Patent ID: 6583006
Filing Date: 2003-06-24
Classification: H01L

Abstract:
A method of forming an array of DRAM cells having dual-sided container capacitors, the method comprising the steps of:forming a plurality of container forms in a layer of dielectric material, the layer of dielectric material having an upper surface; disposing a layer of rough polysilicon within the container forms and over the upper surface of the layer of dielectric material; disposing a layer of photoresist over the first layer of rough polysilicon; removing the layer of photoresist and the first layer of polysilicon from the upper surface of the layer of dielectric material using chemical mechanical planarization; removing the layer of photoresist remaining in the plurality of container forms; wet etching the layer of dielectric material to recess the dielectric below the upper surface of the container forms after removing the layer of photoresist in the container forms; disposing a nitride film over the layer of rough polysilicon and over the upper surface of the substrate; and disposing a conductive layer over the nitride film.