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21. 发明授权

US08432085B2 Multi-layer piezoelectric element having low rigidity metal layers, and ejection apparatus and fuel ejection system that employ the same 有权
标题翻译：具有低刚性金属层的多层压电元件，以及采用该层压电元件的喷射装置和燃料喷射系统
公开(公告)号：US08432085B2
公开(公告)日：2013-04-30
申请号：US12671061
申请日：2008-09-17
申请人： Takeshi Okamura
发明人： Takeshi Okamura
IPC分类号： H01L41/083
CPC分类号： H01L41/0838 , F02M51/0603 , H01L41/273
摘要： A multi-layer piezoelectric element having high durability of which amount of displacement is suppressed from varying even when operated continuously over a long period of time with a higher electric field under a high pressure is provided.The multi-layer piezoelectric element which has a multi-layer structure, the multi-layer structure comprising a plurality of piezoelectric material layers and a plurality of metal layers that are stacked alternately, wherein the piezoelectric material layer is constituted from a plurality of piezoelectric crystal grains, the plurality of metal layers comprise internal electrodes and low-rigidity metal layer that has rigidity lower than those of the internal electrodes and the piezoelectric material layer, and wherein the low-rigidity metal layer has a plurality of metal parts that are separated from each other, and an end of the metal part infiltrates between the piezoelectric crystal grains.
摘要翻译：提供一种具有高耐久性的层叠型压电元件，即使在高压下具有较高的电场的情况下，即使在长时间连续运转时也能够抑制其位移量的变化。具有多层结构的多层压电元件，所述多层结构包括交替堆叠的多个压电材料层和多个金属层，其中所述压电材料层由多个压电晶体多个金属层包括刚性低于内部电极和压电材料层的刚性金属层的内部电极和低刚性金属层，并且其中低刚性金属层具有多个与彼此之间，并且金属部分的一端渗入压电晶粒之间。

22. 发明授权

US08188637B2 Laminated piezoelectric element with porous sections 有权
标题翻译：层压压电元件多孔段
公开(公告)号：US08188637B2
公开(公告)日：2012-05-29
申请号：US12483592
申请日：2009-06-12
申请人： Takeshi Okamura , Ichitaro Okamura
发明人： Takeshi Okamura , Ichitaro Okamura
IPC分类号： H01L41/083 , H01L41/04
CPC分类号： H01L41/0838 , F02M51/0603
摘要： A laminated piezoelectric element having a laminated structure in which a plurality of piezoelectric layers and a plurality of internal electrodes are alternately laminated is provided. This laminated structure has an opposing section wherein an internal electrode on an anode side and an internal electrode on a cathode side which are adjacent to each other in the laminating direction, oppose in the laminating direction, and an end-side non-opposing section situated in a position closer to end in the laminating direction than the opposing section. This end-side non-opposing section has a porous section having porosity larger than that of the internal electrodes.
摘要翻译：提供具有交替层叠有多个压电层和多个内部电极的层叠结构的层压型压电元件。这种层叠结构具有相对的部分，其中在层叠方向上彼此相邻的在阳极侧的内部电极和阴极侧的内部电极在层叠方向上相对，并且端部侧非对置部分位于处于层叠方向上比相对部分更靠近端部的位置。该端侧非相对部分具有孔隙率大于内部电极的多孔部分。

23. 发明授权

US07902726B2 Multi-layer piezoelectric device 有权
标题翻译：多层压电器件
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。

24. 发明授权

US07679272B2 Multi-layer piezoelectric element 有权
标题翻译：多层压电元件
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。

25. 发明授权

US07554251B2 Multi-layer piezoelectric element and method for manufacturing the same 有权
标题翻译：多层压电元件及其制造方法
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。

26. 发明申请

US20070278907A1 Multi-Layer Piezoelectric Element and Method for Manufacturing the Same 有权
标题翻译：多层压电元件及其制造方法
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。

27. 发明申请

US20070069610A1 Multi-layer electronic component and method for manufacturing the same, multi-layer piezoelectric element 有权
标题翻译：多层电子元件及其制造方法，层叠型压电元件
公开(公告)号：US20070069610A1
公开(公告)日：2007-03-29
申请号：US10566044
申请日：2004-07-28
申请人： Susumu Ono , Takeshi Okamura , Katsushi Sakaue , Takaaki Hira , Masaki Terazono
发明人： Susumu Ono , Takeshi Okamura , Katsushi Sakaue , Takaaki Hira , Masaki Terazono
IPC分类号： H01L41/083
CPC分类号： H01L41/083 , H01L41/0471 , H01L41/273
摘要： In order to provide a multi-layer electronic component in which the occurrence of delamination between the ceramic layer and the internal electrode is restricted and a method for manufacturing the same, the multi-layer electronic component of the present invention comprises a stack formed by stacking piezoelectric layers and internal electrodes one on another alternately and a pair of external electrodes formed on two opposing side faces of the stack, wherein the internal electrode consists of a first internal electrode connected to the external electrode formed on one of the two side faces and a second internal electrode located between the first internal electrode and connected to the external electrode formed on the other one of the two side faces, and wherein the internal electrodes and the piezoelectric layers are faced in proximity so that a space between them is 2 μm or less over an area occupying 50% or more of the active region where the first internal electrode and the second internal electrode oppose each other.
摘要翻译：为了提供限制陶瓷层和内部电极之间的分层的发生的多层电子部件及其制造方法，本发明的多层电子部件包括：叠层体压电层和内部电极彼此交替设置，一对外部电极形成在堆叠的两个相对侧面上，其中内部电极由连接到形成在两个侧面中的一个侧面上的外部电极的第一内部电极和所述第二内部电极位于所述第一内部电极之间并且与形成在所述两个侧面中的另一个侧面上的所述外部电极连接，并且其中所述内部电极和所述压电层面对，使得它们之间的空间为2μm或更小在占有第一内部电极和第二内部电极的有源区域的50％以上的区域上 d内部电极彼此相对。

28. 发明申请

US20050085209A1 Nonradiative dielectric waveguide and a millimeter-wave transmitting/receiving apparatus 审中-公开
标题翻译：非辐射介质波导和毫米波发射/接收装置
公开(公告)号：US20050085209A1
公开(公告)日：2005-04-21
申请号：US10973749
申请日：2004-10-26
申请人： Nobuki Hiramatsu , Takeshi Okamura , Kazuki Hayata , Yoshitake Terashi , Hironori Kii , Hiroshi Uchimura , Akinori Sato
发明人： Nobuki Hiramatsu , Takeshi Okamura , Kazuki Hayata , Yoshitake Terashi , Hironori Kii , Hiroshi Uchimura , Akinori Sato
IPC分类号： H01P3/16 , H01Q13/28 , H04B1/26
CPC分类号： H01P3/165 , H01Q13/28
摘要： A NRD guide includes a pair of parallel plate conductors opposed to each other at a spacing equal to or shorter than half the wavelength of a high-frequency signal to be transmitted and having opposing inner surfaces whose arithmetic average roughness Ra satisfies 0.1 μm≦Ra≦50 μm, and a dielectric strip arranged between the pair of parallel plate conductors and held in contact with the respective inner surfaces of the parallel plate conductors. The dielectric strip is strongly secured to the inner surfaces to exhibit an excellent durability. The transmission loss of the high-frequency signal can be effectively suppressed.
摘要翻译： NRD引导件包括一对彼此相对的平行板导体，其间隔等于或短于要传输的高频信号的波长的一半，并且具有相对的内表面，其算术平均粗糙度Ra满足0.1μm

29. 发明申请

US20150022058A1 PIEZOELECTRIC ACTUATOR, PIEZOELECTRIC VIBRATION APPARATUS, AND PORTABLE TERMINAL 有权
标题翻译：压电致动器，压电振动装置和便携式终端
公开(公告)号：US20150022058A1
公开(公告)日：2015-01-22
申请号：US14372251
申请日：2012-08-31
申请人： Takeshi Okamura , Shigenobu Nakamura
发明人： Takeshi Okamura , Shigenobu Nakamura
IPC分类号： H01L41/09 , H04R17/00 , H01L41/047
CPC分类号： H01L41/0973 , B06B1/0603 , B06B1/0611 , H01L41/0471 , H01L41/0472 , H01L41/0475 , H01L41/083 , H04M1/03 , H04R17/00 , H04R31/00 , H04R2499/11
摘要： A piezoelectric actuator includes a stacked body composed of internal electrodes and piezoelectric layers which are stacked on each other; and a surface electrode disposed on at least one of main surfaces of the stacked body so as to be electrically connected to the internal electrodes. The internal electrodes each includes a first electrode and a second electrode. The stacked body has an active section in which the first electrodes and the second electrodes of the internal electrodes are arranged so as to overlap each other in a stacking direction thereof, and an inactive section which is every section of the stacked body other than the active section. An internal electrode placed on a one-main-surface side of the internal electrodes is configured so that its end part situated near a boundary between the active section and the inactive section is curved toward the other main surface.
摘要翻译：压电致动器包括由彼此堆叠的内部电极和压电层构成的层叠体; 以及设置在所述层叠体的至少一个主面上以与内部电极电连接的表面电极。内部电极各自包括第一电极和第二电极。层叠体具有主动部，其中内部电极的第一电极和第二电极在其堆叠方向上彼此重叠地布置，并且非活动部分是层叠体的除活性物体以外的每个部分部分。配置在内部电极的一个主表面侧的内部电极被构造为使得其位于有源部分和非活性部分之间的边界附近的端部朝向另一个主表面弯曲。

30. 发明授权

US08125124B2 Multi-layer piezoelectric element and method for manufacturing the same 有权
标题翻译：多层压电元件及其制造方法
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。

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