Patent ID: 6165697
Filing Date: 2000-12-26
Classification: G03F

Abstract:
A method for treating a substrate comprising:(a) applying a layer of an antihalation composition on the substrate, the antihalation composition comprising an alkali soluble thermoplastic phenolic resin binder selected from the group consisting of novolak resins and polyvinyl phenols in an amount of from 50 to 90 weight percent of the composition on a dry solids basis and a thermal crosslinker compound in an amount sufficient to crosslink the composition;(b) in the absence of a photoimaging step, at least partially thermally crosslinking the antihalation composition layer;(c) applying a layer of a photoresist composition over the antihalation composition, the photoresist composition comprising an alkali soluble thermoplastic phenolic resin binder selected from the group consisting essentially of novolak resins and polyvinyl phenols in an amount sufficient to form a film and a radiation sensitive component in an amount sufficient to enable development of the photoresist following exposure to activating radiation;(d) exposing the photoresist composition to patterned activation radiation;(e) baking the exposed photoresist layer to cause a crosslinking reaction between the photoresist and antihalation layers;(f) developing the baked, exposed photoresist layer; and(g) in the absence of a photoimaging step, removing the bared antihilation layer; and(h) altering the underlying substrate.