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    VIBRATION DEVICE
    4.
    发明申请
    VIBRATION DEVICE 有权

    公开(公告)号：US20220209096A1

    公开(公告)日：2022-06-30

    申请号：US17531976

    申请日：2021-11-22

    Applicant: TDK CORPORATION

    Inventor： Keisuke TERANISHI ,  Hiroki MITSUI ,  Miho KATO ,  Hideya SAKAMOTO ,  Narumi SATO

    IPC: H01L41/047 ,  H01L41/053 ,  H01L41/09

    Abstract: The vibration device includes a piezoelectric element having a connection terminal exposed from a main surface of the piezoelectric element, a first resin layer having conductivity and covering the connection terminal of the piezoelectric element to be electrically connected to the connection terminal, a wiring member overlapping the main surface of the piezoelectric element to cover the first resin layer, including a wire electrically connected to the first resin layer, and extending beyond one end of the piezoelectric element when viewed in a thickness direction of the piezoelectric element, and a second resin layer integrally covering the main surface of the piezoelectric element and the wiring member. The second resin layer includes a first layer in direct contact with the piezoelectric element and the wiring member, and a second layer covering the piezoelectric element and the wiring member via the first layer.

    PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC DEVICE
    5.
    发明申请
    PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC DEVICE 审中-公开

    公开(公告)号：US20180261758A1

    公开(公告)日：2018-09-13

    申请号：US15914093

    申请日：2018-03-07

    Applicant: TDK CORPORATION

    Inventor： Masashi KITAZAKI ,  Keisuke TERANISHI ,  Makoto ISHIZAKI

    IPC: H01L41/187 ,  H01L41/43 ,  C04B35/475 ,  C04B35/626 ,  C04B35/628 ,  C04B35/64

    Abstract: A piezoelectric composition comprises a plurality of crystal particles, wherein the piezoelectric composition includes bismuth, iron, barium, titanium, and oxygen; the crystal particles include a core and a shell covering the core; the average value of the contents of bismuth in the cores is expressed as CCORE % by mass, the average value of the contents of bismuth in the shells is expressed as CSHELL % by mass, and the CCORE is lower than the CSHELL; and the number of all the particles comprised in the piezoelectric composition is expressed as N, the number of the crystal particles including the core and the shell is expressed as n, and n/N is 0.10 to 1.00.

    PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC ELEMENT
    6.
    发明申请
    PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC ELEMENT 有权
    压电组合物和压电元件

    公开(公告)号：US20150129792A1

    公开(公告)日：2015-05-14

    申请号：US14535880

    申请日：2014-11-07

    Applicant: TDK Corporation

    Inventor： Taku MASAI ,  Keisuke TERANISHI ,  Masahito FURUKAWA

    IPC: H01L41/187

    CPC classification number: H01L41/1878 ,  H01L41/0805 ,  H01L41/083 ,  H01L41/273 ,  H01L41/316

    Abstract: The present invention aims to provide an excellent piezoelectric composition and an excellent piezoelectric element if the piezoelectric properties especially a high spontaneous polarization and a sufficiently high resistivity, the low pollution, the environment and the ecology are considered. In the piezoelectric composition, the main component contains the substance represented by the following formula with a perovskite-typed structure, (Bi(0.5x+y+z)Na0.5x)m(Tix+0.5yMg0.5yAlz)O3. Wherein, 0.01≦x≦0.8, 0.2≦y≦0.8, 0.01≦z≦0.6, 0.75≦m≦1.0, and x+y+z=1

    Abstract translation: 本发明的目的在于提供一种优异的压电组合物和优异的压电元件，如果考虑压电性能，特别是高自发极化和足够高的电阻率，低污染，环境和生态学。 在压电组合物中，主要成分含有下列式表示的具有钙钛矿型结构的物质（Bi（0.5x + y + z）Na 0.5 x）m（Tix + 0.5yMg0.5yAlz）O 3。 其中，0.01＆nlE; x＆lt; l; 0.8,0.2＆nlE; y＆nlE; 0.8,0.01＆nlE; z＆nlE; 0.6,0.75＆amp; nlE; m＆nlE; 1.0和x + y + z = 1

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