Patent ID: 11062884

Abstract:
The present invention provides a plasma processing apparatus and a plasma processing method which improve the uniformity and accordingly the yield in an etching treatment of a sample. In the plasma processing apparatus or the plasma processing method for treating a wafer placed on an upper surface of a sample table disposed in a treatment chamber in a vacuum container by using plasma generated in the treatment chamber, inductance of the coil is adjusted according to magnitude of an phase difference of the high frequency power flowing through the power supply path such that the voltage of the high frequency power becomes a maximum value or a minimum value, in which the coil is in a connection path that electrically connects, via the coil, positions between each electrode and each matching box on a plurality of power supply paths that electrically connect a plurality of electrodes and a plurality of electrodes high frequency power sources which supply high frequency power to the plurality of electrodes disposed at a center part and an area on an outer peripheral side of the center part in the sample table.