公开(公告)号：US20070269667A1

公开(公告)日：2007-11-22

申请号：US11837000

申请日：2007-08-10

申请人： Shozo KOBAYASHI ,  Hiromitsu HONGO ,  Koichi HAYASHI

发明人： Shozo KOBAYASHI ,  Hiromitsu HONGO ,  Koichi HAYASHI

IPC分类号： B32B15/04

CPC分类号： H01L41/0838 ,  H01L41/0471

摘要： A monolithic piezoelectric element includes a stack, and the stack includes a crack-forming conductive layer arranged to intentionally form a small crack in the stack. The small crack alleviates stress, thereby preventing the occurrence of a large crack that may extend to the piezoelectrically active region.

摘要翻译： 一个单片压电元件包括​​一个叠层，堆叠包括一个裂缝形成导电层，它有意地在叠层中形成一个小裂纹。 小裂纹减轻应力，从而防止可能延伸到压电有源区的大裂纹的发生。

公开(公告)号：US20090152999A1

公开(公告)日：2009-06-18

申请号：US12372114

申请日：2009-02-17

申请人： Shinji OMURA ,  Koichi HAYASHI ,  Shozo KOBAYASHI

发明人： Shinji OMURA ,  Koichi HAYASHI ,  Shozo KOBAYASHI

IPC分类号： H01L41/04 ,  H04R17/00

CPC分类号： H01L41/273 ,  H01L41/0471 ,  H01L41/083 ,  Y10T29/42 ,  Y10T29/435 ,  Y10T29/49128 ,  Y10T29/4913 ,  Y10T29/49155 ,  Y10T29/49169

摘要： In a method for manufacturing a piezoelectric actuator, a ceramic sintered body is prepared and a size of the ceramic sintered body is adjusted in a thickness direction defined below by grinding piezoelectric ceramic layers, included in the ceramic sintered body, located outermost in the thickness direction. In the ceramic sintered body, internal electrodes are each disposed between piezoelectric ceramic layers. The thickness direction is defined as the direction along the thickness of the piezoelectric ceramic layer. Each of the inert sections are disposed on at least one side of the active section, for driving the piezoelectric actuator, in the thickness direction. Dummy internal electrodes are arranged in the inert sections such that each of the dummy internal electrodes are each located between ceramic layers. The thickness of the piezoelectric ceramic layers disposed between the dummy internal electrodes increases with distance from the active section.

摘要翻译： 在制造压电致动器的方法中，制备陶瓷烧结体，并且通过研磨包含在陶瓷烧结体中的厚度方向最外侧的压电陶瓷层来调节陶瓷烧结体的厚度方向 。 在陶瓷烧结体中，内部电极分别配置在压电陶瓷层之间。 厚度方向被定义为沿着压电陶瓷层的厚度的方向。 每个惰性部分设置在有源部分的至少一侧上，用于在厚度方向上驱动压电致动器。 虚拟内部电极布置在惰性部分中，使得每个虚拟内部电极各自位于陶瓷层之间。 设置在虚拟内部电极之间的压电陶瓷层的厚度随着与有源部分的距离而增加。

公开(公告)号：US20070084034A1

公开(公告)日：2007-04-19

申请号：US11610065

申请日：2006-12-13

申请人： Shinji OMURA ,  Koichi HAYASHI ,  Shozo KOBAYASHI

发明人： Shinji OMURA ,  Koichi HAYASHI ,  Shozo KOBAYASHI

IPC分类号： H04R17/00

CPC分类号： H01L41/273 ,  H01L41/0471 ,  H01L41/083 ,  Y10T29/42 ,  Y10T29/435 ,  Y10T29/49128 ,  Y10T29/4913 ,  Y10T29/49155 ,  Y10T29/49169

摘要： In a method for manufacturing a piezoelectric actuator, a ceramic sintered body is prepared and a size of the ceramic sintered body is adjusted in a thickness direction defined below by grinding piezoelectric ceramic layers, included in the ceramic sintered body, located outermost in the thickness direction. In the ceramic sintered body, internal electrodes are each disposed between piezoelectric ceramic layers. The thickness direction is defined as the direction along the thickness of the piezoelectric ceramic layer. Each of the inert sections are disposed on at least one side of the active section, for driving the piezoelectric actuator, in the thickness direction. Dummy internal electrodes are arranged in the inert sections such that each of the dummy internal electrodes are each located between ceramic layers. The thickness of the piezoelectric ceramic layers disposed between the dummy internal electrodes increases with distance from the active section.

摘要翻译： 在制造压电致动器的方法中，制备陶瓷烧结体，并且通过研磨包含在陶瓷烧结体中的厚度方向最外侧的压电陶瓷层来调节陶瓷烧结体的厚度方向 。 在陶瓷烧结体中，内部电极分别配置在压电陶瓷层之间。 厚度方向被定义为沿着压电陶瓷层的厚度的方向。 每个惰性部分设置在有源部分的至少一侧上，用于在厚度方向上驱动压电致动器。 虚拟内部电极布置在惰性部分中，使得每个虚拟内部电极各自位于陶瓷层之间。 设置在虚拟内部电极之间的压电陶瓷层的厚度随着与有源部分的距离而增加。