Power grid, IC and method for placing power grid

    公开(公告)号:US11068638B2

    公开(公告)日:2021-07-20

    申请号:US16875060

    申请日:2020-05-15

    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, 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. The second power lines are parallel to the first power lines, and the first and second power lines are interlaced in the first metal layer. The third power lines are perpendicular to the first power lines. The fourth power lines are parallel to the third power lines, and the third and fourth power lines are interlaced in the second metal layer. A first power pitch between two adjacent third power lines is greater than a second power pitch between two adjacent fourth power lines.

    TECHNIQUES BASED ON ELECTROMIGRATION CHARACTERISTICS OF CELL INTERCONNECT

    公开(公告)号:US20190108304A1

    公开(公告)日:2019-04-11

    申请号:US16205441

    申请日:2018-11-30

    Abstract: In some embodiments, an initial circuit arrangement is provided. The initial circuit arrangement includes cells that include default-rule lines and non-default-rule lines. Line widths of the default-rule lines are selectively increased for a first cell in the initial circuit arrangement, thereby providing a first modified circuit arrangement. A first maximum capacitance value is calculated for the first cell of the first modified circuit arrangement. A second modified circuit arrangement is provided by selectively increasing line widths of the non-default-rule lines in the first modified circuit arrangement. A second maximum capacitance value is calculated for the first cell of the second modified circuit arrangement. A line width of a first non-default-rule line is selectively reduced based on whether the first maximum capacitance value adheres to a predetermined relationship with the second maximum capacitance value. The second modified circuit arrangement is manufactured on a semiconductor substrate.

    Power grid of integrated circuit
    5.
    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.

    Metal lines for preventing AC electromigration
    6.
    发明授权
    Metal lines for preventing AC electromigration 有权
    用于防止交流电迁移的金属线

    公开(公告)号:US09152751B2

    公开(公告)日:2015-10-06

    申请号:US14267537

    申请日:2014-05-01

    Abstract: A method is disclosed that includes the operations outlined below. An effective current pulse width of a maximum peak is determined based on a waveform function of a current having multiple peaks within a waveform period in a metal segment of a metal line in at least one design file of a semiconductor device to compute a duty ratio between the effective current pulse width and the waveform period. A maximum direct current limit of the metal segment is determined according to physical characteristics of the metal segment. An alternating current electromigration (AC EM) current limit is determined according to a ratio between the maximum direct current limit and a function of the duty ratio. The metal segment is included with the physical characteristics in the at least one design file when the maximum peak of the current does not exceed the AC EM current limit.

    Abstract translation: 公开了一种包括以下概述的操作的方法。 基于在半导体器件的至少一个设计文件中的金属线的金属部分的波形周期内具有多个峰值的电流的波形函数来确定最大峰值的有效电流脉冲宽度,以计算半导体器件的至少一个设计文件中的占空比 有效电流脉冲宽度和波形周期。 根据金属段的物理特性确定金属段的最大直流极限。 根据最大直流限制和占空比函数之间的比例来确定交流电流(AC EM)电流限制。 当电流的最大峰值不超过AC EM电流限制时,金属部分包括在至少一个设计文件中的物理特性。

    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.

    METAL LINES FOR PREVENTING AC ELECTROMIGRATION
    10.
    发明申请
    METAL LINES FOR PREVENTING AC ELECTROMIGRATION 有权
    用于防止交流电气的金属线

    公开(公告)号:US20150095873A1

    公开(公告)日:2015-04-02

    申请号:US14267537

    申请日:2014-05-01

    Abstract: A method is disclosed that includes the operations outlined below. An effective current pulse width of a maximum peak is determined based on a waveform function of a current having multiple peaks within a waveform period in a metal segment of a metal line in at least one design file of a semiconductor device to compute a duty ratio between the effective current pulse width and the waveform period. A maximum direct current limit of the metal segment is determined according to physical characteristics of the metal segment. An alternating current electromigration (AC EM) current limit is determined according to a ratio between the maximum direct current limit and a function of the duty ratio. The metal segment is included with the physical characteristics in the at least one design file when the maximum peak of the current does not exceed the AC EM current limit.

    Abstract translation: 公开了一种包括以下概述的操作的方法。 基于在半导体器件的至少一个设计文件中的金属线的金属部分的波形周期内具有多个峰值的电流的波形函数来确定最大峰值的有效电流脉冲宽度,以计算半导体器件的至少一个设计文件中的占空比 有效电流脉冲宽度和波形周期。 根据金属段的物理特性确定金属段的最大直流极限。 根据最大直流限制和占空比函数之间的比例来确定交流电流(AC EM)电流限制。 当电流的最大峰值不超过AC EM电流限制时,金属部分包括在至少一个设计文件中的物理特性。

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