Patent ID: 6080530
Filing Date: 2000-06-27
Classification: C09D,G03F,Y10S

Abstract:
In a method for manufacturing multilayer resist structures for microlithographic processing, the improvement comprising coating an effective anti-reflective coating layer onto a semiconductor substrate, said anti-reflective coating, comprising a hydroxyl-functional, highly aliphatic condensation polymerized polyester resin, an alkylated aminoplast crosslinking agent, and a protonic acid curing catalyst dissolved in a low-to-medium boiling alcohol-containing solvent system, baking at from about 120.degree. C. to 225.degree. C. for 30 to 120 seconds, overcoating a novolac- or poly(hydroxystyrene)-based photoresist layer, and baking said photoresist layer, whereby the anti-reflective coating provides higher plasma etch selectivity to the photoresist than anti-reflective coatings in which the connecting structure of the hydroxyl-functional resin is highly aromatic.