Patent ID: 6451499
Filing Date: 2002-09-17
Classification: C08F,C08G,G03F,Y10S

Abstract:
A photoresist composition comprising a photoacid initiator, an optional dissolution inhibitor, and a polymer polymerized from a polycyclic monomer(s) containing a pendant aromatic substituent in optional combination with a polycyclic monomer(s) containing a pendant acid labile substituent, wherein said aromatic substituent is selected from the group consisting â€”G, â€”(CH2)nG, â€”C(O)O(CH2)nG, â€”C(O)NH(CH2)nG, â€”(CH2)nOG, â€”(CH2)nOC(O)O(CH2)nG, â€”(CH2)nNHC(O)G; n independently represents an integer of 0 to 5; and G is an aromatic group substituted with at least one substituent selected from the group consisting of â€”OR14, R15, and combinations thereof, wherein R14 represents hydrogen, linear and branched (C1 to C10) alkyl, â€”C(O)CH3, tetrahydropyranyl, t-butyl; R15 represents hydrogen, bromine, chlorine, fluorine, iodine, cyano, â€”C(O)O-t-butyl.