Patent ID: 6159664
Filing Date: 2000-12-12
Classification: G03F,G11B,Y10S

Abstract:
A method of manufacturing a matrix, said method comprising:applying a negatively acting photoresist material to a matrix plate and thereafter drying the photoresist material to form a photoresist film;selectively exposing the photoresist film to laser light to create unexposed portions and exposed portions of the photoresist film; anddeveloping the photoresist film to remove the unexposed portions from surface portions of the matrix plate and to provide a structured photoresist film defined by the exposed portions,wherein the structured photoresist film and the matrix plate collectively define a matrix comprising posts provided by the exposed portions of the photoresist film and lands provided by the surface portions of the matrix plate from which the unexposed portions have been removed, the posts and lands of the matrix being arranged so that molding of optical disc storage media against the matrix causes the posts and lands of the matrix to respectively form complementary pits and lands in the optical disc storage media, the complementary pits and lands of the optical disc storage media representing stored data.