INTEGRATED CIRCUIT STRUCTURES HAVING BACKSIDE GATE TIE-DOWN

    公开(公告)号:US20230317787A1

    公开(公告)日:2023-10-05

    申请号:US17709374

    申请日:2022-03-30

    CPC classification number: H01L29/0673 H01L27/0886

    Abstract: Integrated circuit structures having backside gate tie-down are described. In an example, a structure includes a first vertical stack of horizontal nanowires over a first sub-fin, and a second vertical stack of horizontal nanowires over a second sub-fin, the second vertical stack of horizontal nanowires spaced apart from and parallel with the first vertical stack of horizontal nanowires. A gate structure includes a first gate structure portion over the first vertical stack of horizontal nanowires, wherein the first gate structure extends along an entirety of the first sub-fin. A second gate structure portion is over the second vertical stack of horizontal nanowires, wherein the second gate structure does not extend along an entirety of the second sub-fin. A gate cut is between the first gate structure portion and the second gate structure portion.

    FIN SMOOTHING AND INTEGRATED CIRCUIT STRUCTURES RESULTING THEREFROM

    公开(公告)号:US20230275157A1

    公开(公告)日:2023-08-31

    申请号:US18143549

    申请日:2023-05-04

    CPC classification number: H01L29/7853 H01L29/66818 H01L29/165 H01L29/7851

    Abstract: Fin smoothing, and integrated circuit structures resulting therefrom, are described. For example, an integrated circuit structure includes a semiconductor fin having a protruding fin portion above an isolation structure, the protruding fin portion having substantially vertical sidewalls. The semiconductor fin further includes a sub-fin portion within an opening in the isolation structure, the sub-fin portion having a different semiconductor material than the protruding fin portion. The sub-fin portion has a width greater than or less than a width of the protruding portion where the sub-fin portion meets the protruding portion. A gate stack is over and conformal with the protruding fin portion of the semiconductor fin. A first source or drain region at a first side of the gate stack, and a second source or drain region at a second side of the gate stack opposite the first side of the gate stack.

    INTEGRATED CIRCUIT STRUCTURES HAVING DIELECTRIC GATE WALL AND DIELECTRIC GATE PLUG

    公开(公告)号:US20230093657A1

    公开(公告)日:2023-03-23

    申请号:US17482228

    申请日:2021-09-22

    Abstract: Integrated circuit structures having a dielectric gate wall and a dielectric gate plug, and methods of fabricating integrated circuit structures having a dielectric gate wall and a dielectric gate plug, are described. For example, an integrated circuit structure includes a sub-fin having a portion protruding above a shallow trench isolation (STI) structure. A plurality of horizontally stacked nanowires is over the sub-fin. A gate dielectric material layer is over the protruding portion of the sub-fin, over the STI structure, and surrounding the horizontally stacked nanowires. A conductive gate layer is over the gate dielectric material layer. A conductive gate fill material is over the conductive gate layer. A dielectric gate wall is laterally spaced apart from the sub-fin and the plurality of horizontally stacked nanowires, the dielectric gate wall on the STI structure. A dielectric gate plug is on the dielectric gate wall.

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