Patent ID: 7651586
Filing Date: 2010-01-26
Classification: C23C,H01J

Abstract:
1. A particle removal apparatus for removing particles from a chamber of a plasma processing apparatus, wherein the chamber has an upper electrode and a lower electrode and is connected to a gas exhaust port and a plasma of a processing gas is generated in the chamber to plasma process a substrate to be processed, the particle removal apparatus comprising: a particle charging control member for positively charging particles generated within the chamber by positive ions of an ion sheath region formed in a region other than a vicinity of the substrate to be processed, wherein positively charged particles are discharged from the chamber via the gas exhaust port, the particle charging control member includes a control electrode positioned underneath the upper electrode and between the upper electrode and the lower electrode, the upper electrode has a ground potential, and the control electrode is attached to a substantially entire bottom surface of the upper electrode facing the lower electrode.