene, alkarylene, alkenylene or alkynylene linking group and Z is a functional group selected from hydroxyl, carboxylic acid, amine, thiol, isocyanate, and epoxy; and f) C further wherein the functional groups of the negative tone imaging polymers are selected from the group consisting of a hydroxy alkyl ether according to Formula (IV), where A, R