公开(公告)号：US06988300B2

公开(公告)日：2006-01-24

申请号：US10033929

申请日：2001-12-19

申请人： Akira Ando ,  Koichi Hayashi ,  Masahiko Kimura

发明人： Akira Ando ,  Koichi Hayashi ,  Masahiko Kimura

IPC分类号： H04R17/00

CPC分类号： H03H9/178 ,  H01L41/0471 ,  H01L41/0472 ,  H01L41/083 ,  H01L41/257 ,  H03H3/02 ,  Y10T29/42 ,  Y10T29/49005 ,  Y10T29/49011 ,  Y10T29/4902 ,  Y10T29/4908 ,  Y10T29/49126 ,  Y10T29/49155

摘要： A piezoelectric element contains a piezoelectric ceramic body having a layered perovskite structure, and has the C axis selected and oriented in the thickness direction. In the piezoelectric ceramic body, line shaped electrodes are formed perpendicular to the C axis selected and oriented. The electrodes exposed at both of the end faces of the piezoelectric ceramic body are covered with conductive materials and insulation materials. The piezoelectric ceramic body is polarized in the opposite directions on both of the sides of electrodes arranged in the width direction. Moreover, external electrodes are formed on the faces where the conductive materials and the insulation materials are formed, whereby two groups of the electrodes are arranged in an interdigital electrode form.

摘要翻译： 压电元件包含具有层状钙钛矿结构的压电陶瓷体，并且具有沿厚度方向选择并取向的C轴。 在压电陶瓷体中，线状电极垂直于所选定向的C轴形成。 在压电陶瓷体的两个端面上露出的电极被导电材料和绝缘材料覆盖。 压电陶瓷体在沿宽度方向布置的电极的两侧沿相反方向极化。 此外，在形成导电材料和绝缘材料的表面上形成外部电极，由此两组电极以交叉指型电极形式布置。

公开(公告)号：US06423244B1

公开(公告)日：2002-07-23

申请号：US09639600

申请日：2000-08-16

申请人： Takuya Sawada ,  Masahiko Kimura ,  Akira Ando ,  Koichi Hayashi

发明人： Takuya Sawada ,  Masahiko Kimura ,  Akira Ando ,  Koichi Hayashi

IPC分类号： H01B312

CPC分类号： C04B35/453 ,  C04B35/495 ,  H01L41/187

摘要： A piezoelectric ceramic composition mainly contains a component of the formula SrBi2Nb2O9 and includes at least a trivalent metallic element other than Bi constituting the main component in a proportion of more than 0 mol and equal to or less than about 0.15 mol relative to 1 mol of Bi in the main component. This piezoelectric ceramic composition mainly containing SrBi2Nb2O9 is useful as a material for a piezoelectric ceramic device having an improved temperature-dependent factor of resonant frequency. Such a satisfactory piezoelectric ceramic device is also provided using this piezoelectric ceramic composition.

摘要翻译： 压电陶瓷组合物主要含有式SrBi 2 Nb 2 O 9的成分，除了构成主成分的Bi以外的至少三价金属元素，其比例相对于1摩尔的Bi大于0摩尔且等于或小于约0.15摩尔 在主要组成部分。 主要含SrBi2Nb2O9的压电陶瓷组合物可用作具有改善的谐振频率的温度依赖因子的压电陶瓷器件的材料。 使用这种压电陶瓷组合物也提供了这种令人满意的压电陶瓷装置。

公开(公告)号：US06372152B1

公开(公告)日：2002-04-16

申请号：US09643785

申请日：2000-08-22

申请人： Takuya Sawada ,  Masahiko Kimura ,  Akira Ando ,  Koichi Hayashi

发明人： Takuya Sawada ,  Masahiko Kimura ,  Akira Ando ,  Koichi Hayashi

IPC分类号： H01B312

CPC分类号： H01L41/187 ,  C04B35/475

摘要： To provide a piezoelectric ceramic composition predominantly comprising CaBi4Ti4O15, which composition can be fired at 1100° C. or lower, which exhibits an electromechanical coupling coefficient (kt) of a sufficient level for practical use, and which serves as a useful material for producing ceramic piezoelectric devices such as piezoelectric filters, piezoelectric oscillators and piezoelectric transducers, and to provide a ceramic piezoelectric device employing the composition, the piezoelectric ceramic composition comprises a component represented by the formula CaBi4Ti4O15, wherein the composition contains W in an amount of about 0.5 mol or less per mol of Bi.

摘要翻译： 为了提供主要包含CaBi 4 Ti 4 O 15的压电陶瓷组合物，该组合物可以在1100℃或更低的温度下焙烧，其表现出实际使用的足够水平的机电耦合系数（kt），并且其用作生产陶瓷的有用材料 压电陶瓷组合物包括由式CaBi 4 Ti 4 O 15表示的组分，其中组合物含有约0.5mol的量的W或 每摩尔Bi少。

公开(公告)号：US06864621B2

公开(公告)日：2005-03-08

申请号：US10394146

申请日：2003-03-24

申请人： Hirozumi Ogawa ,  Masahiko Kimura ,  Koichi Hayashi ,  Akira Ando

发明人： Hirozumi Ogawa ,  Masahiko Kimura ,  Koichi Hayashi ,  Akira Ando

IPC分类号： C04B35/46 ,  C04B35/462 ,  H01L41/083 ,  H01L41/187 ,  H01L41/22 ,  H01L41/257 ,  H01L41/29 ,  H01L41/312 ,  H01L41/338 ,  H01L41/39 ,  H01L41/43 ,  H03H3/02 ,  H03H9/02 ,  H03H9/17 ,  C04B35/475

CPC分类号： H03H3/02 ,  H01L41/1878 ,  H01L41/273 ,  H03H9/0207 ,  H03H9/178 ,  Y10T29/42

摘要： A laminate type piezoelectric element having an improved piezoelectric property is provided. Vibration electrodes are arranged in a piezoelectric body, and high-order vibration of the thickness vibration is excited. The piezoelectric ceramic includes two ceramic piezoelectric layers which are laminated, and are integrally formed. Each of the ceramic piezoelectric layers contains ceramic crystal grains having shape anisotropy and spontaneous polarization preferentially oriented in one plane. The in-plane direction of this plane is perpendicular to the principal surfaces of the ceramic piezoelectric layers. The ceramic piezoelectric layers are polarized in the same thickness direction.

摘要翻译： 提供了具有改进的压电性能的层叠型压电元件。 振动电极被布置在压电体中，激发厚度振动的高阶振动。 压电陶瓷包括层压并整体形成的两个陶瓷压电层。 每个陶瓷压电层包含具有形状各向异性的陶瓷晶粒和在一个平面中优先取向的自发极化。 该平面的面内方向垂直于陶瓷压电体层的主面。 陶瓷压电层在相同厚度方向上极化。

公开(公告)号：US06391223B1

公开(公告)日：2002-05-21

申请号：US09577087

申请日：2000-05-24

申请人： Takuya Sawada ,  Masahiko Kimura ,  Akira Ando ,  Koichi Hayashi

发明人： Takuya Sawada ,  Masahiko Kimura ,  Akira Ando ,  Koichi Hayashi

IPC分类号： H01B312

CPC分类号： H03H9/178 ,  C04B35/475 ,  H01L41/187

摘要： A piezoelectric ceramic composition that can yield a piezoelectric ceramic capable of being fired at a temperature as low as 1100° C. or below and exhibiting an electromechanical coupling coefficient sufficient for providing a piezoelectric ceramic element for practical use, and a piezoelectric ceramic element using the same, wherein the piezoelectric ceramic composition comprises a principal component represented by a general formula of CaBi4(Ti1−ySiy)4O15 with y within the range of 0

摘要翻译： 一种压电陶瓷组合物，其可以产生能够在低至1100℃或更低的温度下烧制并表现出足以提供用于实际使用的压电陶瓷元件的机电耦合系数的压电陶瓷，以及使用 相同，其中压电陶瓷组合物包含由通式CaBi 4（Ti 1-y Si y）4 O 15表示的主成分，y在0

公开(公告)号：US06258291B1

公开(公告)日：2001-07-10

申请号：US09499220

申请日：2000-02-07

申请人： Masahiko Kimura ,  Akira Ando ,  Takuya Sawada ,  Koichi Hayashi

发明人： Masahiko Kimura ,  Akira Ando ,  Takuya Sawada ,  Koichi Hayashi

IPC分类号： H01B312

CPC分类号： H01L41/187 ,  C04B35/495

摘要： A lead-free piezoelectric ceramic composition is composed of a main component represented by the general formula (Sr1−xM1x)Bi2(Nb1−yWy)2O9, wherein M1 is one of divalent metals other than Sr and trivalent metals other than Bi, 0

摘要翻译： 无铅压电陶瓷组合物由通式（Sr1-xM1x）Bi2（Nb1-yWy）2O9表示的主要成分构成，其中M1是Sr以外的二价金属和Bi以外的三价金属之一， x <= 0.3，0

公开(公告)号：US06690246B2

公开(公告)日：2004-02-10

申请号：US10189125

申请日：2002-07-03

申请人： Masahiko Kimura ,  Akira Ando ,  Takuya Sawada ,  Koichi Hayashi

发明人： Masahiko Kimura ,  Akira Ando ,  Takuya Sawada ,  Koichi Hayashi

IPC分类号： H03B532

CPC分类号： H03B5/36

摘要： A feedback circuit and amplifiers using a vibrator comprising a piezoelectric body having a bismuth layered compound as the main ingredient thereof are provided so as to generate oscillation. Load capacitors comprising the feedback circuit together with the vibrator are formed. These load capacitors each have, as the main ingredient thereof, a dielectric body which decreases in the relative dielectric constant with the increase in temperature in the region not less than one half the temperature range from −20 to 80° C., and in which the &egr;-TC is not less than 5000 ppm/° C., wherein the &egr;-TC is an average change rate of the relative dielectric constant in the above-described temperature range and is represented by (Cmax−Cmin)/(C20·100), where Cmax is the maximum value of capacitance in the above-described temperature range, Cmin is the minimum value of capacitance in the above-described temperature range, and C20 is the capacitance at 20° C.

摘要翻译： 使用包括具有铋层状化合物作为其主要成分的压电体的振动器的反馈电路和放大器被设置成产生振荡。 形成包括反馈电路的负载电容器与振子。 这些负载电容器作为其主要成分，其绝缘体的相对介电常数随着温度的升高而降低，该温度范围不低于-20至80℃的温度范围的一半，其中 ε-TC不小于5000ppm /℃，其中ε-TC是在上述温度范围内的相对介电常数的平均变化率，由（Cmax-Cmin）/（C20）表示。 100），其中Cmax是上述温度范围内电容的最大值，Cmin是上述温度范围内电容的最小值，C20是20℃时的电容。

公开(公告)号：US06383411B1

公开(公告)日：2002-05-07

申请号：US09639593

申请日：2000-08-16

申请人： Takuya Sawada ,  Masahiko Kimura ,  Akira Ando ,  Koichi Hayashi

发明人： Takuya Sawada ,  Masahiko Kimura ,  Akira Ando ,  Koichi Hayashi

IPC分类号： H01B312

CPC分类号： H03H9/178 ,  C04B35/453 ,  C04B35/495 ,  H01L41/187

摘要： A piezoelectric ceramic composition mainly contains a component of the formula SrBi2Nb2O9 and includes Si in a proportion of more than 0 mol and equal to or less than about 0.3 mol relative to 1 mol of Bi in the main component of the formula. This piezoelectric ceramic composition can be fired at lower temperatures, exhibits a practicable electromechanical coefficient kt even when fired at firing temperatures of 1100 ° C. or less, and is useful as materials for piezoelectric ceramic filters, piezoelectric ceramic oscillators, piezoelectric ceramic resonators, and other piezoelectric ceramic devices. By using the piezoelectric ceramic composition, satisfactory piezoelectric ceramics can be obtained.

摘要翻译： 压电陶瓷组合物主要包含式SrBi 2 Nb 2 O 9的组分，并且包含相对于式中主要成分中的Bi的1摩尔大于0摩尔且等于或小于约0.3摩尔的Si。 该压电陶瓷组合物可以在较低温度下烧制，即使在1100℃或更低的烧制温度下烧制时也可实现机电系数kt，并且可用作压电陶瓷过滤器，压电陶瓷振荡器，压电陶瓷谐振器和 其他压电陶瓷器件。 通过使用压电陶瓷组合物，可以获得令人满意的压电陶瓷。

公开(公告)号：US06248254B1

公开(公告)日：2001-06-19

申请号：US09500011

申请日：2000-02-08

申请人： Masahiko Kimura ,  Akira Ando ,  Takuya Sawada ,  Koichi Hayashi

发明人： Masahiko Kimura ,  Akira Ando ,  Takuya Sawada ,  Koichi Hayashi

IPC分类号： H01B312

CPC分类号： C04B35/465 ,  C04B35/475 ,  H01L41/187

摘要： A piezoelectric ceramic composition is composed of a main component represented by the general formula (Ca1-xM1x)Bi4Ti4O15 wherein M1 is one of divalent metals other than Ca and trivalent metals other than Bi, and 0

摘要翻译： 压电陶瓷组合物由通式（Ca1-xM1x）Bi4Ti4O15表示的主要成分组成，其中M1是除Ca以外的二价金属和除Bi以外的三价金属之一，0

公开(公告)号：US06424080B1

公开(公告)日：2002-07-23

申请号：US09773951

申请日：2001-02-01

申请人： Akira Ando ,  Koichi Hayashi ,  Masahiko Kimura

发明人： Akira Ando ,  Koichi Hayashi ,  Masahiko Kimura

IPC分类号： H01L41187

摘要： A piezoelectric element contains a piezoelectric ceramic body having a layered perovskite structure, and has the C axis selected and oriented in the thickness direction. In the piezoelectric ceramic body, line shaped electrodes are formed perpendicular to the C axis selected and oriented. The electrodes exposed at both of the end faces of the piezoelectric ceramic body are covered with conductive materials and insulation materials. The piezoelectric ceramic body is polarized in the opposite directions on both of the sides of electrodes arranged in the width direction. Moreover, external electrodes are formed on the faces where the conductive materials and the insulation materials are formed, whereby two groups of the electrodes are arranged in an interdigital electrode form.