Patent ID: 6497783
Filing Date: 2002-12-24
Classification: H01J,H01L

Abstract:
A plasma processing apparatus comprising:a container which can be evacuated; a gas supply means for supplying a gas to the inside of the container; and a microwave supply means for supplying microwaves to generate a plasma in the container, the plasma being utilized to process an article, wherein the microwave supply means is a microwave applicator which is provided with an endless annular waveguide having a planar H-plane with a plurality of slots provided apart from each other and a rectangular cross section perpendicular to the traveling direction of microwaves in the waveguide and which supplies microwaves to the inside of the container through a dielectric window of the container from the plurality of slots provided in the planar H-plane, and wherein the gas supply means is provided below the planar H-plane with a gas emission port that directs the gas to a surface of the planar H-plane, and, wherein a microwave introducing port for the endless annular waveguide is provided in another H-plane, and wherein a means is provided at an introducing section, for distributing the microwaves in two directions parallel to the H-plane and propagating the microwaves in both directions within the annular waveguide.