Modular device of tubular plasma source
AssigneeDuratek, Inc.
InventorDavid Tu
Life of this patent
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Abstract
A modular device of tubular plasma source mainly includes at least two tubular antennae, one RF power supply and one reference potential. The tubular antennae are arranged side by side for inducing plasma. Each tubular antenna includes an induction coil being a spiral spring shape, and a dielectric sleeve having a hollow through hole for putting in the induction coil. The RF power supply connects with the induction coil in parallel or in series, the reference potential refers to the RF power supply and connects with the induction coil.
Claims16
A modular device of tubular plasma source in a plasma processing chamber, comprising:
- at least two tubular antennae arranged side by side for inducing plasma, wherein each tubular antenna comprises an induction coil having a spiral spring shape, each tubular antenna including a dielectric sleeve having a hollow through hole accommodating the induction coil;
- at least a RF power supply connected with the induction coils;
- and
- at least a reference potential referring to the RF power supply and connected with the induction coil.
A tubular antenna for connecting with RF power supply for inducing plasma, comprising:
- a dielectric sleeve having a hollow through hole;
- and
- an induction coil having a spiral spring shape and located in the dielectric sleeve.
A plasma processing chamber, comprising:
- a processing chamber including an upper chamber body and a lower chamber body, wherein the upper chamber body has a gas inlet;
- a pedestal installed in the lower chamber body for holding a substrate;
- a vacuum pump connected to the lower chamber body for discharging a gas in the processing chamber;
- and
- a modular device of tubular plasma source disposed in the upper chamber body, and comprising at least two tubular antennae, one RF power supply and one reference potential, wherein the tubular antennae are arranged side by side in parallel for inducing plasma, each tubular antenna at least includes an induction coil having a spiral spring shape, the RF power supply being connected to the induction coil, and the reference potential is referred to the RF power supply and connected to the induction coil.
Dependencies are inferred from the claim text.