Patent ID: 7790356

Claim:
An anti-reflective coating forming composition comprising: a polymer having a structure of formula (1): wherein A 1 , A 2 , A 3 , A 4 , A 5 and A 6 independently of one another are hydrogen atom, methyl or ethyl, X 1 is a group of formula (2), (3), (4) or (5): wherein R 1 and R 2 independently of each other are hydrogen atom, C 1-6 alkyl, C 3-6 alkenyl, benzyl or phenyl, and the phenyl may be substituted by a substituent selected from the group consisting of C 1-6 alkyl, halogen atom, C 1-6 alkoxy, nitro, cyano, hydroxy and C 1-6 alkylthio, or R 1 and R 2 together may form C 3-6 ring, R 3 is C 1-6 alkyl, C 3-6 alkenyl, benzyl or phenyl, and the phenyl may be substituted by a substituent selected from the group consisting of C 1-6 alkyl, halogen atom, C 1-6 alkoxy, nitro, cyano, hydroxy and C 1-6 alkylthio, Q is a group of formula (6) or (7): wherein Q 1 is C 1-10 alkylene, phenylene, naphthylene or anthrylene, and the phenylene, naphthylene and anthrylene may be substituted by a substituent selected from the group consisting of C 1-6 alkyl, halogen atom, C 1-6 alkoxy, nitro, cyano, hydroxy and C 1-6 alkylthio, n 1 and n 2 independently of each other are a number of 0 or 1, X 2 is a group of formula (2), (3) or (5), an acid compound or an acid generator, and a solvent, wherein the polymer having the structure of formula (1) is: a polymer produced by a reaction of a compound of formula (8) with a compound of formula (9) wherein A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , X 1 and Q are as defined above, or a polymer produced by a reaction of a compound of formula (10) with a compound of formula (11) wherein A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , X 1 and Q are as defined above.