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    Vibration device for generating acoustic performance
    2.
    发明授权
    Vibration device for generating acoustic performance 有权

    公开(公告)号：US11849296B2

    公开(公告)日：2023-12-19

    申请号：US17304669

    申请日：2021-06-24

    Applicant: AGC Inc.

    Inventor： Jun Akiyama ,  Kento Sakurai

    IPC: H04R7/04 ,  B06B1/04 ,  B06B1/02

    CPC classification number: H04R7/045 ,  B06B1/0207 ,  B06B1/045 ,  H04R2440/05

    Abstract: A vibration device includes a plate-like glass vibrator and a plurality of exciters that are attached to the glass vibrator and configured to generate vibration according to an input electrical signal. An aspect ratio La/Lb of a length La of a longer side to a length Lb of a shorter side of a rectangle in which the glass vibrator is inscribed is 1.2 to 50. Provided that the number of the exciters is n and a minimum value of distance between the exciters is Smin, a relational value α (α=Smin−1)/La) is 0.2 to 0.8. In the case where the number n of exciters is 3 or larger, a value β(β=Sσ/Save) obtained by dividing a standard deviation Sσ of distances by an average Save of the distances between the exciters is 0 to 0.5.

    PANEL-TYPE SPEAKER
    4.
    发明公开
    PANEL-TYPE SPEAKER 审中-公开

    公开(公告)号：US20230336917A1

    公开(公告)日：2023-10-19

    申请号：US18339643

    申请日：2023-06-22

    Applicant: DENSO TEN Limited

    Inventor： Shizuka ISHIGAKI ,  Hironori SHIROTO ,  Yutaka MATSUNAMI

    IPC: H04R3/00 ,  H04R7/04 ,  H04R17/10 ,  H04R1/22

    CPC classification number: H04R7/045 ,  H04R1/22 ,  H04R3/007 ,  H04R17/10 ,  H04R2440/05

    Abstract: A panel-type speaker includes a panel and an actuator and is configured to vibrate the panel by the actuator so as to output sound waves from the panel, the actuator includes: a vibrating plate; and a piezoelectric element arranged on at least one surface of the vibrating plate, the piezoelectric element has, at a central portion of the piezoelectric element in a plan view, an opening from which the vibrating plate is exposed, and at a portion of the vibrating plate exposed from the opening, the vibrating plate is coupled to the panel.

    ACTIVE DISTRIBUTED MODE ACTUATOR
    7.
    发明申请
    ACTIVE DISTRIBUTED MODE ACTUATOR 审中-公开

    公开(公告)号：US20190190478A1

    公开(公告)日：2019-06-20

    申请号：US15848292

    申请日：2017-12-20

    Applicant: NVF Tech Ltd.

    Inventor： Graham Landick ,  Neil John Harris

    IPC: H03G5/16 ,  H04R17/00 ,  H04R3/04

    CPC classification number: H03G5/16 ,  H04R3/04 ,  H04R7/045 ,  H04R17/00 ,  H04R17/10 ,  H04R2440/05 ,  H04R2499/11

    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for changing a distributed mode loudspeaker's fundamental frequency. One of the systems includes a distributed mode loudspeaker comprising an actuator that includes: a supported portion, and a cantilevered portion having a length, a first fundamental frequency, and adapted to create a force to cause vibration of a load to generate sound waves using the first fundamental frequency; a support element connected to the supported portion of the actuator and adapted to adjust, based on a change to a shape of the support element, a size of the length of the cantilevered portion to change the first fundamental frequency to a second fundamental frequency with which the load will generate sound waves; and a frequency selection module that provides a signal to the support element to cause the support element to change shape.

    DISPLAY APPARATUS
    8.
    发明申请
    DISPLAY APPARATUS 审中-公开

    公开(公告)号：US20180348816A1

    公开(公告)日：2018-12-06

    申请号：US15983498

    申请日：2018-05-18

    Applicant: LG Display Co., Ltd.

    Inventor： Sungtae LEE ,  KwanHo PARK ,  YeongRak CHOI

    IPC: G06F1/16 ,  H05K5/00 ,  H04R5/02

    CPC classification number: G06F1/1605 ,  H04R5/02 ,  H04R7/045 ,  H04R2440/05 ,  H04R2499/15 ,  H05K5/0017

    Abstract: A display apparatus includes: a display module including a display panel configured to display an electronic image, a supporting cover configured to cover a rear surface of the display module, a cover supporting member connected to a rear edge of the display panel and configured to support the supporting cover, and a sound-generating device supported by the supporting cover and configured to: output sound to a front direction of the display panel by directly vibrating the display panel, and directly contact and directly vibrate first and second rear edge portions of the display panel, the first and second rear edge portions being parallel to each other.

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