Patent ID: 6885542

Claim:
A capacitor structure comprising: two gate stacks situated upon a semiconductor substrate; a storage node layer; a cell dielectric layer situated on the storage node layer; a cell plate layer situated on the cell dielectric layer, wherein each of the storage node layer, cell dielectric layer, and cell plate layer have a substantially concave shape and are situated above the two gate stacks; a concave shaped storage container cell region having an opening thereto and being defined by a concave surface of the storage node layer; and an insulation layer situated upon the cell plate layer and within the concave shaped storage container cell region, wherein the insulation layer makes contact with the cell plate layer outside of the concave shaped storage container cell region and extends both below and above the storage node layer, the cell dielectric layer, and the cell plate layer; wherein the cell dielectric layer makes a conforming contact with the storage node layer, and the cell plate layer makes a conforming contact with the cell dielectric layer.