Patent ID: 6692883
Filing Date: 2004-02-17
Classification: G03F,Y10S

Abstract:
A positive photoresist composition comprising:(a) a resin (A) having a structural unit containing a group represented by the following formula (X) and capable of decomposing under the action of an acid to increase the solubility in an alkali developer, a resin (B) having a structural unit containing a group represented by the following formula (Y) and capable of decomposing under the action of an acid to increase the solubility in an alkali developer, and (b) a compound capable of generating an acid upon irradiation with actinic rays or radiation: wherein R1 and R2, which may be the same or different, each represents a hydrogen atom, a linear, branched or cyclic alkyl group which may have a substituent, m represents an integer of 1 to 20, Z represents wherein R3 represents a linear, branched or cyclic alkyl group which may have a substituent, an aryl group which may have a substituent, or an aralkyl group which may have a substituent, and n represents an integer of 0 to 5; wherein R4 represents a lower alkyl group having from 1 to 4 carbon atoms.