Patent ID: 9524854
Filing Date: 2016-12-20
CPC Classification: H01J,H05H

Claim Text:
1. A remote plasma source system comprising: a first electrode; a second electrode, one of the first or second electrodes at least partially surrounding the other; a chamber enclosed by a chamber wall and configured to be externally coupled to a sub-atmospheric processing chamber, the chamber wall separating the first electrode from the second electrode, and the chamber including: an RF power source input configured to couple to an RF power source and provide RF power from the RF power source to the first electrode, the RF power electrostatically coupling to the second electrode so as to electrostatically sustain a plasma within at least a portion of the chamber; a first dielectric component separating the first electrode from the plasma, DC isolating the first electrode from the plasma, and preventing the plasma from interacting with the first electrode; and a second dielectric component separating the second electrode from the plasma, DC isolating the second electrode from the plasma, and preventing the plasma from interacting with the second electrode; and controllable impedance matching circuitry coupled to the RF power source and the first electrode to enable operation of the remote plasma source across a range of sub-atmospheric pressures.