公开(公告)号：US06803702B2

公开(公告)日：2004-10-12

申请号：US10050586

申请日：2002-01-18

申请人： Hong Qiu ,  Koji Sumi ,  Tsutomu Nishiwaki ,  Masanori Okuyama ,  Zhiqiang Wei

发明人： Hong Qiu ,  Koji Sumi ,  Tsutomu Nishiwaki ,  Masanori Okuyama ,  Zhiqiang Wei

IPC分类号： H01L4108

CPC分类号： B41J2/1628 ,  B41J2/161 ,  B41J2/1629 ,  B41J2/1642 ,  B41J2/1645 ,  B41J2/1646 ,  H01L41/1876 ,  H01L41/317 ,  H01L41/318

摘要： When a piezoelectric material is manufactured by hydrothermal method, the proper amount of lead contained in the piezoelectric film can be ensured and decreases in piezoelectric characteristics can be prevented. A method for manufacturing a piezoelectric material expressed by the formula ABO3, containing an element “a” as the element expressed by A above, and having a perovskite crystal structure, comprises a first step of producing an oxide containing an element “a′”, and a second step of producing a piezoelectric material by subjecting the oxide produced in the first step to a hydrothermal processing using an aqueous solution containing the element “a”, wherein the amount of the element “a”, contained in the piezoelectric material produced in the second step is increased over the amount of the element “a” contained in the oxide produced in the first step.

摘要翻译： 当通过水热法制造压电材料时，可以确保压电膜中所含的适量的铅，并且可以防止压电特性的降低。 制备由式ABO3表示的压电材料的方法，其包含元素“a”作为上述A表示的元素，并且具有钙钛矿晶体结构，包括制备含有元素“a”的氧化物的第一步骤， 以及第二步骤，通过使用含有元素“a”的水溶液对第一步骤中产生的氧化物进行水热处理来制造压电材料，其中包含在压电材料中所含的元素“a”的量 第二步骤比第一步产生的氧化物中所含的元素“a”的量增加。

公开(公告)号：US06739703B2

公开(公告)日：2004-05-25

申请号：US10290466

申请日：2002-11-08

申请人： Takamitsu Higuchi ,  Setsuya Iwashita ,  Koji Sumi ,  Masami Murai

发明人： Takamitsu Higuchi ,  Setsuya Iwashita ,  Koji Sumi ,  Masami Murai

IPC分类号： B41J2045

CPC分类号： B41J2/14233 ,  H01L41/0973

摘要： An optimum layer structure for a piezoelectric actuator is provided, in which strontium ruthenate oriented in (100) plane is used as a bottom electrode. The piezoelectric actuator comprises an Si substrate 20, a diaphragm 30 formed on the Si substrate 20 and comprising SiO2 or ZrO2, a buffer layer 32 formed on this diaphragm and comprising (100) orientation or (110) orientation SrO, a bottom electrode 42 formed on the buffer layer and comprising (100) orientation strontium ruthenate having a perovskite structure, a piezoelectric layer 43 formed on the bottom electrode and comprising (100) orientation PZT, and a top electrode 44 formed on the piezoelectric layer.

摘要翻译： 提供了一种用于压电致动器的最佳层结构，其中在（100）平面中取向的钌酸锶用作底部电极。 压电致动器包括Si衬底20，形成在Si衬底20上并包括SiO 2或ZrO 2的隔膜30，形成在该隔膜上并包括（100）取向或（110）取向SrO的缓冲层32，形成的底部电极42 在缓冲层上并且包含（100）具有钙钛矿结构的取向钌酸锶，形成在底部电极上并包含（100）取向PZT的压电层43和形成在压电层上的顶部电极44。

公开(公告)号：US06571446B2

公开(公告)日：2003-06-03

申请号：US09916747

申请日：2001-07-30

申请人： Hong Qiu ,  Koji Sumi ,  Tsutomu Nishiwaki

发明人： Hong Qiu ,  Koji Sumi ,  Tsutomu Nishiwaki

IPC分类号： H04R1700

CPC分类号： C09K11/06 ,  G01N21/70 ,  Y10T29/42 ,  Y10T29/49156

摘要： A method for manufacturing a piezoelectric element is disclosed. The method includes the steps of forming a lower electrode over a substrate, forming a piezoelectric luminous film over the lower electrode, forming an upper electrode over the piezoelectric film, forming a pressure luminous layer for emitting light upon application of pressure on the upper electrode, and attaching a substrate to the pressure luminous layer—has been inserted as a new abstract.

摘要翻译： 公开了一种制造压电元件的方法。 该方法包括以下步骤：在衬底上形成下电极，在下电极上形成压电发光膜，在压电膜上形成上电极，形成用于在上电极施加压力时发光的压力发光层， 并将基板附着到压力发光层 - 作为新的摘要插入。

公开(公告)号：US06419848B1

公开(公告)日：2002-07-16

申请号：US09518189

申请日：2000-03-02

申请人： Hong Qiu ,  Koji Sumi ,  Tsutomu Nishiwaki ,  Haruo Nakamura

发明人： Hong Qiu ,  Koji Sumi ,  Tsutomu Nishiwaki ,  Haruo Nakamura

IPC分类号： H01L4100

CPC分类号： B41J2/14233 ,  B41J2/161 ,  B41J2/1628 ,  B41J2/1642 ,  B41J2/1645 ,  B41J2/1646 ,  H01L41/0973 ,  H01L41/1875 ,  H01L41/318 ,  Y10T29/42

摘要： A piezoelectric actuator, comprising a stacked structure consisting of a top electrode 5, a piezoelectric film 4, and a bottom electrode 3, wherein the piezoelectric film comprises a first group 42 of piezoelectric ceramic particles and a second group 43 of piezoelectric ceramic particles. A distinctive feature is that the particles constituting the first group of piezoelectric ceramic particles are larger than the jingo particles constituting the second group of piezoelectric ceramic particles, and the first group of piezoelectric ceramic particles and the second group of piezoelectric ceramic particles have mutually different compositions. The piezoelectric actuator can thus be manufactured by an application method in a low-temperature environment, and a thicker piezoelectric film can be obtained. In addition, a highly practical piezoelectric film can be provided by combining the advantages of a plurality of material types.

摘要翻译： 一种压电致动器，包括由顶部电极5，压电膜4和底部电极3组成的堆叠结构，其中压电膜包括压电陶瓷颗粒的第一组42和压电陶瓷颗粒的第二组43。 其特征在于构成第一组压电陶瓷颗粒的颗粒大于构成第二组压电陶瓷颗粒的微型颗粒，并且第一组压电陶瓷颗粒和第二组压电陶瓷颗粒具有相互不同的组成 。 因此，压电致动器可以通过在低温环境中的施加方法制造，并且可以获得更厚的压电膜。 此外，通过组合多种材料的优点，可以提供高度实用的压电膜。

公开(公告)号：US6142615A

公开(公告)日：2000-11-07

申请号：US47432

申请日：1998-03-25

申请人： Hong Qiu ,  Soichi Moriya ,  Hiroyuki Kamei ,  Koji Sumi

发明人： Hong Qiu ,  Soichi Moriya ,  Hiroyuki Kamei ,  Koji Sumi

IPC分类号： B41J2/045 ,  B41J2/055 ,  B41J2/135 ,  B41J2/14 ,  B41J2/16 ,  C04B35/49 ,  C04B35/493 ,  H01L41/09 ,  H01L41/187 ,  H01L41/318 ,  H01L41/39

CPC分类号： B41J2/1628 ,  B41J2/14233 ,  B41J2/161 ,  B41J2/1645 ,  B41J2/1646 ,  H01L41/0973 ,  H01L41/187 ,  B41J2002/14258 ,  B41J2002/14387

摘要： A piezoelectric device for an ink jet print head that has a greater displacement at a low drive voltage. The ink-jet recording head includes a vibration plate, on which is mounted one or more piezoelectric devices that change the volumes of pressure chambers upon application of a voltage. The device is mounted at least on one face of a pressure chamber substrate that is to be filled with ink. Such piezoelectric device includes a second piezoelectric layer having a piezoelectric constant g of a constant value or higher; and a first piezoelectric layer having a dielectric constant of a specific value or higher. Since the piezoelectric constant d of the piezoelectric device correlates with the product of the largest piezoelectric constant g and the largest dielectric device of the piezoelectric devices, a piezoelectric constant d larger than in the conventional case, i.e., having a greater displacement, can be obtained.

摘要翻译： 一种用于喷墨打印头的压电装置，其在低驱动电压下具有较大的位移。 喷墨记录头包括振动板，在该振动板上安装有一个或多个在施加电压时改变压力室体积的压电装置。 装置至少安装在待填充油墨的压力室基板的一个面上。 这种压电装置包括具有恒定值或更高的压电常数g的第二压电层; 以及具有特定值或更高的介电常数的第一压电层。 由于压电元件的压电常数d与压电元件的最大压电常数g和最大电介质器件的乘积相关，所以可以获得比常规情况下更大位移（即具有较大位移）的压电常数d 。

公开(公告)号：US4516183A

公开(公告)日：1985-05-07

申请号：US440603

申请日：1982-11-10

申请人： Tadashi Matsuzaki ,  Koji Sumi

发明人： Tadashi Matsuzaki ,  Koji Sumi

IPC分类号： H02H1/04 ,  H02H3/08 ,  H02H7/26

CPC分类号： H02H1/046 ,  H02H3/08

摘要： An overcurrent relay comprises an input transformer (7), a rectifying circuit (8), a level detecting circuit (9) for providing an operation signal (S.sub.1) when a direct current signal voltage (E) exceeds a predetermined value, a determining means (10 to 15) for determining a time period of at least the positive and negative components of an ac signal voltage (V.sub.1) for providing a determination signal (S.sub.6) when the determined time period exceeds a predetermined time period, and a blocking means (16 and 17) responsive to the determination signal (S.sub.6) for blocking the operation signal (S.sub.1) from being output. In the case where the alternating current input current (I) and the ac signal voltage (V.sub.1) involve an attenuated direct current component due to magnetic saturation of a current transformer and the like, the reset time period of the operation signal (S.sub.1) is prolonged, while that time period of the ac signal voltage (V.sub.1) due to the attenuated direct current component becomes larger than a predetermined value, whereby a determination signal (S.sub. 6) is obtained. As a result, the blocking means (16 and 17) blocks the operation signal (S.sub.1) from being output, whereby a reset operation is performed. Therefore, the reset time period of the output signal (S.sub.7) is shortened.

摘要翻译： 过电流继电器包括输入变压器（7），整流电路（8），电平检测电路（9），用于当直流信号电压（E）超过预定值时提供操作信号（S1）;确定装置 （10至15），用于当所确定的时间段超过预定时间周期时，确定用于提供确定信号（S6）的交流信号电压（V1）的正和负分量的时间段;以及阻塞装置 响应于用于阻止所述操作信号（S1）的输出的所述确定信号（S6）响应于所述确定信号（S16）。 在交流输入电流（I）和交流信号电压（V1）由于电流互感器的磁饱和引起的衰减直流成分等的情况下，操作信号（S1）的复位时间周期为 延长，而由于衰减的直流分量导致的交流信号电压（V1）的时间段变得大于预定值，从而获得确定信号（S 6）。 结果，阻塞装置（16,17）阻止操作信号（S1）的输出，由此进行复位操作。 因此，输出信号（S7）的复位时间周期缩短。