INTEGRATED THERMOELECTRIC DEVICE TO MITIGATE INTEGRATED CIRCUIT HOT SPOTS

    公开(公告)号:US20230091603A1

    公开(公告)日:2023-03-23

    申请号:US17481501

    申请日:2021-09-22

    Abstract: Techniques are provided for forming one or more thermoelectric devices integrated within a substrate of an integrated circuit. Backside substrate processing may be used to form adjacent portions of the substrate that are doped with alternating dopant types (e.g., n-type dopants alternating with p-type dopants). The substrate can then be etched to form pillars of the various n-type and p-type portions. Adjacent pillars of opposite dopant type can be electrically connected together via a conductive layer. Additionally, the top portions of adjacent pillars are connected together, and the bottom portions of a next pair of adjacent pillars being coupled together, in a repeating pattern to ensure that current flows through the length of each of the doped pillars. The flow of current through alternating n-type and p-type doped material creates a heat flux that transfers heat from one end of the integrated thermoelectric device to the other end.

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