Patent ID: 8674607
Filing Date: 2014-03-18
Classification: H01J,Y10T

Abstract:
1. A plasma processing apparatus for generating inductively coupled plasma in a processing chamber and performing a process on a substrate accommodated in the processing chamber, the apparatus comprising: an upper cover installed to cover a top opening of the processing chamber and having a dielectric window; a high frequency coil installed above the dielectric window at an outer side of the processing chamber; a gas supply mechanism supported by the upper cover and installed under the dielectric window, wherein the gas supply mechanism comprises a layered body including a plurality of plates having through holes, the gas supply mechanism is configured to supply a processing gas into the processing chamber in a horizontal direction from a plurality of ports via a plurality of groove-shaped gas channels installed between the plates or between the plate and the dielectric window, end portions of the groove-shaped gas channels are opened to edges of the through holes, and each of the plates has an annular shape, and inner diameters of the plates having the annular shape decrease as the plates become closer to a side of the dielectric window.