Micromechanical sensor unit and method for manufacturing a micromechanical sensor unit

    公开(公告)号:US11912565B2

    公开(公告)日:2024-02-27

    申请号:US17282331

    申请日:2019-12-17

    申请人: Robert Bosch GmbH

    IPC分类号: B81B7/04 G01L9/00

    摘要: A micromechanical sensor unit, including: a substrate and an edge layer, which is situated on the substrate and laterally frames an inner area above the substrate; at least one diaphragm, which spans the inner area and forms a covered cavity above the substrate; at least one support point, which is situated between the substrate and the diaphragm inside the cavity and attaches the diaphragm to the edge layer and/or to the at least one support point. The support point separates the diaphragm into at least one measuring area that is movable through force action and at least one reference area that is not movable through force action. The substrate and the diaphragm, inside the cavity, include electrodes, which face one another in the measuring area and the reference area.

    COUPLED MEMS RESONATOR
    4.
    发明申请

    公开(公告)号:US20220060171A1

    公开(公告)日:2022-02-24

    申请号:US17521180

    申请日:2021-11-08

    发明人: Antti JAAKKOLA

    摘要: A microelectromechanical resonator includes a support structure, a resonator element suspended to the support structure, and an actuator for exciting the resonator element to a resonance mode. The resonator element includes a plurality of adjacent sub-elements each having a length and a width and a length-to-width aspect ratio of higher than 1 and being adapted to a resonate in a length-extensional, torsional or flexural resonance mode. Further, each of the sub-elements is coupled to at least one other sub-element by one or more connection elements coupled to non-nodal points of the of said resonance modes of the sub-elements for exciting the resonator element into a collective resonance mode.

    COUPLED MEMS RESONATOR
    9.
    发明申请

    公开(公告)号:US20200304093A1

    公开(公告)日:2020-09-24

    申请号:US16607165

    申请日:2019-02-06

    发明人: Antti JAAKKOLA

    摘要: A microelectromechanical resonator includes a support structure, a resonator element suspended to the support structure, and an actuator for exciting the resonator element to a resonance mode. The resonator element includes a plurality of adjacent sub-elements each having a length and a width and a length-to-width aspect ratio of higher than 1 and being adapted to a resonate in a length-extensional, torsional or flexural resonance mode. Further, each of the sub-elements is coupled to at least one other sub-element by one or more connection elements coupled to non-nodal points of the of said resonance modes of the sub-elements for exciting the resonator element into a collective resonance mode.