Abstract:
A method, system, and apparatus for reducing particle generation on a showerhead during an ion bombarding process in a process chamber are provided. First and second RF signals are supplied from an RF generator to an electrode embedded in a substrate support in the process chamber. The second RF signal is adjusted relative to the first RF signal in response to a measurement of a first RF amplitude, a second RF amplitude, a first RF phase, and a second RF phase. Ion bombardment on a substrate is maximized and the quantity of particles generated on the showerhead is minimized. Methods and systems described herein provide for improved ion etching characteristics while reducing the amount of debris particles generated from the showerhead.
Abstract:
A substrate support assembly includes a shaft assembly, a pedestal coupled to a portion of the shaft assembly, and a first rotary connector coupled to the shaft assembly, wherein the first rotary connector comprises a first coil member surrounding a rotatable shaft member that is electrically coupled to the shaft assembly, the first coil member being rotatable with the rotatable shaft, and a second coil member surrounding the first coil member, the second coil member being stationary relative to the first coil member, wherein the first coil member electrically couples with the second coil member when the rotating radio frequency applicator is energized and provides a radio frequency signal/power to the pedestal through the shaft assembly.
Abstract:
Embodiments described herein relate to apparatus and techniques for radio frequency (RF) phase control in a process chamber. A process volume is defined in the process chamber by a faceplate electrode and a support pedestal. A grounding bowl is disposed within the process chamber about the support pedestal opposite the process volume. The grounding bowl substantially fills a volume other than the process volume below the support pedestal. A phase tuner circuit is coupled to an RF mesh disposed in the support pedestal and the faceplate electrode. The tuner circuit adjusts a phase difference between a phase of the faceplate electrode and a phase of the RF mesh.
Abstract:
A substrate support assembly includes a shaft assembly, a pedestal coupled to a portion of the shaft assembly, and a first rotary connector coupled to the shaft assembly, wherein the first rotary connector comprises a first coil member surrounding a rotatable shaft member that is electrically coupled to the shaft assembly, the first coil member being rotatable with the rotatable shaft, and a second coil member surrounding the first coil member, the second coil member being stationary relative to the first coil member, wherein the first coil member electrically couples with the second coil member when the rotating radio frequency applicator is energized and provides a radio frequency signal/power to the pedestal through the shaft assembly.