Patent ID: 8006218

Claim:
A power routing arrangement method applied in an integrated circuit having multiple power domains, the arrangement method comprising: forming a first partial local power mesh according to the position of a first power domain of the integrated circuit by an automatic placement and routing (APR) tool; forming a second partial local power mesh according to the position of a second power domain of the integrated circuit by the APR tool; forming a global power mesh that is utilized to provide the power needed by the first and the second power domains by the APR tool; coupling the first partial local power mesh to the global power mesh and the first power domain by the APR tool; and coupling the second partial local power mesh to the global power mesh and the second power domain by the APR tool; wherein the global power mesh includes a plurality of horizontal power supply wires placed on a first metal layer and a plurality of vertical power supply wires placed on a second metal layer; and wherein the first metal layer and the second metal layer are different layers.