Patent ID: 7425347

Claim:
A composition for forming anti-reflective coating for use in a lithography process in the manufacture of a semiconductor device, comprising a polymer (A) being a halogenated bisphenol A resin having a weight average molecular weight of 700 to 5,000, and a polymer (B) comprising a crosslink-forming functional group and having a weight average molecular weight of 20,000 or more; wherein the halogenated bisphenol A resin comprises at least a polymer of formula (1): wherein X 1 is a halogen atom, n1 is the number of repeated units and an integer of 1 to 50, n2 and n3 is the number of substituent X 1 on a benzene ring and an integer of 1 to 3, and Y is a group of formula (2) wherein T 1 is a divalent linking group, P is a (n4+1) valent aromatic ring group having 6 to 14 carbon atoms, M is an electron-donating group, n4 is the number of substituent M on P and an integer of 0 to 3, in a case where n4 is 2 or 3, substituents M are the same or different from each other.