Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
July 6, 2010
Patent Application Number
11653833
Date Filed
January 17, 2007
Patent Primary Examiner
Patent abstract
A pulse voltage is applied on a process gas to generate discharge plasma. The pulse voltage has a duty ratio controlled in a range of 0.001 percent or more and 8.0 percent or less. Preferably, the discharge plasma has an electron density of 1×1010 cm−3 or larger and an electron temperature of 1.5 eV or lower at a supplied power of 1.0 W/cm2 or more per a unit area of a discharge electrode.
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