PIEZOELECTRIC ELEMENT AND STACKED PIEZOELECTRIC STRUCTURE
    10.
    发明申请
    PIEZOELECTRIC ELEMENT AND STACKED PIEZOELECTRIC STRUCTURE 有权
    压电元件和堆叠压电结构

    公开(公告)号:US20130221807A1

    公开(公告)日:2013-08-29

    申请号:US13820465

    申请日:2011-08-22

    IPC分类号: H01L41/047

    摘要: A stacked piezoelectric actuator has a laminate structure including piezoelectric layers and cover parts such that when an external electrode is applied with drive voltage, the piezoelectric layers become distorted and the entire stacked piezoelectric actuator deforms, and at that time, the cover parts become displaced, wherein the distortion difference occurring between the piezoelectric layers and the cover parts reduces, thereby inhibiting the development of cracks. Moreover, the surface area of the active region of the piezoelectric layers is the same as the surface area of the active region of the cover parts, and therefore the loss of the displacement transfer, which is produced by the piezoelectric layers, at the cover parts is reliably reduced.

    摘要翻译: 叠层压电致动器具有包括压电层和覆盖部分的层压结构,使得当外部电极被施加驱动电压时,压电层变形并且整个堆叠压电致动器变形,并且此时盖部件变位, 其中在压电层和盖部之间发生的变形差减小,从而抑制裂纹的发展。 此外,压电层的有源区的表面积与盖部的有源区的表面积相同,因此由压电层产生的位移转移的损失在盖部 可靠地减少。