FLOW RATE SENSOR
    2.
    发明申请
    FLOW RATE SENSOR 审中-公开

    公开(公告)号:US20190154484A1

    公开(公告)日:2019-05-23

    申请号:US15759570

    申请日:2016-09-23

    摘要: A disclosed flow rate sensor (1) has a heat element (40) and a plurality of temperature detectors (30 through 33), and in a state in which the heat element (40) generates heat, a flow rate of a fluid flowing on the temperature detectors (30 through 33) is detected, based on temperature detection results of each of the temperature detectors (30 through 33). The flow rate sensor includes a semiconductor substrate having a frame shape with an opening, a diaphragm part (20) provided on the semiconductor substrate, and the heat element (40) and the plurality of temperature detectors (30 through 33) provided on the diaphragm part (20). The diaphragm part (20) has a thin film structure part (20t) that covers the opening, and in a plan view, the plurality of temperature detectors (30 through 33) are arranged in a periphery of the heat element (40).