Patent ID: 6872511
Filing Date: 2005-03-29
Classification: G11B,Y10S

Abstract:
1. A method for forming micropatterns, comprising the steps of: irradiating a thin film formed on a substrate with an energy beam to elevate the temperature of an interface between the thin film and the substrate to a predetermined temperature or higher and thereby form a mixture region of the thin film and the substrate at the interface; and patterning at least the thin film in such a manner to leave over the mixture region, wherein the thin film is formed of a metallic film, a mixed film is formed of the metallic film and the substrate at an interface between the metallic film and the substrate whose temperature is elevated to the predetermined temperature or higher by irradiation with the energy beam, only the metallic film is selectively removed, and a region of the substrate having no mixed film formed thereon is etched by a predetermined amount so that the mixed film and the underlying substrate are left over.