Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
October 26, 2010
Patent Application Number
12186979
Date Filed
August 6, 2008
Patent Primary Examiner
Patent abstract
A semiconductor device includes an optical semiconductor element, a package including a base made of a metal for mounting the optical semiconductor element, and a cap for encapsulating the optical semiconductor element and a gas by covering the package and the optical semiconductor element. The gas encapsulated with the package has an oxygen concentration not less than 15% and less than 30% and has a dew-point not less than −15° C. and not more than −5° C.
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