Patent ID: 6939662
Filing Date: 2005-09-06
Classification: G03F,Y10S

Abstract:
1. A positive-working resist composition comprising: (A2) a resin containing a repeating unit represented by the following formula (Ia), and at least one selected from the group consisting of repeating units represented by the following formulae (II) to (IV), which increases the solubility in an alkali developing solution by the action of an acid, and (B) a compound capable of generating an acid upon irradiation with one of actinic rays and radiation: wherein Ra, Rb and Rc each independently represents a hydrogen atom, a fluorine atom or a fluoroalkyl group, L R X represents a hydrogen atom or a group capable of decomposing by the action of an acid, n represents 0 or 1, Q represents a hydrogen atom or a hydroxyl group: wherein R X m represents 0 or 1: wherein R m represents 0 or 1: wherein R1a represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, a cyano group or a trifluoromethyl group, R41 to R X na' represents an integer of from 1 to 5, with the proviso that when n is 2 or greater, the two or more R