Backside Contacts for Signal Routing
    1.
    发明公开

    公开(公告)号:US20240070365A1

    公开(公告)日:2024-02-29

    申请号:US17823644

    申请日:2022-08-31

    Applicant: Apple Inc.

    CPC classification number: G06F30/392 G06F30/394

    Abstract: A cell layout that may be implemented in FinFET devices or other FET devices is disclosed. The cell layout utilizes an isolation gate structure to provide routing between a signal input of an active gate and a backside metal layer. The isolation gate structure includes a metal fill surrounded by gate spacers. The metal fill connects between the topside layers in the device and the backside layer in the device. The metal fill may be connected to the signal input of the active gate through routing either in a topside metal layer or a metal wire placed in a topside insulating layer. The isolation gate structure can be part of any standard cell being placed at a cell boundary or inside the cell to provide access to backside signal routing. Additionally, filler cells with isolation gate structures may provide backside routing connections for adjacent functional cells.

    Leakage Current Reduction in Electrical Isolation Gate Structures

    公开(公告)号:US20230005908A1

    公开(公告)日:2023-01-05

    申请号:US17930188

    申请日:2022-09-07

    Applicant: Apple Inc.

    Abstract: In an embodiment, an integrated circuit includes transistors in different active regions, electrically isolated using single diffusion break isolation. The single diffusion break isolation includes a first dummy transistor that has a different threshold voltage than the transistors in either active region for which the single diffusion break is creating isolation. The first dummy transistor may have lower leakage current than transistors in either active region, creating effective isolation between the active regions and consuming relatively small amounts of power due to the lower leakage currents.

    Leakage current reduction in electrical isolation gate structures

    公开(公告)号:US10700065B2

    公开(公告)日:2020-06-30

    申请号:US16156461

    申请日:2018-10-10

    Applicant: Apple Inc.

    Abstract: In an embodiment, an integrated circuit includes transistors in different active regions, electrically isolated using single diffusion break isolation. The single diffusion break isolation includes a first dummy transistor that has a different threshold voltage than the transistors in either active region for which the single diffusion break is creating isolation. The first dummy transistor may have lower leakage current than transistors in either active region, creating effective isolation between the active regions and consuming relatively small amounts of power due to the lower leakage currents.

    Device Structure for Inducing Layout Dependent Threshold Voltage Shift

    公开(公告)号:US20250107229A1

    公开(公告)日:2025-03-27

    申请号:US18888284

    申请日:2024-09-18

    Applicant: Apple Inc.

    Abstract: Device layouts for integrated circuit devices that include threshold voltage shift induced by placement of alternate work function metals adjacent active gates are disclosed. The device layouts include a single epitaxy for active regions in the device with common source/drain regions among the active region rows in the layouts. Metal gate sections above one or more rows of active regions may be replaced with metal of a different work function in inactive regions of the layout. The different work function metal in the inactive regions will induce threshold voltage shift in adjacent (neighboring) active transistors of the device layouts.

    Stacked SRAM Cell Architecture
    5.
    发明公开

    公开(公告)号:US20240107737A1

    公开(公告)日:2024-03-28

    申请号:US18448607

    申请日:2023-08-11

    Applicant: Apple Inc.

    CPC classification number: H10B10/125

    Abstract: A SRAM cell layout that implements stacked transistors is disclosed. The cell layout utilizes both topside metal routing and backside metal routing along with stacked transistors to provide multiple transistors for implementation of inverters and pass gates in a memory cell. Various connection routes between components of the transistors (e.g., gates, sources, and drains) are made to allow cross-coupling between inverters in the memory cell.

    Leakage Current Reduction in Electrical Isolation Gate Structures

    公开(公告)号:US20200118999A1

    公开(公告)日:2020-04-16

    申请号:US16156461

    申请日:2018-10-10

    Applicant: Apple Inc.

    Abstract: In an embodiment, an integrated circuit includes transistors in different active regions, electrically isolated using single diffusion break isolation. The single diffusion break isolation includes a first dummy transistor that has a different threshold voltage than the transistors in either active region for which the single diffusion break is creating isolation. The first dummy transistor may have lower leakage current than transistors in either active region, creating effective isolation between the active regions and consuming relatively small amounts of power due to the lower leakage currents.

    Stacked FET Standard Cell Architecture
    8.
    发明公开

    公开(公告)号:US20240105709A1

    公开(公告)日:2024-03-28

    申请号:US18448573

    申请日:2023-08-11

    Applicant: Apple Inc.

    CPC classification number: H01L27/0207 H01L27/0922 H10B10/12

    Abstract: A cell layout that implements stacked transistors is disclosed. The cell layout utilizes both topside metal routing and backside metal routing. Various connection routes between components of the transistors (e.g., gates, sources, and drains) and either the topside metal routing or the backside metal routing can be made. The specific connection routes can be determined based on a desired device construction. Thus, the cell layout disclosed enables various devices to be constructed based on a basic cell structure.

    Leakage Current Reduction in Electrical Isolation Gate Structures

    公开(公告)号:US20200328205A1

    公开(公告)日:2020-10-15

    申请号:US16913770

    申请日:2020-06-26

    Applicant: Apple Inc.

    Abstract: In an embodiment, an integrated circuit includes transistors in different active regions, electrically isolated using single diffusion break isolation. The single diffusion break isolation includes a first dummy transistor that has a different threshold voltage than the transistors in either active region for which the single diffusion break is creating isolation. The first dummy transistor may have lower leakage current than transistors in either active region, creating effective isolation between the active regions and consuming relatively small amounts of power due to the lower leakage currents.

    Leakage current reduction in electrical isolation gate structures

    公开(公告)号:US11469226B2

    公开(公告)日:2022-10-11

    申请号:US16913770

    申请日:2020-06-26

    Applicant: Apple Inc.

    Abstract: In an embodiment, an integrated circuit includes transistors in different active regions, electrically isolated using single diffusion break isolation. The single diffusion break isolation includes a first dummy transistor that has a different threshold voltage than the transistors in either active region for which the single diffusion break is creating isolation. The first dummy transistor may have lower leakage current than transistors in either active region, creating effective isolation between the active regions and consuming relatively small amounts of power due to the lower leakage currents.

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