Patent ID: 7576405
Filing Date: 2009-08-18
Classification: H01L,H03K

Abstract:
1. A semiconductor device comprising: a power control region within which function cells are arranged; a basic power supply line overlapping said power control region, and positioned in a power supply interconnection layer; a virtual power supply line arranged in said power control region in a direction perpendicular to said basic power supply line, said function cells being connected to said virtual power supply line; a ground line arranged in said power control region in said direction perpendicular to said basic power supply line; a switch cell including: a via contact connected between said basic power supply line and said metal interconnection, wherein said switch element receives a power supply voltage from said basic power supply line through said metal interconnection and said via contact to feed said received power supply voltage to said function cells within said power control region, wherein said switch cell is positioned within power control region, wherein said switch element is positioned adjacent to said via contact within said switch cell, and wherein said metal interconnection is positioned between said virtual power supply line and said ground line within said switch cell.