Patent ID: 7071055
Filing Date: 2006-07-04
Classification: H01L

Abstract:
1. A method, comprising: forming an active device on a substrate; forming a passive device on the substrate; forming a contact structure including a barrier structure for coupling the passive device to the active device, wherein the barrier structure is vertically situated on opposing sides of the contact structure, wherein forming the contact structure further includes forming a first contact barrier layer and a second contact barrier layer fabricated from different materials within the contact structure, wherein the second contact barrier layer restricts electrode oxidation and the first contact structure restricts atomic migration from or to the substrate; and encircling the contact structure, wherein the barrier structure is formed of a layer of silicon nitride, and a width of the layer of the silicon nitride is less than a width of the first and second contact barrier layers, and an outer vertical side contacts an insulating layer formed of a different material, and wherein a top of the second contact barrier layer does not extend beyond a top of the barrier structure.