Patent ID: 7833696

Claim:
A method of forming an antireflective coating on an electronic device comprising (A) applying to an electronic device an ARC composition comprising (i) a silsesquioxane resin having the formula (PhSiO (3-x)/2 (OH) x ) m HSiO (3-x)/2 (OH) x ) n (MeSiO (3-x)/2 (OH) x ) p (RSiO (3-x)/2 (OH) x ) q where Ph is a phenyl group, Me is a methyl group, R is selected from ester groups and polyether groups, x has a value of 0, 1 or 2; m has a value of 0.05 to 0.95, n has a value of 0.05 to 0.95, p has a value of 0.05 to 0.95, q has a value of 0.01 to 0.50 and m+n+p+q≈1; and (ii) a solvent; and (B) removing the solvent and curing the silsesquioxane resin to form an antireflective coating on the electronic device.