Patent ID: 6580112
Filing Date: 2003-06-17
Classification: H01L

Abstract:
An electronic device having an open can-type stacked capacitor on a substantially uneven surface, comprising:a base layer overlying a substrate; a first elongated structure and a second elongated structure disposed on the base layer spaced apart by a trough; a first electrode comprising a base disposed in the trough and an annular sidewall extending outwardly from the base layer, wherein the annular sidewall is a hollow cylindrical shape with an open top and an open bottom such that a portion of the annular sidewall is disposed on the first elongated structure and another portion of the annular sidewall is disposed on the second elongated structure, wherein the base connects with the annular sidewall only where the annular sidewall crosses over the trough, thereby leaving a void in the first electrode between the base and the portion of the annular wall that is disposed on the first elongated structure; a dielectric layer disposed outwardly of the first electrode; and a second electrode disposed outwardly of the dielectric layer.