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    • 4. 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。
    • 5. 发明授权
    • Stacked piezoelectric element and method of fabrication thereof
    • 堆叠式压电元件及其制造方法
    • US07294953B2
    • 2007-11-13
    • US11312487
    • 2005-12-21
    • Akio IwaseShige KadotaniTetsuji Itou
    • Akio IwaseShige KadotaniTetsuji Itou
    • H01L41/083H01L41/047
    • H01L41/0472H01L41/0471H01L41/0833H01L41/273H01L41/293H01L41/297
    • This invention provides a stacked piezoelectric element that has excellent durability and reliability by ensuring reliable electrical conduction between internal electrode layer and conductive adhesive, and a method of fabricating such a stacked piezoelectric element, wherein the stacked piezoelectric element 1 comprises: a ceramic stack 10 constructed by alternately stacking piezoelectric layers 11 made of a piezoelectric material and internal electrode layers 21, 22 having electrical conductivity; and external electrodes 32 bonded to the side faces 101 and 102 of the ceramic stack 10 via an electrically conductive adhesive 31. The side faces 101 and 102 of the ceramic stack 10 are provided with electrode recesses 23 each formed by indenting a portion of the edge of each of the internal electrode layers 21, 22 in the stacking direction thereof thereby forming a gap between it and the overlying piezoelectric layer 11, and the conductive adhesive 31 is applied so as to enter the electrode recesses 23 from the side faces 101 and 102 of the ceramic stack 10.
    • 本发明提供一种通过确保内部电极层与导电性粘合剂之间的可靠的电导率而具有优异的耐久性和可靠性的叠层式压电元件,以及制造这样的叠层型压电元件的方法,其中层压型压电元件1包括:构造的陶瓷叠层10 通过交替堆叠由压电材料制成的压电层11和具有导电性的内部电极层21,22; 外部电极32通过导电性粘接剂31与陶瓷叠层10的侧面101,102接合。 陶瓷堆叠10的侧面101和102设置有电极凹槽23,每个电极凹槽23通过在其堆叠方向上压缩每个内部电极层21,22的边缘的一部分而形成,从而在其与上覆层之间形成间隙 压电层11和导电粘合剂31被施加以从陶瓷堆叠10的侧面101和102进入电极凹部23。
    • 7. 发明申请
    • Stacked piezoelectric element and method of fabrication thereof
    • 堆叠式压电元件及其制造方法
    • US20060138908A1
    • 2006-06-29
    • US11312487
    • 2005-12-21
    • Akio IwaseShige KadotaniTetsuji Itou
    • Akio IwaseShige KadotaniTetsuji Itou
    • H01L41/083
    • H01L41/0472H01L41/0471H01L41/0833H01L41/273H01L41/293H01L41/297
    • This invention provides a stacked piezoelectric element that has excellent durability and reliability by ensuring reliable electrical conduction between internal electrode layer and conductive adhesive, and a method of fabricating such a stacked piezoelectric element. The stacked piezoelectric element 1 comprises: a ceramic stack 10 constructed by alternately stacking piezoelectric layers 11 made of a piezoelectric material and internal electrode layers 21, 22 having electrical conductivity; and external electrodes 32 bonded to the side faces 101 and 102 of the ceramic stack 10 via an electrically conductive adhesive 31. The side faces 101 and 102 of the ceramic stack 10 are provided with electrode recesses 23 each formed by indenting a portion of the edge of each of the internal electrode layers 21, 22 in the stacking direction thereof thereby forming a gap between it and the overlying piezoelectric layer 11, and the conductive adhesive 31 is applied so as to enter the electrode recesses 23 from the side faces 101 and 102 of the ceramic stack 10.
    • 本发明提供一种通过确保内部电极层和导电粘合剂之间可靠的电导率而具有优异的耐久性和可靠性的堆叠式压电元件,以及制造这种叠层型压电元件的方法。 堆叠式压电元件1包括:通过交替堆叠由压电材料制成的压电层11和具有导电性的内部电极层21,22构成的陶瓷叠层10。 和经由导电粘合剂31结合到陶瓷堆叠10的侧面101和102的外部电极32.陶瓷堆叠10的侧面101和102设置有电极凹槽23,每个电极凹槽23通过将边缘的一部分 在层叠方向上形成内部电极层21,22的层叠方向,从而在其与覆盖压电层11之间形成间隙,并且从侧面101和102进入电极凹部23的导电性粘合剂31 的陶瓷叠层10。
    • 8. 发明申请
    • Hollow laminated piezoelectric element and its manufacturing method
    • 中空层压压电元件及其制造方法
    • US20060119220A1
    • 2006-06-08
    • US11294690
    • 2005-12-05
    • Akio IwaseShige KadotaniTetsuji Itou
    • Akio IwaseShige KadotaniTetsuji Itou
    • H01L41/083
    • 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。
    • 10. 发明申请
    • Stacked piezoelectric element, production method thereof and electrically conducting adhesive
    • 堆叠压电元件,其制造方法和导电粘合剂
    • US20060043841A1
    • 2006-03-02
    • US11212563
    • 2005-08-29
    • Shige KadotaniAkio Iwase
    • Shige KadotaniAkio Iwase
    • H01L41/083
    • H01L41/0472H01L41/0477H01L41/0833H01L41/293
    • An object of the present invention is to provide a stacked piezoelectric element with excellent reliability and durability, a production method thereof and an electrically conducting adhesive. A stacked piezoelectric element comprising a ceramic stack obtained by alternately stacking a piezoelectric layer comprising a piezoelectric material and an internal electrode layer having electrical conductivity, and an electrically conducting adhesive layer provided to allow for electrical conduction to said internal electrode layer of the same polarity on the side surface of said ceramic stack, wherein said electrically conducting adhesive layer comprises a base resin having dispersed therein an electrically conducting filler and microparticles, and the boundary between said microparticle and said base resin is in a state that a void is formed at least in a part between those two members or in a state that when said base resin is elongated, a void can be formed between those two members.
    • 本发明的目的是提供一种具有优异的可靠性和耐久性的堆叠式压电元件及其制造方法和导电粘合剂。 一种堆叠式压电元件,包括通过交替堆叠包括压电材料的压电层和具有导电性的内部电极层而获得的陶瓷叠层,以及导电粘合剂层,其设置成允许对所述内部电极层的导电具有相同的极性 所述陶瓷堆叠的侧表面,其中所述导电粘合剂层包括其中分散有导电填料和微粒的基础树脂,并且所述微粒和所述基础树脂之间的边界处于至少形成空隙的状态 这两个构件之间的部分或者当所述基础树脂伸长时,可以在这两个构件之间形成空隙。