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    • 3. 发明申请
    • MEMS VACUUM LEVEL MONITOR IN SEALED PACKAGE
    • 密封包装中的MEMS真空度监测器
    • US20130213139A1
    • 2013-08-22
    • US13401134
    • 2012-02-21
    • Tung-Tsun CHENJui-Cheng HUANGChung-Hsien LIN
    • Tung-Tsun CHENJui-Cheng HUANGChung-Hsien LIN
    • G01L7/00H01L29/84
    • G01L21/22B81C99/0045H01L27/0688
    • A vacuum sensor for sensing vacuum in a sealed enclosure is provided. The sealed enclosure includes active MEMS devices desired to be maintained in vacuum conditions. The vacuum sensor includes a motion beam anchored to an internal surface in the sealed enclosure. A driving electrode is disposed beneath the motion beam and a bias is supplied to cause the motion beam to deflect through electromotive force. A sensing electrode is also provided and detects capacitance between the sensing electrode disposed on the internal surface, and the motion beam. Capacitance changes as the gap between the motion beam and the sensing electrode changes. The amount of deflection is determined by the vacuum level in the sealed enclosure. The vacuum level in the sealed enclosure is thereby sensed by the sensing electrode.
    • 提供了用于感测密封外壳中的真空的真空传感器。 密封的外壳包括希望保持在真空条件下的有源MEMS器件。 真空传感器包括锚定在密封外壳中的内表面的运动梁。 驱动电极设置在运动光束下方,并且提供偏压以使运动光束通过电动势偏转。 还提供感测电极并且检测设置在内表面上的感测电极与运动光束之间的电容。 电容随着运动光束与感应电极之间的间隙而变化。 偏转量由密封外壳中的真空度决定。 因此,密封外壳中的真空度由感测电极感测。
    • 4. 发明授权
    • MEMS vacuum level monitor in sealed package
    • MEMS真空度监测仪在密封包装中
    • US08887573B2
    • 2014-11-18
    • US13401134
    • 2012-02-21
    • Tung-Tsun ChenJui-Cheng HuangChung-Hsien Lin
    • Tung-Tsun ChenJui-Cheng HuangChung-Hsien Lin
    • G01L11/00G01L13/02
    • G01L21/22B81C99/0045H01L27/0688
    • A vacuum sensor for sensing vacuum in a sealed enclosure is provided. The sealed enclosure includes active MEMS devices desired to be maintained in vacuum conditions. The vacuum sensor includes a motion beam anchored to an internal surface in the sealed enclosure. A driving electrode is disposed beneath the motion beam and a bias is supplied to cause the motion beam to deflect through electromotive force. A sensing electrode is also provided and detects capacitance between the sensing electrode disposed on the internal surface, and the motion beam. Capacitance changes as the gap between the motion beam and the sensing electrode changes. The amount of deflection is determined by the vacuum level in the sealed enclosure. The vacuum level in the sealed enclosure is thereby sensed by the sensing electrode.
    • 提供了用于感测密封外壳中的真空的真空传感器。 密封的外壳包括希望保持在真空条件下的有源MEMS器件。 真空传感器包括锚定在密封外壳中的内表面的运动梁。 驱动电极设置在运动光束下方,并且提供偏压以使运动光束通过电动势偏转。 还提供感测电极并且检测设置在内表面上的感测电极与运动光束之间的电容。 电容随着运动光束与感应电极之间的间隙而变化。 偏转量由密封外壳中的真空度决定。 因此,密封外壳中的真空度由感测电极感测。