Patent ID: 7902671

Claim:
A semiconductor device having a dummy pattern comprising: a semiconductor substrate, wherein the semiconductor comprises a pattern region and a dummy region, wherein the dummy region is located between the pattern regions; an etching stop film formed on the semiconductor substrate; an interlayer dielectric film arranged over the etching stop film; a first pattern and a second pattern spaced apart from each other on the interlayer dielectric film, wherein the first pattern and the second pattern is located on the pattern region; a contact plug connecting as least one of the first and the second pattern with the semiconductor substrate; a dummy pattern located on the interlayer dielectric film of the dummy region between the first pattern and the second pattern; a dummy plug contacted on a bottom surface of the dummy pattern, wherein the dummy plug fixes the dummy pattern on the interlayer dielectric film, wherein the dummy plug is formed in the interlayer dielectric film without contacting the semiconductor substrate.