公开(公告)号：US20040183396A1

公开(公告)日：2004-09-23

申请号：US10770405

申请日：2004-02-04

申请人： Denso Corporation

发明人： Akio Iwase ,  Tetuji Itou ,  Toshio Ooshima ,  Shige Kadotani

IPC分类号： H02N002/00 ,  H01L041/04

CPC分类号： H01L41/0833 ,  B23K26/0823 ,  B23K26/40 ,  B23K2103/52 ,  H01L41/0472 ,  H01L41/293 ,  H01L41/339 ,  Y10T29/42 ,  Y10T29/43 ,  Y10T29/435 ,  Y10T29/49005 ,  Y10T29/49126 ,  Y10T29/49128 ,  Y10T29/49155

摘要： A lamination-type piezoelectric element (1) comprises: a ceramic laminated body (10) in which ceramic layers and inner electrode layers (12) are alternately laminated on each other; and a pair of outer electrodes (18) respectively joined to a pair of joining faces (15) formed on an outer circumferential face of the ceramic laminated body (10). A belt-shaped outer circumferential groove portion (120) coming into contact with an outer circumferential end portion (127) of at least some part of the inner electrode layers (12) is formed on the outer circumferential face of the ceramic laminated body (10). This outer circumferential groove portion (120) has at least one dent portion (121) protruding from the adjoining portion. The outer circumferential groove portion (120) has at least one of an insulating portion (181) made of insulating material and a conductive portion (183) made of conductive material.

摘要翻译： 层压型压电元件（1）包括：陶瓷层叠体（10），陶瓷层和内部电极层（12）彼此交替层叠; 以及分别与形成在陶瓷层叠体（10）的外周面上的一对接合面（15）接合的一对外部电极（18）。 在陶瓷层叠体（10）的外周面上形成有与内部电极层（12）的至少一部分的外周端部（127）接触的带状的外周侧槽部（120） ）。 该外周槽部（120）具有从邻接部突出的至少一个凹部（121）。 外周槽部（120）具有由绝缘材料构成的绝缘部（181）和由导电性材料制成的导电部（183）中的至少一方。

公开(公告)号：US20040255443A1

公开(公告)日：2004-12-23

申请号：US10858473

申请日：2004-06-02

申请人： DENSO CORPORATION

发明人： Akio Iwase ,  Tetsuji Itou ,  Toshio Ooshima ,  Shige Kadotani

IPC分类号： H04R017/00 ,  H05K003/02

CPC分类号： H01L41/273 ,  H01L41/083 ,  Y10T29/42 ,  Y10T29/435 ,  Y10T29/49126 ,  Y10T29/49155

摘要： This invention is directed to providing a method for producing a stacked piezoelectric element, where grooves can be easily formed on the side face of a stacked body without causing damage. According to the invention, it is provided that a method for producing a stacked piezoelectric element by alternately stacking a piezoelectric layer and an inner electrode layer, comprising: a green sheet production step of producing a green sheet 110 for base, which constitutes a part of the piezoelectric layer; a unit body formation step of forming a unit body 3 having a narrow stacked part 30 where a narrow piezoelectric material layer 115, which constitutes a part of the piezoelectric layer, having an area smaller than the green sheet 110 for base and an electrode material layer 20, which constitutes the inner electrode layer, having an area smaller than the green sheet 110 for base are stacked, the unit body being formed by disposing the narrow stacked part 30 on the green sheet 110 for base; a stacked body formation step of forming a stacked body having groove parts by stacking a plurality of the unit bodies 3, the groove part having the bottom being defined by the side face of the narrow stacked part 30; and a firing step of firing the stacked body.

摘要翻译： 本发明的目的在于提供一种堆叠式压电元件的制造方法，其中可以容易地在堆叠体的侧面上形成槽而不会造成损坏。 根据本发明，提供了一种通过交替堆叠压电层和内部电极层来制造叠层压电元件的方法，包括：生坯基片的生片，其生成基片的生片110 压电层; 单元体形成步骤，形成具有窄堆叠部分30的单元体3，其中构成压电层的一部分的窄压电材料层115的面积小于用于基底的生片110的面积和电极材料层 如图20所示，构成内部电极层的区域小于用于基底的生片110的面积，通过将窄层叠部30设置在用于基底的生片110上而形成单位体; 层叠体形成步骤，通过堆叠多个单位体3形成具有沟槽部分的层叠体，所述槽部具有由窄层叠部30的侧面限定的底部; 以及烧结层叠体的烧成工序。