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    • 2. 发明申请
    • Power and ground shield mesh to remove both capacitive and inductive signal coupling effects of routing in integrated circuit device
    • 电源和接地屏蔽网可以消除集成电路设备中路由的电容和电感信号耦合效应
    • US20070120261A1
    • 2007-05-31
    • US11698330
    • 2007-01-25
    • Iu-Meng Ho
    • Iu-Meng Ho
    • H01L23/52
    • H01L23/5286H01L23/5225H01L27/118H01L2924/0002H01L2924/3011H01L2924/00
    • A power and ground shield mesh to remove both capacitive and inductive signal coupling effects of routing in integrated circuit device. An embodiment describes the routing of a shield mesh of both power and ground lines to remove noise created by capacitive and inductive coupling. Relatively long signal lines are routed in between fully connected power and ground shield mesh which may be generated by a router during the signal routing phase or during power mesh routing phase. Leaving only the odd tracks or the even tracks for signal routing, power mesh (VDD) and ground mesh (VSS) are routed and fully interconnected leaving shorter segments and thereby reducing the RC effect of the circuit device. Another embodiment presents a technique where the signals are shielded using the power and ground mesh for a gridless routing. Another embodiment presents a multi-layer grid routing technique where signals are routed on even grid and the power and ground lines are routed on odd grid. A similar embodiment represents grid routing technique where the signals are routed between layers N and N+1. Another embodiment enables signals to be shielded by opposite power and ground grids on left, right, top and bottom. Additional embodiments also include utilization of similar mesh utilized in standard cell and/or in the gate array routing area or any other area where any other signal line is to be shielded.
    • 电源和接地屏蔽网格,用于消除集成电路设备中路由的电容和电感信号耦合效应。 一个实施例描述了电源线和地线的屏蔽网路的布线,以消除由电容耦合和电感耦合产生的噪声。 相对较长的信号线路路由在完全连接的电源和接地屏蔽网之间,这可能在信号路由阶段期间或在电力网状路由阶段期间由路由器生成。 只剩下奇迹或偶数轨道进行信号路由,功率网(VDD)和地网(VSS)路由并完全互连,留下较短的段,从而降低电路设备的RC效应。 另一个实施例提出了一种技术,其中使用用于无栅格布线的电力和地面网格来屏蔽信号。 另一个实施例提出了一种多层网格路由技术,其中信号在均匀网格上布线,并且电力和地线在奇数网格上布线。 类似的实施例表示网格路由技术,其中信号在层N和N + 1之间路由。 另一个实施例使信号能够被左,右,上,下相反的电源和接地网屏蔽。 另外的实施例还包括利用在标准单元中和/或门阵列布线区域或其它任何其它信号线被屏蔽的任何其它区域中使用的类似网格。