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    ASYMMETRICAL ULTRASOUND TRANSDUCER ARRAY
    11.
    发明公开
    ASYMMETRICAL ULTRASOUND TRANSDUCER ARRAY 审中-公开

    公开(公告)号：US20240310209A1

    公开(公告)日：2024-09-19

    申请号：US18679296

    申请日：2024-05-30

    Applicant: Exo Imaging, Inc.

    Inventor： Sandeep AKKARAJU ,  Haesung KWON ,  Brian BIRCUMSHAW

    IPC: G01H11/08 ,  B81B3/00 ,  G01N29/07 ,  G01S15/02 ,  H10N30/30 ,  H10N30/85

    CPC classification number: G01H11/08 ,  G01N29/07 ,  G01S15/02 ,  H10N30/302 ,  H10N30/852 ,  B81B3/0021

    Abstract: An array of micromachined ultrasonic transducers (MUTs). The array has first and second rows, the MUTs in the first row being equally spaced by a horizontal pitch in a horizontal direction, the MUTs in the second row being equally spaced by the horizontal pitch in the horizontal direction. The MUTs in the second row are shifted along the horizontal direction by a first horizontal distance relative to the MUTs in the first row and shifted along a vertical direction by a first vertical distance relative to the MUTs in the first row. The first horizontal distance is greater than zero and less than the horizontal pitch. The first vertical distance ranges from one tenth of a horizontal width of a MUT to a half of a vertical height of a MUT.

    IMAGING DEVICES HAVING PIEZOELECTRIC TRANSCEIVERS
    13.
    发明申请
    IMAGING DEVICES HAVING PIEZOELECTRIC TRANSCEIVERS 有权

    公开(公告)号：US20220205836A1

    公开(公告)日：2022-06-30

    申请号：US17697837

    申请日：2022-03-17

    Applicant: Exo Imaging, Inc.

    Inventor： Sandeep AKKARAJU ,  Haesung KWON ,  Brian BIRCUMSHAW

    IPC: G01H11/08 ,  G01S15/02 ,  G01N29/07 ,  H01G5/00 ,  H01L41/113 ,  H01L41/18

    Abstract: A micromachined ultrasonic transducer (MUT). The MUT includes: a substrate; a membrane suspending from the substrate; a bottom electrode disposed on the membrane; a piezoelectric layer disposed on the bottom electrode and an asymmetric top electrode is disposed on the piezoelectric layer. The areal density distribution of the asymmetric electrode along an axis has a plurality of local maxima, wherein locations of the plurality of local maxima coincide with locations where a plurality of anti-nodal points at a vibrational resonance frequency is located.

    ULTRASONIC TRANSDUCERS WITH Q SPOILING
    16.
    发明申请
    ULTRASONIC TRANSDUCERS WITH Q SPOILING 有权

    公开(公告)号：US20210069748A1

    公开(公告)日：2021-03-11

    申请号：US17099545

    申请日：2020-11-16

    Applicant: eXo Imaging, Inc.

    Inventor： Brian BIRCUMSHAW ,  Sandeep AKKARAJU ,  Haesung KWON

    IPC: B06B1/02 ,  G10K9/122 ,  B06B1/06

    Abstract: Disclosed herein are ultrasonic transducer systems comprising: an ultrasonic transducer comprising a substrate, a diaphragm, and a piezoelectric element; a first electrical circuitry coupled to the ultrasonic transducer, the first electrical circuitry configured for driving the ultrasonic transducer or detecting motion of the diaphragm; a plurality of electrical ports coupled to the ultrasonic transducer; and a second electrical circuitry connected to two or more of the plurality of electrical ports, the electrical circuitry comprising one or more of: a resistor, a capacitor, a switch, and an amplifier, wherein the second electrical circuitry is independent from the first electrical circuitry, and wherein the second electrical circuitry is configured to dampen the motion of the diaphragm.

    IMAGING DEVICES HAVING PIEZOELECTRIC TRANSCEIVERS WITH HARMONIC CHARACTERISTICS
    18.
    发明公开
    IMAGING DEVICES HAVING PIEZOELECTRIC TRANSCEIVERS WITH HARMONIC CHARACTERISTICS 审中-公开

    公开(公告)号：US20240082876A1

    公开(公告)日：2024-03-14

    申请号：US18514989

    申请日：2023-11-20

    Applicant: Exo Imaging, Inc.

    Inventor： Haesung KWON ,  Brian BIRCUMSHAW ,  Sandeep AKKARAJU

    IPC: B06B1/06

    CPC classification number: B06B1/0603 ,  A61B8/4483

    Abstract: A micromachined ultrasonic transducer (MUT) which comprises a first piezoelectric layer and a second piezoelectric layer. The first piezoelectric layer is disposed between a first electrode and a second electrode. The second piezoelectric layer is disposed between the second electrode and a third electrode. At least the first electrode has first and second ends along a first axis, one or more of which is defined by a radius of curvature R. A second axis normal to the first passes through a midpoint of the first axis. A half-width of the first electrode is defined by a length L measured from the midpoint, in the direction of the second axis, to an outer perimeter of the first electrode. A total width of the first electrode at its narrowest point along the first axis is at most 2L such that the first electrode has a concave shape. R/L is greater than 1.

    ASYMMETRICAL ULTRASOUND TRANSDUCER ARRAY
    20.
    发明申请
    ASYMMETRICAL ULTRASOUND TRANSDUCER ARRAY 有权

    公开(公告)号：US20210364348A1

    公开(公告)日：2021-11-25

    申请号：US17395171

    申请日：2021-08-05

    Applicant: Exo Imaging, Inc.

    Inventor： Sandeep AKKARAJU ,  Haesung KWON ,  Brian BIRCUMSHAW

    IPC: G01H11/08 ,  H01L41/18 ,  G01N29/07 ,  G01S15/02 ,  H01L41/113

    Abstract: An array of micromachined ultrasonic transducers (MUTs). The array has first and second rows, the MUTs in the first row being equally spaced by a horizontal pitch in a horizontal direction, the MUTs in the second row being equally spaced by the horizontal pitch in the horizontal direction. The MUTs in the second row are shifted along the horizontal direction by a first horizontal distance relative to the MUTs in the first row and shifted along a vertical direction by a first vertical distance relative to the MUTs in the first row. The first horizontal distance is greater than zero and less than the horizontal pitch. The first vertical distance ranges from one tenth of a horizontal width of a MUT to a half of a vertical height of a MUT.

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