TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATOR PACKAGE

    公开(公告)号:US20220029608A1

    公开(公告)日:2022-01-27

    申请号:US17497889

    申请日:2021-10-09

    申请人: Resonant Inc.

    摘要: Acoustic resonator devices and filters are disclosed. An acoustic resonator chip includes a piezoelectric plate attached to a substrate. Portions of the piezoelectric plate form at least first and second diaphragms spanning respective cavities in the substrate. A first conductor pattern on the surface of the piezoelectric plate includes a first plurality of contact pads and at least first and second IDTs with interleaved fingers of each IDT on respective diaphragms. An interposer includes a second plurality of contacts pads. A plurality of conductive balls bond each of the contact pads of the first plurality of contact pads to respective contact pads of the second plurality of contact pads.

    TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATOR PACKAGE

    公开(公告)号:US20210044276A1

    公开(公告)日:2021-02-11

    申请号:US17082973

    申请日:2020-10-28

    申请人: Resonant Inc.

    摘要: Acoustic resonator devices and filters are disclosed. A piezoelectric plate is attached to a substrate, a portion of the piezoelectric plate forming a diaphragm spanning a chip cavity in the substrate. A first conductor pattern is formed on a surface of the piezoelectric plate. The first conductor pattern includes interleaved fingers of an interdigital transducer on the diaphragm, and first contact pads. An interposer has walls on its back surface that are attached to the chip front surface and that surround the diaphragm. An interposer cover layer spans the walls creating an enclosed interposer cavity over the diaphragm. A second conductor pattern formed on the walls and cover layer includes second contact pads on the interposer back surface. Electrical connections between the second contact pads and connection points on the chip electrically connect the first contact pads to respective ones of the second contact pads.

    Transversely-excited film bulk acoustic resonator package and method

    公开(公告)号:US10819309B1

    公开(公告)日:2020-10-27

    申请号:US16841134

    申请日:2020-04-06

    申请人: Resonant Inc.

    摘要: Acoustic resonator devices and filters are disclosed. A piezoelectric plate is attached to a substrate, a portion of the piezoelectric plate forming a diaphragm spanning a cavity in the substrate. A first conductor pattern is formed on a surface of the piezoelectric plate. The first conductor pattern includes interleaved fingers of an interdigital transducer disposed on the diaphragm, and a first plurality of contact pads. A second conductor pattern is formed on a surface of a base, the second conductor pattern including a second plurality of contact pads. Each pad of the first plurality of contact pads is directly bonded to a respective pad of the second plurality of contact pads. A ring-shaped seal is form between a perimeter of the piezoelectric plate and a perimeter of the base.

    METHOD OF FABRICATING TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATOR

    公开(公告)号:US20220029606A1

    公开(公告)日:2022-01-27

    申请号:US17497887

    申请日:2021-10-09

    申请人: Resonant Inc.

    摘要: Acoustic resonator devices and filters are disclosed. An acoustic resonator chip includes a piezoelectric plate attached to a substrate, a portion of the piezoelectric plate forming a diaphragm spanning a cavity in the substrate. A first conductor pattern formed on a surface of the piezoelectric plate includes an interdigital transducer with interleaved fingers on the diaphragm, and a first plurality of contact pads. A second conductor pattern is formed on a surface of an interposer, the second conductor pattern including a second plurality of contact pads. Each pad of the first plurality of contact pads is directly bonded to a respective pad of the second plurality of contact pads. A seal is formed between a perimeter of the acoustic resonator chip and a perimeter of the interposer.

    TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATOR PACKAGE AND METHOD

    公开(公告)号:US20200321939A1

    公开(公告)日:2020-10-08

    申请号:US16841134

    申请日:2020-04-06

    申请人: Resonant Inc.

    摘要: Acoustic resonator devices and filters are disclosed. A piezoelectric plate is attached to a substrate, a portion of the piezoelectric plate forming a diaphragm spanning a cavity in the substrate. A first conductor pattern is formed on a surface of the piezoelectric plate. The first conductor pattern includes interleaved fingers of an interdigital transducer disposed on the diaphragm, and a first plurality of contact pads. A second conductor pattern is formed on a surface of a base, the second conductor pattern including a second plurality of contact pads. Each pad of the first plurality of contact pads is directly bonded to a respective pad of the second plurality of contact pads. A ring-shaped seal is form between a perimeter of the piezoelectric plate and a perimeter of the base.

    TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATOR PACKAGE AND METHOD

    公开(公告)号:US20220029609A1

    公开(公告)日:2022-01-27

    申请号:US17497961

    申请日:2021-10-10

    申请人: Resonant Inc.

    摘要: Methods of making acoustic resonator devices and filters are disclosed. A method of fabricating an acoustic resonator device includes fabricating an acoustic resonator chip including: attaching a back surface of a piezoelectric plate to a front surface of a substrate, such that portions of the piezoelectric plate form at least first and second diaphragms spanning at least first and second cavities, and forming a first conductor pattern as one or more conductor layers on the piezoelectric plate. The first conductor pattern includes at least first and second interdigitated transducers (IDTs) and a first plurality of contact pads. The method further includes fabricating an interposer having front and back surface and a second plurality of contact pads on the interposer back surface, forming conductive balls, and bonding each of the first plurality of contact pads to a respective pad of the second plurality of contact pads using the respective conductive ball.

    TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATOR PACKAGE AND METHOD

    公开(公告)号:US20220029607A1

    公开(公告)日:2022-01-27

    申请号:US17497888

    申请日:2021-10-09

    申请人: Resonant Inc.

    摘要: Acoustic resonator devices and filters are disclosed. An acoustic resonator chip includes a piezoelectric plate attached to a substrate, a portion of the piezoelectric plate forming a diaphragm spanning a cavity in the substrate. A first conductor pattern formed on a surface of the piezoelectric plate includes interleaved fingers of an interdigital transducer on the diaphragm and a first plurality of contact pads. A second conductor pattern is formed on a surface of an interposer, the second conductor pattern including a second plurality of contact pads. Each pad of the first plurality of contact pads is directly connected to a respective pad of the second plurality of contact pads. A seal is formed between a perimeter of the piezoelectric plate and a perimeter of the interposer.

    TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATOR PACKAGE

    公开(公告)号:US20210044275A1

    公开(公告)日:2021-02-11

    申请号:US17082945

    申请日:2020-10-28

    申请人: Resonant Inc.

    摘要: Acoustic resonator devices and filters are disclosed. A piezoelectric plate is attached to a substrate, a portion of the piezoelectric plate forming a diaphragm spanning a cavity in the substrate. A first conductor pattern is formed on a surface of the piezoelectric plate. The first conductor pattern includes interleaved fingers of an interdigital transducer disposed on the diaphragm, and a first plurality of contact pads. A second conductor pattern is formed on a back surface of an interposer, the second conductor pattern including a second plurality of contact pads. The interposer has layers of a LTCC circuit card, at least one layer of the tape comprising printed conductors. A plurality of conductive balls directly bonds the first plurality of contact pads formed on the plate to respective contact pads of the second plurality of contact pads formed on the interposer.