Patent ID: 8267041
Filing Date: 2012-09-18
Classification: H01J

Abstract:
1. A plasma treating apparatus adapted to provide a predetermined plasma treatment to an object to be treated, comprising: a processing chamber capable of being vacuumed; an object holding means adapted to hold an object; a high frequency power source adapted to generate high frequency voltage; a plasma gas supplying means adapted to supply a plasma generating gas to be treated to generate plasma to the processing chamber; a first plasma electrode and a second plasma electrode providing a pair of plasma electrodes disposed to apply high frequency voltage to plasma generating gas supplied from the plasma gas supplying means and thereby generate plasma in the processing chamber, and connected to the output side of the high frequency power source; a high frequency matching means, provided between the pair of plasma electrodes and the high frequency power source to connect the electrodes and the power source such that none of the high frequency matching means and the electrodes are grounded and each electrode is brought into an excited electrode state in a high frequency manner, for impedance matching based upon a load acting on the high frequency power source as a result of plasma generated in the processing chamber by the plasma electrodes, said load being detectable as a reflected wave at the plasma electrodes, the high frequency matching means including: