Patent ID: 6132550
Filing Date: 2000-10-17
Classification: C23C,H01J

Abstract:
A processing apparatus in which an electromagnetic wave is guided into a reaction chamber through an entrance window to create a plasma from a gas in said reaction chamber for deposition or etching, said apparatus comprising:a vacuum reaction chamber;a means for introducing gases into said reaction chamber;a means for evacuating gases from said reaction chamber;a means for guiding the electromagnetic wave into said reaction chamber; anda conductance regulating element disposed within said reaction chamber and partitioning said reaction chamber into two regions, said two regions including a reaction region in which a substrate is placed on a substrate holding means, and an intermediate region between said reaction region and said entrance window,wherein said means for introducing gases is connected to said intermediate region, and said means for evacuating gases is connected into said reaction region,said conductance regulating element regulating gas flow from said intermediate region to said reaction region such that gas pressure in said intermediate region is higher than in said reaction region and gases in said intermediate region are not excitable by the electromagnetic wave guided into said reaction chamber.