Patent ID: 6274295
Filing Date: 2001-08-14
Classification: G03F,Y10S

Abstract:
A process for forming an image comprising:a) forming a photoresist film on a substrate;b) providing an antireflective coating solution comprising:(i) choosing a light absorbing compound having a wavelength of maximum absorption higher than an exposure wavelength used to expose the photoresist, and, furthermore, where the exposure wavelength is within the region of the light absorbing compound defined by .lambda..sub.max and .lambda..sub.2-,(ii) forming an antireflective coating solution comprising the light absorbing compound and a solvent;c) forming a coating of the antireflective coating solution on the photoresist film;d) imagewise exposing the photoresist film coated with the antireflective coating solution;e) developing to form an image; and,f) optionally baking the substrate before or after the developing step.