Patent ID: 6410209
Filing Date: 2002-06-25
Classification: G03F

Abstract:
A method for forming a photo resist relief image comprising:(a) applying on a substrate a layer of an antireflective composition that comprises an acid or acid generator compound, a crosslinker material, and a resin that comprises a structure of the following formula: where W is a chemical bond, an alkyl linkage, or an ester linkage; each Râ€² is hydrogen, optionally substituted alkyl, optionally substituted alkoxy, ester, optionally substituted alkanoyl, optionally substituted carbocyclic aryl, or optionally substituted aralkyl; m is an integer of from 0 to 5; and each Z is independently a bridge group between polymer units; (b) thermally curing the antireflective composition layer; (c) applying a layer of a photoresist composition over the antireflective composition layer; (d) exposing the photoresist layer to radiation having a wavelength of below about 200 nm and developing the exposed photoresist layer.