ULTRASONIC TRANSDUCER, METHOD OF PRODUCING SAME, AND ULTRASONIC PROBE USING SAME
    138.
    发明申请
    ULTRASONIC TRANSDUCER, METHOD OF PRODUCING SAME, AND ULTRASONIC PROBE USING SAME 有权
    超声波传感器,其制造方法和使用其的超声波探头

    公开(公告)号:US20160008849A1

    公开(公告)日:2016-01-14

    申请号:US14799632

    申请日:2015-07-15

    Abstract: Disclosed is an ultrasonic transducer that is provided with: a bottom electrode; an electric connection part which is connected to the bottom electrode from the bottom of the bottom electrode; a first insulating film which is formed so as to cover the bottom electrode; a cavity which is formed on the first insulating film so as to overlap the bottom electrode when seen from above; a second insulating film which is formed so as to cover the cavity; and a top electrode which is formed on the second insulating film so as to overlap the cavity when seen from above. The electric connection part to the bottom electrode is positioned so as to not overlap the cavity when seen from above.

    Abstract translation: 公开了一种超声波换能器,其具备:底部电极; 电连接部,其从所述底部电极的底部连接到所述底部电极; 形成为覆盖底部电极的第一绝缘膜; 形成在第一绝缘膜上以便从上方观察时与底部电极重叠的空腔; 形成为覆盖空腔的第二绝缘膜; 以及形成在第二绝缘膜上以从上方观察时与空腔重叠的顶部电极。 位于底部电极的电连接部分被定位为当从上方观察时不与腔体重叠。

    Method of manufacturing MEMS sensor and MEMS sensor
    140.
    发明授权
    Method of manufacturing MEMS sensor and MEMS sensor 有权
    制造MEMS传感器和MEMS传感器的方法

    公开(公告)号:US08174085B2

    公开(公告)日:2012-05-08

    申请号:US12580052

    申请日:2009-10-15

    Applicant: Goro Nakatani

    Inventor: Goro Nakatani

    Abstract: A method of manufacturing an MEMS sensor according to the present invention includes the steps of: forming a first sacrificial layer on one surface of a substrate; forming a lower electrode on the first sacrificial layer; forming a second sacrificial layer made of a metallic material on the first sacrificial layer to cover the lower electrode; forming an upper electrode made of a metallic material on the second sacrificial layer; forming a protective film made of a nonmetallic material on the substrate to collectively cover the first sacrificial layer, the second sacrificial layer and the upper electrode; and removing at least the second sacrificial layer by forming a through-hole in the protective film and supplying an etchant to the inner side of the protective film through the through-hole.

    Abstract translation: 根据本发明的MEMS传感器的制造方法包括以下步骤:在衬底的一个表面上形成第一牺牲层; 在所述第一牺牲层上形成下电极; 在所述第一牺牲层上形成由金属材料制成的第二牺牲层以覆盖所述下电极; 在所述第二牺牲层上形成由金属材料制成的上电极; 在所述基板上形成由非金属材料制成的保护膜,以共同覆盖所述第一牺牲层,所述第二牺牲层和所述上电极; 以及通过在所述保护膜中形成通孔并且通过所述通孔向所述保护膜的内侧供给蚀刻剂,至少去除所述第二牺牲层。

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