Patent ID: 6077585
Filing Date: 2000-06-20
Classification: G11B,Y10S

Abstract:
An optical recording medium comprising:a first transparent support;a first composite dielectric layer formed on the transparent support;an optical recording layer formed on the first composite dielectric layer;a second composite dielectric layer formed on the optical recording layer so that the first transparent support, first composite dielectric layer, optical recording layer and second composite dielectric layer form an optical transmission substrate;a second transparent support; andan adhesive provided adjacent the second composite dielectric layer of the optical transmission substrate and the second transparent support to adhere the optical transmission substrate to the second transparent support;wherein the composite dielectric layers are formed of x mol % of aluminum nitride and (100-x) mol % of silicon nitride such that x is greater than 0 and less than or equal to about 95 mol % and the refractive index of the composite dielectric layer is between 1.70 and 2.15.