专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06515401B1 Piezoelectric resonator 有权
标题翻译：压电谐振器
公开(公告)号：US06515401B1
公开(公告)日：2003-02-04
申请号：US09699763
申请日：2000-10-30
申请人： Akira Ando , Masahiko Kimura , Takuya Sawada , Jiro Inoue , Hiroaki Kaida , Toru Nagae
发明人： Akira Ando , Masahiko Kimura , Takuya Sawada , Jiro Inoue , Hiroaki Kaida , Toru Nagae
IPC分类号： H01L4104
CPC分类号： H03H9/177 , H03H9/0207 , H03H9/178
摘要： A piezoelectric resonator which achieves a compact oscillator with high performance having high thermal resistance and a narrow tolerance includes an element body having an excitation layer and a non-excitation layer. One vibration electrode is provided on the surface of the excitation layer and another vibration electrode is provided between the excitation layer and the non-excitation layer. The two vibration electrodes extend from opposing ends of the excitation layer toward the approximate central portion thereof so as to oppose each other at the approximate central portion of the excitation layer. On end-surfaces of the element body, end-surface electrodes are connected to the vibration electrodes, respectively.
摘要翻译：实现具有高耐热性和窄公差的高性能的紧凑型振荡器的压电谐振器包括具有激发层和非激励层的元件体。在激励层的表面上设置一个振动电极，在激励层和非激励层之间设置另一个振动电极。两个振动电极从激励层的相对端向其近似中心部分延伸，以在激发层的大致中心部分彼此相对。在元件体的端面上，端面电极分别连接到振动电极。

2. 发明授权

US06534902B2 Piezoelectric device 失效
公开(公告)号：US06534902B2
公开(公告)日：2003-03-18
申请号：US10085043
申请日：2002-03-01
申请人： Masahiko Kimura , Akira Ando , Takuya Sawada , Hirozumi Ogawa
发明人： Masahiko Kimura , Akira Ando , Takuya Sawada , Hirozumi Ogawa
IPC分类号： H01L4108
CPC分类号： H03H9/177 , C04B35/475 , C04B35/6262 , C04B2235/3208 , C04B2235/604 , C04B2235/787 , H01L41/1878 , H03H9/02031 , H03H9/02157
摘要： A piezoelectric device having an electromechanical coefficient, which can be applied to practical uses, is obtained by an energy-trapping effect using a piezoelectric ceramic having a layered perovskite structure provided with high-temperature resistance and little high-frequency loss. The piezoelectric device has a substrate formed of a piezoelectric ceramic having a layered perovskite structure. The c-axis in the substrate is preferentially oriented in the width direction thereof, and the substrate is polarized in the longitudinal direction. Two electrodes are formed on both main surfaces of the substrate so as to oppose each other in the vicinity of the central part thereof. As a material used for the substrate, a piezoelectric ceramic composition primarily composed of a ceramic composition represented by the general formula CaBi4Ti4O15 is preferably used.

3. 发明授权

US06369488B1 Piezoelectric device 有权
标题翻译：压电元件
公开(公告)号：US06369488B1
公开(公告)日：2002-04-09
申请号：US09667139
申请日：2000-09-21
申请人： Akira Ando , Masahiko Kimura , Takuya Sawada
发明人： Akira Ando , Masahiko Kimura , Takuya Sawada
IPC分类号： H01L4108
CPC分类号： H03H9/177 , C04B35/475 , C04B35/495 , C04B2235/3208 , C04B2235/3213 , C04B2235/3262 , C04B2235/3298 , C04B2235/76 , H01L41/187 , H03H9/02015 , H03H9/0207 , H03H9/02102
摘要： A piezoelectric device operable to excite a thickness extensional third harmonic vibration is provided, which can realize a high performance oscillator with an excellent thermal stability. The piezoelectric device includes a piezoelectric substrate. The piezoelectric substrate is formed from a piezoelectric material containing as major components Sr, Bi, Nb, and O. Vibration electrodes are formed on both of the surfaces of the piezoelectric substrate. The range lying between the vibration electrodes and defined by the overlapped vibration electrodes constitutes an energy trapping range. The value L/t is set to be less than 9, in which L represents the length of the longest secant extending between intersections on the periphery of the energy confining region and t represents the distance between the vibration electrodes.
摘要翻译：提供了可激发厚度延伸三次谐波振动的压电装置，其可以实现具有优异热稳定性的高性能振荡器。压电元件包括压电基片。压电基板由主要成分为Sr，Bi，Nb，O的压电材料形成。振动电极形成在压电基板的两面上。在振动电极之间并由重叠的振动电极限定的范围构成能量捕获范围。值L / t设定为小于9，其中L表示在能量限制区域的周边上的交点之间延伸的最长割线的长度，t表示振动电极之间的距离。

4. 发明授权

US06700303B2 Piezoelectric element 有权
标题翻译：压电元件
公开(公告)号：US06700303B2
公开(公告)日：2004-03-02
申请号：US10322936
申请日：2002-12-18
申请人： Akira Ando , Masahiko Kimura , Takuya Sawada
发明人： Akira Ando , Masahiko Kimura , Takuya Sawada
IPC分类号： H01L4108
CPC分类号： H03H9/178 , B06B1/0611 , H03H9/02031 , H03H9/02086 , H03H9/132
摘要： A piezoelectric element includes a plurality of piezoelectric layers composed of a piezoelectric material containing Sr, Bi, Ti, and O, at least three vibration electrodes opposing each other, each disposed among the piezoelectric layers, and an energy-confining region formed in a region in which the vibration electrodes overlap, the energy-confining region being parallel to the planes of the vibration electrodes and exciting an n-th order longitudinal thickness vibration. The maximum length L of a secant between two intersections on the periphery of the energy-confining region and the distance t between the topmost vibration electrode and the bottommost vibration electrode satisfy the relationship nL/t of less than 10. The piezoelectric element is thermally stable and has a narrow allowable error.
摘要翻译：压电元件包括由压电材料构成的多个压电层，所述压电材料包含Sr，Bi，Ti和O，至少三个彼此相对的振动电极，各自设置在压电层中，并且形成在区域中的能量限制区域其中振动电极重叠，能量限制区域平行于振动电极的平面并激发n阶纵向厚度的振动。能量约束区域周边的两个交叉点之间的割线的最大长度L和最上面的振动电极与最底部振动电极之间的距离t满足小于10的关系nL / t。压电元件是热稳定的并且具有窄的允许误差。

5. 发明授权

US07750541B2 Piezoelectric ceramic and method for making the same, and piezoelectric resonator and method for making the same 有权
标题翻译：压电陶瓷及其制造方法，以及压电谐振器及其制造方法
公开(公告)号：US07750541B2
公开(公告)日：2010-07-06
申请号：US12147173
申请日：2008-06-26
申请人： Hirozumi Ogawa , Takuya Sawada , Masahiko Kimura , Kosuke Shiratsuyu , Akira Ando
发明人： Hirozumi Ogawa , Takuya Sawada , Masahiko Kimura , Kosuke Shiratsuyu , Akira Ando
IPC分类号： H01L41/187
CPC分类号： H01L41/43 , H01L41/1878 , H03H9/02031 , H03H9/02102 , H03H9/176 , H03H9/178 , Y10T29/42
摘要： A piezoelectric ceramic whose resonance frequency temperature characteristic can be easily adjusted is provided. It contains first and second parts (11 and 12) which can be alternately stacked layers. The first and second parts (11 and 12) are each composed of a compound having a bismuth layer structure, such as a complex oxide containing at least Sr, Bi, and Nb, and have degrees of c-axis orientation different from each other. Since the resonance frequency temperature characteristics change according to the degree of orientation, the first and second parts (11 and 12) having different degrees of orientation are appropriately combined so that the resonance frequency temperature characteristics of the piezoelectric ceramic (2) as a whole is easily adjusted.
摘要翻译：提供了可以容易地调节共振频率温度特性的压电陶瓷。它包含可以交替层叠的第一和第二部分（11和12）。第一和第二部分（11和12）各自由具有铋层结构的化合物组成，例如至少含有Sr，Bi和Nb的复合氧化物，并且具有彼此不同的c轴取向度。由于谐振频率温度特性根据取向度而变化，所以具有不同取向度的第一和第二部分（11和12）被适当组合，使得压电陶瓷（2）整体的谐振频率温度特性为容易调整

6. 发明授权

US06690246B2 Oscillator and production method therefor 有权
标题翻译：振荡器及其制作方法
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。

7. 发明授权

US06548941B2 Piezoelectric element 失效
公开(公告)号：US06548941B2
公开(公告)日：2003-04-15
申请号：US10188974
申请日：2002-07-03
申请人： Takuya Sawada , Masahiko Kimura , Akira Ando
发明人： Takuya Sawada , Masahiko Kimura , Akira Ando
IPC分类号： H01L4108
CPC分类号： H01L41/187 , H01L41/0477
摘要： A piezoelectric element includes a plurality of piezoelectric layers which contain a bismuth layer compound as the main component of the piezoelectric ceramic composition. The piezoelectric layers are provided with electrodes containing Pd as a main component so that the piezoelectric layers vibrate. At least one of the electrodes and the piezoelectric ceramic composition contains Ag.

8. 发明授权

US06383411B1 Piezoelectric ceramic composition and piezoelectric ceramic device using the same 失效
标题翻译：压电陶瓷组合物和使用其的压电陶瓷装置
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。

9. 发明授权

US06248254B1 Piezoelectric ceramic composition and piezoelectric ceramic device using the same 有权
标题翻译：压电陶瓷组合物和使用其的压电陶瓷装置
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

10. 发明申请

US20080284286A1 PIEZOELECTRIC CERAMIC AND METHOD FOR MAKING THE SAME, AND PIEZOELECTRIC RESONATOR AND METHOD FOR MAKING THE SAME 有权
标题翻译：压电陶瓷及其制造方法，压电谐振器及其制造方法
公开(公告)号：US20080284286A1
公开(公告)日：2008-11-20
申请号：US12147173
申请日：2008-06-26
申请人： Hirozumi Ogawa , Takuya Sawada , Masahiko Kimura , Kosuke Shiratsuyu , Akira Ando
发明人： Hirozumi Ogawa , Takuya Sawada , Masahiko Kimura , Kosuke Shiratsuyu , Akira Ando
IPC分类号： H01L41/083 , H01L41/24 , H01L41/187
CPC分类号： H01L41/43 , H01L41/1878 , H03H9/02031 , H03H9/02102 , H03H9/176 , H03H9/178 , Y10T29/42
摘要： A piezoelectric ceramic whose resonance frequency temperature characteristic can be easily adjusted is provided. It contains first and second parts (11 and 12) which can be alternately stacked layers. The first and second parts (11 and 12) are each composed of a compound having a bismuth layer structure, such as a complex oxide containing at least Sr, Bi, and Nb, and have degrees of c-axis orientation different from each other. Since the resonance frequency temperature characteristics change according to the degree of orientation, the first and second parts (11 and 12) having different degrees of orientation are appropriately combined so that the resonance frequency temperature characteristics of the piezoelectric ceramic (2) as a whole is easily adjusted.
摘要翻译：提供了可以容易地调节共振频率温度特性的压电陶瓷。它包含可以交替层叠的第一和第二部分（11和12）。第一和第二部分（11和12）各自由具有铋层结构的化合物组成，例如至少含有Sr，Bi和Nb的复合氧化物，并且具有彼此不同的c轴取向度。由于谐振频率温度特性根据取向度而变化，所以具有不同取向度的第一和第二部分（11和12）被适当组合，使得压电陶瓷（2）整体的谐振频率温度特性为容易调整

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式