Patent ID: 8034213
Filing Date: 2011-10-11
Classification: H01J

Abstract:
1. A plasma processing apparatus comprising: a processing vessel capable of being vacuum evacuated; a first electrode disposed in the processing vessel to be in a state electrically isolated from the processing vessel via an insulating member or a space; a second electrode, arranged in the processing vessel to face and be in parallel to the first electrode with a specific interval, for supporting a substrate to be processed; a processing gas supply unit for supplying a desired processing gas into a processing space surrounded by the first electrode, the second electrode and a sidewall of the processing vessel; and a first radio frequency power supply unit for applying a first radio frequency power to the second electrode to generate a plasma of the processing gas in the processing space, wherein an electrostatic capacitance between the first electrode and the processing vessel is set such that a desired plasma density distribution is obtained for the plasma generated in the processing space, wherein a vacuum space separated from the processing space is formed between the processing vessel and a rear surface of the first electrode when viewed from the second electrode, wherein the vacuum space includes a ceiling portion that faces the rear surface of the first electrode, wherein a first insulator is disposed in the vacuum space to cover at least the ceiling portion of the vacuum space.