IC PACKAGE INCLUDING MULTI-CHIP UNIT WITH BONDED INTEGRATED HEAT SPREADER

    公开(公告)号:US20210242104A1

    公开(公告)日:2021-08-05

    申请号:US17234671

    申请日:2021-04-19

    Abstract: A multi-chip unit suitable for chip-level packaging may include multiple IC chips that are interconnected through a metal redistribution structure, and that are directly bonded to an integrated heat spreader. Bonding of the integrated heat spreader to the multiple IC chips may be direct so that no thermal interface material (TIM) is needed, resulting in a reduced bond line thickness (BLT) and lower thermal resistance. The integrated heat spreader may further serve as a structural member of the multi-chip unit, allowing a second side of the redistribution structure to be further interconnected to a host by solder interconnects. The redistribution structure may be fabricated on a sacrificial interposer that may facilitate planarizing IC chips of differing thickness prior to bonding the heat spreader. The sacrificial interposer may be removed to expose the RDL for further interconnection to a substrate without the use of through-substrate vias.

    IC package including multi-chip unit with bonded integrated heat spreader

    公开(公告)号:US11011448B2

    公开(公告)日:2021-05-18

    申请号:US16529617

    申请日:2019-08-01

    Abstract: A multi-chip unit suitable for chip-level packaging may include multiple IC chips that are interconnected through a metal redistribution structure, and that are directly bonded to an integrated heat spreader. Bonding of the integrated heat spreader to the multiple IC chips may be direct so that no thermal interface material (TIM) is needed, resulting in a reduced bond line thickness (BLT) and lower thermal resistance. The integrated heat spreader may further serve as a structural member of the multi-chip unit, allowing a second side of the redistribution structure to be further interconnected to a host by solder interconnects. The redistribution structure may be fabricated on a sacrificial interposer that may facilitate planarizing IC chips of differing thickness prior to bonding the heat spreader. The sacrificial interposer may be removed to expose the RDL for further interconnection to a substrate without the use of through-substrate vias.

    Edge-firing antenna walls built into substrate

    公开(公告)号:US10658765B2

    公开(公告)日:2020-05-19

    申请号:US16021474

    申请日:2018-06-28

    Abstract: A method of forming a planar antenna on a first substrate. An antenna feedline is formed on a peelable copper film of a carrier. A dielectric with no internal conductive layer is formed on the feedline. A planar antenna is formed on one of two parallel sides of the dielectric and a feed port is formed adjacent the other parallel side. The feedline connects the antenna with the feed port. One plane of the planar antenna is configured for perpendicular attachment to a second substrate. The feedline is connected to the planar antenna by a via through the dielectric. The peelable copper is removed and the structure is etched to produce the planar antenna on the substrate. Two planar antennas on substrates can be perpendicularly attached to another substrate to form side-firing antennas.

    Low cost package warpage solution
    107.
    发明授权

    公开(公告)号:US10403512B2

    公开(公告)日:2019-09-03

    申请号:US15899222

    申请日:2018-02-19

    Abstract: Embodiments of the invention include device packages and methods of forming such packages. In an embodiment, the method of forming a device package may comprise forming a reinforcement layer over a substrate. One or more openings may be formed through the reinforcement layer. In an embodiment, a device die may be placed into one of the openings. The device die may be bonded to the substrate by reflowing one or more solder bumps positioned between the device die and the substrate. Embodiments of the invention may include a molded reinforcement layer. Alternative embodiments include a reinforcement layer that is adhered to the surface of the substrate with an adhesive layer.

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