Patent ID: 7754414
Filing Date: 2010-07-13
Classification: G03F

Abstract:
1. A method for reducing outgassing from an antireflective coating film comprising applying to a substrate an antireflective coating composition comprising (a) a polymer comprising one or more functional groups capable of one or more interactions selected from the group consisting of covalent bonding, ionic bonding, and hydrogen bonding; and (b) a thermal acid generator which upon heating disassociates into constituent parts that are capable of one or more interactions selected from the group consisting of covalent bonding, ionic bonding, and hydrogen bonding; and heating the antireflective coating composition to form the antireflective coating film on the substrate, the constituent parts of the thermal acid generator becoming bound to the functional groups of the polymer through the interactions, reducing outgassing from the antireflective coating film, where the polymer comprises a hydroxyl group and a chromophore group, and the thermal acid generator is selected from the group consisting of 1,4-Diazobicyclo[2,2,2]octane ammonium 2-mesitylenesulfonate, 1,4-Diazobicyclo[2,2,2]octane ammonium bis (2-mesitylenesulfonate), 4,5-Dimethoxy-2-nitrobenzyl ester of 2-mesitylenesulfonic acid and 4,5-Dimethoxy-2-nitrobenzyl ester of 4-acetylbenzenesulfonic acid.