Patent ID: 6888249
Filing Date: 2005-05-03
Classification: H01L

Abstract:
1. A semiconductor device having one or more air gaps therein produced in accordance with a method comprising the steps of: (i) using a sacrificial material to occupy a closed interior volume in a semiconductor structure; (ii) causing the sacrificial material to decompose into one or more gaseous decomposition products; and (iii) removing at least one of the one or more gaseous decomposition products by passage through at least one solid layer contiguous to the interior volume, wherein the decomposition of the sacrificial material leaves an air gap at the closed interior volume previously occupied thereby, the sacrificial material comprises a polymer composition selected from one or more polycarbonate polymers, polyester polymers, polyether polymers, methacrylate polymers, acrylate polymers, or mixtures thereof, and the at least one solid layer is free of any closed holes contiguous with the closed interior volume.