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    • 10. 发明授权
    • Hybrid MEMS bump design to prevent in-process and in-use stiction
    • 混合MEMS凸块设计,以防止在进程和使用中的粘滞
    • US08723280B2
    • 2014-05-13
    • US13563935
    • 2012-08-01
    • Chia-Pao ShuWen-Chuan TaiChia-Ming HungHsiang-Fu Chen
    • Chia-Pao ShuWen-Chuan TaiChia-Ming HungHsiang-Fu Chen
    • H01L29/82
    • B81C1/00015B81B3/00B81B3/001B81B7/02B81C99/00H01L29/84
    • A micro-electro-mechanical systems (MEMS) device and method for forming a MEMS device is provided. A proof mass is suspended a distance above a surface of a substrate by a fulcrum. A pair of sensing plates are positioned on the substrate on opposing sides of the fulcrum. Metal bumps are associated with each sensing plate and positioned near a respective distal end of the proof mass. Each metal bump extends from the surface of the substrate and generally inhibits charge-induced stiction associated with the proof mass. Oxide bumps are associated with each of the pair of sensing plates and positioned between the respective sensing plate and the fulcrum. Each oxide bump extends from the first surface of the substrate a greater distance than the metal bumps and acts as a shock absorber by preventing the distal ends of the proof mass from contacting the metal bumps during shock loading.
    • 提供了一种用于形成MEMS器件的微电子机械系统(MEMS)器件和方法。 通过支点将检测质量悬挂在基板的表面上方的距离处。 一对感测板位于支撑体的相对侧上的基板上。 金属凸块与每个感测板相关联并且定位在检验质量块的相应远端附近。 每个金属凸起从衬底的表面延伸,并且通常抑制与校准质量相关联的电荷诱导的静电。 氧化物凸块与一对感测板中的每一个相关联并且位于相应的感测板和支点之间。 每个氧化物凸块从衬底的第一表面延伸出比金属凸块更大的距离,并且通过在冲击载荷期间防止校准质量块的远端接触金属凸块而用作减震器。