Abstract:
The invention relates to a plasma processing reactor for processing a substrate. The plasma processing reactor includes a process chamber. The plasma processing reactor further includes an inductive coil configured to be coupled to a RF power source having a RF frequency wherein the inductive coil generates an electric field inside of the process chamber. The plasma processing reactor additionally includes a magnetic field producing device configured to produce a magnetic field inside the process chamber in proximity of the electric field.
Abstract:
An inductive plasma processor includes an RF plasma excitation coil having plural windings, each having a first end connected in parallel to be driven by a single RF source via a single matching network. Second ends of the windings are connected to ground by termination capacitors, in turn connected by a lead to ground. A current sensor including a winding around a toroidal core is coupled to the lead between each termination capacitor and ground. The current sensor is surrounded by a grounded shield. There is minimum electromagnetic interference from an ambient RF environment to the current sensor, to provide an accurate current sensor.
Abstract:
A plasma processing chamber includes a substrate holder and a member of silicon nitride such as a liner, focus ring or a gas distribution plate, the member having an exposed surface adjacent the substrate holder and the exposed surface being effective to minimize particle contamination during processing of substrates. The chamber can include an antenna which inductively couples RF energy through the gas distribution plate to energize process gas into a plasma state.