Patent ID: 6406967
Filing Date: 2002-06-18
Classification: H01L

Abstract:
A method for manufacturing cylindrical storage electrodes of a semiconductor device, comprising:(a) forming contact pads connected to active regions of a semiconductor substrate in a first insulating layer on the semiconductor substrate; (b) forming an etching stop layer on the contact pads; (c) forming a second insulating layer on the etching stop layer; (d) selectively removing the second insulating layer to expose portions of the surface of the etching stop layer; (e) wet-etching the exposed portions of the etching stop layer disposed on the contact pads to expose the surface of the contact pads using a predetermined etchant; (f) forming a conductive layer for a storage electrode on the second insulating layer and the surface of the exposed contact pads, the conductive layer comprising an upper portion and a lower portion; and (g) removing the upper portion of the conductive layer, the second insulating layer and the etching stop layer to form cylindrical storage electrodes being electrically isolated from each other.