Patent ID: 8782586
Filing Date: 2014-07-15
Classification: G06F,Y02P

Abstract:
1. A method of routing interconnections of an integrated circuit design, wherein the interconnections in a layer of the integrated circuit design are to be manufactured by using a first photomask and a second photomask, the method of routing comprising: using a processor to perform a process, the process comprising: determining or identifying an array of routing tracks oriented along a preferred direction, wherein a routing track constitutes a zero-width line on which one or more centerlines of one or more interconnects lie; pre-coloring at least two adjacent routing tracks from the array of the routing tracks with respective color designations corresponding to different photomasks; and routing interconnects for the integrated circuit design along the at least two adjacent routing tracks such that the interconnects assume the respective color designations of the at least two adjacent routing tracks and are associated with different photomasks according to the respective color designations of the at least two adjacent routing tracks.