Patent ID: 6569599
Filing Date: 2003-05-27
Classification: G03F,Y10S

Abstract:
A photoresist polymer derived from a monomer comprising:(i) a first monomer selected from the group consisting of compounds of the formula: and mixtures thereof,whereinX1, X2, Y1 and Y2 are alkylene; R5 is hydrogen or alkyl; s and t are integers from 0 to 2; n is an integer from 1 to 5; and X is a moiety of the formula: whereineach of R1, R2, R3 and R4 is independently hydrogen, C1-C10 alkyl, or C1-C10 alkyl comprising an ether linkage; (ii) a second monomer of the formula: whereinR6 is hydrogen or alkyl; R7 is an acid labile protecting group; and m is an integer from 0 to 5; and (iii) a third monomer of the formula: whereinR8 is hydrogen or alkyl.