Patent ID: 7180192
Filing Date: 2007-02-20
Classification: H01L

Abstract:
1. A semiconductor device comprising: an insulating film which is provided in at least one layer above a substrate and whose relative dielectric constant is 3.4 or less; at least one conductive layer provided in the insulating film; at least one conductive plug which is formed in the insulating film and which is electrically connected to the at least one conductive layer to form a conduction path; at least one reinforcing material which is provided under the at least one conductive layer and whose Young's modulus is 30 GPa or more; at least one first reinforcing plug which is connected to the at least one conductive layer, which is formed in contact with the at least one reinforcing material, and which is arranged within 5 μm from the at least one conductive plug, an interval between plugs including the respective at least one first reinforcing plug and the at least one conductive plug being set to 1 μm or less; a reinforcing metal layer which is provided in the insulating film in an area other than that where the at least one conductive layer is formed, and which is electrically disconnected from the at least one conductive layer and the at least one conductive plug; and a second reinforcing plug which is connected to the under side of the reinforcing metal layer and which is formed in contact with the at least one reinforcing material.