CORROSION RESISTANT GROUND SHIELD OF PROCESSING CHAMBER

    公开(公告)号:US20230122695A1

    公开(公告)日:2023-04-20

    申请号:US18067632

    申请日:2022-12-16

    Abstract: A ground shield of a processing chamber includes a ceramic body including a ground shield plate, a raised edge extending from an upper surface of the ground shield plate, and a hollow shaft that extends from a lower surface of the ground shield plate. An electrically conductive layer is formed on and conforms to at least the upper surface of the ground shield plate and an interior surface of the hollow shaft. A first protective layer is formed on at least the electrically conductive layer. A heater plate of a heater first within the raised edge and on the ground shield plate such that the heater plate is disposed on top of the first protective layer, the electrically conductive layer, and the upper surface of the ground shield plate.

    Low temperature chuck for plasma processing systems

    公开(公告)号:US11594428B2

    公开(公告)日:2023-02-28

    申请号:US15581497

    申请日:2017-04-28

    Abstract: A wafer chuck assembly includes a puck, a shaft and a base. The puck includes an electrically insulating material that defines a top surface of the puck; a plurality of electrodes are embedded within the electrically insulating material. The puck also includes an inner puck element that forms one or more channels for a heat exchange fluid, the inner puck element being in thermal communication with the electrically insulating material, and an electrically conductive plate disposed proximate to the inner puck element. The shaft includes an electrically conductive shaft housing that is electrically coupled with the plate, and a plurality of connectors, including electrical connectors for the electrodes. The base includes an electrically conductive base housing that is electrically coupled with the shaft housing, and an electrically insulating terminal block disposed within the base housing, the plurality of connectors passing through the terminal block.

    Methods and apparatus for dynamical control of radial uniformity with two-story microwave cavities

    公开(公告)号:US11348783B2

    公开(公告)日:2022-05-31

    申请号:US16562002

    申请日:2019-09-05

    Abstract: Methods and apparatus provide plasma generation for semiconductor process chambers. In some embodiments, the plasma is generated by a system that may comprise a process chamber having at least two upper microwave cavities separated from a lower microwave cavity by a metallic plate with a plurality of radiation slots, at least one microwave input port connected to a first one of the at least two upper microwave cavities, at least two microwave input ports connected to a second one of the at least two upper microwave cavities, and the lower microwave cavity receives radiation through the plurality of radiation slots in the metallic plate from both of the at least two upper microwave cavities, the lower microwave cavity is configured to form an electric field that provides uniform plasma distribution in a process volume of the process chamber.

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