Patent ID: 8217442

Claim:
A semiconductor device comprising: a semiconductor substrate; a plurality of first conductive patterns provided in a first direction over the semiconductor substrate; a second conductive pattern provided in parallel to the plurality of first conductive patterns over the semiconductor substrate, the second conductive pattern provided on an outside of an outermost first conductive pattern of said first conductive patterns; a first insulation film formed over the plurality of first conductive patterns and the second conductive pattern; and a third conductive pattern formed over the first insulation film; wherein the second conductive pattern includes a first sidewall and a second sidewall opposite to the first sidewall, one of the first conductive patterns adjacent to the second conductive pattern includes a third sidewall facing the first sidewall; wherein a first thickness of the first sidewall is thicker than a second thickness of the second sidewall, a third thickness of the third sidewall is thicker than the second thickness, and the first thickness substantially equal to the third thickness; wherein the plurality of first conductive patterns are electrically isolated from each others, and the second conductive pattern is electrically isolated from the plurality of first conductive patterns.