Patent ID: 6517991
Filing Date: 2003-02-11
Classification: G03F,Y10S

Abstract:
A positive photosensitive composition comprising (A) a compound which generates an acid upon irradiation with an actinic ray or radiation; (B) a resin having at least one monovalent polyalicyclic group represented by the following formula (Ib) and a group which is decomposed by the action of an acid to increase solubility in an alkaline developing solution; (C) propylene glycol monomethyl ether acetate as a solvent and component of the positive photosensitive composition; and (D) a nitrogen-containing basic compound having a structure represented by the following formula (A) or a nitrogen-containing basic compound containing a structure of formula (B), (C), (D) or (E): wherein Ra, Rb, Rc, Rd, Re, Rf and Rg, which may be the same or different, each represents an optionally substituted alkyl, cycloalkyl, alkenyl or alkynyl group, a halogen atom, a cyano group, â€”R6bâ€”Oâ€”R7b, â€”R8bâ€”COâ€”Oâ€”R9b, â€”R10bâ€”COâ€”NR11bR12b or â€”R13bâ€”Oâ€”COâ€”R14b; R7b and R9b, which may be the same or different, each represents a hydrogen atom, an optionally substituted alkyl, cycloalkyl or alkenyl group or a group which is decomposed by the action of an acid to increase solubility in an alkaline developing solution; R11b, R12b and R14b, which may be the same or different, each represents a hydrogen atom, an optionally substituted alkyl, cycloalkyl or alkenyl group, or R11b, and R12b may be bonded to each other to form a ring; R6b, R8b, R10b and R13b, which may be the same or different, each represents a single bond, an optionally substituted alkylene, alkenylene or cycloalkylene group; two of Ra to Rg, which are present on the same carbon atom, may represent in combination a carbonyl group (&boxH;O) or a thiocarbonyl group (&boxH;S); two of Ra to Rg, which are bonded to adjacent carbon atoms, may be bonded to each other to form a double bond between these two carbon atoms, at least two of Ra to Rg may be bonded to each other to form a ring; and the monovalent polyalicyclic group represented by formula (Ib) may be connected to the resin moiety in any position thereof; wherein R250, R251 and R252, which may be the same or different, each represents a hydrogen atom, an alkyl group having from 1 to 6 carbon atoms, an aminoalkyl group having from 1 to 6 carbon atoms, a hydroxyalkyl group having from 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having from 6 to 20 carbon atoms, and R251 and R252 may be bonded to each other to form a ring; wherein R253, R254, R255 and R256, which may be the same or different, each represents an alkyl group having from 1 to 6 carbon atoms.