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    • 7. 发明公开
    • RESISTIVE MEMS HUMIDITY SENSOR
    • 电阻式微机电传感器
    • EP2984474A1
    • 2016-02-17
    • EP13821548.8
    • 2013-12-17
    • Robert Bosch GmbHFeyh, AndoGraham, AndrewSamarao, AshwinYama, GaryO'Brien, Gary
    • FEYH, AndoGRAHAM, AndrewSAMARAO, AshwinYAMA, GaryO'BRIEN, Gary
    • G01N27/12
    • G01N27/121
    • A semiconductor device includes a substrate, an insulating film provided on a surface of the substrate, and a sensing film formed of a conductive material deposited on top of the insulating film. The sensing film defines at least one conductive path between a first position and a second position on the insulating film. A first circuit connection is electrically connected to the sensing film at the first position on the insulating layer, and a second circuit connection is electrically connected to the sensing film at the second position. A control circuit is operatively connected to the first circuit connection and the second circuit connection for measuring an electrical resistance of the sensing film. The sensing film has a thickness that enables a resistivity of the sensing film to be altered predictably in a manner that is dependent on ambient moisture content.
    • 半导体器件包括衬底,设置在衬底的表面上的绝缘膜和由沉积在绝缘膜的顶部上的导电材料形成的感测膜。 感测膜限定绝缘膜上的第一位置和第二位置之间的至少一个导电路径。 第一电路连接在绝缘层上的第一位置电连接到感测膜,并且第二电路连接在第二位置电连接到感测膜。 控制电路可操作地连接到第一电路连接和用于测量感测膜的电阻的第二电路连接。 感测膜具有能够以取决于环境水分含量的方式预测地改变感测膜的电阻率的厚度。