Patent ID: 9196460
Filing Date: 2015-11-24
Classification: H01J

Abstract:
1. A plasma processing apparatus comprising: a processing container which is formed of metal and receives a substrate that is plasma-processed; an electromagnetic wave source which supplies electromagnetic waves required to excite the plasma inside of the processing container; one, two, or more dielectric plates which are disposed on a lower surface of a lid of the processing container, are partially exposed to inside of the processing container, and transmit the electromagnetic wave supplied from the electromagnetic wave source to inside of the processing container; and a metal electrode that is provided on a lower surface of the dielectric plate; wherein the electromagnetic wave transmitted from the dielectric plates is propagated along a metal surface exposed to inside of the processing container, the metal surface comprising a lower surface of the metal electrode and a lower surface of the lid where the dielectric plate is not disposed, wherein the plasma processing apparatus further comprises: a gas supply source which supplies a desired gas; a first gas discharging unit which discharge the gas supplied from the gas supply source to inside of the processing container; and a gas flow passage which introduce the gas supplied from the gas supply source to the first gas discharging unit.