Patent ID: 7071442
Filing Date: 2006-07-04
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 high-frequency wave generator for supplying a high-frequency wave; a propagation waveguide having a first end and a second end, the first end being connected to the high-frequency wave generator; a circularly-polarized wave converter arranged between the first end and the second end of the propagation waveguide to rotate the high-frequency wave propagated in the propagation waveguide about an axis of the propagation waveguide; a plurality of branched waveguides connected to the second end of the propagation waveguide; and an annular waveguide to which the branched waveguides are connected at different angular positions about the axis of the propagation waveguide, the annular waveguide having a plurality of slots, through each of which a high-frequency traveling wave traveling circumferentially in the annular waveguide is supplied to the processing chamber.