Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
September 28, 2010
Patent Application Number
11590793
Date Filed
November 1, 2006
Patent Primary Examiner
Patent abstract
A phase change optical disk includes a first dielectric film, a recording film, a second dielectric film and a reflecting film which are consecutively formed on a substrate. The second dielectric film includes therein a zinc sulfide at a rate of 10 to 40 mol % and a tantalum oxide at a rate of 20 to 50 mol %, for preventing sulfuration of Ag in the reflecting film.
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