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IC layouts with at least one layer that has more than one preferred interconnect direction, and method and apparatus for generating such a layout

  • US 6,973,634 B1
  • Filed: 08/26/2002
  • Issued: 12/06/2005
  • Est. Priority Date: 01/22/2002
  • Status: Expired due to Fees
First Claim
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1. A region of an integrated-circuit (“

  • IC”

    ) layout, the IC-layout region comprising a plurality of interconnect layers, wherein at least a particular layer has at least two preferred interconnect directions in that region, wherein in no part of the region on the particular layer are routes in either of the two preferred interconnect directions assessed a non-preferred direction routing penalty that results in one of the two preferred interconnect directions being more preferable than the other preferred interconnect direction.

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