Patent ID: 6063549
Filing Date: 2000-05-16
Classification: G03F

Abstract:
A process for the treatment of a substrate, which comprises at least the following process steps:(1) coating the substrate with a photoresist composition;(2) selective irradiation of this photoresist coating at approximately 193 mm wavelength;(3) treatment of the irradiated coating with a developer solution, whereby the resist coating is structured as an image; and(4) the image-structured resist coating is subjected to a treatment, in which its imaged structure is not disturbed, and in which non-aromatic groups are converted to groups with aromatic structural elements; and wherein the photoresist composition comprises:(A) a compound which forms an acid under the effect of radiation;(B) a film-forming binding agent that is sufficiently transparent for radiation of approximately 193 mm wavelength, and which has groups that can be cleaved by acid catalysis; and(C) a compound with latent aromatic groups; or instead of components (B) and (C):(D) an alkali-soluble film-forming binding agent, which is sufficiently transparent for radiation of approximately 193 mm wavelength to provide a photoresist having an extinction value of at most 0.8/.mu.m in a solvent free state and which has both latent aromatic groups and groups that can be cleaved by acid.