Patent ID: 8723237

Claim:
A semiconductor device comprising: first active regions provided in a semiconductor substrate; second active regions provided in the semiconductor substrate; gate wires which intersect the first active regions and the second active regions; first transistors which are provided on the first active regions and which include first gate electrodes, each of which is a part of each gate wire; second transistors which are provided on the second active regions and which include second gate electrodes, each of which is a part of each gate wire; at least one compressive stress film which is provided on a region including the first active regions and which covers the first transistors; and a tensile stress film which is provided on a region including the second active regions adjacent to the compressive stress film and which covers the second transistors, wherein the distances in a longitudinal direction of the gate wires from end portions of first regions in which the first active regions and the gate wires are overlapped with each other to end portions of the at least one compressive stress film are set to a first value, wherein the at least one compressive stress film is surrounded by the tensile stress film, wherein the at least one compressive stress film includes a projective portion at a portion where the at least one compressive stress film is contact with the tensile stress film.