Patent ID: 7838615

Claim:
An anti-reflective coating composition comprising (A) a siloxane resin having the formula (HSiO 3/2 ) a (RSiO 3/2 ) b (SiO 4/2 ) c where R is Z, Z(CH 2 ) n or ZO(CH 2 ) n where Z is a phenyl or substituted phenyl group; n has a value of 1 to 6, a has value of 0.01 to 0.7, b has a value of 0.05 to 0.7, c has a value of 0.1 to 0.9 and a+b +c≈1; and (B) a solvent selected from 1-methoxy-2-propanol; propylene methyl ether acetate and cyclohexanone.