Etch improvement
    12.
    发明授权

    公开(公告)号:US11852853B2

    公开(公告)日:2023-12-26

    申请号:US17147338

    申请日:2021-01-12

    CPC classification number: G02B5/1857 H01J37/3056

    Abstract: A method is provided. The method includes exposing a first material disposed across a first plane on a first substrate to an ion beam to form a first plurality of structures in the first material, the ion beam directed at the first material at an ion beam angle ϑ relative to a surface normal of the first substrate. The first substrate is positioned at a first rotation angle ϕ1 between the ion beam and a first vector of the first plurality of structures, the first material is exposed to the ion beam incrementally along a first direction, and exposure of the first material to the ion beam is varied along the first direction to generate a depth variation between the first plurality of structures in the first direction.

    Methods for controlling etch depth by localized heating

    公开(公告)号:US11554445B2

    公开(公告)日:2023-01-17

    申请号:US16694580

    申请日:2019-11-25

    Abstract: Embodiments of the present disclosure relate to methods for controlling etch depth by providing localized heating across a substrate. The method for controlling temperatures across the substrate can include individually controlling a plurality of heating pixels disposed in a dielectric body of a substrate support assembly. The plurality of heating pixels provide temperature distributions on a first surface of the substrate disposed on a support surface of the dielectric body. The temperature distributions correspond to a plurality of portions of at least one grating on a second surface of the substrate to be exposed to an ion beam. Additionally, the temperatures can be controlled by individually controlling light emitting diodes (LEDs) of LED arrays. The substrate is exposed to the ion beam to form a plurality of fins on the at least one grating. The at least one grating has a distribution of depths corresponding to the temperature distributions.

    Methods for variable etch depths
    17.
    发明授权

    公开(公告)号:US11456205B2

    公开(公告)日:2022-09-27

    申请号:US16871751

    申请日:2020-05-11

    Abstract: Methods of producing grating materials with variable height fins are provided. In one example, a method may include providing a mask layer atop a substrate, the mask layer including a first opening over a first processing area and a second opening over a second processing area. The method may further include etching the substrate to recess the first and second processing areas, forming a grating material over the substrate, and etching the grating material in the first and second processing areas to form a plurality of structures oriented at a non-zero angle with respect to a vertical extending from a top surface of the substrate.

    Formation of angled gratings
    19.
    发明授权

    公开(公告)号:US11380578B2

    公开(公告)日:2022-07-05

    申请号:US16656798

    申请日:2019-10-18

    Abstract: Systems and methods discussed herein can be used to form gratings at various slant angles across a grating material on a single substrate by determining an ion beam angle and changing the angle of an ion beam among and between ion beam angles to form gratings with varying angles and cross-sectional geometries. The substrate can be rotated around a central axis, and one or more process parameters, such as a duty cycle of the ion beam, can be modulated to form a grating with a depth gradient.

    Apparatus, system and techniques for mass analyzed ion beam

    公开(公告)号:US10763072B1

    公开(公告)日:2020-09-01

    申请号:US16354638

    申请日:2019-03-15

    Abstract: An apparatus may include a housing including an entrance aperture, to receive an ion beam. The apparatus may include an exit aperture, disposed in the housing, downstream to the entrance aperture, the entrance aperture and the exit aperture defining a beam axis, extending therebetween. The apparatus may include an electrodynamic mass analysis assembly disposed in the housing and comprising an upper electrode assembly, disposed above the beam axis, and a lower electrode assembly, disposed below the beam axis. The apparatus may include an AC voltage assembly, electrically coupled to the upper electrode assembly and the lower electrode assembly, wherein the upper electrode assembly is arranged to receive an AC signal from the AC voltage assembly at a first phase angle, and wherein the lower electrode assembly is arranged to receive the AC signal at a second phase angle, the second phase angle 180 degrees shifted from the first phase angle.

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