Patent ID: 6458506
Filing Date: 2002-10-01
Classification: G03F,Y10S

Abstract:
A positive-acting photoresist composition comprising:a resin binder and a photoacid generator compound in an amount sufficient to permit development of an exposed coating layer of the composition, the resin binder selected from the group consisting of 1) a copolymer of a vinyl phenol and alkyl acrylate; 2) an acetal or ketal resin; 3) a polymer containing styrene and/or hydroxystyrene units; or 4) a polymer containing t-butyl acrylate units, the photoacid generator generating an alkoxy anthracene sulfonate acid upon exposure to activating radiation, and is a compound of Formulae I, II, III, IV, VI, VIII, IX, XI, XIA, XIB, XII, XIIA or XIIB as those formulae are defined below: wherein R1 and R2 are each independently selected from the group consisting of halo, hydroxy, nitro, cyano, sulfonyl, optionally substituted alkyl, optionally substituted alkoxy, optionally substituted aminoalkyl, optionally substituted alkylthio, optionally substituted alkylsulfinyl, optionally substituted alkylsulfonyl, optionally substituted aryloxy, optionally substituted aralkyl, optionally substituted alkanoyl, optionally substituted carbocyclic aryl, optionally substituted heteroaromatic or heteroalicyclic; R3 and R4 are the same or different and are selected from the same group as defined for R1 and R2 above, with at least one of R3 and R4 being optionally substituted alkoxy; m and n are each independently an integer of from 0 to 5; o and p are each independently an integer of 0 or greater, wherein the sum of o and p is greater than zero and 8 or less; wherein R1, R2, R3, R4, o and p are each as defined above for Formula I; and m and n are each independently an integer from 0 to 7; wherein R3, R4, o and p are the same as defined in Formula I above; and R5 and R6 are independently optionally substituted alkyl, optionally substituted alkoxy, or optionally substituted alkylthio; wherein R3, R4, o and p are the same as defined in Formula I above; and R5 and R6 are the same as defined in Formula III above; â€ƒwherein R1, R3, R4, p and o are the same as defined in Formula I above; â€ƒm is an integer from 0 to 4; and â€ƒz is an integer from 1 to 6; â€ƒwherein each R3, R4, p and o are the same as defined in Formula I above; â€ƒwherein each R3, R4, p and o are the same or different and are the same as defined in Formula I above; â€ƒwherein R3, R4, p and o are the same as defined in Formula I above; â€ƒR8 is the same as defined for R1 in Formula I above; â€ƒr is an integer of from 0 to 5; and â€ƒeach Alk is the same or different optionally substituted alkyl; or â€ƒeach Alk may be taken together and form a C2-8 alkylene or alkenylene chain and thereby form a ring with the sulfur cation; â€ƒwherein all substituents are as defined in Formula XI above, except that r is an integer from 0 to 7; â€ƒwherein all substituents are as defined in Formula XI above, except that r is an integer from 0 to 9; â€ƒwherein R3, R4, p and o are the same as defined in Formula I above; â€ƒR8 and r are the same as defined in Formula XI above; â€ƒeach Alk is the same or different optionally substituted alkyl; or â€ƒeach Alk may be taken together and form a C2-8 alkylene or alkenylene chain and thereby form a ring with the sulfur cation; â€ƒwherein all substituents are as defined in Formula XII above, except that r is an integer from 0 to 7; â€ƒwherein all substituents are as defined in Formula XII above, except that r is an integer from 0 to 9.