Patent ID: 8748987

Claim:
A semiconductor device, comprising: a standard cell having three or more gate patterns extending in a first direction and arranged at an equal pitch along a second direction orthogonal to the first direction; and a diode cell located next to the standard cell in the first direction which functions as a diode, wherein: the gate patterns included in the standard cell terminate near a cell boundary between the standard cell and the diode cell, with respective end portions located at a same position in the first direction and having an equal width in the second direction, the diode cell includes: at least one diffusion region pattern; and a plurality of gate patterns extending in the first direction and having a plurality of opposite end portions which are located near the cell boundary and opposed to the end portions of the gate patterns included in the standard cell, and the at least one diffusion region pattern exists on both sides in the second direction of at least one of the plurality of gate patterns in the diode cell, which functions as a gate of a transistor.