Patent ID: 6200845
Filing Date: 2001-03-13
Classification: H01L

Abstract:
A method of forming at least a bottom electrode of a capacitor in a semiconductor device, said method comprising the steps:forming a first insulation film on a multilayer structure over a semiconductor substrate;forming at least a contact hole which penetrates through said first insulation film and said multilayer structure to reach a surface of the semiconductor substrate;selectively removing said first insulation film to form mask patterns on said multilayer structure;forming a single conductive film which extends within said at least one contact hole and over said multilayer structure as well as cover said mask patterns, said single conductive film entirely filling each said contact hole;forming a second insulation film on said single conductive film;partially removing said second insulation film and said single conductive film over said mask patterns so that tops of said mark patterns are shown; andremoving remaining parts of said second insulation film and said mask patterns to form at least a bottom electrode comprising a single conductive layer.