Patent ID: 7986036
Filing Date: 2011-07-26
Classification: H01L

Abstract:
1. A power/ground (P/G) network of an integrated circuit, wherein rows of standard cells in the integrated circuit are horizontally arranged, the P/G network including horizontal and vertical metal lines arranged in different metal layers, the horizontal metal lines including horizontal power metal lines and horizontal ground lines, the vertical metal lines including vertical power metal lines and vertical ground lines, the power lines and the ground lines in the horizontal metal lines respectively interconnected with the power lines and the ground lines of the vertical metal lines; the P/G network being characterized in that: the width of the horizontal metal lines in the P/G network is such that the horizontal power metal lines only cover the power lines in the rows of the standard cells, while the horizontal ground lines only cover the ground lines of the rows of the standard cells, wherein when two horizontal metal lines are directly adjacent to each other, the width of the horizontal metal lines being smaller than: 1.5×standard height−0.5×interval between metal lines−0.5×line width of standard cell−1×inter-line interval, wherein the interval between the metal lines is the interval that should be reserved between two horizontal metal lines.