Patent ID: 7446043
Filing Date: 2008-11-04
Classification: H01L

Abstract:
1. A contact structure comprising: a substrate; a first conductive region and a second conductive region on the substrate; an insulating layer covering the first and second conductive regions; a first contact hole and a second contact hole through the insulating layer and exposing the first and second conductive regions, respectively; a first silicide layer on the first conductive region exposed by the first contact hole and having a first thickness; and a second silicide layer on the second conductive region exposed by the second contact hole and having a second thickness that is different than the first thickness, wherein the first and second conductive regions are a first impurity region and a second impurity region, respectively, wherein the first thickness is larger than the second thickness, and the first impurity region has a greater junction depth than that of the second impurity region.