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1. 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

2. 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

3. 发明授权

US06734606B2 Piezoelectric ceramic composition and piezoelectric ceramic element 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元件
公开(公告)号：US06734606B2
公开(公告)日：2004-05-11
申请号：US10300584
申请日：2002-11-21
申请人： Masahiko Kimura , Hirozumi Ogawa , Takuya Sawada , Akira Ando
发明人： Masahiko Kimura , Hirozumi Ogawa , Takuya Sawada , Akira Ando
IPC分类号： H01L41187
CPC分类号： C04B35/495 , C04B2235/3213 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3251 , C04B2235/3262 , C04B2235/3298 , C04B2235/604 , H01L41/187
摘要： A piezoelectric ceramic composition includes a bismuth layered compound containing Sr, Bi, Nb and a metal element other than Bi having a valence of 3. The bismuth layered compound satisfies the relational expressions: 0.275
摘要翻译：压电陶瓷组合物包括含有Sr，Bi，Nb的铋层状化合物和具有化合价3的Bi以外的金属元素。铋层状化合物满足关系式：0.275

4. 发明授权

US06445110B1 Piezoelectric device 失效
公开(公告)号：US06445110B1
公开(公告)日：2002-09-03
申请号：US09578131
申请日：2000-05-24
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： H01L4104
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.

5. 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.

6. 发明授权

US06767503B2 Method of producing ceramic 失效
标题翻译：陶瓷生产方法
公开(公告)号：US06767503B2
公开(公告)日：2004-07-27
申请号：US10141363
申请日：2002-05-07
申请人： Hirozumi Ogawa , Masahiko Kimura , Akira Ando
发明人： Hirozumi Ogawa , Masahiko Kimura , Akira Ando
IPC分类号： B28B3800
CPC分类号： C04B35/645 , B28B1/002 , B28B11/00 , B32B18/00 , B32B37/0046 , B32B2309/022 , C04B35/475 , C04B35/495 , C04B35/497 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3231 , C04B2235/3232 , C04B2235/3251 , C04B2235/3258 , C04B2235/3262 , C04B2235/3296 , C04B2235/3298 , C04B2235/5292 , C04B2235/5296 , C04B2235/6025 , C04B2235/77 , C04B2235/787 , C04B2237/704
摘要： A ceramic powder of grains having a shape-anisotropy is mixed with a calcined or uncalcined (or both) powder of a ceramic raw material. A ceramic slurry containing the produced mixed powder, a solvent and a binder is prepared and the ceramic slurry is formed into a sheet. A laminate comprised of a plurality of the sheets laminated to each other is uniaxially pressed to form an oriented product in such a manner that the length of the laminate in the direction parallel to the pressing axis becomes larger than that before the pressing, and the area of a plane perpendicular to the pressing axis of the laminate becomes larger than that before the pressing. The oriented formed product is fired and sintered.
摘要翻译：将具有形状各向异性的颗粒的陶瓷粉末与陶瓷原料的煅烧或未煅烧（或两者）粉末混合。制备含有所制备的混合粉末，溶剂和粘合剂的陶瓷浆料，并将陶瓷浆料形成为片材。将由多个彼此层压的片材组成的层叠体单轴压制，以使层叠体在与按压轴平行的方向上的长度变得比压制前的长度大的方式形成取向品，垂直于层叠体的按压轴的平面的尺寸大于按压之前的平面。定向成型的产品被烧制和烧结。

7. 发明授权

US06753642B2 Piezoelectric ceramic and piezoelectric ceramic element including the same 有权
标题翻译：压电陶瓷和压电陶瓷元件包括它们
公开(公告)号：US06753642B2
公开(公告)日：2004-06-22
申请号：US10130675
申请日：2002-05-22
申请人： Hirozumi Ogawa , Masahiko Kimura , Akira Ando
发明人： Hirozumi Ogawa , Masahiko Kimura , Akira Ando
IPC分类号： H01L41187
CPC分类号： B32B18/00 , C04B35/465 , C04B35/475 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3244 , C04B2235/3262 , C04B2235/3296 , C04B2235/6025 , C04B2237/704 , H01L41/187
摘要： In a piezoelectric ceramic containing a bismuth layer compound containing Ca, Bi, Ti, and O, as a main component, the molar ratio of Ca to Bi to Ti in the bismuth layer compound, which is the main component, is represented by a:b:c and formulas 0.15≦a/c
摘要翻译：在以含有Ca，Bi，Ti和O的铋层化合物为主要成分的压电陶瓷中，作为主要成分的铋层化合物中的Ca与Bi与Ti的摩尔比由下式表示： b：c和式0.15 <= a / c <0.25和3.5 <=（2a + 3b）/ c <= 3.88。

8. 发明授权

US07049731B2 Piezoelectric ceramic composition and piezoelectric ceramic device composed of same 有权
标题翻译：压电陶瓷组合物与压电陶瓷器件相同
公开(公告)号：US07049731B2
公开(公告)日：2006-05-23
申请号：US10831195
申请日：2004-04-26
申请人： Hirozumi Ogawa , Masahiko Kimura , Tatsuya Yamaguchi , Akira Ando
发明人： Hirozumi Ogawa , Masahiko Kimura , Tatsuya Yamaguchi , Akira Ando
IPC分类号： H01L41/187 , C04B35/01
CPC分类号： C04B35/495 , B32B18/00 , B32B2311/06 , C04B2235/3201 , C04B2235/3203 , C04B2235/3213 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3251 , C04B2235/3262 , C04B2235/3298 , C04B2235/6025 , C04B2237/345 , C04B2237/40 , C04B2237/408 , C04B2237/704 , H01L41/187
摘要： A piezoelectric ceramic composition that is based on a layered bismuth compound composed of Sr, Bi, Nb, oxygen, contains an additional monovalent metallic element. The piezoelectric ceramic composition has an elevated Curie point, is highly reliable at higher temperatures, that is, minimizes the reduction in the piezoelectric effect, and is useful as a material for piezoelectric ceramic devices that contain little or no lead or lead compounds. The layered bismuth compound contains not more than about 0.125 mol and more than 0 mol of the monovalent metallic element for 1 mol of Nb.
摘要翻译：基于由Sr，Bi，Nb，氧组成的层状铋化合物的压电陶瓷组合物含有额外的一价金属元素。压电陶瓷组合物具有升高的居里点，在较高温度下是高度可靠的，即最小化压电效应的降低，并且作为含有很少或不含铅或铅化合物的压电陶瓷器件的材料是有用的。层状铋化合物对于1摩尔Nb含有不超过约0.125摩尔和大于0摩尔的一价金属元素。

9. 发明授权

US06864621B2 Piezoelectric element and method for manufacturing the same 失效
标题翻译：压电元件及其制造方法
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。

10. 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。

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