Patent ID: 7943453

Claim:
A semiconductor structure fabrication method, comprising: providing a semiconductor structure which includes (a) a semiconductor substrate, (b) a gate dielectric layer on top of and in direct physical contact with the semiconductor substrate at a surface of the semiconductor substrate, (c) a first metal containing region on top of and in direct physical contact with the gate dielectric layer, and (d) a first patterned mask layer on top of and in direct physical contact with the first metal containing region; and forming a second metal containing layer on top of and in direct physical contact with the first metal containing region, the first patterned mask layer, and the gate dielectric layer, wherein said forming the second metal containing layer results in the second metal containing layer being in direct physical contact with a surface of the first metal containing region, and wherein the surface of the first metal containing region is perpendicular to the surface of the semiconductor substrate.