Patent ID: 6777284
Filing Date: 2004-08-17
Classification: B81C,H01L

Abstract:
A method of manufacturing an electronic device provided with metal regions, that are mutually separated by air spaces, which method comprises the steps of:forming a patterned first isolating layer on a substrate surface; depositing a metal seed layer so that it covers the first isolating layer and exposed areas of the substrate surface; and forming metal regions upon the exposed seed layer; characterised in that a second patterned isolating layer is formed on the seed layer according to a second pattern, a perpendicular projection of which on the substrate surface has an overlap with the first isolating layer; the metal regions are formed such that they fill the patterns defined by the first and the second isolating layers, and the second isolating layer and the seed layer are removed after forming of the metal regions, therewith obtaining the air spaces, the seed layer being removed in so far as it is not covered by the metal regions.