Patent ID: 8710552

Claim:
A semiconductor device including a region functionally defined by a plurality of cells arranged in a first direction to fill a region between first and second cell boundaries mutually spaced and extending in said first direction, the semiconductor device comprising: a semiconductor substrate; and a plurality of gate electrodes extending on said semiconductor substrate in a second direction orthogonal to said first direction, and arranged in each of said plurality of cells with a first pitch in said first direction, said plurality of cells each having a width of an internal multiple of said first pitch in said first direction, wherein: said cells each include a first region and a second region, said first region being sandwiched by said first cell boundary and said second region, said second region being sandwiched by said first region and said second cell boundary; and said semiconductor substrate includes in said first region a first well of a first conduction type, and includes in said second region a second well of a second conduction type different from said first conduction type, the semiconductor device further comprising: a first diffusion region provided on a portion of said first well and being of said second conduction type; and a second diffusion region provided on a portion of said second well and being of said first conduction type.