公开(公告)号：US06243933B1

公开(公告)日：2001-06-12

申请号：US09303682

申请日：1999-05-03

申请人： Masato Sugimoto ,  Katsu Takeda ,  Yoshihiro Tomita ,  Osamu Kawasaki

发明人： Masato Sugimoto ,  Katsu Takeda ,  Yoshihiro Tomita ,  Osamu Kawasaki

IPC分类号： H04R1700

CPC分类号： H03H9/177 ,  H03H3/04 ,  H03H9/02031 ,  H03H9/0207 ,  H03H9/176 ,  Y10T29/42 ,  Y10T29/49004

摘要： A wafer with a reversed domain is prepared for two piezoelectric single crystal plates and of about the same thickness by using direct bonding without any adhesive. Driving electrodes are formed on two principal planes of the wafer with a reversed domain to provide a piezoelectric resonator. A piezoelectric resonator having the structure with a reversed polarization and using odd-order vibration modes vibrating with a fundamental wave has a wavelength of a thickness thereof and suppresses scattering of the thickness of the domains with a reversed polarization. In the direct bonding, the axes of the spontaneous polarization of the two piezoelectric single crystal plates are reverse to each other and crystalline axes other than the axes of polarization are shifted intentionally by an angle other than zero. Thus, spurious modes are suppressed in a simple way.

摘要翻译： 对于两个压电单晶板制备具有反向畴的晶片，并且通过直接接合而没有任何粘合剂制备大约相同的厚度。 在晶片的两个主平面上形成驱动电极，具有反向的畴，以提供压电谐振器。 具有反极化结构和使用基波振荡的奇数振动模式的压电谐振器具有其厚度的波长，并且抑制具有反向偏振的畴的厚度的散射。 在直接接合中，两个压电单晶板的自发极化的轴线彼此相反，并且除偏振轴之外的结晶轴有意地以不同于零的角度移动。 因此，以简单的方式抑制杂散模式。

公开(公告)号：US5929555A

公开(公告)日：1999-07-27

申请号：US834207

申请日：1997-04-15

申请人： Masato Sugimoto ,  Katsu Takeda ,  Yoshihiro Tomita ,  Osamu Kawasaki

发明人： Masato Sugimoto ,  Katsu Takeda ,  Yoshihiro Tomita ,  Osamu Kawasaki

IPC分类号： H03H3/04 ,  H03H9/02 ,  H03H9/17 ,  H03H9/56 ,  H01L41/08

CPC分类号： H03H9/177 ,  H03H3/04 ,  H03H9/02031 ,  H03H9/0207 ,  H03H9/176 ,  Y10T29/42 ,  Y10T29/49004

摘要： A wafer with a reversed domain is prepared for two piezoelectric single crystal plates 11 and 12 having about the same thickness as each other by using direct bonding without any adhesive. Then, driving electrodes 13 are formed on two principal planes of the wafer with a reversed domain to provide a piezoelectric resonator. A piezoelectric resonator having the structure with a reverses polarization and using odd-order vibration modes vibrating with a fundamental wave has a wavelength of a thickness thereof suppresses scattering of the thickness of the domains with a reversed polarization. In the direct bonding, the axes of the spontaneous polarization of the two piezoelectric single crystal plates are reverse to each other and crystalline axes other than the axes of polarization are shifted intentionally by an angle other than zero. Thus, spurious modes are suppressed in a simple way.

摘要翻译： 通过使用没有任何粘合剂的直接粘合，为具有彼此具有大致相同厚度的两个压电单晶板11和12制备具有反向畴的晶片。 然后，驱动电极13形成在具有反向域的晶片的两个主平面上，以提供压电谐振器。 具有反转偏振结构和使用基波振荡的奇数振动模式的压电谐振器具有其厚度的波长，抑制具有反向偏振的畴的厚度的散射。 在直接接合中，两个压电单晶板的自发极化的轴线彼此相反，并且除偏振轴之外的结晶轴有意地以不同于零的角度移动。 因此，以简单的方式抑制杂散模式。

公开(公告)号：US4853579A

公开(公告)日：1989-08-01

申请号：US089334

申请日：1987-08-25

申请人： Osamu Kawasaki ,  Katsu Takeda ,  Ritsuo Inaba ,  Tetsuji Fukada

发明人： Osamu Kawasaki ,  Katsu Takeda ,  Ritsuo Inaba ,  Tetsuji Fukada

IPC分类号： H01L41/04 ,  H02N2/14 ,  H02N2/16

CPC分类号： H02N2/14 ,  H02N2/142 ,  H02N2/163

摘要： A method of driving an ultrasonic motor having a rotation body (6) which is rotated by travelling waves generated in a vibrator body (3), whereby the drive frequency of the motor is controlled in accordance with the value of an operating parameter such as phase difference between drive current and voltage, such as to maintain the drive frequency at a value which is lower than the antiresonance frequency of the vibrator body (3) and higher than a highest resonance frequency of the vibrator body (3) in a hysteresis loop exhibited by a resonance frequency characteristic of the vibrator body (3). Continuous stable operation is attained, irrespective of the effects of temperature and load changes upon the motor operating characteristics.

摘要翻译： 一种驱动超声波马达的方法，所述超声波马达具有旋转体（6），所述旋转体（6）由在振动体（3）中产生的行波旋转，由此根据诸如相位的运行参数的值来控制马达的驱动频率 驱动电流和电压之间的差异，例如将驱动频率保持在低于振动体（3）的反共振频率并且高于振动体（3）在磁滞回线中的最高共振频率的值 通过振动体（3）的共振频率特性。 无论温度和负载变化对电动机工作特性的影响如何，均可实现连续的稳定运行。

公开(公告)号：US4829209A

公开(公告)日：1989-05-09

申请号：US126105

申请日：1987-11-20

申请人： Osamu Kawasaki ,  Ritsuo Inaba ,  Akira Tokushima ,  Katsu Takeda

发明人： Osamu Kawasaki ,  Ritsuo Inaba ,  Akira Tokushima ,  Katsu Takeda

IPC分类号： H01L41/09 ,  H02N2/00 ,  H02N2/16

CPC分类号： H02N2/166

摘要： In an ultrasonic motor wherein an elastic travelling wave is excited in a vibrating stator comprising a piezoelectric element and an elastic element thereby to drive and a rotor which is disposed to touch the vibrating stator with pressure by friction forces, an ultrasonic motor having high efficiency is obtained. In the present invention, the above-mentioned vibrating stator is substantially disk-type, electrodes being provided to the piezoelectric element are disposed in a form of two sets of concentric circles having different phases with respect to each other in a circumferential direction in which the vibration is travelling, and have a constitution which excites the vibrating stator by flexural vibration modes of second order or higher in a radial direction and of third order or higher in the circumferential direction, and also, are designed so that at least mechanical impedances seen from each electrode become equal. By superimposing standing waves of the flexural vibration which are excited by those two sets of electrodes, the flexural vibration is made to travel in the circumferential direction, thereby to obtain a driving force.

公开(公告)号：US06227051B1

公开(公告)日：2001-05-08

申请号：US09532027

申请日：2000-03-21

申请人： Tetsuro Otsuchi ,  Katsu Takeda ,  Katsunori Moritoki ,  Osamu Kawasaki ,  Junichi Kato ,  Kouji Kawakita ,  Hiroshi Kagata

发明人： Tetsuro Otsuchi ,  Katsu Takeda ,  Katsunori Moritoki ,  Osamu Kawasaki ,  Junichi Kato ,  Kouji Kawakita ,  Hiroshi Kagata

IPC分类号： G01P1509

CPC分类号： G01P15/0922 ,  G01P21/00

摘要： An acceleration sensor has a piezoelectric element which includes a piezoelectric member layer in which a plurality of piezoelectric members are stacked and electrodes which are disposed in major opposed surfaces of the piezoelectric member layer; and a support member for supporting the piezoelectric element, wherein some piezoelectric members of the piezoelectric member layer are polarized. The electrodes are disposed in both surfaces of the polarized piezoelectric members. Capacitors which are formed by the polarized piezoelectric members and the electrodes in both surfaces of the polarized piezoelectric members are connected parallel to each other.

摘要翻译： 一种加速度传感器具有压电元件，该压电元件包括​​堆叠有多个压电元件的压电元件层和设置在该压电元件层主要相对表面的电极; 以及用于支撑压电元件的支撑构件，其中压电构件层的一些压电构件被极化。 电极设置在极化压电部件的两个表面。 由极化压电部件形成的电容器和极化压电部件的两面的电极彼此平行地连接。

公开(公告)号：US6050144A

公开(公告)日：2000-04-18

申请号：US89660

申请日：1998-06-03

申请人： Tetsuro Otsuchi ,  Katsu Takeda ,  Katsunori Moritoki ,  Osamu Kawasaki ,  Junichi Kato ,  Kouji Kawakita ,  Hiroshi Kagata

发明人： Tetsuro Otsuchi ,  Katsu Takeda ,  Katsunori Moritoki ,  Osamu Kawasaki ,  Junichi Kato ,  Kouji Kawakita ,  Hiroshi Kagata

IPC分类号： G01P15/09 ,  G01P21/00

CPC分类号： G01P15/0922 ,  G01P21/00

摘要： An acceleration sensor has a piezoelectric element which includes a piezoelectric member layer in which a plurality of piezoelectric members are stacked and electrodes which are disposed in major opposed surfaces of the piezoelectric member layer; and a support member for supporting the piezoelectric element, wherein some piezoelectric members of the piezoelectric member layer are polarized, the electrodes are disposed in the both surfaces of the polarized piezoelectric members, capacitors which are formed by the polarized piezoelectric members and the electrodes in the both surfaces of the polarized piezoelectric members are connected parallel to each other.

摘要翻译： 加速度传感器具有压电元件，该压电元件包括​​堆叠有多个压电元件的压电元件层和设置在该压电元件层的主要相对表面的电极; 以及用于支撑所述压电元件的支撑构件，其中所述压电构件层的一些压电构件被极化，所述电极设置在所述极化压电构件的两个表面中，所述极化压电构件形成的电容器和所述极化压电构件中的电极 极化压电元件的两个表面彼此平行地连接。

公开(公告)号：US09253578B2

公开(公告)日：2016-02-02

申请号：US14237481

申请日：2012-08-28

申请人： Fumiyasu Konno ,  Katsu Takeda

发明人： Fumiyasu Konno ,  Katsu Takeda

IPC分类号： H04R17/00 ,  H04R1/32 ,  H04R7/20 ,  H04R1/40

CPC分类号： H04R17/00 ,  H04R1/323 ,  H04R1/403 ,  H04R7/20 ,  H04R2307/027 ,  H04R2307/204 ,  H04R2307/207

摘要： In a directional loudspeaker, an audible sound signal that is modulated with a carrier wave in the ultrasonic wave band is input to a piezoelectric element, and thereby a diaphragm having the piezoelectric element is vibrated and a sound wave is generated. In such a directional loudspeaker, the diaphragm is fixed to a fixed part via a plurality of beams disposed along the outer circumference of the diaphragm.

摘要翻译： 在定向扬声器中，在超声波波段中用载波调制的声音信号被输入到压电元件，由此使具有压电元件的隔膜振动并产生声波。 在这种定向扬声器中，隔膜通过沿隔膜的外圆周设置的多个光束固定到固定部分。

公开(公告)号：US07170215B2

公开(公告)日：2007-01-30

申请号：US10865125

申请日：2004-06-10

申请人： Akihiko Namba ,  Keiji Onishi ,  Katsu Takeda

发明人： Akihiko Namba ,  Keiji Onishi ,  Katsu Takeda

IPC分类号： H01L41/08

CPC分类号： H03H9/564 ,  B41J2002/14266 ,  H03H3/04 ,  H03H9/173 ,  H03H9/174 ,  H03H9/175 ,  H03H2003/0435 ,  H03H2003/0478 ,  Y10T29/42 ,  Y10T29/49005 ,  Y10T29/49128 ,  Y10T29/4913 ,  Y10T29/49135

摘要： An electronic component includes a substrate; a piezoelectric material layer supported directly or indirectly by the substrate; a first electrode arranged on a surface of the piezoelectric material layer on an opposite side of the substrate; and a second electrode arranged on a surface of the piezoelectric material layer on the substrate side. The piezoelectric material layer is sandwiched between the first electrode and the second electrode. The first electrode has a smaller surface area than the piezoelectric material layer. A portion where the piezoelectric material layer is exposed from the first electrode includes a portion that is thinner than a thickness of the piezoelectric material layer between the first electrode and the second electrode. Thus, it is possible to configure a resonator with a higher frequency than its ordinary resonance, and it is easy to achieve an adjustment of the resonance frequency of the resonator, as well as improving the yield of the component and enabling the configuration of an electronic component that includes a plurality of resonators of different frequencies.

摘要翻译： 电子部件包括基板; 由衬底直接或间接支撑的压电材料层; 布置在所述压电材料层的与所述基板相反的一侧的表面上的第一电极; 以及设置在基板侧的压电体层的表面上的第二电极。 压电材料层夹在第一电极和第二电极之间。 第一电极具有比压电材料层更小的表面积。 压电材料层从第一电极露出的部分包括比第一电极和第二电极之间的压电材料层的厚度薄的部分。 因此，可以构成具有比其普通谐振更高的频率的谐振器，并且容易实现谐振器的谐振频率的调节，以及提高元件的产量并且能够构造电子 该组件包括多个不同频率的谐振器。

公开(公告)号：US06911787B2

公开(公告)日：2005-06-28

申请号：US10719546

申请日：2003-11-21

申请人： Katsu Takeda ,  Hiroshi Nakatsuka

发明人： Katsu Takeda ,  Hiroshi Nakatsuka

IPC分类号： G02F1/133 ,  G09G3/34 ,  H01L41/04 ,  H05B41/282 ,  H05B37/02

CPC分类号： H05B41/2828 ,  H01L41/044

摘要： There is provided a method for driving a piezoelectric transformer in which a driving efficiency and the reliability in terms of withstand power and distortion can be enhanced by suppressing a higher order vibration mode exited by a harmonic component other than a driving frequency included in a driving signal of the piezoelectric transformer without using an inductive element. The driving signal applied to a primary side electrode of the piezoelectric transformer is a signal in a rectangular waveform having a time period δT in which a level is a maximum potential (2V) or a minimum potential (0), obtained by multiplying a period T of the driving signal by a predetermined time ratio δ. The time ratio δ is set to be smaller than 0.5 and so as to minimize a sum of ratios of amplitudes of respective higher order vibration modes with respect to an amplitude of a vibration mode exciting the piezoelectric transformer.

摘要翻译： 提供了一种用于驱动压电变压器的方法，其中通过抑制由包括在驱动信号中的驱动频率以外的谐波分量退出的高阶振动模式，可以提高驱动效率和耐受功率和失真方面的可靠性 的压电变压器，而不使用电感元件。 施加到压电变压器的初级侧电极的驱动信号是具有时间段ΔT的矩形波形的信号，其中电平是通过将周期T乘以的最大电位（2V）或最小电位（0） 的驱动信号。 将时间比Δ设定为小于0.5，并且使得相对于激励压电变压器的振动模式的振幅的各较高阶振动模式的振幅比之和最小化。

公开(公告)号：US20140153750A1

公开(公告)日：2014-06-05

申请号：US14237481

申请日：2012-08-28

申请人： Fumiyasu Konno ,  Katsu Takeda

发明人： Fumiyasu Konno ,  Katsu Takeda

IPC分类号： H04R17/00

CPC分类号： H04R17/00 ,  H04R1/323 ,  H04R1/403 ,  H04R7/20 ,  H04R2307/027 ,  H04R2307/204 ,  H04R2307/207

摘要： In a directional loudspeaker, an audible sound signal that is modulated with a carrier wave in the ultrasonic wave band is input to a piezoelectric element, and thereby a diaphragm having the piezoelectric element is vibrated and a sound wave is generated. In such a directional loudspeaker, the diaphragm is fixed to a fixed part via a plurality of beams disposed along the outer circumference of the diaphragm.

摘要翻译： 在定向扬声器中，在超声波波段中用载波调制的声音信号被输入到压电元件，由此使具有压电元件的隔膜振动并产生声波。 在这种定向扬声器中，隔膜通过沿隔膜的外圆周设置的多个光束固定到固定部分。