Patent ID: 6884729
Filing Date: 2005-04-26
Classification: B81C

Abstract:
1. A method for adding a feature to a substrate comprising the steps of: a. providing a substrate having a base material layer and a first material layer applied on top of the base material layer wherein the first material layer has a thickness of at least about 2 microns wherein the first material layer has an exposed surface; b. forming a feature in the first material layer; c. depositing a second material layer onto the surface of the first material layer in an amount that is sufficient to fill the first material layer feature; d. depositing a photosensitive etch resistant material layer onto the exposed surface of the second material layer; e. placing a mask over the photosensitive etch resistant material layer deposited onto the exposed surface of the second material layer to form exposed portions of the photosensitive etch resistant material layer deposited onto the exposed surface of the second material layer and unexposed portions of the photosensitive etch resistant material layer deposited onto the exposed surface of the second material layer; f. imaging the exposed portions of the photosensitive etch resistant material layer deposited onto the exposed surface of the second material layer to form activated portions and non-activated portions of the photosensitive etch resistant material layer; and g. planarizing the surface of the substrate by chemical mechanical polishing.