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    ACOUSTIC GENERATOR, ACOUSTIC GENERATION DEVICE, AND ELECTRONIC APPARATUS
    3.
    发明公开
    ACOUSTIC GENERATOR, ACOUSTIC GENERATION DEVICE, AND ELECTRONIC APPARATUS 审中-公开
    KLANGGENERATOR，KLANGERZEUGUNGSVORRICHTUNG ELEKTRONISCHE VORRICHTUNG

    公开(公告)号：EP2739068A1

    公开(公告)日：2014-06-04

    申请号：EP13828515.0

    申请日：2013-06-28

    申请人： Kyocera Corporation

    发明人： HIRAYAMA, Takeshi ,  FUKUOKA, Shuichi ,  KUSHIMA, Noriyuki ,  NINOMIYA, Hiroshi

    IPC分类号： H04R17/00 ,  H01L41/053 ,  H01L41/083 ,  H01L41/09 ,  H04R1/02 ,  H04R1/28 ,  H04R7/04

    CPC分类号： H04R17/005 ,  G10K9/125 ,  G10K11/002 ,  H04R1/00 ,  H04R1/02 ,  H04R17/00

    摘要： The problem is to reduce variations of sound pressure in the sound pressure frequency characteristics. To solve the problem, an acoustic generator includes a film (3) that is a supporting plate; a frame member (5) that is provided on the outer circumference of the film (3); a piezoelectric element (1) that is provided on the film (3) within a frame of the frame member (5); and a resin layer (20) that is provided on the film (3) within the frame of the frame member (5), and the resin layer (20) including an air bubble (8). By the air bubble (8), a decrease in the sound pressure is prevented, peaks and dips in the frequency characteristics of sound pressure are reduced, and high-quality sounds are generated.

    摘要翻译： 问题在于降低声压频率特性中声压的变化。 为了解决这个问题，声发生器包括作为支撑板的膜（3） 设置在所述膜（3）的外周上的框架构件（5）; 压电元件（1），设置在所述框架构件（5）的框架内的所述薄膜（3）上; 以及设置在框架构件（5）的框架内的膜（3）上的树脂层（20）和包括气泡（8）的树脂层（20）。 通过气泡（8），防止声压降低，声压频率特性的峰值和下降降低，产生高质量的声音。

    SOUND GENERATOR, SOUND GENERATION DEVICE, AND ELECTRONIC DEVICE
    4.
    发明公开
    SOUND GENERATOR, SOUND GENERATION DEVICE, AND ELECTRONIC DEVICE 有权
    声音发生器，发声装置和电子装置

    公开(公告)号：EP2887694A1

    公开(公告)日：2015-06-24

    申请号：EP13827751.2

    申请日：2013-04-30

    申请人： Kyocera Corporation

    发明人： ISHIHARA, Atsushi ,  FUKUOKA, Shuichi ,  KUSHIMA, Noriyuki ,  HIRAYAMA, Takeshi ,  TAKAHASHI, Tooru ,  MAKINO, Yutaka ,  NINOMIYA, Hiroshi

    IPC分类号： H04R7/04 ,  H04R1/28 ,  H04R17/00

    CPC分类号： H04R17/00 ,  B06B1/0644 ,  G10K11/002 ,  H04R1/00 ,  H04R7/04 ,  H04R2400/11

    摘要： An object is to achieve excellent sound pressure frequency characteristics. To achieve such an object, an acoustic generator (1) according to one embodiment includes a piezoelectric element (exciter) (5), a vibrating portion (3a), and a plurality of dampers (8). The piezoelectric element (5) receives an input of an electrical signal and is caused to vibrate. The piezoelectric element (5) is mounted on the vibrating portion (3a), and the vibrating portion (3a) is caused to vibrate by the vibration of the piezoelectric element (5). The dampers (8) are integrated with the vibrating portion (3a). The dampers (8) are asymmetrically provided with respect to an axis of symmetry of a shape delineated by the outline of the vibrating portion (3a), in a plan view of the vibrating portion (3a) from a side on which the piezoelectric element (5) is mounted.

    摘要翻译： 目标是实现优异的声压频率特性。 为了实现这样的目的，根据一个实施例的声音发生器（1）包括压电元件（激励器）（5），振动部分（3a）和多个阻尼器（8）。 压电元件（5）接收电信号的输入并引起振动。 压电元件（5）安装在振动部分（3a）上，振动部分（3a）通过压电元件（5）的振动而振动。 阻尼器（8）与振动部分（3a）结合成一体。 阻尼器（8）相对于由振动部分（3a）的轮廓描绘的形状的对称轴线非对称地设置，在振动部分（3a）从压电元件（3a） 5）被安装。

    PIEZOELECTRIC ACTUATOR, LIQUID DISCHARGE HEAD, AND RECORDING DEVICE
    6.
    发明公开
    PIEZOELECTRIC ACTUATOR, LIQUID DISCHARGE HEAD, AND RECORDING DEVICE 审中-公开

    公开(公告)号：EP4063125A1

    公开(公告)日：2022-09-28

    申请号：EP20905878.3

    申请日：2020-12-25

    申请人： Kyocera Corporation

    发明人： TABATA, Shuhei ,  HIGASHIBEPPU, Makoto ,  HIRAYAMA, Takeshi ,  SHIMURA, Gen ,  HASEGAWA, Yukihiro

    IPC分类号： B41J2/14

    摘要： A piezoelectric actuator includes a piezoelectric layer and a conductor layer that is provided directly or indirectly on the piezoelectric layer. In plan view, the conductor layer includes a plurality of individual electrodes that are arranged with intervals therebetween and a plurality of wiring lines that extend from the plurality of individual electrodes. Each wiring line includes a wide portion and a first narrow portion. The wide portion includes a part positioned at a center of the wiring line in a length direction. The first narrow portion is disposed between the wide portion and one of the plurality of individual electrodes to which the wiring line is connected. The first narrow portion has a width less than a width of the wide portion.

    PIEZOELECTRIC CERAMIC COMPOSITION AND PIEZOELECTRIC ACTUATOR
    7.
    发明公开
    PIEZOELECTRIC CERAMIC COMPOSITION AND PIEZOELECTRIC ACTUATOR 审中-公开

    公开(公告)号：EP3923355A1

    公开(公告)日：2021-12-15

    申请号：EP20770364.6

    申请日：2020-03-02

    申请人： Kyocera Corporation

    发明人： TABATA, Shuhei ,  HIRAYAMA, Takeshi ,  SHIMURA, Gen

    IPC分类号： H01L41/09 ,  H01L41/187 ,  B41J2/14 ,  C04B35/495

    摘要： In a piezoelectric ceramic composition including potassium sodium niobate, a transition temperature at which a phase transition between an orthorhombic crystal structure and a tetragonal crystal structure occurs lies in a temperature range of -20°C or higher and 60°C or lower. In the piezoelectric ceramic composition, αt/αo is 0.72 or more, where αo represents a coefficient of linear expansion determined when a crystal structure is orthorhombic in the temperature range, and αt represents a coefficient of linear expansion determined when a crystal structure is tetragonal in the temperature range.

    LIQUID DISCHARGE HEAD AND RECORDING DEVICE
    8.
    发明公开
    LIQUID DISCHARGE HEAD AND RECORDING DEVICE 审中-公开

    公开(公告)号：EP4112313A1

    公开(公告)日：2023-01-04

    申请号：EP21781988.7

    申请日：2021-03-26

    申请人： Kyocera Corporation

    发明人： TABATA, Shuhei ,  HIGASHIBEPPU, Makoto ,  HIRAYAMA, Takeshi ,  SHIMURA, Gen ,  HASEGAWA, Yukihiro

    IPC分类号： B41J2/14

    摘要： A piezoelectric actuator includes a first active region and a second active region. The first active region is made of a piezoelectric member polarized in a thickness direction and overlaps a midsection of a pressure chamber when viewed in plan through a pressure applying surface. The second active region is made of a piezoelectric member polarized in the thickness direction and closer than the first active region to the pressure applying surface. The second active region extends over both a peripheral section of the pressure chamber and an outer region located outside the pressure chamber when viewed in plan through the pressure applying surface. When performing liquid ejection control, a driver controls intensity of a first electric field applied to the first active region and intensity of a second electric field applied to the second active region such that the time period over which the first active region expands and the time period over which the second active region expands overlap or coincide with each other and the time period over which the first active region contracts and the time period over which the second active region contracts overlap or coincide with each other. The first electric field is more intense than the second electric field.

    PIEZOELECTRIC ACTUATOR, LIQUID DISCHARGE HEAD, AND RECORDING DEVICE
    9.
    发明公开
    PIEZOELECTRIC ACTUATOR, LIQUID DISCHARGE HEAD, AND RECORDING DEVICE 审中-公开

    公开(公告)号：EP4063124A1

    公开(公告)日：2022-09-28

    申请号：EP20905876.7

    申请日：2020-12-25

    申请人： Kyocera Corporation

    发明人： TABATA, Shuhei ,  HIGASHIBEPPU, Makoto ,  HIRAYAMA, Takeshi ,  HASEGAWA, Yukihiro ,  SHIMURA, Gen ,  MIYAHARA, Takashi ,  ISHIHARA, Atsushi

    IPC分类号： B41J2/14

    摘要： A piezoelectric actuator includes a common electrode that is provided on a piezoelectric layer at a side adjacent to a first surface and extends over a plurality of piezoelectric elements. A plurality of first individual electrodes are provided on the piezoelectric layer at a side adjacent to a second surface. The plurality of first individual electrodes are positioned individually at the plurality of piezoelectric elements, and are not electrically connected to each other. A first insulating layer is provided on the common electrode at a side adjacent to the first surface and extends over the plurality of piezoelectric elements. A plurality of second individual electrodes are provided on the first insulating layer at a side adjacent to the first surface. The plurality of second individual electrodes are positioned individually at the plurality of piezoelectric elements, and overlap centers of the plurality of first individual electrodes in see-through plan view. The plurality of second individual electrodes are electrically connected to each other.