Patent ID: 7527706
Filing Date: 2009-05-05
Classification: H01J,H01L

Abstract:
1. A plasma processing apparatus applying plasma processing to a semiconductor substrate, comprising: a process vessel housing the semiconductor substrate to be processed; an electromagnetic wave supply part supplying an electromagnetic wave for generating plasma in a process space of said process vessel; a dielectric plate closing an opening formed in an upper portion of said process vessel; a support part on an inner wall side of the process vessel protruding into an inner side of the process vessel to support an outer peripheral portion of said dielectric plate on an upper face of said support part; a sealing material disposed between said dielectric plate and said support part, wherein the sealing part is located in a first groove formed in the support part; and a resin layer interposed in an area on an inner side of the sealing material or in an area on an outer side of the sealing material, and between said dielectric plate and said support part, wherein an area in which the upper face of said support part on an outer side of the sealing material and the dielectric plate face each other, and an area in which the inner side of the process vessel and the outer peripheral portion of the dielectric plate face each other, are contacted through said resin layer, wherein a second groove for absorbing thermal expansion is formed in the support part in an area having the resin layer, the groove being disposed in a corner portion between a side face of the support part and a base portion of the support part, or in an area of the side face of the support part being immediately adjacent to said corner portion or in an area of the base portion of the support part being immediately adjacent to said corner portion.