Patent ID: 8214776

Claim:
A method for generating mask data that is used for a method for manufacturing a semiconductor device, the method for generating mask data comprising: using a computer, performing each of: (a) the step of setting a restriction region pattern that defines a restriction region; (b) the step of setting dummy patterns that define the dummy wiring layers; and (c) the step of mixing the restriction region pattern and the dummy patterns, wherein each of the dummy patterns that at least partially overlap the restriction region pattern are entirely excluded from being formed, the semiconductor device including a first wiring layer and a plurality of dummy wiring layers provided in an identical level as the first wiring layer, wherein, assuming a row direction and first virtual linear lines extending in a direction that traverses the row direction, the first virtual linear lines and the row direction define an angle of 2-40 degrees, and the dummy wiring layers are disposed on the first virtual linear lines.