Abstract:
Plasma is generated in a semiconductor process chamber by a plurality of microwave inputs with slow or fast rotation. Radial uniformity of the plasma is controlled by regulating the power ratio of a center-high mode and an edge-high mode of the plurality of microwave inputs into a microwave cavity. The radial uniformity of the generated plasma in a plasma chamber is attained by adjusting the power ratio for the two modes without inputting time-splitting parameters for each mode.
Abstract:
Embodiments of showerheads having a detachable gas distribution plate are provided herein. In some embodiments, a showerhead for use in a semiconductor processing chamber may include a base having a first side and a second side; a gas distribution plate disposed proximate the second side of the base; a clamp disposed about a peripheral edge of the gas distribution plate to removably couple the gas distribution plate to the base; and a thermal gasket disposed between the base and gas distribution plate.
Abstract:
Methods and apparatus for particle reduction in throttle gate valves used in substrate process chambers are provided herein. In some embodiments, a gate valve for use in a process chamber includes a body having an opening disposed therethrough from a first surface to an opposing second surface of the body; a pocket extending into the body from a sidewall of the opening; a gate movably disposed within the pocket between a closed position that seals the opening and an open position that reveals the opening and disposes the gate completely within the pocket; and a plurality of gas ports disposed in the gate valve configured to direct a gas flow into a portion of the gate valve fluidly coupled to the opening.
Abstract:
Embodiments of showerheads having a detachable gas distribution plate are provided herein. In some embodiments, a showerhead for use in a substrate processing chamber includes a body having a first side and an opposing second side; a gas distribution plate disposed proximate the second side of the body; and a clamp disposed about a peripheral edge of the gas distribution plate to removably couple the gas distribution plate to the body, wherein the body is electrically coupled to the gas distribution plate through the clamp.
Abstract:
A plasma processing apparatus may include a process chamber having an interior processing volume, first, second and third RF coils disposed proximate the process chamber to couple RF energy into the processing volume, wherein the second RF coil disposed coaxially with respect to the first RF coil, and wherein the third RF coil disposed coaxially with respect to the first and second RF coils, at least one ferrite shield disposed proximate to at least one of the first, second or third RF coils, wherein the ferrite shield is configured to locally guide a magnetic field produced by an RF current flow through the first, second or third RF coils toward the process chamber, wherein the plasma processing apparatus is configured to control a phase of each RF current flow through each of the of the first, second or third RF coils.
Abstract:
Apparatus for processing substrates are provided herein. In some embodiments, an apparatus includes a first conductive body disposed about a substrate support in the inner volume of a process chamber; a first conductive ring having an inner edge coupled to a first end of the second conductive body and having an outer edge disposed radially outward of the inner edge; a second conductive body coupled to the outer edge of the first conductive ring and having at least a portion disposed above the first conductive ring, wherein the first conductive ring and the at least a portion of the second conductive body partially define a first region above the first conductive ring; and a heater configured to heat the first conductive body, the second conductive body, and the first conductive ring.
Abstract:
A plasma processing system includes a process chamber and a plasma source that generates a plasma in a plasma cavity. The plasma cavity is substantially symmetric about a toroidal axis. The plasma source defines a plurality of outlet apertures on a first axial side of the plasma cavity Plasma products produced by the plasma pass in the axial direction, through the plurality of outlet apertures, from the plasma cavity toward the process chamber. A method of plasma processing includes generating a plasma within a substantially toroidal plasma cavity that defines a toroidal axis, to form plasma products, and distributing the plasma products to a process chamber through a plurality of outlet openings substantially azimuthally distributed about a first axial side of the plasma cavity, directly into a process chamber.
Abstract:
An apparatus for supplying plasma products includes a plasma generation block that defines a toroidal plasma cavity therein. The plasma cavity is substantially symmetric about a toroidal axis, and the toroidal axis defines a first and second axial side of the plasma generation block. A magnetic element at least partially surrounds the plasma generation block at one azimuthal location with respect to the toroidal axis, such that a magnetic flux within the magnetic element induces a corresponding electric field into the plasma cavity to generate a plasma from one or more source gases, the plasma forming plasma products. The plasma generation block supplies the plasma products through a plurality of output apertures defined by the plasma generation block on the first axial side.
Abstract:
Embodiments of electrostatic chucks are provided herein. In some embodiments, an electrostatic chuck for supporting and retaining a substrate having a given width may include a dielectric member having a support surface configured to support a substrate having a given width; an electrode disposed within the dielectric member beneath the support surface and extending from a center of the dielectric member outward to an area beyond an outer periphery of the substrate as defined by the given width of the substrate; an RF power source coupled to the electrode; and a DC power source coupled to the electrode.