Patent ID: 8884525
Filing Date: 2014-11-11
Classification: H05H

Abstract:
1. A remote plasma source comprising: a first inductive coil having a first plurality of loops, the first plurality of loops having an average radius R1; a second inductive coil having a second plurality of loops, the second plurality of loops having the average radius R1, wherein the first and second inductive coils are parallel to each other and separated by a distance D, wherein the first and second inductive coils are configured to conduct an alternating current to generate magnetic fields that sustain a disc-shaped plasma between the first and second inductive coils, wherein the alternating current sustains the disc-shaped plasma primarily through inductive coupling; a chamber disposed between the first and second inductive coils, and configured to enclose the disc-shaped plasma; a first dielectric layer parallel to the first and second inductive coils and disposed between the chamber and the first inductive coil, wherein the first dielectric layer is configured to reduce capacitive coupling between the first inductive coil and the disc-shaped plasma and allow the magnetic fields to pass from the first inductive coil to the disc-shaped plasma; and a second dielectric layer parallel to the first and second inductive coils and arranged between the chamber and the second inductive coil, wherein the second dielectric layer is configured to reduce capacitive coupling between the second inductive coil and the disc-shaped plasma and allow the magnetic fields to pass from the second inductive coil to the disc-shaped plasma; a gas entry connected to the chamber and configured to provide non-activated gas to the chamber; and a gas exit connected to the chamber and configured to enable activated gas and free radicals to exit the chamber.