Patent ID: 8159013

Claim:
A semiconductor integrated circuit device comprising: a power supply line and a ground line each placed to extend in a first direction; and first and second cells placed in a region interposed between the power supply line and the ground line to be adjacent to each other in the first direction, and each having a transistor and an intra-cell line each for implementing a circuit function, wherein a dummy metal wiring line extending in a second direction orthogonal to the first direction is placed in a boundary portion between the first and second cells so as not to short-circuit the power supply line and the ground line, a first metal wiring line in the first cell has a portion parallel with the dummy metal wiring line, the portion being connected with source or drain of a transistor and closest to the boundary portion between the first and second cells among the intra-cell line in the first cell, and the first metal wiring line and the dummy metal wiring line are formed in a same wiring layer.