Bulk-acoustic wave resonator
    22.
    发明授权

    公开(公告)号:US11057017B2

    公开(公告)日:2021-07-06

    申请号:US15996921

    申请日:2018-06-04

    Abstract: A bulk-acoustic wave resonator includes a substrate; a lower electrode formed on the substrate, and at least a portion of the lower electrode is formed on a cavity; a piezoelectric layer formed on the lower electrode; an upper electrode formed on the piezoelectric layer; a membrane layer formed below the lower electrode and forming the cavity together with the substrate; and a protruding portion formed on the membrane layer and further formed in the cavity in a direction that extends away from the membrane layer.

    ACCELERATION SENSOR
    28.
    发明申请
    ACCELERATION SENSOR 审中-公开
    加速传感器

    公开(公告)号:US20140144236A1

    公开(公告)日:2014-05-29

    申请号:US13845094

    申请日:2013-03-18

    CPC classification number: G01P15/18 G01P15/123 G01P2015/084

    Abstract: Disclosed herein is an accelerator sensor, including: a mass body; a flexible beam that is provided with a piezoresistive element configured of an X-axis resistive element, a Y-axis resistive element, and a Z-axis resistive element having both ends connected with contact pads and is connected with the mass body; and a support portion that is connected with the flexible beam and supports the flexible beam so as to float the mass body, wherein the flexible beam has a slit provided between one-axis resistive element and the other axis resistive element adjacent to each other and the slit is extendedly formed from the contact pads connected with ends of the one axis resistive element and the other axis resistive element to the contact pads connected with the other ends thereof.

    Abstract translation: 这里公开了一种加速器传感器,包括:质量体; 具有由X轴电阻元件,Y轴电阻元件和Z轴电阻元件构成的压阻元件的柔性梁,其两端与接触焊盘连接并与质量体连接; 以及支撑部,其与柔性梁连接并支撑柔性梁以使质量体浮起,其中柔性梁具有设置在彼此相邻的一个轴电阻元件和另一个轴电阻元件之间的狭缝, 狭缝从与单轴电阻元件的端部连接的接触焊盘和另一个轴电阻元件延伸地形成到与其另一端连接的接触焊盘。

    Bulk acoustic resonator and filter device

    公开(公告)号:US11437975B2

    公开(公告)日:2022-09-06

    申请号:US16939344

    申请日:2020-07-27

    Abstract: A bulk acoustic resonator includes: a substrate; a first electrode disposed on the substrate; a piezoelectric layer disposed to cover at least a portion of the first electrode; a second electrode disposed to cover at least a portion of the piezoelectric layer; and an insertion layer disposed below a partial region of the piezoelectric layer. A thickness of the first electrode in an active region in which the first electrode, the piezoelectric layer, and the second electrode overlap one another is less than a thickness of a region outside the active region. An angle of inclination of an internal side surface of the insertion layer is different from an angle of inclination of an external side surface of the insertion layer.

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