Patent ID: 8283718
Filing Date: 2012-10-09
Classification: H01L

Abstract:
1. An integrated circuit system comprising: a first semi-conducting layer over a substrate; a spacer stack having a gap filler adjacent to the first semi-conducting layer and an inter-layer dielectric over the gap filler, the gap filler extending from the first semi-conducting layer to an adjacent second semi-conducting layer, substantially filling a bottom portion of a gap between the first semi-conducting layer and the adjacent second semi-conducting layer and preventing adverse contamination of the first semi-conducting layer and the adjacent second semi-conducting layer; a transition layer having a recess over the first semi-conducting layer and adjacent to the spacer stack; and a metal layer in the recess; wherein the gap filler comprises a single first dielectric material and the inter-layer dielectric comprises a second dielectric material different from the single first dielectric material.