Patent ID: 8231759

Claim:
A plasma processing apparatus comprising: a processing chamber for subjecting an object to plasma processing; means for introducing a gas for plasma processing into the processing chamber; means for evacuating an interior of the processing chamber; a sample stage for mounting of the object; a radio-frequency power supply which enables generation of plasma in the processing chamber; and at least one induction coil connected to the radio-frequency power supply; wherein the induction coil is formed by connecting a plurality of identical coil elements in a parallel circuit-like arrangement so that a same radio-frequency voltage is applied to each of the plurality of identical coil elements; wherein each input terminals of the identical coil elements is displaced at intervals of an angle calculated by dividing 360° by the number of identical coil elements; and wherein continuous conductor portions of the identical coil elements are formed on different adjacent surfaces of an annular ring and constituted so as to be displaced from one another for a predetermined angle at a time so as to extend along a circumferential direction of the different adjacent surfaces of the annular ring, by which the conductor portions of the coil elements are disposed so as to be displaced at a time from one surface of the annular ring to another surface adjacent thereto while extending in the circumferential direction so that the identical coil elements are respectively arranged three-dimensionally in a radial direction and a height direction of the annular ring.