公开(公告)号：US09406861B2

公开(公告)日：2016-08-02

申请号：US13969759

申请日：2013-08-19

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki Ukai ,  Shungo Kanai ,  Hiroyuki Hayashi

IPC: H01L41/083 ,  H01L41/047 ,  F04B43/04 ,  H01L41/09

CPC classification number: H01L41/0472 ,  F04B43/046 ,  H01L41/0471 ,  H01L41/0474 ,  H01L41/0475 ,  H01L41/083 ,  H01L41/0973

Abstract: A piezoelectric element, which is capable of being driven with a relatively low voltage and obtaining a large displacement amount at a central portion thereof and is not degraded in characteristics over time and is easily mountable on or in a piezoelectric device, includes a piezoelectric body including a plurality of laminated piezoelectric layers, ground electrodes, central electrodes, and peripheral electrodes. A surface of the piezoelectric body includes first to fifth terminals. The extraction of the ground terminals, the central electrodes, and the peripheral electrodes to the first to fifth terminals is configured to connect one terminal of an alternating-current power supply to the third terminal and connect the other terminal of the alternating-current power supply to the first terminal and the second terminal.

Abstract translation: 一种压电元件，其能够以相对低的电压被驱动并且在其中心部分获得大的位移量，并且随时间而不劣化特性，并且易于安装在压电器件上或其中，包括压电体，包括： 多个层压压电层，接地电极，中心电极和外围电极。 压电体的表面包括第一至第五端子。 将接地端子，中心电极和周边电极提取到第一至第五端子被配置为将交流电源的一个端子连接到第三端子，并将交流电源的另一端子 到第一终端和第二终端。