Patent ID: 8252659
Filing Date: 2012-08-28
Classification: H01L

Abstract:
1. A method for producing a semiconductor device, comprising: providing a semiconductor substrate, the semiconductor comprising one or more active components on a surface of the semiconductor substrate; depositing a top layer of dielectric material on the surface of the substrate or on a dielectric layer present on the surface of the semiconductor substrate; depositing a common chemical mechanical polishing stopping layer on the top layer; etching one or more first openings through at least the top layer, filling the one or more first openings with a first conductive material, and performing a first chemical mechanical polishing to form first conductive structures, wherein the common chemical mechanical polishing stopping layer stops the first chemical mechanical polishing; etching one or more second openings through at least the top layer, filling the one or more second openings with a second conductive material, and performing a second chemical mechanical polishing to form second conductive structures, wherein the common chemical mechanical polishing stopping layer stops the second chemical mechanical polishing.