公开(公告)号：US20080303385A1

公开(公告)日：2008-12-11

申请号：US12191191

申请日：2008-08-13

申请人： Takeshi Okamura ,  Katsushi Sakaue ,  Mitsuo Kondo

发明人： Takeshi Okamura ,  Katsushi Sakaue ,  Mitsuo Kondo

IPC分类号： H01L41/047

CPC分类号： H01L41/1876 ,  F02M51/0603 ,  F02M61/167 ,  H01L41/0471 ,  H01L41/0472 ,  H01L41/0477

摘要： To provide a multi-layer piezoelectric device having excellent durability in which the amount of displacement does not change even when the piezoelectric actuator is subjected to continuous operation over a long period of time under a high voltage and a high pressure, the multi-layer piezoelectric device comprises a stack formed by stacking piezoelectric layers and internal electrodes alternately one on another and external electrodes formed on a first side face and on a second side face of the stack, wherein one of the adjacent internal electrodes is connected to the external electrode formed on the first side face and the other internal electrode is connected to the external electrode formed on the second side face, while content of alkali metal in a range from 5 ppm to 300 ppm is contained.

摘要翻译： 为了提供即使在压电致动器在高电压和高压下长时间连续操作的情况下，位移量也不会改变的耐久性优异的层叠型压电元件，则层叠型压电体 器件包括通过将压电层和内部电极彼此交替堆叠而形成的堆叠和形成在堆叠的第一侧面和第二侧面上的外部电极，其中相邻的内部电极中的一个连接到形成在其上的外部电极 第一侧面和另一个内部电极连接到形成在第二侧面上的外部电极，同时含有5ppm至300ppm范围内的碱金属含量。

公开(公告)号：US20070205700A1

公开(公告)日：2007-09-06

申请号：US10573339

申请日：2004-09-22

申请人： Takeshi Okamura ,  Katsushi Sakaue ,  Mitsuo Kondo

发明人： Takeshi Okamura ,  Katsushi Sakaue ,  Mitsuo Kondo

IPC分类号： H01L41/083

CPC分类号： H01L41/1876 ,  F02M51/0603 ,  F02M61/167 ,  H01L41/0471 ,  H01L41/0472 ,  H01L41/0477

摘要： To provide a multi-layer piezoelectric device having excellent durability in which the amount of displacement does not change even when the piezoelectric actuator is subjected to continuous operation over a long period of time under a high voltage and a high pressure, the multi-layer piezoelectric device comprises a stack formed by stacking piezoelectric layers and internal electrodes alternately one on another and external electrodes formed on a first side face and on a second side face of the stack, wherein one of the adjacent internal electrodes is connected to the external electrode formed on the first side face and the other internal electrode is connected to the external electrode formed on the second side face, while content of alkali metal in a range from 5 ppm to 300 ppm is contained.

摘要翻译： 为了提供即使在压电致动器在高电压和高压下长时间连续操作的情况下，位移量也不会改变的耐久性优异的层叠型压电元件，则层叠型压电体 器件包括通过将压电层和内部电极彼此交替堆叠而形成的堆叠和形成在堆叠的第一侧面和第二侧面上的外部电极，其中相邻的内部电极中的一个连接到形成在其上的外部电极 第一侧面和另一个内部电极连接到形成在第二侧面上的外部电极，同时含有5ppm至300ppm范围内的碱金属含量。

公开(公告)号：US20100156250A1

公开(公告)日：2010-06-24

申请号：US12717018

申请日：2010-03-03

申请人： Mitsuo Kondo ,  Masaki Terazono ,  Takeshi Okamura ,  Katsushi Sakaue

发明人： Mitsuo Kondo ,  Masaki Terazono ,  Takeshi Okamura ,  Katsushi Sakaue

IPC分类号： H01L41/16 ,  H01L41/047

CPC分类号： H01L41/0472 ,  H01L41/0471 ,  H01L41/0477 ,  H01L41/273 ,  Y10T29/42

摘要： A multi-layer piezoelectric element having high durability which allows it to increase the amount of displacement of a piezoelectric actuator under high voltage and high pressure and does not undergo a change in the amount of displacement during continuous operation in a high electric field and under a high pressure over a long time period is provided.The multi-layer piezoelectric element comprises a stack of at least one piezoelectric layer and a plurality of internal electrodes consisting of first and second internal electrodes placed one on another, a first external electrode formed on a first side face of the stack and connected to the first internal electrode and a second external electrode formed on a second side face of the stack and connected to the second internal electrode, wherein the bonding strength between the piezoelectric layer and the internal electrode is weaker than the bending strength of the piezoelectric layer.

摘要翻译： 一种具有高耐久性的多层压电元件，其能够在高电压和高压下增加压电致动器的位移量，并且在高电场和在高电压下连续操作期间不会发生位移量变化 提供了长时间的高压。 所述层叠型压电元件包括​​由至少一个压电体层叠的多个内部电极和由彼此重叠的第一和第二内部电极组成的多个内部电极，形成在所述堆叠体的第一侧面上的第一外部电极， 第一内部电极和第二外部电极，形成在所述堆叠的第二侧面上并与所述第二内部电极连接，其中所述压电层和所述内部电极之间的接合强度弱于所述压电层的弯曲强度。

公开(公告)号：US20090045701A1

公开(公告)日：2009-02-19

申请号：US12191168

申请日：2008-08-13

申请人： Takeshi Okamura ,  Katsushi Sakaue ,  Mitsuo Kondo

发明人： Takeshi Okamura ,  Katsushi Sakaue ,  Mitsuo Kondo

IPC分类号： H01L41/083

CPC分类号： H01L41/1876 ,  F02M51/0603 ,  F02M61/167 ,  H01L41/0471 ,  H01L41/0472 ,  H01L41/0477

摘要： To provide a multi-layer piezoelectric device having excellent durability in which the amount of displacement does not change even when the piezoelectric actuator is subjected to continuous operation over a long period of time under a high voltage and a high pressure, the multi-layer piezoelectric device comprises a stack formed by stacking piezoelectric layers and internal electrodes alternately one on another and external electrodes formed on a first side face and on a second side face of the stack, wherein one of the adjacent internal electrodes is connected to the external electrode formed on the first side face and the other internal electrode is connected to the external electrode formed on the second side face, while content of alkali metal in a range from 5 ppm to 300 ppm is contained.

摘要翻译： 为了提供即使在压电致动器在高电压和高压下长时间连续操作的情况下，位移量也不会改变的耐久性优异的层叠型压电元件，则层叠型压电体 器件包括通过将压电层和内部电极彼此交替堆叠而形成的堆叠和形成在堆叠的第一侧面和第二侧面上的外部电极，其中相邻的内部电极中的一个连接到形成在其上的外部电极 第一侧面和另一个内部电极连接到形成在第二侧面上的外部电极，同时含有5ppm至300ppm范围内的碱金属含量。

公开(公告)号：US07902726B2

公开(公告)日：2011-03-08

申请号：US12191168

申请日：2008-08-13

申请人： Takeshi Okamura ,  Katsushi Sakaue ,  Mitsuo Kondo

发明人： Takeshi Okamura ,  Katsushi Sakaue ,  Mitsuo Kondo

IPC分类号： H01L41/08

CPC分类号： H01L41/1876 ,  F02M51/0603 ,  F02M61/167 ,  H01L41/0471 ,  H01L41/0472 ,  H01L41/0477

摘要： To provide a multi-layer piezoelectric device having excellent durability in which the amount of displacement does not change even when the piezoelectric actuator is subjected to continuous operation over a long period of time under a high voltage and a high pressure, the multi-layer piezoelectric device comprises a stack formed by stacking piezoelectric layers and internal electrodes alternately one on another and external electrodes formed on a first side face and on a second side face of the stack, wherein one of the adjacent internal electrodes is connected to the external electrode formed on the first side face and the other internal electrode is connected to the external electrode formed on the second side face, while content of alkali metal in a range from 5 ppm to 300 ppm is contained.

摘要翻译： 为了提供即使在压电致动器在高电压和高压下长时间连续操作的情况下，位移量也不会改变的耐久性优异的层叠型压电元件，则层叠型压电体 器件包括通过将压电层和内部电极彼此交替堆叠而形成的堆叠和形成在堆叠的第一侧面和第二侧面上的外部电极，其中相邻的内部电极中的一个连接到形成在 第一侧面和另一个内部电极连接到形成在第二侧面上的外部电极，同时含有5ppm至300ppm范围内的碱金属含量。

公开(公告)号：US07679272B2

公开(公告)日：2010-03-16

申请号：US10573339

申请日：2004-09-22

申请人： Takeshi Okamura ,  Katsushi Sakaue ,  Mitsuo Kondo

发明人： Takeshi Okamura ,  Katsushi Sakaue ,  Mitsuo Kondo

IPC分类号： H01L41/08

CPC分类号： H01L41/1876 ,  F02M51/0603 ,  F02M61/167 ,  H01L41/0471 ,  H01L41/0472 ,  H01L41/0477

摘要： To provide a multi-layer piezoelectric device having excellent durability in which the amount of displacement does not change even when the piezoelectric actuator is subjected to continuous operation over a long period of time under a high voltage and a high pressure, the multi-layer piezoelectric device comprises a stack formed by stacking piezoelectric layers and internal electrodes alternately one on another and external electrodes formed on a first side face and on a second side face of the stack, wherein one of the adjacent internal electrodes is connected to the external electrode formed on the first side face and the other internal electrode is connected to the external electrode formed on the second side face, while content of alkali metal in a range from 5 ppm to 300 ppm is contained.

摘要翻译： 为了提供即使在压电致动器在高电压和高压下长时间连续操作的情况下，位移量也不会改变的耐久性优异的层叠型压电元件，则层叠型压电体 器件包括通过将压电层和内部电极彼此交替堆叠而形成的堆叠和形成在堆叠的第一侧面和第二侧面上的外部电极，其中相邻的内部电极中的一个连接到形成在其上的外部电极 第一侧面和另一个内部电极连接到形成在第二侧面上的外部电极，同时含有5ppm至300ppm范围内的碱金属含量。

公开(公告)号：US07554251B2

公开(公告)日：2009-06-30

申请号：US10598680

申请日：2005-03-09

申请人： Mitsuo Kondo ,  Masaki Terazono ,  Takeshi Okamura ,  Katsushi Sakaue

发明人： Mitsuo Kondo ,  Masaki Terazono ,  Takeshi Okamura ,  Katsushi Sakaue

IPC分类号： H01L41/047

CPC分类号： H01L41/0472 ,  H01L41/0471 ,  H01L41/0477 ,  H01L41/273 ,  Y10T29/42

摘要： A multi-layer piezoelectric element having high durability which allows it to increase the amount of displacement of a piezoelectric actuator under high voltage and high pressure and does not undergo a change in the amount of displacement during continuous operation in a high electric field and under a high pressure over a long time period is provided.The multi-layer piezoelectric element comprises a stack of at least one piezoelectric layer and a plurality of internal electrodes consisting of first and second internal electrodes placed one on another, a first external electrode formed on a first side face of the stack and connected to the first internal electrode and a second external electrode formed on a second side face of the stack and connected to the second internal electrode, wherein the bonding strength between the piezoelectric layer and the internal electrode is weaker than the bending strength of the piezoelectric layer.

摘要翻译： 一种具有高耐久性的多层压电元件，其能够在高电压和高压下增加压电致动器的位移量，并且在高电场和在高电压下连续操作期间不会发生位移量的变化 提供了长时间的高压。 所述层叠型压电元件包括​​由至少一个压电体层叠的多个内部电极和由彼此重叠的第一和第二内部电极组成的多个内部电极，形成在所述堆叠体的第一侧面上的第一外部电极， 第一内部电极和第二外部电极，形成在所述堆叠的第二侧面上并与所述第二内部电极连接，其中所述压电层和所述内部电极之间的接合强度弱于所述压电层的弯曲强度。

公开(公告)号：US20070278907A1

公开(公告)日：2007-12-06

申请号：US10598680

申请日：2005-03-09

申请人： Mitsuo Kondo ,  Masaki Terazono ,  Takeshi Okamura ,  Katsushi Sakaue

发明人： Mitsuo Kondo ,  Masaki Terazono ,  Takeshi Okamura ,  Katsushi Sakaue

IPC分类号： H01L41/083 ,  H01L41/22

CPC分类号： H01L41/0472 ,  H01L41/0471 ,  H01L41/0477 ,  H01L41/273 ,  Y10T29/42

摘要： A multi-layer piezoelectric element having high durability which allows it to increase the amount of displacement of a piezoelectric actuator under high voltage and high pressure and does not undergo a change in the amount of displacement during continuous operation in a high electric field and under a high pressure over a long time period is provided. The multi-layer piezoelectric element comprises a stack of at least one piezoelectric layer and a plurality of internal electrodes consisting of first and second internal electrodes placed one on another, a first external electrode formed on a first side face of the stack and connected to the first internal electrode and a second external electrode formed on a second side face of the stack and connected to the second internal electrode, wherein the bonding strength between the piezoelectric layer and the internal electrode is weaker than the bending strength of the piezoelectric layer.

摘要翻译： 一种具有高耐久性的多层压电元件，其能够在高电压和高压下增加压电致动器的位移量，并且在高电场和在高电压下连续操作期间不会发生位移量的变化 提供了长时间的高压。 所述层叠型压电元件包括​​由至少一个压电体层叠的多个内部电极和由彼此重叠的第一和第二内部电极组成的多个内部电极，形成在所述堆叠体的第一侧面上的第一外部电极， 第一内部电极和第二外部电极，形成在所述堆叠的第二侧面上并与所述第二内部电极连接，其中所述压电层和所述内部电极之间的接合强度弱于所述压电层的弯曲强度。

公开(公告)号：US08125124B2

公开(公告)日：2012-02-28

申请号：US12717018

申请日：2010-03-03

申请人： Mitsuo Kondo ,  Masaki Terazono ,  Takeshi Okamura ,  Katsushi Sakaue

发明人： Mitsuo Kondo ,  Masaki Terazono ,  Takeshi Okamura ,  Katsushi Sakaue

IPC分类号： H01L41/047 ,  H01L41/083

CPC分类号： H01L41/0472 ,  H01L41/0471 ,  H01L41/0477 ,  H01L41/273 ,  Y10T29/42

摘要： A multi-layer piezoelectric element having high durability which allows it to increase the amount of displacement of a piezoelectric actuator under high voltage and high pressure and does not undergo a change in the amount of displacement during continuous operation in a high electric field and under a high pressure over a long time period is provided.The multi-layer piezoelectric element comprises a stack of at least one piezoelectric layer and a plurality of internal electrodes consisting of first and second internal electrodes placed one on another, a first external electrode formed on a first side face of the stack and connected to the first internal electrode and a second external electrode formed on a second side face of the stack and connected to the second internal electrode, wherein the bonding strength between the piezoelectric layer and the internal electrode is weaker than the bending strength of the piezoelectric layer.

摘要翻译： 一种具有高耐久性的多层压电元件，其能够在高电压和高压下增加压电致动器的位移量，并且在高电场和在高电压下连续操作期间不会发生位移量的变化 提供了长时间的高压。 所述层叠型压电元件包括​​由至少一个压电体层叠的多个内部电极和由彼此重叠的第一和第二内部电极组成的多个内部电极，形成在所述堆叠体的第一侧面上的第一外部电极， 第一内部电极和第二外部电极，形成在所述堆叠的第二侧面上并与所述第二内部电极连接，其中所述压电层和所述内部电极之间的接合强度弱于所述压电层的弯曲强度。

公开(公告)号：US07759847B2

公开(公告)日：2010-07-20

申请号：US12191178

申请日：2008-08-13

申请人： Takeshi Okamura ,  Katsushi Sakaue ,  Mitsuo Kondo

发明人： Takeshi Okamura ,  Katsushi Sakaue ,  Mitsuo Kondo

IPC分类号： H01L41/08

CPC分类号： H01L41/1876 ,  F02M51/0603 ,  F02M61/167 ,  H01L41/0471 ,  H01L41/0472 ,  H01L41/0477

摘要： To provide a multi-layer piezoelectric device having excellent durability in which the amount of displacement does not change even when the piezoelectric actuator is subjected to continuous operation over a long period of time under a high voltage and a high pressure, the multi-layer piezoelectric device comprises a stack formed by stacking piezoelectric layers and internal electrodes alternately one on another and external electrodes formed on a first side face and on a second side face of the stack, wherein one of the adjacent internal electrodes is connected to the external electrode formed on the first side face and the other internal electrode is connected to the external electrode formed on the second side face, while content of alkali metal in a range from 5 ppm to 300 ppm is contained.

摘要翻译： 为了提供即使在压电致动器在高电压和高压下长时间连续操作的情况下，位移量也不会改变的耐久性优异的层叠型压电元件，则层叠型压电体 器件包括通过将压电层和内部电极彼此交替堆叠而形成的堆叠和形成在堆叠的第一侧面和第二侧面上的外部电极，其中相邻的内部电极中的一个连接到形成在 第一侧面和另一个内部电极连接到形成在第二侧面上的外部电极，同时含有5ppm至300ppm范围内的碱金属含量。