ELECTROSTATIC CHUCK
    1.
    发明公开
    ELECTROSTATIC CHUCK 审中-公开

    公开(公告)号:US20240363383A1

    公开(公告)日:2024-10-31

    申请号:US18621553

    申请日:2024-03-29

    IPC分类号: H01L21/683 H01J37/32

    摘要: An electrostatic chuck comprising; an electrostatic chuck body configured to have a step protruding from a lower end thereof in a radial direction, an adhesive layer on an upper surface of the electrostatic chuck body, a ceramic puck configured to be adhered to the adhesive layer and configured to have an edge protruding from the upper surface of the electrostatic chuck body, and a sealing member on a lower portion of an edge of the ceramic puck. The electrostatic chuck body is provided with an installation portion configured to have an inclined surface, and the sealing member is configured to be in contact with the inclined surface.

    Alignment and transport of substrate and focus ring

    公开(公告)号:US12131936B2

    公开(公告)日:2024-10-29

    申请号:US17394359

    申请日:2021-08-04

    摘要: An alignment apparatus includes a rotational support configured to rotate around a central axis, a rotation actuator, an edge sensor, and control circuitry. The rotational support includes substrate supports configured to concurrently support a substrate, and ring supports configured to concurrently support a focus ring. The rotation actuator is configured to rotate the rotational support around the central axis. The edge sensor is configured to generate an edge signal that changes in accordance with each of an edge position of the substrate and an edge position of the focus ring. The control circuitry is configured to control the rotation actuator to adjust a posture of the substrate to a first target posture based on the edge signal, and to control the rotation actuator to adjust a posture of the focus ring to a second target posture based on the edge signal.

    Methods and apparatus for toroidal plasma generation

    公开(公告)号:US12125689B2

    公开(公告)日:2024-10-22

    申请号:US17940513

    申请日:2022-09-08

    IPC分类号: H01J37/32

    摘要: Methods and apparatus for forming plasma in a process chamber use an annular exciter formed of a first conductive material with a first end electrically connected to an RF power source that provides RF current and a second end connected to a ground and an annular applicator, physically separated from the annular exciter, formed of a second conductive material with at least one angular split with an angle forming an upper overlap portion and a lower overlap portion separated by a high K dielectric material which is configured to provide capacitance in conjunction with an inductance of the annular applicator to form a resonant circuit that is configured to resonate when the annular exciter flows RF current that inductively excites the annular applicator to a resonant frequency which forms azimuthal plasma from the annular applicator.

    Charged particle beam source, surface processing apparatus and surface processing method

    公开(公告)号:US12125664B2

    公开(公告)日:2024-10-22

    申请号:US17575429

    申请日:2022-01-13

    IPC分类号: H01J37/08 H01J27/02 H01J37/32

    摘要: A charged particle beam source for a surface processing apparatus is disclosed. The charged particle beam source comprises: a plasma chamber; a plasma generation unit adapted to convert an input gas within the plasma chamber into a plasma containing charged particles; and a grid assembly adjacent an opening of the plasma chamber. The grid assembly comprises one or more grids each having a plurality of apertures therethrough, the one or more grids being electrically biased in use so as to accelerate charged particles from the plasma through the grid(s) to thereby output a charged particle beam, the major axis of which is substantially perpendicular to the plane of the grid assembly. The transmissivity of the or each grid to the charged particles is defined by the relative proportion of aperture area to non-aperture area, and at least one of the grids has a transmissivity which varies across the grid along a first direction, the transmissivity being lower adjacent a first extremity of the grid than adjacent a second extremity of the grid opposite the first extremity, the first direction lying parallel to the plane of the grid assembly, such that in use the charged particle beam output by the source has a non-uniform charged particle current density profile in a plane parallel to the plane of the grid assembly which varies along the first direction, the charged particle current density being lower adjacent a first edge of the beam than adjacent a second edge of the beam opposite the first edge.