Patent ID: 6242162
Filing Date: 2001-06-05
Classification: G11B,Y10S

Abstract:
A method of manufacturing a master disk for forming an optical disk, comprising;(a) forming an SiO.sub.2 film on a substrate;(b) coating a first photoresist layer on the SiO.sub.2 film;(c) exposing the first photoresist layer according to patterns of a groove formation recess and a land formation protrusion corresponding to a groove and a land, respectively;(d) etching the first photoresist layer and then the SiO.sub.2 film through openings in the exposed first photoresist layer, to form the groove formation recess and the land formation protrusion in the SiO.sub.2, film;(e) conformal coating a second photoresist layer of a uniform thickness on the SiO.sub.2, film, to form the groove and the land at positions corresponding to the groove formation recess and the land formation protrusion, respectively;(f) exposing the second photoresist layer according to patterns to a pit where predetermined information is recorded; and(g) etching the second photoresist layer, to form the pits in the groove and the land.