Patent ID: 6998215

Claim:
A process for producing amplified negative resist structures, which comprises: applying a chemically amplified resist to a substrate, the resist including: a polymer having a polarity and containing an acid-labile group and a bound anchor group, the acid-labile group being eliminable by acid and being able to liberate the anchor group to change the polarity of the polymer; a photoacid generator; and a first solvent; removing the solvent to yield a photosensitive resist film; exposing sections of the photosensitive resist film to generate an acid from the photoacid generator in the exposed sections of the resist film; contrasting the exposed resist film by eliminating the acid-labile group of the polymer with the acid and liberating the anchor group in the exposed sections of the resist film to change the polarity of the polymer; developing the exposed and contrasted resist film with a developer, the developer including: a second solvent for dissolving the polymer containing acid-labile groups, and not dissolving and swelling the polymer containing the liberated anchor groups; an amplifying agent having a reactive group for coordinating the anchor groups of the polymer, and a polycyclic non-aromatic group; and removing excess of the developer, thus producing an amplified negative resist structure on the substrate.