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MEMS WAFER LEVEL INTEGRATED MEMS DEVICE ENABLED BY SILICON PILLAR AND SMART CAP

机译:通过硅柱和智能电容实现的MEMS晶圆级集成MEMS器件

摘要

The present invention relates to a microelectromechanical systems (MEMS) package and a method for achieving differential pressure adjustment in a plurality of MEMS cavities at a wafer-to-wafer bonding level. A device substrate comprising a first MEMS device and a second MEMS device is bonded to a capping substrate comprising a first recess region and a second recess region. A ventilation trench is laterally spaced apart from the recessed regions and within a second cavity. A sealing structure is disposed within the ventilation trench and forms a vent in fluid communication with the second cavity. A cap is disposed within the vent to seal the second cavity at a second gas pressure different from a first gas pressure of a first cavity.
机译:本发明涉及一种微机电系统(MEMS)封装和一种用于在晶片间键合水平上在多个MEMS腔中实现压差调节的方法。包括第一MEMS器件和第二MEMS器件的器件衬底被结合到包括第一凹陷区域和第二凹陷区域的覆盖衬底。通风沟槽与凹入区域在第二腔内横向间隔开。密封结构设置在通风沟槽内并形成与第二腔流体连通的通风口。盖设置在通风口内以在与第一腔的第一气压不同的第二气压下密封第二腔。

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