Patent ID: 7091612
Filing Date: 2006-08-15
Classification: H01L

Abstract:
1. A-semiconductor device, comprising: a first insulating layer, the first insulating layer comprising a first dielectric material, having first etch characteristics, and a second dielectric material formed over the first dielectric material, the second dielectric material comprising a different material than the first dielectric material, and having second etch characteristics that are different from said first etch characteristics; a plurality of first apertures, for receiving a conductive material, defined in the first dielectric material, the first apertures comprising a first pattern, and wherein the coefficient of thermal expansion (CTE) of said conductive material is substantially similar to the CTE of said first dielectric material; a plurality of second apertures, for receiving said conductive material, defined in the second dielectric material, the plurality of second apertures comprising a second pattern and contiguous with said plurality of first apertures, the second pattern being different from the first pattern; and a hard mask disposed over the second dieletric material, wherein the hard mask comprises two or more layers.