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    • 4. 发明授权
    • Laminated-type piezoelectric element and a manufacturing method thereof
    • 层压型压电元件及其制造方法
    • US07309945B2
    • 2007-12-18
    • US11046699
    • 2005-02-01
    • Akio IwaseTetsuji ItoToshio OoshimaShige Kadotani
    • Akio IwaseTetsuji ItoToshio OoshimaShige Kadotani
    • H01L41/04H01L41/047
    • H01L41/273H01L41/0838
    • The invention provides a laminate-type piezoelectric element comprising a ceramic laminate 10 with ceramic layers 11 and internal electrode layers 12 respectively stacked alternately, and a pair of external electrodes respectively connecting with a pair of connecting areas 15 formed at an outer peripheral area of the ceramic laminate 10. The internal electrode layer comprises an internal electrode part 120 with electric conductivity, and a non-pole part 120 where the internal electrode part 120 does not exist at the inside near an outer peripheral area. The ceramic laminate 10 comprises stress relaxation parts 13 able to modify more easily their shapes than the ceramic layers 11, along at least a part of said internal electrode layers. This stress relaxation part 13 is placed so as to overlap with the non-pole part 129 of either of the internal electrode layers 12, in a stacking direction of the ceramic laminate 10.
    • 本发明提供一种叠层型压电元件,其包括具有陶瓷层11和分别层叠的内部电极层12的陶瓷层叠体10,以及一对外部电极,分别与形成在该外部区域的外部区域的一对连接区域15连接。 陶瓷层压板10。 内部电极层包括具有导电性的内部电极部分120和内部电极部分120在外围区域附近不存在的非极性部分120。 陶瓷层压体10包括能够沿着至少一部分内部电极层更容易地改变陶瓷层11的形状的应力松弛部分13。 在陶瓷层叠体10的层叠方向上,将该应力松弛部13配置成与内部电极层12的非极性部129重叠。
    • 5. 发明申请
    • Laminated-type piezoelectric element and a manufacturing method thereof
    • 层压型压电元件及其制造方法
    • US20050168106A1
    • 2005-08-04
    • US11046699
    • 2005-02-01
    • Akio IwaseTetsuji ItoToshio OoshimaShige Kadotani
    • Akio IwaseTetsuji ItoToshio OoshimaShige Kadotani
    • H01L41/083H01L41/187H01L41/22H01L41/273H01L41/297H01L41/339H01L41/43
    • H01L41/273H01L41/0838
    • The invention provides a laminate-type piezoelectric element comprising a ceramic laminate 10 with ceramic layers 11 and internal electrode layers 12 respectively stacked alternately, and a pair of external electrodes respectively connecting with a pair of connecting areas 15 formed at an outer peripheral area of the ceramic laminate 10. The internal electrode layer comprises an internal electrode part 120 with electric conductivity, and a non-pole part 120 where the internal electrode part 120 does not exist at the inside near an outer peripheral area. The ceramic laminate 10 comprises stress relaxation parts 13 able to modify more easily their shapes than the ceramic layers 11, along at least a part of said internal electrode layers. This stress relaxation part 13 is placed so as to overlap with the non-pole part 129 of either of the internal electrode layers 12, in a stacking direction of the ceramic laminate 10.
    • 本发明提供一种叠层型压电元件,其包括具有陶瓷层11和分别层叠的内部电极层12的陶瓷层叠体10,以及一对外部电极,分别与形成在该外部区域的外部区域的一对连接区域15连接。 陶瓷层压板10。 内部电极层包括具有导电性的内部电极部分120和内部电极部分120在外围区域附近不存在的非极性部分120。 陶瓷层压体10包括能够沿着至少一部分内部电极层更容易地改变陶瓷层11的形状的应力松弛部分13。 在陶瓷层叠体10的层叠方向上,将该应力松弛部13配置成与内部电极层12的非极性部129重叠。
    • 10. 发明授权
    • Hollow laminated piezoelectric element and its manufacturing method
    • 中空层压压电元件及其制造方法
    • US07411336B2
    • 2008-08-12
    • US11294690
    • 2005-12-05
    • Akio IwaseShige KadotaniTetsuji Itou
    • Akio IwaseShige KadotaniTetsuji Itou
    • H01L41/08
    • H01L41/0838F02M51/0603F02M61/168F02M2200/80F02M2200/9007F02M2200/9038F02M2200/9046F02M2200/9053H01L41/0835H01L41/273H01L41/339
    • A hollow laminated piezoelectric element having excellent durability and reliability and capable of obtaining a high output, and a method of manufacturing the hollow laminated piezoelectric element are provided. A hollow laminated piezoelectric element 1 comprises a ceramic laminate 10 that is formed by having alternately laminated piezoelectric layers 11 made of a piezoelectric material and internal electrode layers 21 and 22 having conductivity and by having a center through hole 14 formed to pass through the ceramic laminate 10 along a lamination direction. The ceramic laminate 10 has an internally terminated structure in the inside periphery having at least a portion of inside peripheral ends of the internal electrode layers 21 and 22 terminated within the ceramic laminate 10 so that at least a portion of the inside peripheral ends of the internal electrode layers 21 and 22 is not exposed to the inside peripheral surface 104 of the ceramic laminate 10. The inside peripheral surface 104 of the ceramic laminate 10 has inside peripheral slits 13 having trenches provided in the peripheral direction toward the inside of the piezoelectric layers 11 from the inside peripheral surface 104.
    • 提供具有优异的耐久性和可靠性并能够获得高输出的中空层压压电元件,以及制造中空层叠压电元件的方法。 中空层压压电元件1包括陶瓷层压体10,其通过具有由压电材料制成的交替层压的压电层11和具有导电性的内部电极层21和22以及形成为穿过陶瓷层压体的中心通孔14形成 10沿着层叠方向。 陶瓷层叠体10在内周部具有内部端接的结构,内部电极层21,22的内周端部的至少一部分终止于陶瓷层叠体10内,使内部的内周侧端部的至少一部分 电极层21,22不暴露于陶瓷层叠体10的内周面104。 陶瓷层叠体10的内周面104具有从内周面104朝向压电体层11的内侧设置有沟槽的内周狭缝13。