Back to results
US 2003/0215598 A1Published application
Metal alloys for the reflective or the semi-reflective layer of an optical storage medium
OwnerHan H. Neeinventor
Life of this patent
Estimating the term…
Abstract
A silver-based alloy thin film is provided for the highly reflective or semi-reflective layer of optical discs. Alloy additions to silver include gold, rhodium, rethenium, osmium, platinum, plalladium, copper, silicon, cadmium, tin, lithium, nickel, cobalt, indium, chromium, antimony, gallium, boron, molybdenum, zirconium, beryllium, titanium, magnesium, and zinc. These alloys have moderate to high reflective and reasonable corrosion resistance in the ambient environment.
Claims30
An optical storage medium, comprising:
- a first layer having a pattern of features in at least one major surface;
- and
- a first coating adjacent the first layer, said first coating includes a first metal alloy;
- wherein the first metal alloy comprises:
- silver;
- and
- at least one other element, selected from the group consisting of copper, silicon, cadmium, tin, lithium, nickel, cobalt, indium, chromium, antimony, gallium, boron, molybdenum, zirconium, beryllium, titanium and magnesium, wherein said other elements are present from 0.01 a/o percent to 10.0 a/o percent of the amount of silver present.
4 more elements
An optical information recording medium, comprising:
- a first substrate having a pattern of features in at least one major surface;
- a first recording layer adjacent the feature pattern;
- and
- a first reflective layer adjacent to the first recording layer, said reflective layer including a first metal alloy;
- wherein the first metal alloy comprises:
- silver;
- and
- at least one other element selected from the group consisting of copper, zinc, titanium, cadmium, lithium, nickel, cobalt, indium, aluminum, germanium, chromium, germanium, tin, beryllium, magnesium, manganese, antimony, gallium, silicon, boron, zirconium, molybdenum and mixtures thereof, wherein said other elements are present from 0.01 a/o percent to 10.0 a/o percent of the amount of silver present.
5 more elements
An optical storage medium, comprising:
- a first substrate having a pattern of features in at least one major surface;
- a semi-reflective layer adjacent said feature pattern, said semi-reflective layer including a metal alloy;
- said metal alloy comprising:
- silver;
- and
- copper;
- wherein the relationship between the amounts of silver and copper is defined by AgxCuy where 0.90<x<0.999, 0.001<y<0.10;
- a second substrate having a pattern of features in at least one major surface;
- a high reflective layer adjacent the feature pattern of said second substrate;
- and
- at least one spacer layer, located between said first and second substrates.
8 more elements
Dependencies are inferred from the claim text.