Patent ID: 8075733
Filing Date: 2011-12-13
Classification: H01J

Abstract:
1. A plasma processing apparatus comprising: a decompression chamber of which the inside is decompressed; a gas supply unit that supplies process gas into the decompression chamber; a microwave supply unit that supplies a microwave into the decompression chamber to generate plasma; at least one coil forming a magnetic field in the decompression chamber; an object-placing electrode where a processing material, which is an object to be processed, is placed and which holds the processing material in the decompression chamber; and a vacuuming unit that is connected to the decompression chamber to discharge the gas in the decompression chamber; wherein the decompression chamber, a part for providing gas into the chamber of the gas supply unit, a part for introducing a microwave into the chamber of the microwave supply unit, the at least one coil, the object-placing electrode, and the vacuuming unit are disposed coaxially with a center axis of the decompression chamber; wherein the part for introducing a microwave includes a microwave rotation generator provided with a rectangular dielectric plate and a cylindrical dielectric plate guide having axially-symmetric opposing grooves therein for receiving and supporting the rectangular dielectric plate, the microwave rotation generator having a cross-sectional dimension enabling only the microwave of TE wherein a polarization plane of the input microwave is rotated right or left, thereby, the microwave of the TE