Patent ID: 7491049
Filing Date: 2009-02-17
Classification: B29C,B82Y,G03F

Abstract:
1. An apparatus for hot embossing lithography, comprising: a substrate structured and arranged for holding a polymer thin film to be pressed; a press mold capable of being in alignment with the polymer thin film, the press mold comprising a main body and a plurality of relief structures extending from the main body, each relief structure having a pressing surface facing away from the main body, a side surface adjacent to the main body, and at least one planar chamfer, each chamfer having two opposite edges adjoining the pressing surface and the side surface respectively, the chamfers being configured for facilitating separation and removal of the press mold from the polymer thin film without significant chance to the configuration of the mess mold; a first heating device adapted for heating the press mold; a second heating device adapted for heating the polymer thin film on the substrate; and a vacuum chamber having an opening configured for introducing a vapor flow thereinto thereby moistening the pressing surfaces of the relief structures to lower a surface adsorption energy of the pressing surfaces, the press mold and the substrate being accommodated in the vacuum chamber.