ULTRASONIC SENSOR
    4.
    发明公开
    ULTRASONIC SENSOR 审中-公开

    公开(公告)号:US20240038208A1

    公开(公告)日:2024-02-01

    申请号:US18485230

    申请日:2023-10-11

    申请人: DENSO CORPORATION

    摘要: An ultrasonic sensor includes a magnetic substance, a diaphragm, and an electromagnetic transducer. The electromagnetic transducer is disposed opposing the magnetic substance across an outer plate of a vehicle. The diaphragm has the shape of a thin film with a film thickness direction along an axial direction parallel to a directional axis. The diaphragm is able to ultrasonically oscillate by being joined to an outer surface of the outer plate at an outer edge in a radial direction crossing the directional axis. With the outer edge of the diaphragm joined to the outer surface of the outer plate, an internal space that expands and contracts along the axial direction in response to ultrasonic oscillation of the diaphragm is formed between the diaphragm and the outer surface of the outer plate.

    Speaker device
    8.
    发明授权

    公开(公告)号:US11700482B2

    公开(公告)日:2023-07-11

    申请号:US17583132

    申请日:2022-01-24

    申请人: YANDEX EUROPE AG

    摘要: A speaker device for reproducing sound within a predetermined audio spectrum is provided. The speaker device comprises: a housing including a top, a bottom, and a side surface; at least one speaker disposed within the housing, the at least one speaker including a speaker flange facing towards the bottom; a waveguide including at least a first surface defining at least one sound channel for conducting a given sound produced by the at least one speaker, and the at least one channel includes a first zone, a second zone, and a third zone sequentially defined along a length thereof to provide for sound reproduction from 100 Hz to 20000 Hz.

    Display device
    10.
    发明授权

    公开(公告)号:US11599327B2

    公开(公告)日:2023-03-07

    申请号:US16852518

    申请日:2020-04-19

    摘要: A display device including a display panel including a first substrate and a pixel array layer disposed on a first surface of the first substrate, a first sound generation device disposed on a second surface of the first substrate opposing the first surface, and configured to vibrate the display panel and output first sound, and a circuit board disposed on the second surface of the first substrate, in which the first sound generation device includes a bobbin fixed on one surface of the first substrate, a voice coil surrounding a side surface of the bobbin, a magnet disposed on the bobbin and spaced apart from the bobbin, and a plate disposed on the magnet and fixed to the circuit board.