Patent ID: 7948086

Claim:
A semiconductor device comprising: semiconductor elements formed in a semiconductor substrate; a first interlayer insulation film formed over the semiconductor elements; a first wiring, a plurality of first dummy wirings and a plurality of second dummy wirings formed over the first interlayer insulation film, respectively; and a second interlayer insulation film formed over the first wiring, the first dummy wirings and the second dummy wirings, wherein the first wiring is electrically connected with the semiconductor elements, wherein the first dummy wirings and the second dummy wirings are not electrically connected with the semiconductor elements, wherein a planar size of each of the first dummy wirings is larger than a planar size of each of the second dummy wirings, wherein each of the first dummy wirings is arranged with same pitch, wherein each of the second dummy wirings is arranged with same pitch, and wherein the second dummy wirings are arranged next to the first wiring, and between the first wiring and the first dummy wirings.