DUAL FOCUS SOLUTON FOR SEM METROLOGY TOOLS
    6.
    发明公开

    公开(公告)号:US20240071713A1

    公开(公告)日:2024-02-29

    申请号:US18270707

    申请日:2021-12-09

    CPC classification number: H01J37/20 H01J37/28 H01J2237/20235

    Abstract: There is provided a charged particle apparatus comprising: a particle beam generator, optics, a first and a second positioning device, both configured for positioning the substrate relative to the particle beam generator along its optical axis, and a controller configured for switching between a first operational mode and a second operational mode. The apparatus is configured, when operating in the first operational mode, for irradiating the substrate by the particle beam at a first landing energy of the particle beam and, when operating in the second operational mode, for irradiating the substrate at a second, different landing energy. When operating in the first operational mode, the second positioning device is configured to position the substrate relative to the particle beam generator at a first focus position of the particle beam and in the second operational mode, to position the substrate at a second, different focus position.

    Method of cleaning stage in plasma processing apparatus, and the plasma processing apparatus

    公开(公告)号:US11865591B2

    公开(公告)日:2024-01-09

    申请号:US17103918

    申请日:2020-11-24

    Abstract: A method of cleaning a stage in a plasma processing apparatus including the stage on which a substrate is placed, a lifting mechanism configured to raise and lower the substrate with respect to the stage, and a high-frequency power supply connected to the stage, includes: separating the stage and the substrate from each other using the lifting mechanism; and after the separating the stage and the substrate from each other, removing a deposit deposited on the stage with plasma generated by supplying a high-frequency power from the high-frequency power supply to the stage. In the separating the stage and the substrate from each other, a separation distance between the stage and the substrate is set such that a combined impedance formed around an outer peripheral portion of the stage is lower than a combined impedance formed immediately above a central portion of the stage.

    Plasma processing apparatus and plasma processing method

    公开(公告)号:US11854772B2

    公开(公告)日:2023-12-26

    申请号:US17311149

    申请日:2019-11-26

    Inventor: Masaki Hirayama

    Abstract: A plasma processing apparatus according to an exemplary embodiment includes a processing container, a stage, a dielectric plate, an upper electrode, an introduction part, a driving shaft, and an actuator. The stage is provided in the processing container. The dielectric plate is provided above the stage via a space in the processing container. The upper electrode has flexibility, is provided above the dielectric plate, and provides a gap between the dielectric plate and the upper electrode. The introduction part is an introduction part of radio frequency waves that are VHF waves or UHF waves, is provided at a horizontal end portion of the space. The driving shaft is coupled to the upper electrode on a central axial line of the processing container. The actuator is configured to move the driving shaft in a vertical direction.

    COOLING PLATE
    9.
    发明公开
    COOLING PLATE 审中-公开

    公开(公告)号:US20230377854A1

    公开(公告)日:2023-11-23

    申请号:US18313003

    申请日:2023-05-05

    Inventor: Yoichi YAMADA

    Abstract: There is provided a cooling plate comprising: lift pins configured to support a substrate; a placing surface capable of having the substrate placed thereon; and a nozzle disposed in the placing surface and configured to blow an inert gas in a combination of a straight flow and a swirling flow toward the substrate lifted from the placing surface by the lift pins.

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