Patent ID: 6770423
Filing Date: 2004-08-03
Classification: G03F

Abstract:
A process for producing amplified negative resist structures, which comprises:providing a chemically amplified resist including: a polymer including acid-labile groups, which by action of an acid, are eliminated and liberate anchor groups bringing about a change in a polarity of the polymer, a photoacid generator, and a solvent; applying the chemically amplified resist to a substrate; removing the solvent to provide a photosensitive resist film; obtaining an exposed resist film by sectionally exposing the photosensitive resist film to liberate an acid from the photoacid generator in exposed sections of the photosensitive resist film; contrasting the exposed resist film such that the acid-labile groups of the polymer are eliminated by the acid, which has been liberated, and the anchor groups are liberated in the exposed sections of the photosensitive resist film; after the contrasting, developing the exposed resist film with a developer including: a solvent in which the polymer, when in a state including the acid-labile groups, is soluble and in which the polymer, when in a state after the anchor groups have been liberated, is substantially insoluble or swellable, and a silicon-containing amplifying agent including at least one reactive group that is able to coordinate to the anchor groups of the polymer; and removing excess developer.