Power grid of integrated circuit
    11.
    发明授权

    公开(公告)号:US09852989B1

    公开(公告)日:2017-12-26

    申请号:US15397036

    申请日:2017-01-03

    CPC classification number: H01L23/5286 H01L23/5226

    Abstract: Power grids of an IC are provided. A power grid includes first power traces disposed in a first metal layer and parallel to a first direction, second power traces disposed in a second metal layer and parallel to a second direction that is perpendicular to the first direction, and third power traces disposed in the first metal layer parallel to the first direction. The first power traces arranged in the same straight line are separated from each other by a plurality of first gaps. The third power traces arranged in the same straight line are separated from each other by a plurality of second gaps. Each first gap is surrounded by the two adjacent third power traces. Each second gap is surrounded by the two adjacent first power traces. The first power traces are coupled to the third power traces via the second power traces.

    Cell placement site optimization
    17.
    发明授权

    公开(公告)号:US11182527B2

    公开(公告)日:2021-11-23

    申请号:US16837449

    申请日:2020-04-01

    Abstract: The present disclosure describes an example method for cell placement in an integrated circuit (IC) layout design. The method includes partitioning a layout area into one or more contiguous units, where each unit includes a plurality of placement sites. The method also includes mapping a first set of pin locations and a second set of pin locations to each of the one or more contiguous units. The method further includes placing a cell in the one or more contiguous units, where the cell is retrieved from a cell library that includes a plurality of pin locations for the cell. The placement of the cell is based on an allocation of one or more pins associated with the cell to at least one of a pin track from the first plurality of pin locations, a pin track from second plurality of pin locations, or a combination thereof.

    Power grid, IC and method for placing power grid

    公开(公告)号:US10672709B2

    公开(公告)日:2020-06-02

    申请号:US15651165

    申请日:2017-07-17

    Abstract: A power grid of an integrated circuit (IC) is provided. The power grid includes a plurality of first power lines formed in a first metal layer, a plurality of second power lines formed in the first metal layer and parallel to the first power lines, a plurality of third power lines formed in a second metal layer, and a plurality of fourth power lines formed in the second metal layer and parallel to the third power lines. The first and second power lines are interlaced in the first metal layer. The third and fourth power lines are interlaced in the second metal layer. Distances from the individual first power line to the two adjacent second power lines are the same, and distances from the individual third power line to the two adjacent fourth power lines are different.

    CIRCUIT TESTING AND MANUFACTURE USING MULTIPLE TIMING LIBRARIES

    公开(公告)号:US20200074030A1

    公开(公告)日:2020-03-05

    申请号:US16676210

    申请日:2019-11-06

    Abstract: A method and system for manufacturing a circuit is disclosed. In some embodiments, the system includes: at least one processor configured to: generate a first timing library for a first set of circuit elements for a first set of input parameters based on device characteristics for each of the circuit elements in the first set of circuit elements, and storing the determined device characteristics in a database; and generating a second timing library for a second set of circuit elements for a second set of input parameters based on device characteristics previously stored in the database for a first subset of the second set of circuit elements and determining device characteristics for a second subset of the second set of circuit elements using one of an aging simulation or a stress simulation; and a circuit generation system, coupled to the at least one processor, the circuit generation system configured to form a circuit on a substrate, wherein the circuit includes at least one of the first set of circuit elements or the second set of circuit elements.

    Constrained cell placement
    20.
    发明授权

    公开(公告)号:US10565341B2

    公开(公告)日:2020-02-18

    申请号:US15878818

    申请日:2018-01-24

    Abstract: The present disclosure describes an example method for cell placement in an integrated circuit layout design. The method includes retrieving, from a cell library, first and second cells each including a first local metal track proximate to a top boundary and a second local metal track proximate to a bottom boundary. The method includes placing, by a processor, the first and second cells in a layout area including global metal tracks of first and second types. Each global metal track of the first type and each global metal tracks of the second type alternate between one another in the layout area. The first and second local metal tracks of the first cell is aligned with adjacent first global metal track of the first and second types, respectively. The first and second local metal tracks of the second cell is aligned with adjacent second global metal track of the first and second types, respectively.

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