PAD OVER ACTIVE SENSOR CELLS INTEGRATED IN A CHIP PACKAGE

    公开(公告)号:US20250160219A1

    公开(公告)日:2025-05-15

    申请号:US18505701

    申请日:2023-11-09

    Abstract: A chip-scale package includes a magnetic sensor integrated circuit (IC) and a conductive contact pad. The magnetic sensor IC includes an IC layer stack comprising a plurality of isolation layers and a plurality of conductive layers; and a magnetoresistive sensing element integrated in the IC layer stack. The magnetoresistive sensing element includes a reference layer having a fixed reference magnetization aligned with a magnetization axis, and a magnetic free layer having a magnetically free magnetization. The magnetically free magnetization is variable in a presence of an external magnetic field. The conductive contact pad is arranged on or integrated in the IC layer stack. Moreover, the conductive contact pad is arranged over the magnetoresistive sensing element such that the conductive contact pad and the magnetoresistive sensing element at least partially vertically overlap.

    CIRCUIT ARRANGEMENT WITH A THERMAL INTERFACE

    公开(公告)号:US20220199481A1

    公开(公告)日:2022-06-23

    申请号:US17542905

    申请日:2021-12-06

    Abstract: A circuit arrangement has a chip arrangement in the form of an embedded Wafer Level Ball Grid Array (eWLB) arrangement with solder contacts on one side and a thermal interface on a side of the chip arrangement facing away from the solder contacts which is designed to dissipate heat from the semiconductor chip. In examples, the thermal interface has a thermally and electrically conductive material, wherein in a top view of the chip arrangement, a contact area in which the thermally and electrically conductive material is in thermal contact with the chip arrangement is limited to the fan-out area. In examples, the thermal interface has at least one RF absorption layer which is designed to absorb electromagnetic radiation at an operating frequency of the semiconductor chip.

Patent Agency Ranking