Patent ID: 7960036
Filing Date: 2011-06-14
Classification: H01L,Y10T

Abstract:
1. A structure comprising: a first metal layer Mx formed in a lower dielectric layer; a second metal layer Mx+1 above the first metal layer Mx and formed in an intermediate dielectric layer; a metal line extending to and in electrical contact with the second metal layer Mx+1; and a second metal line electrically isolated from the first metal layer Mx and the second metal layer Mx+1 and extending from an upper metal layer formed in an upper dielectric layer to a depth of at least a lower portion of the second metal layer Mx+1 and above the first metal layer Mx, wherein the second metal line is of a different shape than the metal line and the upper metal layer includes two metal layers, one of which is in electrical contact with the second metal layer Mx+1 via the metal line, and wherein the different shape is a shape elongated in a horizontal direction with respect to the first metal layer Mx and the second metal layer Mx+1, from a top down view.