Patent ID: 9099474
Filing Date: 2015-08-04
Classification: H01L

Abstract:
1. A semiconductor structure, comprising: a semiconductor substrate having a functional gate structure formed on a semiconductor substrate with a gate-last scheme that includes a first layer formed on the semiconductor substrate, a gate electrode formed on the first layer, and a second layer formed on sides of the gate electrode and on a bottom of the gate electrode; a sidewall layer formed on the side of the first layer and the side of the second layer; an impurity region formed on the semiconductor substrate; a silicide layer comprising a silicide formed over at least one of the impurity region or a region without additional impurities; and at least one dielectric layer formed over the silicide layer, the at least one dielectric layer having a via and a contact opening pattern formed therein, wherein an area of the silicide layer is larger than an area of the contact opening, and the first layer is only formed between the semiconductor substrate and the second layer on the bottom of the gate electrode.