Patent ID: 8133325
Filing Date: 2012-03-13
Classification: H01J,Y10S

Abstract:
1. A dry cleaning method for a plasma processing apparatus having: a vacuum container provided with a dielectric member; a planar electrode and an antenna that are provided outside the dielectric member; and a power source that supplies power to both the antenna and the planar electrode, to thereby introduce power into the vacuum container via the dielectric member and produce an inductively-coupled plasma, the method consisting the steps of: introducing a gas consisting of fluorine having a flow rate of not less than 20 sccm and not more than 100 sccm into the vacuum container and also introducing power into the vacuum container from the power source, to thereby produce an inductively-coupled plasma in the gas consisting of fluorine having a pressure of not less than 0.3 Pa and not more than 5 Pa; and by use of the inductively-coupled plasma, removing a product including at least one of a precious metal and a ferroelectric that is adhered to the dielectric member.