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Method and device for deleting redundant virtual metal lines on Nets

A technology for superfluous metals and metals, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as time-consuming, prone to error operation, etc., to achieve the effect of enhancing reliability and improving efficiency

Active Publication Date: 2018-04-27
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When removing redundant metal wires on the Net, external tools are needed, and at the same time, it must be checked and operated manually. Especially when the amount of layout data is large, the entire process takes too long and is prone to misoperation

Method used

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  • Method and device for deleting redundant virtual metal lines on Nets
  • Method and device for deleting redundant virtual metal lines on Nets
  • Method and device for deleting redundant virtual metal lines on Nets

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Embodiment Construction

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] The invention provides a method for deleting redundant metal wires on the Net, such as figure 1 As shown, the method includes:

[0042] S11, analyze GDS (Graphic Data Stream, Graphic Data Stream) file, set up the data type that represents graph;

[0043] S12. Converting the path in the data type representing the graph into a polygon;...

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PUM

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Abstract

The invention provides a method and device for deleting redundant virtual metal lines on Nets. The method includes the steps of parsing a graphic data flow file, and creating a data type of a represented graph; converting a path in the data type of the represented graph into a polygon; combining virtual metal which is already converted into a polygonal shape at the same layer, and obtaining a combined virtual polygonal metal set at the same layer; finding all Nets in the virtual polygonal metal set at the same layer; on the premise of accurate DRC and LVS, deleting redundant virtual metal in all the Nets. There is no need to seek for the help of external tools, manual checking and operation are not required, redundant virtual metal lines on the Nets can be fast and accurately deleted, andtherefore the efficiency and reliability are improved.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a method and device for deleting redundant metal lines on a Net. Background technique [0002] With the development of integrated circuits, the size of the chip is getting smaller and smaller, and the parasitic resistance and capacitance on the Net (circuit node) have an increasing impact on the performance of the entire chip. The metal is deleted, because the excess metal may be used for other purposes. Especially when it comes to the 7nm process, it is necessary to spread the metal in a grid format before drawing the circuit, which leads to the fact that almost every Net in the final layout will have excess metal. At this time, if you want to remove the excess metal , It takes a lot of time, and it may cause errors in DRC (Design Rule Check, Design Rule Check) or LVS (Layout Versus Schematics, consistency check of layout and schematic) verification due to human err...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/39
Inventor 孙国清卞强
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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