Patent ID: 6054248
Filing Date: 2000-04-25
Classification: G03F,Y10S

Abstract:
A photolithographic sensitive coated substrate suitable for imagewise exposure by deep UV radiation, said coated substrate comprising:(a) a substrate;(b) a thermally cured undercoat on the substrate, said thermally cured undercoat being a thermally cured polymer composition of a hydroxyl-containing polymer and a polyfunctional isocyanite cross-linking agent, wherein the hydroxyl-containing polymer comprises at least one monomer selected from the group consisting of: a hydroxyalkyl (meth)acrylate, a hydroxycycloalkyl (meth)acrylate, a hydroxyalkylcycloalkyl (meth)acrylate, and allyl alcohol, said thermally cured undercoat having been cured at a temperature within the range of above about 50.degree. C. to less than about 250.degree. C. for a time less than about 3 minutes;(c) a deep UV radiation-sensitive photoresist topcoat on said thermally cured undercoat, said radiation-sensitive topcoat comprising a topcoat of a photoresist composition comprising a chemically amplified deep UV photosensitive polymer containing acid-labile groups and a photoacid generating compound generating acid upon exposure to deep UV radiation.