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    • 3. 发明申请
    • MULTI-LAYER PIEZOELECTRIC ELEMENT, AND INJECTION DEVICE AND FUEL INJECTION SYSTEM PROVIDED WITH THE SAME
    • 多层压电元件及其注入装置和燃油喷射系统
    • US20150034050A1
    • 2015-02-05
    • US14387875
    • 2013-07-30
    • KYOCERA CORPORATION
    • Ken Yamamoto
    • H01L41/047F02M51/06H01L41/083F02M55/02
    • H01L41/0838F02M51/0603F02M55/025H01L41/0472H01L41/083H01L41/0833H01L41/293
    • A multi-layer piezoelectric element includes: a stacked body comprising an active section, and inactive sections disposed at opposite ends in a stacking direction of the active section; an electrically-conductive bonding material disposed on a side surface of the stacked body from the active section to the inactive sections; and an external electrode plate attached, through the electrically-conductive bonding material, to the side surface of the stacked body, a spacing between a side surface of at least one of the inactive sections and the external electrode plate being wider than a spacing between a side surface of the active section and the external electrode plate, and the electrically-conductive bonding material situated between the side surface of at least one of the inactive sections and the external electrode plate being larger in thickness than the electrically-conductive bonding material situated between the side surface of the active section and the external electrode plate.
    • 层叠型压电元件包括​​:层叠体,其包括有源部,以及设置在所述有源部的堆叠方向的相对端的无效部; 导电接合材料,其设置在所述层叠体的从所述有源部到所述非活性部的侧面; 以及外部电极板,其通过导电接合材料附接到层叠体的侧表面,至少一个非活性部分的侧表面与外部电极板之间的间隔宽于 所述有源部分和所述外部电极板的侧表面和位于至少一个非活性部分和所述外部电极板的侧表面之间的导电接合材料的厚度大于位于所述有源部分之间的导电接合材料 有源部分的侧表面和外部电极板。