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    • 3. 发明授权
    • Non-radiative dielectric waveguide and millimeter wave transmitting/receiving apparatus
    • 非辐射介质波导和毫米波发射/接收装置
    • US06882253B2
    • 2005-04-19
    • US09995205
    • 2001-11-26
    • Takeshi OkamuraNobuki Hiramatsu
    • Takeshi OkamuraNobuki Hiramatsu
    • H01P3/16H01P3/12
    • H01P3/165
    • The invention provides a highly-reliable, low-loss non-radiative dielectric waveguide. According to one aspect of the invention, a non-radiative dielectric waveguide comprises parallel planar conductors arranged at an interval of half or below of a high-frequency signal wavelength, and a dielectric strip interposed between the parallel planar conductors. The dielectric strip has a 0.01 to 0.3 mm-wide chamfer formed at its edge portion in a high-frequency signal transmission direction. According to another aspect of the invention, a non-radiative dielectric waveguide comprises parallel planar conductors arranged at an interval of half or below of a high-frequency signal wavelength, and a dielectric strip interposed between the parallel planar conductors. The dielectric strip is made of a ceramics having an open pore ratio of 5% or less.
    • 本发明提供了一种高度可靠的低损耗非辐射介质波导。 根据本发明的一个方面,非辐射介质波导包括以高​​频信号波长的一半或更低的间隔布置的平行平面导体,以及介于平行平面导体之间的介质条。 介质条具有在高频信号传输方向的边缘部分处形成的0.01至0.3mm宽的倒角。 根据本发明的另一方面,非辐射介质波导包括以高​​频信号波长的一半或更低的间隔布置的平行平面导体,以及插入在平行平面导体之间的介质条。 介质条由具有5%以下的开孔率的陶瓷制成。
    • 5. 发明授权
    • Multilayer piezoelectric element and injector using the same
    • 多层压电元件和注射器使用相同
    • US08441174B2
    • 2013-05-14
    • US11917747
    • 2006-06-15
    • Takeshi OkamuraMasaki TerazonoTomohiro KawamotoTakafumi TsurumaruShigenobu NakamuraKen Yamamoto
    • Takeshi OkamuraMasaki TerazonoTomohiro KawamotoTakafumi TsurumaruShigenobu NakamuraKen Yamamoto
    • H01L41/083
    • H01L41/0838B05B17/0653F02M51/0603H01L41/0471H01L41/0477
    • In a multilayer piezoelectric element in which a plurality of piezoelectric layers and a plurality of metal layers are stacked alternately, the plurality of metal layers include a plurality of low-filled metal layers having a lower filling rate of metal composing the metal layers than oppositely disposed metal layers adjacent to each other in a stacking direction. In a multilayer piezoelectric element in which a plurality of piezoelectric layers and a plurality of metal layers are stacked alternately, the plurality of metal layers include a plurality of thin metal layers having a smaller thickness than oppositely disposed metal layers adjacent to each other in a stacking direction. In a multilayer piezoelectric element in which a plurality of piezoelectric layers and a plurality of metal layers composed mainly of an alloy are stacked alternately, the plurality of metal layers include a plurality of high-ratio metal layers having a higher ratio of a component constituting the alloy than oppositely disposed metal layers adjacent to each other in a stacking direction.
    • 在其中多个压电层和多个金属层交替堆叠的多层压电元件中,多个金属层包括多个低填充金属层,其中构成金属层的金属填充率低于相对设置的金属层 在层叠方向上彼此相邻的金属层。 在其中多个压电层和多个金属层交替堆叠的多层压电元件中,多个金属层包括多个薄金属层,其厚度相对于彼此相邻布置的金属层的厚度小于堆叠 方向。 在其中多个压电层和主要由合金构成的多个金属层交替堆叠的多层压电元件中,多个金属层包括多个高比例的金属层,其中构成 合金比层叠方向上彼此相邻的相对设置的金属层。
    • 6. 发明授权
    • Multi-layer piezoelectric element, ejection device having the element, and fuel ejection system
    • 多层压电元件,具有元件的喷射装置和燃料喷射系统
    • US08405278B2
    • 2013-03-26
    • US12740102
    • 2008-10-22
    • Takeshi Okamura
    • Takeshi Okamura
    • H01L41/083
    • H01L41/0838F02M51/0603
    • Provided is a multi-layer piezoelectric element in which the amount of the positional displacement can be suppressed even when continuous driving is performed for a long time under high electrical field and high pressure, and which may have a good durability. The laminated piezoelectric element comprises a stacked body in which piezoelectric layers and metal layers are stacked alternately one on another. The metal layers comprise internal electrodes and a low-rigidity metal layer which has rigidity lower than those of the piezoelectric layer and the internal electrode. The low-rigidity metal layer comprises a plurality of metal parts isolated from each other via voids, and a covering layer which covers at least a part of the metal parts.
    • 提供一种即使在高电场和高压下长时间进行连续驱动也能够抑制位移量的层叠型压电元件,其可以具有良好的耐久性。 叠层压电元件包括​​层叠体,压电体层和金属层交替层叠。 金属层包括内部电极和刚性低于压电层和内部电极的刚性的低刚性金属层。 低刚性金属层包括通过空隙彼此隔离的多个金属部件和覆盖金属部件的至少一部分的覆盖层。
    • 7. 发明授权
    • Multi-layer electronic component and method for manufacturing the same, multi-layer piezoelectric element
    • 多层电子元件及其制造方法,层叠型压电元件
    • US07633210B2
    • 2009-12-15
    • US10566044
    • 2004-07-28
    • Susumu OnoTakeshi OkamuraKatsushi SakaueTakaaki HiraMasaki Terazono
    • Susumu OnoTakeshi OkamuraKatsushi SakaueTakaaki HiraMasaki Terazono
    • H01L41/083
    • H01L41/083H01L41/0471H01L41/273
    • 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.
    • 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。
    • 9. 发明申请
    • Multi-Layer Piezoelectric Element
    • 多层压电元件
    • US20070273251A1
    • 2007-11-29
    • US10573331
    • 2004-09-22
    • Takeshi OkamuraKatsushi SakaueShigenobu Nakaumra
    • Takeshi OkamuraKatsushi SakaueShigenobu Nakaumra
    • H01L41/083
    • H01L41/0471F02M51/0603H01L41/0472H01L41/0477
    • A multi-layer piezoelectric element having excellent durability in which the amount of displacement does not change even after subjecting to continuous operation over a long period of time under a high voltage and a high pressure is provided. The multi-layer piezoelectric element 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 the metal composition contained in the internal electrodes contains group VIII metal and group Ib metal of the periodic table as the main components, and contents of the group VIII metal and the group Ib metal are set so that proportion M1 (% by weight) of the group VIII metal and proportion M2 of the group Ib metal satisfy the relations 0
    • 提供了一种具有优异的耐久性的层叠型压电元件,其中即使在高电压和高压下长时间连续操作,位移量也不变化。 所述层叠型压电元件具有将叠层的压电层和内部电极彼此交替堆叠而形成的叠层和形成在所述堆叠的第一侧面和第二侧面上的外部电极,其中,所述相邻的内部电极之一与 形成在第一侧面上的外部电极和另一个内部电极连接到形成在第二侧面上的外部电极,而包含在内部电极中的金属组合物包含周期表的VIII族金属和Ib族金属作为 主要成分和VIII族金属和Ib族金属的含量被设定为使得第Ⅷ族金属的比例M 1(重量%)和Ib族金属的比例M 2满足关系0
    • 10. 发明授权
    • Multi-layer piezoelectric element with metal parts or ceramic parts bonded to only one piezoelectric material layer
    • 具有仅与一个压电材料层结合的金属部件或陶瓷部件的多层压电元件
    • US08450908B2
    • 2013-05-28
    • US12675387
    • 2008-08-25
    • Takeshi Okamura
    • Takeshi Okamura
    • H01L41/083
    • H01L41/0838F02M51/0603H01L41/273
    • 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 comprising a multi-layer structure in which a plurality of piezoelectric material layers and a plurality of metal layers are stacked alternately one on another, wherein the plurality of metal layers comprises internal electrodes and low-rigidity metal layer that has rigidity lower than those of the piezoelectric material layer and the internal electrode, wherein the low-rigidity metal layer comprises a plurality of metal parts that are separated from each other, and wherein at least one of the metal parts is bonded with only one piezoelectric material layer among the two piezoelectric material layers that adjoin in the stacking direction.
    • 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。 所述层叠型多层压电元件包括​​多层结构,其中多个压电体层和多层金属层彼此交替叠层,其中所述多个金属层包括内部电极和低刚性金属层,所述金属层具有 刚性低于压电材料层和内部电极的刚度,其中低刚性金属层包括彼此分离的多个金属部件,并且其中至少一个金属部件仅与一个压电材料接合 在层叠方向上邻接的两个压电体层之间。