Patent ID: 7153771
Filing Date: 2006-12-26
Classification: H01L

Abstract:
1. A method for forming a metal contact in a semiconductor device, comprising the steps of: forming a bottom wire connected with a metal wire on a substrate; forming an inter-layer insulation layer on an entire surface of a substrate substructure including the bottom wire and the substrate; forming a metal contact hard mask layer formed of an aluminum layer on the inter-layer insulation layer; forming a photosensitive layer pattern defining a contact hole on the metal contact hard mask layer; etching the metal contact hard mask layer by using the photosensitive layer pattern as an etch barrier layer; etching the inter-layer insulation layer with use of the etched metal contact hard mask layer as an etch barrier layer to thereby form the contact hole; and forming a metal contact connected to the substrate within the contact hole, wherein the aluminum layer is deposited in two steps of depositing a seed aluminum layer under a high power and then depositing a second aluminum layer under a low power accompanied with a thermal process.