Patent ID: 8043960
Filing Date: 2011-10-25
Classification: H01L

Abstract:
1. A method for fabricating a contact structure of a semiconductor device comprising the steps of: forming a lower conductive pattern over a predetermined region of a semiconductor substrate; forming a mold layer over the semiconductor substrate including the lower conductive pattern; forming an intaglio pattern by patterning the mold layer, wherein the intaglio pattern exposes a predetermined region of the lower conductive pattern; forming a concave region at a predetermined region of a top surface of the lower conductive pattern by performing a post-treatment process at the semiconductor substrate including the intaglio pattern; forming an embedding conductive layer filling the concave region, wherein edges of the concave region are placed under the mold layer such that the embedding conductive layer further fills the edges of the concave region; and forming an upper conductive pattern filling the intaglio pattern.