Patent ID: 8663424
Filing Date: 2014-03-04
Classification: H01J

Abstract:
1. A plasma processing apparatus for performing a plasma process on a processing target substrate, the apparatus comprising: a processing chamber including a bottom and a cylinder-shaped sidewall upwardly extending from a periphery of the bottom and configured to accommodate therein the processing target substrate; a gas supply member provided at a preset position within the processing chamber and provided with a gas supply opening for supplying a plasma processing gas; a plurality of supporting members arranged so as to connect the gas supply member with the sidewall; and a mount formed by a recess in a part of the sidewall and configured to connect each supporting member to the sidewall, wherein the plurality of supporting members include a first supporting member fixed to the mount and a second supporting member movably supported at the mount, a thermal expansion coefficient of the gas supply member is different from a thermal expansion coefficient of the sidewall, the second supporting member includes a rod-shaped member extending straight in a radial direction, and an arc-shaped member installed at an outer end of the rod-shaped member, the mount includes a recess formed in a curved shape to accommodate therein the arc-shaped member, the arc-shaped member is dimensioned about the recess such that a gap exists between an inner surface of the recess and an outer surface of the arc-shaped member and such that the arc-shaped member is movable in substantially all directions within the recess, the first supporting member has a hollow area therein, and a gas is supplied into the gas supply member from the outside of the processing chamber through the hollow area of the first supporting member.