Patent ID: 6847003
Filing Date: 2005-01-25
Classification: H01J

Abstract:
1. A plasma processing apparatus comprising: a processing container in form of a cylinder with a bottom; a supporting unit disposed in the processing container to support an object to be processed; a dielectric window arranged in an opening of the processing container to close up the processing container in an air-tight manner, the dielectric window being made of dielectric allowing a high-frequency wave to permeate the dielectric window into an interior of the processing container; an annular waveguide shaped in form of a ring to introduce the high-frequency wave into the processing container through the dielectric window and also fitted to the dielectric window so that a plane containing an annular waveguide path of the annular waveguide extends along the dielectric window; and a traveling-wave generator associated with the annular waveguide, the traveling-wave generator being configured to produce a traveling wave in a form of an endless ring in the annular waveguide, the traveling-wave generator including: