Patent ID: 7449383

Claim:
A method of manufacturing a capacitor, comprising: forming a mold layer having an opening exposing a contact plug on a substrate; forming a conductive layer on a sidewall of the opening and on an upper face of the mold layer; forming a spin-on layer on the conductive layer so as to fill the opening; providing ozone gas onto the spin-on layer so as to transform the spin-on layer into an insulating layer, the insulating layer including an upper insulating film having a lower face that is lower than the upper face of the mold layer and a lower insulating film below the upper insulating film; removing the upper insulating film to expose a top portion of the conductive layer; forming a cylindrical lower electrode by removing the exposed top portion of the conductive layer; removing the mold layer and the lower insulating film; forming a dielectric layer on the substrate and on an outer sidewall, an inner sidewall, and a bottom face of the cylindrical lower electrode; and forming an upper electrode on the dielectric layer.