INTEGRATED CIRCUIT WITH BURIED POWER RAIL AND METHODS OF MANUFACTURING THE SAME

    公开(公告)号:US20220139835A1

    公开(公告)日:2022-05-05

    申请号:US17574073

    申请日:2022-01-12

    Abstract: A method of manufacturing an integrated circuit having buried power rails includes forming a first dielectric layer on an upper surface of a first semiconductor substrate, forming a series of power rail trenches in an upper surface of the first dielectric layer, forming the buried power rails in the series of power rail trenches, forming a second dielectric layer on the upper surface of the first dielectric layer and upper surfaces of the buried power rails, forming a third dielectric layer on a donor wafer, bonding the third dielectric layer to the second dielectric layer, and forming a series of semiconductor devices, vias, and metal interconnects on or in the donor wafer. The buried power rails are encapsulated by the first dielectric layer and the second dielectric layer, and the buried power rails are below the plurality of semiconductor devices.

    SEMICONDUCTOR DEVICE AND METHOD FOR MAKING THE SAME

    公开(公告)号:US20200135735A1

    公开(公告)日:2020-04-30

    申请号:US16298887

    申请日:2019-03-11

    Abstract: According to some example embodiments of the present disclosure, a semiconductor device includes: a substrate; a first semiconductor layer over the substrate, the first semiconductor layer being a first type of semiconductor device; and a second semiconductor layer over the substrate and the first semiconductor layer, the second semiconductor layer being the first type of semiconductor device, wherein a first portion of the first semiconductor layer overlaps the second semiconductor layer when viewed in a direction perpendicular to a plane of the substrate and a second portion of the first semiconductor layer is laterally offset from the second semiconductor layer when viewed in the direction perpendicular to the plane of the substrate.

    Field effect transistor with decoupled channel and methods of manufacturing the same

    公开(公告)号:US10199474B2

    公开(公告)日:2019-02-05

    申请号:US15485188

    申请日:2017-04-11

    Abstract: A field effect transistor (FET) for an nFET and/or a pFET device including a substrate and a fin including at least one channel region decoupled from the substrate. The FET also includes a source electrode and a drain electrode on opposite sides of the fin, and a gate stack extending along a pair of sidewalls of the channel region of the fin. The gate stack includes a gate dielectric layer and a metal layer on the gate dielectric layer. The FET also includes an oxide separation region separating the channel region of the fin from the substrate. The oxide separation region includes a dielectric material that includes a portion of the gate dielectric layer of the gate stack. The oxide separation region extends completely from a surface of the channel region facing the substrate to a surface of the substrate facing the channel region.

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