公开(公告)号：US06351055B1

公开(公告)日：2002-02-26

申请号：US09536003

申请日：2000-03-23

申请人： Tomoaki Futakuchi ,  Hisayuki Hashimoto

发明人： Tomoaki Futakuchi ,  Hisayuki Hashimoto

IPC分类号： H01L4104

CPC分类号： H03H9/581

摘要： A composite piezoelectric component includes a plurality of piezoelectric resonant elements. Each of the plurality of piezoelectric resonant elements includes a substrate having a first major surface and a second major surface disposed opposite to each other. A pair of vibrating electrodes is disposed on the first and second major surfaces, respectively, so as to oppose each other with the substrate disposed therebetween. A ground electrode which is connected to ground is disposed on at least one of the first and second major surfaces. The plurality of piezoelectric resonant elements are stacked on each other so that the major surface of one substrate opposes the major surface of another substrate. A conductive joining member electrically connects at least two of the vibrating electrodes and the ground electrode of the plurality of piezoelectric resonant elements and mechanically bonds the stacked piezoelectric resonant elements. Each of the substrates of the of the piezoelectric resonant elements other than the piezoelectric resonant element located on the top portion includes a plurality of piezoelectric substrate portions, a conductive material portion arranged between the plurality of piezoelectric substrate portions, with the ground electrodes being provided on the first and second major surfaces of the substrate in the conductive material portion. The plurality of ground electrodes of the piezoelectric resonant elements are electrically connected to one another via the conductive material portions and the conductive joining members.

摘要翻译： 复合压电元件包括​​多个压电谐振元件。 多个压电谐振元件中的每一个包括具有彼此相对设置的第一主表面和第二主表面的基板。 一对振动电极分别设置在第一和第二主表面上，以便彼此相对地放置基板。 连接到地面的接地电极设置在第一和第二主表面中的至少一个上。 多个压电谐振元件彼此堆叠，使得一个衬底的主表面与另一衬底的主表面相对。 导电接合部件电连接多个压电谐振元件中的至少两个振动电极和接地电极，并机械地结合堆叠的压电谐振元件。 压电谐振元件以外的位于顶部的压电谐振元件的基板中的每一个基板包括多个压电基板部分，布置在多个压电基板部分之间的导电材料部分，其中接地电极设置在 导电材料部分中基片的第一和第二主表面。 压电谐振元件的多个接地电极经由导电材料部分和导电接合部件彼此电连接。

公开(公告)号：US5808522A

公开(公告)日：1998-09-15

申请号：US661036

申请日：1996-06-10

申请人： Tomoaki Futakuchi ,  Masao Gamo ,  Hisayuki Hashimoto

发明人： Tomoaki Futakuchi ,  Masao Gamo ,  Hisayuki Hashimoto

IPC分类号： H03H9/58 ,  H03H9/05 ,  H03H9/54 ,  H03H9/56 ,  H03H9/60 ,  H03H9/02

CPC分类号： H03H9/0542 ,  H03H9/56

摘要： A thickness shear vibration type double mode filter includes two or more vibrating elements disposed in parallel on a piezoelectric substrate and a coupling capacitor formed on the piezoelectric substrate at a position intermediate two of the vibrating elements. The coupling capacity includes a capacitor electrode formed on one main surface of the piezoelectric substrate and an opposing ground electrode formed on a second main surface of the substrate. Input/output electrodes of the vibrating elements are formed on the same surface of the piezoelectric substrate as the capacitor electrode. A damper formed of a resin material on which no solder adheres is formed on top of the capacitor electrode and has sufficient mass to suppress undesired vibration in the area of the coupling capacitor.

摘要翻译： 厚度剪切振动型双模式滤波器包括平行设置在压电基板上的两个或更多个振动元件和在两个振动元件之间的位置处形成在压电基板上的耦合电容器。 耦合容量包括形成在压电基板的一个主表面上的电容器电极和形成在基板的第二主表面上的相对的接地电极。 振动元件的输入/输出电极形成在压电基片的与电容器电极相同的表面上。 由电容器电极的顶部上形成有焊料粘附的树脂材料形成的阻尼器，并且具有足够的质量以抑制耦合电容器的区域中的不期望的振动。

公开(公告)号：US6087758A

公开(公告)日：2000-07-11

申请号：US116635

申请日：1998-07-16

申请人： Taketoshi Hino ,  Tomoaki Futakuchi ,  Yoshikatsu Maeda

发明人： Taketoshi Hino ,  Tomoaki Futakuchi ,  Yoshikatsu Maeda

IPC分类号： H03H9/17 ,  H03H9/54 ,  H03H9/56 ,  H01L41/08

CPC分类号： H03H9/56

摘要： A piezoelectric vibration device is constructed to suppress interference between resonance sections and achieve a satisfactory resonance characteristic and sufficient mechanical strength. In the piezoelectric vibration device, a plurality of resonance sections are provided on a piezoelectric substrate and a slit is provided so as to extend from one side of the piezoelectric substrate toward a center thereof in order to suppress interference between the resonance sections. If the length of the slit is denoted as a, the gap width along the opposing direction of the first and second resonance electrodes in the resonance section as g, the distance from the center of the gap to the nearest side of the piezoelectric substrate and the sides of the slit as L.sub.1, and the external dimension of the piezoelectric substrate along one direction as L, then the expression L.sub.1 -g/2=b, b

摘要翻译： 构造压电振动装置，以抑制共振部之间的干涉，并实现令人满意的共振特性和足够的机械强度。 在压电振动装置中，在压电基板上设置多个共振部，并且从压电基板的一侧朝向其中心设置狭缝，以抑制谐振部之间的干涉。 如果狭缝的长度被表示为a，则沿着谐振区域中的第一和第二谐振电极的相反方向的间隙宽度为g，从压电基板的间隙中心到最近侧的距离以及 狭缝的边缘为L1，压电基板的沿一个方向的外部尺寸为L，则表达式L1-g / 2 = b，b

公开(公告)号：US5815053A

公开(公告)日：1998-09-29

申请号：US136969

申请日：1993-10-14

申请人： Tomoaki Futakuchi

发明人： Tomoaki Futakuchi

IPC分类号： H03H9/54 ,  H03H9/56

CPC分类号： H03H9/562

摘要： In an energy trapping type ceramic filter vibrating in the thickness shear-slide mode, vibrating electrodes are formed on opposite sides of a piezoelectric ceramic substrate, while an input terminal electrode and an output terminal electrode are provided on both end portions of the substrate so that lead terminals are soldered to the terminal electrodes. A distance l.sub.5 between the input terminal electrode and the adjacent vibrating electrode and a distance l.sub.6 between the output terminal electrode and the adjacent vibrating electrode are set within a range of one to three times the thickness of the substrate. Thus, it is possible to suppress undesired vibration other than principal vibration, thereby improving filter characteristics.

摘要翻译： 在以厚度剪切滑动模式振动的能量捕获型陶瓷过滤器中，在压电陶瓷基板的相对侧形成振动电极，而在基板的两端部设置输入端子电极和输出端子电极， 引线端子焊接到端子电极。 输入端子电极和相邻的振动电极之间的距离l5和输出端子电极与相邻的振动电极之间的距离l6设定在基板的厚度的1到3倍的范围内。 因此，可以抑制主振动以外的不希望的振动，从而提高滤波器特性。

公开(公告)号：US6064282A

公开(公告)日：2000-05-16

申请号：US116354

申请日：1998-07-16

申请人： Tomoaki Futakuchi ,  Kunio Sawai ,  Taketoshi Hino

发明人： Tomoaki Futakuchi ,  Kunio Sawai ,  Taketoshi Hino

IPC分类号： H03H9/17 ,  H03H9/05 ,  H03H9/10 ,  H03H9/54 ,  H03H9/56

CPC分类号： H03H9/56 ,  H03H9/0561 ,  H03H9/1035

摘要： A piezoelectric filter has a significantly reduced size and a sufficient coupling capacitance while avoiding an uneven outer configuration of an overall shape of the filter. The piezoelectric filter includes a first resonating unit and a second resonating unit and a coupling capacitance unit disposed in a piezoelectric substrate. The coupling capacitance unit is provided with a first coupling capacitance electrode located on an upper surface of the piezoelectric substrate and a second coupling capacitance electrode located on a lower surface thereof and the first and second coupling capacitance electrodes are arranged to extend to side edge surfaces of the piezoelectric substrate.

摘要翻译： 压电滤波器具有显着减小的尺寸和足够的耦合电容，同时避免滤波器的整体形状的不均匀外部构造。 压电滤波器包括第一谐振单元和第二谐振单元以及设置在压电基板中的耦合电容单元。 耦合电容单元设置有位于压电基板的上表面上的第一耦合电容电极和位于其下表面上的第二耦合电容电极，并且第一和第二耦合电容电极被布置成延伸到 压电基板。

公开(公告)号：US4562404A

公开(公告)日：1985-12-31

申请号：US631995

申请日：1984-07-18

申请人： Tomoaki Futakuchi

发明人： Tomoaki Futakuchi

IPC分类号： H04B1/16 ,  H03D3/06 ,  H03D3/16

CPC分类号： H03D3/16

摘要： The disclosure is directed to an improved FM demodulating circuit which is simple in circuit construction, with a small number of parts required, and so arranged that in a quadrature detecting circuit, a plurality of piezoelectric resonators, for example, ceramic discriminators employed for a phase shift circuit are changed over by switching circuits for common use of parts other than the ceramic discriminators for the demodulation of the FM intermediate frequency signals.

摘要翻译： 本公开涉及一种改进的FM解调电路，其简单的电路结构，需要少量部件，并且被布置为在正交检测电路中设置多个压电谐振器，例如用于相位的陶瓷鉴别器 移位电路通过用于通常使用用于解调FM中频信号的陶瓷鉴别器以外的部件的切换电路来切换。