Patent ID: 8354696

Claim:
A semiconductor device comprising: a plurality of logic circuits connected to each other through input and output terminals thereof, the plurality of logic circuits comprising a first sub-plurality of logic circuits coupled to a first one of different power systems and a second sub-plurality of logic circuits coupled to a second one of the different power systems, the first sub-plurality of logic circuits being laid out and adjacent to each other in a first direction, the second sub-plurality of logic circuits being laid out and adjacent to each other in the first direction, the first sub-plurality of logic circuits and the second sub-plurality of logic circuits being laid out and adjacent to each other in the first direction, the first sub-plurality of logic circuits comprising a first logic circuit and a second logic circuit, the second logic circuit being adjacent to the first logic circuit, the second sub-plurality of logic circuits comprising a third logic circuit and a fourth logic circuit, the fourth logic circuit being adjacent to the third logic circuit, the first logic circuit comprising a first element which comprises a first diffusion layer, the second logic circuit comprising a second element which comprises a second diffusion layer, the third logic circuit comprising a third element which comprises a third diffusion layer, the fourth logic circuit comprising a fourth element which comprises a fourth diffusion layer, wherein a first common diffusion layer is shared by the first diffusion layer and the second diffusion layer, a second common diffusion layer is shared by the third diffusion layer and the fourth diffusion layer, the second logic circuit further comprises a fifth element which comprises a fifth diffusion layer, the third logic circuit further comprises a sixth element which comprises a sixth diffusion layer, the fifth diffusion layer and the sixth diffusion layer adjoin without including other diffusion layers and, the fifth diffusion layer and the sixth diffusion layer are mutually separated.