Method of aberration measurement and electron microscope

    公开(公告)号:US10886099B2

    公开(公告)日:2021-01-05

    申请号:US16282897

    申请日:2019-02-22

    Applicant: JEOL Ltd.

    Abstract: There is provided a method of aberration measurement capable of reducing the effects of image drift. The novel method of aberration measurement is for use in an electron microscope. The method comprises the steps of: acquiring a first image that is a TEM (transmission electron microscope) image of a sample; scanning the illumination angle of an electron beam impinging on the sample and acquiring a second image by multiple exposure of a plurality of TEM images generated at different illumination angles; and calculating aberrations from the first and second images.

    Gas distribution showerhead for semiconductor processing

    公开(公告)号:US10577690B2

    公开(公告)日:2020-03-03

    申请号:US15492928

    申请日:2017-04-20

    Abstract: Embodiments disclosed herein generally relate to a gas distribution assembly for providing improved uniform distribution of processing gases into a semiconductor processing chamber. The gas distribution assembly includes a gas distribution plate, a blocker plate, and a dual zone showerhead. The gas distribution assembly provides for independent center to edge flow zonality, independent two precursor delivery, two precursor mixing via a mixing manifold, and recursive mass flow distribution in the gas distribution plate.

    Method of removing silicon oxide film

    公开(公告)号:US10546753B2

    公开(公告)日:2020-01-28

    申请号:US16038863

    申请日:2018-07-18

    Abstract: Provided is a method of removing a silicon oxide film of a workpiece having an insulating film and the silicon oxide film exposed at a bottom portion of an opening formed in the insulating film, including: forming a protective film containing carbon on a surface of the workpiece, wherein the protective film has a first region extending along a side wall surface of the insulating film that defines the opening and a second region extending on the silicon oxide film: removing the second region of the protective film and the silicon oxide film by sputter etching with ions from plasma of a first inert gas; and removing a residue of the silicon oxide film by chemical etching. The step of forming the protective film includes executing a plurality of cycles.

    Advanced methods for plasma systems operation

    公开(公告)号:US10529540B2

    公开(公告)日:2020-01-07

    申请号:US15939835

    申请日:2018-03-29

    Abstract: Methods and systems for treating a substrate are described. In an embodiment, a method may include receiving a microelectronic substrate in a plasma processing chamber. A method may also include receiving process gas in the plasma processing chamber. Additionally, a method may include applying energy to the process gas with a first energy source and applying energy to the process gas with a second energy source. The method may further include selectively adjusting at least one of the first energy source and the second energy source between a first state and a second state.

    Polarization-dependent laser-assisted plasma etching

    公开(公告)号:US10510550B2

    公开(公告)日:2019-12-17

    申请号:US16140730

    申请日:2018-09-25

    Abstract: A method of laser-assisted plasma etching with polarized light comprises providing a surface of a substrate that includes at least one surface region having trenches arranged in a unidirectional pattern along an x-direction or a y-direction of the surface, where each trench has a depth along a z-direction. The trenches extend substantially in parallel with each other and have a half-pitch of about 100 nm or less. The surface is exposed to a plasma and simultaneously illuminated with a pulsed laser beam having a predetermined polarization along the x-direction or the y-direction, and the trenches are etched.

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