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    • 4. 发明授权
    • Piezoelectric bimorph switch
    • 压电双压电晶片开关
    • US08847466B2
    • 2014-09-30
    • US13000256
    • 2009-06-18
    • Olaf WunnickeKlaus Reimann
    • Olaf WunnickeKlaus Reimann
    • H01H57/00H01L41/09
    • H01H57/00H01L41/094
    • The present invention relates to a piezoelectric bimorph switch, specifically a cantilever (single clamped beam) switch, which can be actively opened and closed. Piezoelectric bimorph switch are known from the prior art. Such a switch may be regarded as an actuator. Actuators are regarded as a subdivision of transducers. They are devices, which transform an input signal (mainly an electrical signal) into motion. Electrical motors, pneumatic actuators, hydraulic pistons, relays, comb drive, piezoelectric actuators, thermal bimorphs, Digital Micromirror Devices and electroactive polymers are some examples of such actuators. The switch of the invention comprises piezoelectric stack layers (121, 122), which form a symmetrical stack, wherein an electric field is always applied in the same direction as the poling direction of the piezoelectric layers.
    • 本发明涉及一种压电双压电晶体开关,特别涉及一种可以被主动地打开和关闭的悬臂(单夹紧梁)开关。 压电双压电晶体开关是从现有技术中已知的。 这样的开关可以被认为是致动器。 致动器被视为传感器的细分。 它们是将输入信号(主要是电信号)变换为运动的装置。 电动机,气动执行器,液压活塞,继电器,梳齿驱动器,压电致动器,热双压电晶片,数字微镜器件和电活性聚合物是这种致动器的一些例子。 本发明的开关包括形成对称叠层的压电堆叠层(121,122),其中总是沿与压电层的极化方向相同的方向施加电场。
    • 7. 发明授权
    • MEMS switch and fabrication method
    • MEMS开关和制造方法
    • US08513745B2
    • 2013-08-20
    • US12996505
    • 2009-05-29
    • Peter Gerard SteenekenHilco SuyMartijn GoossensOlaf Wunnicke
    • Peter Gerard SteenekenHilco SuyMartijn GoossensOlaf Wunnicke
    • H01L29/84
    • H01H59/0009
    • A MEMS switch (1, 81), and methods of fabricating thereof, the switch comprising: a sealed cavity (24); and a membrane (26); wherein the sealed cavity (24) is defined in part by the membrane (26); and the membrane is a 5 metallic membrane (26), for example consisting of a single type of metal or metal alloy. The MEMS switch (1, 81) may comprise a top electrode (30), for example extending into the cavity (24), located in a hole (32) in the metallic membrane (26). Fabrication may include providing a sacrificial layer (22) in a partly defined cavity (24). The bending stiffness of the membrane (26) may be 10 higher along an RF line (102) than along a line (104) perpendicular to the RF line (102), for example by virtue of the cavity (24) being elliptical.
    • 一种MEMS开关(1,81)及其制造方法,所述开关包括:密封空腔(24); 和膜(26); 其中所述密封空腔(24)部分地由所述膜(26)限定; 并且膜是例如由单一类型的金属或金属合金组成的5金属膜(26)。 MEMS开关(1,81)可以包括位于金属膜(26)中的孔(32)中的顶部电极(30),例如延伸到空腔(24)中。 制造可以包括在部分限定的空腔(24)中提供牺牲层(22)。 沿着RF线(102),例如通过空腔(24)是椭圆形的,膜(26)的弯曲刚度可以比垂直于RF线(102)的线(104)高10。
    • 9. 发明申请
    • PRESSURE SENSOR WITH PRESSURE-ACTUATED SWITCH
    • 带压力开关的压力传感器
    • US20120167659A1
    • 2012-07-05
    • US12985052
    • 2011-01-05
    • Willem Frederik Adrianus BeslingPeter Gerard SteenekenOlaf Wunnicke
    • Willem Frederik Adrianus BeslingPeter Gerard SteenekenOlaf Wunnicke
    • G01L27/00B05D3/10G01L9/12
    • G01L9/0047G01L9/0072H01H35/346
    • Various embodiments relate to a pressure sensor and related methods of manufacturing and use. A pressure sensor may include an electrical contact included in a flexible membrane that deflects in response to a measured ambient pressure. The electrical contact may be separated from a signal path through a cavity formed using a sacrificial layer and PVD plugs. At one or more defined touch-point pressure thresholds, the membrane of the pressure sensor may deflect so that the state of contact between an electrical contact and one or more sections of a signal path may change. In some embodiments, the change of state may cause the pressure sensor to trigger an alarm in the electrical circuit. Various embodiments also enable the operation of the electrical circuit for testing and calibration through the use of one or more actuation electrode layers.
    • 各种实施例涉及压力传感器和相关的制造和使用方法。 压力传感器可以包括包括在柔性膜中的电触点,其响应于测量的环境压力而偏转。 电接触可以通过通过使用牺牲层和PVD插塞形成的腔的信号路径分离。 在一个或多个限定的接触点压力阈值处,压力传感器的膜可以偏转,使得电触点与信号路径的一个或多个部分之间的接触状态可能改变。 在一些实施例中,状态的改变可能导致压力传感器触发电路中的警报。 各种实施例还使得电路的操作能够通过使用一个或多个致动电极层进行测试和校准。