Patent ID: 7335278
Filing Date: 2008-02-26
Classification: H01J,H01L,Y10S

Abstract:
1. A plasma processing apparatus that performs plasma processing on a semiconductor wafer placed on an electrode provided inside a processing chamber, comprising: an electrically conductive ring body encompassing the periphery of said semiconductor wafer placed on said electrode; an electrically insulating ring body encompassing the periphery of said electrically conductive ring body; a thermal conductivity adjusting member, for adjusting a thermal conductivity between the electrode and the electrically conductive ring body, provided between said electrode and said electrically conductive ring body, attached to said electrically conductive ring body, made of aluminum, and forming an Al a means for pressure application for applying a pressure through the thermal conductive adjusting member to raise the thermal conductivity between said electrode and said electrically conductive ring body and is capable of adjusting the level of the pressure, wherein the means for pressure application is not exposed to the space of performing said plasma processing.