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    Piezoelectric ceramic material
    1.
    发明授权
    Piezoelectric ceramic material 有权
    压电陶瓷材料

    公开(公告)号：US06461532B1

    公开(公告)日：2002-10-08

    申请号：US09696960

    申请日：2000-10-27

    申请人： Hitoshi Oka ,  Masakazu Hirose ,  Yasuo Watanabe ,  Junji Terauchi

    发明人： Hitoshi Oka ,  Masakazu Hirose ,  Yasuo Watanabe ,  Junji Terauchi

    IPC分类号： C04B35462

    CPC分类号： H01L41/187 ,  C04B35/475

    摘要： A piezoelectric ceramic material comprising a bismuth layer compound containing MII, Bi, Ti and O wherein MII is selected from Sr, Ba and Ca, and containing MIIBi4Ti4O15 type crystals, wherein MII, is represented by SrxBayCaz wherein x+y+z=1, utilizes thickness shear vibration when 0≦x≦ 1, 0≦y≦0.9, and 0≦z≦1, and thickness extensional vibration when 0≦x

    摘要翻译： 一种包含含有MII，Bi，Ti和O的铋层化合物的压电陶瓷材料，其中MII选自Sr，Ba和Ca，并含有MIIBi4Ti4O15型晶体，其中MII由SrxBayCaz表示，其中x + y + z = 1， 当0 <= x <= 1，0 <= y <= 0.9，0 <= z <= 1时使用厚度剪切振动，当0 <= x <0.9,0 <= y <= 0.9时， 0 <= z <1。 还提供了包含含有Ca，Bi，Ti，Ln和0的铋层化合物的压电陶瓷材料，其中Ln是镧系元素，并且含有CaBi 4 Ti 4 O 15型晶体，其中原子比Ln /（Ln + Ca）在以下范围内： 0

    Piezoelectric Ceramics and Piezoelectric Element
    4.
    发明申请
    Piezoelectric Ceramics and Piezoelectric Element 审中-公开
    压电陶瓷和压电元件

    公开(公告)号：US20070257228A1

    公开(公告)日：2007-11-08

    申请号：US10581277

    申请日：2004-12-03

    申请人： Takeo Tsukada ,  Tomohisa Azuma ,  Masakazu Hirose ,  Hitoshi Oka

    发明人： Takeo Tsukada ,  Tomohisa Azuma ,  Masakazu Hirose ,  Hitoshi Oka

    IPC分类号： H01L41/083

    CPC分类号： C04B35/475 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3224 ,  C04B2235/3227 ,  H01L41/187

    摘要： A piezoelectric ceramics having ceramic particles, wherein said ceramic particles comprises bismuth layer compound containing at least Sr, Ln (note that Ln is a lanthanoid element), Bi, Ti and O and including MIIBi4Ti4O15 type crystal (MII is an element composed of Sr and Ln) as a main component, and an oxide of Mn as a subcomponent; and an average particle diameter by the code length measuring method is 0.8 to 4.7 μm: by which it is possible to provide piezoelectric ceramics having a large Qmax in a third harmonic mode of thickness vertical vibration in a relatively high frequency band (for example, 16 to 65 MHz), a resonator an other piezoelectric element comprising the piezoelectric ceramics as a piezoelectric substance thereof.

    摘要翻译： 一种具有陶瓷颗粒的压电陶瓷，其中所述陶瓷颗粒包括至少含有Sr，Ln的铋层化合物（注意Ln是镧系元素），Bi，Ti和O，并且包括M II > 4 15 15 类型晶体（M II）是由Sr和Ln组成的元素作为主要成分， 和Mn的氧化物作为副成分; 并且通过代码长度测量方法的平均粒径为0.8至4.7μm：通过该压电陶瓷可以在相对的厚度垂直振动的三次谐波模式中提供具有大Q最大值的压电陶瓷 高频带（例如，16至65MHz），谐振器和包括作为其压电体的压电陶瓷的其它压电元件。

    PIEZOELECTRIC CERAMIC COMPOSITION AND RESONATOR
    6.
    发明申请
    PIEZOELECTRIC CERAMIC COMPOSITION AND RESONATOR 审中-公开
    压电陶瓷组合物和谐振器

    公开(公告)号：US20080258100A1

    公开(公告)日：2008-10-23

    申请号：US11851415

    申请日：2007-09-07

    申请人： Keisuke Teranishi ,  Masakazu Hirose ,  Tomohisa Azuma

    发明人： Keisuke Teranishi ,  Masakazu Hirose ,  Tomohisa Azuma

    IPC分类号： C04B35/36

    CPC分类号： C04B35/493 ,  C04B2235/3217 ,  C04B2235/3251 ,  C04B2235/3262 ,  H01L41/187 ,  H03H9/02031 ,  H03H9/1035 ,  H03H9/176

    摘要： To obtain a piezoelectric ceramic composition having extremely high heat resisting property. Provided is a piezoelectric ceramic composition comprising a main component represented by Pba[(MnbNbc)dTieZrf]O3 (wherein 0.98≦a≦1.01, 0.340≦b≦0.384, 0.616≦c≦0.660, 0.08≦d≦0.12, 0.500≦e≦0.540, 0.37≦f≦0.41, bd+cd+e+f=1), and 1 to 10% by weight of Al in terms of Al2O3 as an additive. Preferably, b is such that 0.345≦b≦0.375 and c is such that 0.625≦c≦0.655, and the Al as the additive is preferably 2 to 6% by weight in terms of Al2O3.

    摘要翻译： 得到具有极高耐热性的压电陶瓷组合物。 本发明提供一种压电陶瓷组合物，其包含以下组分表示的主要成分：[（N，B）Nb C' （其中0.98 <= a <= 1.01,0.340 <= b <= 0.384,0.616 <= c 根据这个术语，<= 0.660,0.08 <= d <= 0.12,0.500 <= e <= 0.540,0.37 <= f <= 0.41，bd + cd + e + f = 1）和1〜10重量％ 的Al 2 O 3 3作为添加剂。 优选地，b为0.345≤b≤0.375，c为0.625 <= c <= 0.655，作为添加剂的Al优选为2〜6重量％ 3＆gt; 3＆lt; 3＆gt ;.

    Data output circuit with reduced output noise
    8.
    发明申请
    Data output circuit with reduced output noise 失效

    公开(公告)号：US20060028237A1

    公开(公告)日：2006-02-09

    申请号：US11223937

    申请日：2005-09-13

    申请人： Hideto Hidaka ,  Masakazu Hirose

    发明人： Hideto Hidaka ,  Masakazu Hirose

    IPC分类号： H03K19/003

    CPC分类号： H03K19/00361

    摘要： A data output drive transistor is rendered conductive when the potential of an internal node attains an H level, whereby an output node is discharged to the level of ground potential. When the drive transistor is turned on, the output node is discharged to the level of ground potential at high speed. This drive transistor is turned on for a predetermined time period when output of a high level data is completed, whereby the output node is discharged to the level of the ground potential for a predetermined time period. As a result, the potential of the output node is lowered from a high level to an intermediate level, so that the amplitude of a subsequent output signal is reduced. An output circuit that can effectively prevent generation of ringing with no increase in the access time is provided. A countermeasure is provided to suppress a ringing at output node which drives the output node at high speed when the output node potential attains a potential at which no ringing is caused. A stable output signal is provided at high speed.

    Piezoelectric resonator and piezoelectric resonator part
    10.
    发明授权
    Piezoelectric resonator and piezoelectric resonator part 失效
    压电谐振器和压电谐振器部分

    公开(公告)号：US06404102B1

    公开(公告)日：2002-06-11

    申请号：US09631699

    申请日：2000-08-03

    申请人： Toshiyuki Suzuki ,  Nobuyuki Miki ,  Masakazu Hirose ,  Masayoshi Inoue

    发明人： Toshiyuki Suzuki ,  Nobuyuki Miki ,  Masakazu Hirose ,  Masayoshi Inoue

    IPC分类号： H01L4108

    CPC分类号： H03H9/177 ,  H03H9/0207 ,  H03H9/02157 ,  H03H9/0504 ,  H03H9/1014

    摘要： A piezoelectric substrate is constituted by a piezoelectric material of an effective Poisson's ratio being less than 1/3. The substrate has a pair of opposite faces and the opposite faces are provide with a pair of vibrating electrodes in correspondence. The opposite faces of the piezoelectric substrate are rectangular respectively. The sum of the lengths Lc of the one faces in the opposite faces 1a, 1b and the length Wc of the other side of the same is limited within range 2.22 mm≦≦2.24 mm or 2.34 mm≦≦2.48 mm, said one faces being vertical each other. The areas Sc of the opposite faces are 1.22 mm2≦Sc≦1.26 mm2 or 1.35 mm2≦Sc≦1.538 mm2. Accordingly, though using the piezoelectric material of the effective Poisson's ratio being less than 1/3, vibration in the thickness extensional fundamental waves can be steadily utilized.

    摘要翻译： 压电基板由有效泊松比的压电材料构成，小于1/3。 基板具有一对相对的面，相对的面相应地设有一对振动电极。 压电基板的相对面分别为矩形。 相对面1a，1b中的一个面的长度Lc和其另一面的长度Wc的总和被限制在2.22mm <= 2.24mm或2.34mm <= <= 2.48mm的范围内， 说一个人面对垂直。 相对面的面积Sc为1.22 mm2 <= Sc <= 1.26 mm2或1.35 mm2 <= Sc <= 1.538 mm2。 因此，尽管使用有效泊松比的压电材料小于1/3，但可以稳定地利用厚度延伸基波的振动。