Systems and methods for radial and azimuthal control of plasma uniformity

    公开(公告)号:US10431429B2

    公开(公告)日:2019-10-01

    申请号:US15424488

    申请日:2017-02-03

    Abstract: A system includes a process chamber, a housing that defines a waveguide cavity, and a first conductive plate within the housing. The first conductive plate faces the process chamber. The system also includes one or more adjustment devices that can adjust at least a position of the first conductive plate, and a second conductive plate, coupled with the housing, between the waveguide cavity and the process chamber. Electromagnetic radiation can propagate from the waveguide cavity into the process chamber through apertures in the second conductive plate. The system also includes a dielectric plate that seals off the process chamber from the waveguide cavity, and one or more electronics sets that transmit the electromagnetic radiation into the waveguide cavity. A plasma forms when at least one process gas is within the chamber, and the electromagnetic radiation propagates into the process chamber from the waveguide cavity.

    FAST GAS SWITCHING
    15.
    发明公开
    FAST GAS SWITCHING 审中-公开

    公开(公告)号:US20240203695A1

    公开(公告)日:2024-06-20

    申请号:US18083372

    申请日:2022-12-16

    Abstract: A system including a chamber enclosing a processing region, a substrate support within the chamber and configured to retain a substrate in the processing region, a gas distribution manifold coupled to the chamber to introduce first and a second etching gases from the gas distribution manifold using first and second inlets, a first gas distribution channel coupled configured to selectively switch between directing the first etching gas along a first gas flow path towards the processing region, and directing the first etching gas towards a vent, and a second gas distribution channel configured to selectively switch between directing the second etching gas towards the vent, and directing the second etching gas along a fourth gas flow path towards the processing region, and a flow ratio controller operatively coupled to the first and second gas distribution channels and configured to direct the first or second etching gases towards the processing region.

    Methods and apparatus for processing a substrate

    公开(公告)号:US11361941B2

    公开(公告)日:2022-06-14

    申请号:US16906875

    申请日:2020-06-19

    Abstract: Methods and apparatus for processing a substrate are herein described. For example, a processing chamber for processing a substrate includes a chamber body defining a processing volume; a radio frequency (RF) power source configured to deliver RF energy to the processing volume for processing a substrate; a substrate support comprising an electrode; an AC power supply configured to supply power to the processing chamber; an RF filter circuit connected between the electrode and the AC power supply; and a controller configured to monitor an RF voltage at the RF filter circuit that is indirectly induced into the electrode by the RF power source during operation, and to determine a processing state in the processing volume based on the monitored RF voltage.

    CYLINDRICAL CAVITY WITH IMPEDANCE SHIFTING BY IRISES IN A POWER-SUPPLYING WAVEGUIDE

    公开(公告)号:US20220093364A1

    公开(公告)日:2022-03-24

    申请号:US17542781

    申请日:2021-12-06

    Abstract: A plasma reactor has a cylindrical microwave cavity overlying a workpiece processing chamber, a microwave source having a pair of microwave source outputs, and a pair of respective waveguides. The cavity has first and second input ports in a sidewall and space apart by an azimuthal angle. Each of the waveguides has a microwave input end coupled to a microwave source output and a microwave output end coupled to a respective one of the first and second input ports, a coupling aperture plate at the output end with a rectangular coupling aperture in the coupling aperture plate, and an iris plate between the coupling aperture plate and the microwave input end with a rectangular iris opening in the iris plate.

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