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    ASYMMETRICAL ULTRASOUND TRANSDUCER ARRAY
    2.
    发明申请
    ASYMMETRICAL ULTRASOUND TRANSDUCER ARRAY 审中-公开

    公开(公告)号：US20200249079A1

    公开(公告)日：2020-08-06

    申请号：US16837800

    申请日：2020-04-01

    Applicant: eXo Imaging, Inc.

    Inventor： Sandeep AKKARAJU ,  Haesung KWON ,  Brian BIRCUMSHAW

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

    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
    5.
    发明申请
    IMAGING DEVICES HAVING PIEZOELECTRIC TRANSCEIVERS 审中-公开

    公开(公告)号：US20200225082A1

    公开(公告)日：2020-07-16

    申请号：US16833333

    申请日：2020-03-27

    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.

    IMAGING DEVICES HAVING PIEZOELECTRIC TRANSCEIVERS WITH HARMONIC CHARACTERISTICS
    7.
    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
    9.
    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.

    ASYMMETRICAL ULTRASOUND TRANSDUCER ARRAY
    10.
    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.

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