Patent ID: 7767055
Filing Date: 2010-08-03
Classification: H01J

Abstract:
1. A capacitive coupling plasma processing apparatus comprising: a process chamber configured to have a vacuum atmosphere; a process gas supply section configured to supply a process gas into the chamber; a first electrode disposed in the chamber; a second electrode disposed opposite the first electrode in the chamber; an RF power supply configured to supply an RF power to the first or second electrode to form an RF electric field within a plasma generation region between the first and second electrodes, so as to turn the process gas into plasma by the RF electric field; and a support member configured to support a target substrate between the first and second electrodes such that a process target surface of the target substrate faces the second electrode; wherein the plasma generation region and a surrounding region around the plasma generation region inside the chamber are contained by a chamber inner surface comprising a component surface that is conductive and grounded, a functional surface that is conductive and grounded is disposed in the surrounding region to expand the plasma outside the plasma generation region, and the functional surface is covered with a first insulator while the component surface is covered with a second insulator, and the first and second insulators differ from each other such that the functional surface is coupled with the plasma in a sense of DC (direct current) while the component surface is not coupled with the plasma in a sense of DC.