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    Piezoelectric transformer
    1.
    发明授权
    Piezoelectric transformer 有权

    公开(公告)号：US11195984B2

    公开(公告)日：2021-12-07

    申请号：US16243171

    申请日：2019-01-09

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Shinsuke Ikeuchi ,  Yoichi Mochida ,  Kansho Yamamoto ,  Takuo Hada ,  Hideya Horiuchi

    IPC: H01L41/107 ,  H01L41/187 ,  H01L41/047 ,  H01L41/053 ,  H01L41/293 ,  H01L41/314 ,  H01L41/318 ,  H01L41/332

    Abstract: A piezoelectric transformer that includes a base and an upper layer supported by the base. The upper layer includes a first piezoelectric layer that includes the portion of the upper layer that is interposed between an output electrode and an intermediate electrode, and a second piezoelectric layer that is superposed with the first piezoelectric layer and includes the portion of the upper layer interposed between the intermediate electrode and an input electrode in at least n vibration portions. Moreover, the input electrode includes multiple input electrode pieces and the output electrode includes multiple output electrode pieces. In addition, wiring lines are routed such that voltages of opposite phases can be respectively applied to a first input electrode piece group and a second input electrode piece group with the potential of the intermediate electrode serving as a reference.

    Piezoelectric device
    5.
    发明授权
    Piezoelectric device 有权

    公开(公告)号：US10593860B2

    公开(公告)日：2020-03-17

    申请号：US15355369

    申请日：2016-11-18

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Takao Mouri ,  Kansho Yamamoto

    IPC: H01L41/047 ,  H01L41/09 ,  H01L41/04 ,  H01L41/113 ,  H01L41/18 ,  H04R17/00 ,  H04R17/02

    Abstract: A piezoelectric device that includes a substrate defining an opening therein; a piezoelectric layer arranged above the substrate such that at least part of the piezoelectric layer extends over the opening and forms a membrane part that is not superimposed with the substrate; a lower electrode arranged below the piezoelectric layer in at least the membrane part; and an upper electrode that is arranged above the piezoelectric layer so as to face at least part of the lower electrode with the piezoelectric layer interposed therebetween in the membrane part. A heater is arranged above the piezoelectric layer so as to be separate from the upper electrode or at least part of the upper electrode doubles as a heater.

    Electroacoustic transducer
    6.
    发明授权
    Electroacoustic transducer 有权

    公开(公告)号：US10536779B2

    公开(公告)日：2020-01-14

    申请号：US16205264

    申请日：2018-11-30

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Shunsuke Kitamura ,  Kansho Yamamoto ,  Takao Mouri ,  Takuo Hada

    IPC: H04R17/00 ,  H04R19/00 ,  B81B7/00 ,  B06B1/06 ,  H04R3/00 ,  H04R7/04

    Abstract: An electroacoustic transducer includes an ultrasonic element that includes a diaphragm and a support frame, a case body that accommodates the ultrasonic element, and fixing portions that join the support frame portion to a bottom plate portion of the case body. First and second main surfaces of the diaphragm face top and bottom plate portions of the case body, respectively, and a sound hole is provided in the case body. The fixing portions are partially provided along the circumferential direction of the support frame such that a space between the second main surface and the bottom plate portion communicates with a space around the ultrasonic element, and an acoustic path connecting the first main surface and the second main surface and the sound hole is provided in the case body. The fixing portions are defined by a die bonding agent including spherical spacers.

    PIEZOELECTRIC TRANSFORMER
    7.
    发明申请
    PIEZOELECTRIC TRANSFORMER 审中-公开

    公开(公告)号：US20190148619A1

    公开(公告)日：2019-05-16

    申请号：US16243171

    申请日：2019-01-09

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Shinsuke Ikeuchi ,  Yoichi Mochida ,  Kansho Yamamoto ,  Takuo Hada ,  Hideya Horiuchi

    IPC: H01L41/107 ,  H01L41/047 ,  H01L41/053

    Abstract: A piezoelectric transformer that includes a base and an upper layer supported by the base. The upper layer includes a first piezoelectric layer that includes the portion of the upper layer that is interposed between an output electrode and an intermediate electrode, and a second piezoelectric layer that is superposed with the first piezoelectric layer and includes the portion of the upper layer interposed between the intermediate electrode and an input electrode in at least n vibration portions. Moreover, the input electrode includes multiple input electrode pieces and the output electrode includes multiple output electrode pieces. In addition, wiring lines are routed such that voltages of opposite phases can be respectively applied to a first input electrode piece group and a second input electrode piece group with the potential of the intermediate electrode serving as a reference.

    PIEZOELECTRIC DEVICE
    8.
    发明申请
    PIEZOELECTRIC DEVICE 审中-公开
    压电器件

    公开(公告)号：US20170069821A1

    公开(公告)日：2017-03-09

    申请号：US15355369

    申请日：2016-11-18

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： TAKAO MOURI ,  Kansho Yamamoto

    IPC: H01L41/047 ,  H01L41/18 ,  H01L41/113 ,  H01L41/09

    Abstract: A piezoelectric device that includes a substrate defining an opening therein; a piezoelectric layer arranged above the substrate such that at least part of the piezoelectric layer extends over the opening and forms a membrane part that is not superimposed with the substrate; a lower electrode arranged below the piezoelectric layer in at least the membrane part; and an upper electrode that is arranged above the piezoelectric layer so as to face at least part of the lower electrode with the piezoelectric layer interposed therebetween in the membrane part. A heater is arranged above the piezoelectric layer so as to be separate from the upper electrode or at least part of the upper electrode doubles as a heater.

    Abstract translation: 一种包括在其中限定开口的基板的压电装置; 压电层，其布置在所述基板上方，使得所述压电层的至少一部分在所述开口上延伸并形成不与所述基板叠置的膜部分; 在至少所述膜部分中布置在所述压电层下方的下电极; 以及上部电极，其布置在所述压电层的上方，以便在所述膜部分中与所述压电层插入所述下部电极的至少一部分。 在压电体层的上方配置有加热器，与上部电极分离，或者上部电极的至少一部分加热。

    PIEZOELECTRIC TRANSFORMER
    9.
    发明申请
    PIEZOELECTRIC TRANSFORMER 审中-公开

    公开(公告)号：US20190172996A1

    公开(公告)日：2019-06-06

    申请号：US16273191

    申请日：2019-02-12

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Shinsuke Ikeuchi ,  Yoichi Mochida ,  Kansho Yamamoto ,  Takuo Hada ,  Hideya Horiuchi

    IPC: H01L41/257 ,  H01L41/107 ,  H01L41/047 ,  H01L41/083 ,  H01L41/29

    Abstract: A piezoelectric transformer that includes a vibration portion assembly having an output electrode, an output-side intermediate electrode, an input-side intermediate electrode, and an input electrode. The vibration portion assembly includes n vibration portions. The input electrode includes one to n input electrode pieces. The output electrode includes one to n output electrode pieces. Wiring lines are arranged such that voltages of opposite phases can be respectively applied to a first input electrode piece group of the input electrode pieces corresponding to odd-numbered vibration portions, and a second input electrode piece group of the input electrode pieces corresponding to even-numbered vibration portions. The second output electrode piece and the first output-side intermediate electrode piece are superposed with each other in the thickness direction. The first output electrode piece is not superposed with either of the first and second output-side intermediate electrode pieces in the thickness direction.

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