The invention is directed towards methods and apparatus for defining Manhattan power grid structures having a reduced number of vias for {HEAD ~ use} in {TAIL ~ an integrated circuit} 
The invention is directed towards methods and apparatus for defining Manhattan power grid structures having a reduced number of vias for { HEAD ~ use } in { TAIL ~ an integrated circuit }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL