Patent ID: 6514664
Filing Date: 2003-02-04
Classification: G03F,Y10S

Abstract:
A radiation sensitive chemically amplified photoresist composition wherein the improvement comprises the inclusion in the composition of a heterocyclic additive selected from the group consisting of: 1-phenyl-2-pyrrolidinone and compounds of the formulas (I), (II), (III), and (IV): where R1 is â€”H, â€”NH2â€”, â€”OH, â€”N(CH3)2, â€”NHâ€”COâ€”CH3, or where R2 is â€”CH3 or benzoyl; where R3 is â€”H, or C1-C4 alkyl; W, X, Y, and Z are each independently selected from â€”CH2â€”, â€ƒâ€”CH(CH3)â€”, â€”C(CH3)2â€”, â€”NHâ€”, or â€”N(CH3)â€”, with the proviso that at least one of W, X, Y, or Z is â€ƒand at least one of W, X, Y, or Z is â€”NHâ€” or â€”N(CH3)â€”; where A is â€”CH&boxH; or R4 is â€”H, â€”CH3, or â€”CH2â€”CH(CH3)2; R5 is â€”H, â€”CH3, or â€”CH2â€”CH(OH)â€”CH2(OH); R6 is â€”H; B and D are identical and selected from one p and q is 0 and the other p and q is 1, when A is â€”CH&boxH;; and p and q are both 1, when A is and mixtures thereof.