Patent ID: 8104428
Filing Date: 2012-01-31
Classification: C23C,H01J

Abstract:
1. A plasma processing apparatus comprising: a substrate processing chamber having therein a processing space in which plasma processing is carried out on a substrate; an RF electrode that applies radio frequency electrical power into said processing space; a DC electrode that applies a DC voltage into said processing space; a grounding electrode, at least part of which is exposed in said substrate processing chamber; a mounting stage on a top of which the substrate is mounted; and an exhaust plate disposed in an exhaust flow path formed between an inner wall of said substrate processing chamber and a side face of the mounting stage, wherein said grounding electrode is disposed in a corner portion formed through an intersection of the side face of said mounting stage and said exhaust plate so as to be contained within a space defined by distances of within 5 mm from a position where the side face of said mounting stage and said exhaust plate intersect, wherein said grounding electrode is comprised of a conductive body exposed directly to said processing space, wherein said grounding electrode is comprised of a member other than said exhaust plate, a wall portion of said substrate processing chamber and said mounting stage, and wherein the exhaust plate is fixed within the plasma processing apparatus.