Patent ID: 6335143
Filing Date: 2002-01-01
Classification: G03F

Abstract:
A negative working resist composition comprising(a) an aliphatic alkali-soluble polymer, (b) a compound represented by the formula: A1â€”T1â€”R1â€”T2â€”A2â€ƒâ€ƒ[1]wherein R1 is a divalent aliphatic hydrocarbon residue which may contain at least one of â€”Oâ€”, â€”COâ€”, â€”COOâ€” and â€”OCOâ€”; A1 and A2 are independently an alkyl group containing one or more oxirane rings; and T1 and T2 are independently, â€”Oâ€”, â€”COOâ€” or â€”OCOâ€”, wherein R2 is a trivalent aliphatic hydrocarbon residue which may contain at least one of â€”Oâ€”, â€”COâ€”, â€”COOâ€” and â€”OCOâ€”; A1 to A3 are independently an alkyl group containing one or more oxirane rings; and T1 to T3 are independently, â€”Oâ€”, â€”COOâ€” or â€”OCOâ€”, or wherein R3 is a tetravalent aliphatic hydrocarbon residue which may contain at least one of â€”Oâ€”, â€”COâ€”, â€”COOâ€” and â€”OCOâ€”; A1 to A4 are independently an alkyl group containing one or more oxirane rings; and T1 to T4 are independently, â€”Oâ€”, â€”COOâ€” or â€”OCOâ€”,(c) a photo-sensitive compound which generates an acid upon exposure to light, and (d) a solvent capable of dissolving the above components (a) to (c).