Piezoelectric actuator, vibration generating device and electronic equipment

    公开(公告)号:US11469363B2

    公开(公告)日:2022-10-11

    申请号:US16277767

    申请日:2019-02-15

    Abstract: A piezoelectric actuator 10 includes: a piezoelectric element 11; an external electrode 12 covering partially a first surface 11a of the piezoelectric element 11 in a first direction; a wiring member 14; and a conductive joining member 20 joining the wiring member 14 to the external electrode 12, wherein the conductive joining member 20 has an air gap 70 formed between the external electrode 12 and the wiring member 14 in a region overlapping with the wiring member 14 as viewed in the first direction, and wherein the conductive joining member 20 extends to an edge 21 of the external electrode 12 or extends to the first surface 11a of the piezoelectric element 11 beyond the edge 21 of the external electrode 12.

    TRANSDUCER, ANTENNA APPARATUS, WIRELESS APPARATUS, AND METHOD FOR MANUFACTURING TRANSDUCER

    公开(公告)号:US20220321984A1

    公开(公告)日:2022-10-06

    申请号:US17654078

    申请日:2022-03-09

    Inventor: Koh HASHIMOTO

    Abstract: According to one embodiment, a transducer includes: a first conductive member; a substrate forming a first space with the first conductive member; a second conductive member opposed to the first conductive member via the substrate, and forming a second space with the substrate; first conductors electrically connecting the first conductive member with the second conductive member; a first transmission conductor in at least one of the first/the second spaces; and a second transmission conductor in at least one of the first space or the second space, and separated from the first transmission conductor, wherein the second conductive member includes a through hole through the second conductive member in a direction opposed to the first conductive member, and connecting to the second space, and an orthogonal projection of the through hole in the direction includes at least portion of each of the first/the second transmission conductor.

    Discrimination of light interference in a MEMS microphone

    公开(公告)号:US11463830B2

    公开(公告)日:2022-10-04

    申请号:US17174890

    申请日:2021-02-12

    Inventor: Miroslav Svajda

    Abstract: A microelectromechanical system (MEMS) microphone includes a cavity to receive an acoustic signal. The acoustic signal causes movement of a diaphragm relative to one or more other surfaces, which in turn results in an electrical signal representative of the received acoustic signal. A light sensor is included within the packaging of the MEMS microphone such that an output of the light sensor is representative of a light signal received with the acoustic signal. The output of the light sensor is used to modify the electrical signal representative of the received acoustic signal in a manner that limits light interference with an acoustical output signal.

    SIGNAL CONVERTER
    88.
    发明申请

    公开(公告)号:US20220312107A1

    公开(公告)日:2022-09-29

    申请号:US17701129

    申请日:2022-03-22

    Inventor: Masao NORO

    Abstract: A signal converter includes a chamber, a first diaphragm, a second diaphragm, and a first converter. The chamber has a first opening at one end and a second opening at a second end opposite the first end. The first diaphragm is disposed so as to cover the first opening. The second diaphragm is disposed so as to cover the second opening. The first converter is disposed in the chamber and configured to generate a first signal based on a vibration of the first diaphragm.

    Feedback control for calibration of display as sound emitter

    公开(公告)号:US11450305B2

    公开(公告)日:2022-09-20

    申请号:US16796534

    申请日:2020-02-20

    Abstract: Aspects of the disclosure relate to using a display as a sound emitter and may relate to an electronic device including a display. In particular a vibration sensor such as an accelerometer is physically coupled to the display and senses display vibration to provide a high accuracy feedback loop with respect to representing actual audio output from the display. The electronic device includes an actuator physically coupled to the display and configured to cause vibration of the display in response to an audio signal. The electronic device further includes a vibration sensor physically coupled to the display and configured to output a vibration sensor signal proportional to the vibration of the display due to the actuator. The electronic device further includes a processor operably coupled to the vibration sensor. The processor is configured to adjust the audio signal based on the vibration sensor signal from the vibration sensor.

    MICROPHONE
    90.
    发明申请

    公开(公告)号:US20220279261A1

    公开(公告)日:2022-09-01

    申请号:US17571834

    申请日:2022-01-10

    Inventor: Satoshi YOSHINO

    Abstract: A microphone having high waterproofness and water repellency is provided.
    The microphone includes an outer wall member having a sound hole, a first mesh arranged inside the outer wall member and made of Dutch weave, a spacer having a diameter corresponding to an inner diameter of the outer wall member and pressing the first mesh to an inside the outer wall member while a first surface of which is in contact with the first mesh, a second mesh is in contact with a second surface of the spacer and having water repellency, and a microphone unit stored under the second mesh.

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