Patent ID: 8766347

Claim:
A capacitor, comprising: a container-shaped node structure over a semiconductor substrate; the storage node structure having a top, a bottom, and a height from the bottom to the top; the storage node structure comprising a base at said bottom; the storage node structure comprising, along a cross-section, a pair of sidewalls extending upwardly from said base to said top; the individual sidewalls comprising at least two distinct segments; a lower segment being wider and an upper segment being narrower; capacitor dielectric material along the upper and lower segments of the sidewalls of the container-shaped storage node; capacitor electrode material over the capacitor dielectric material and capacitively coupled to the container-shaped storage node through the capacitor dielectric material; wherein the sidewalls of the container-shaped storage node structure comprise exterior surfaces along an outside of the container shape, and comprise interior surfaces along an interior of the container shape; the exterior and interior surfaces both extending along both of the upper and lower segments of the sidewalls; wherein the dielectric material is along the interior and exterior surfaces of the sidewalls, and wherein the dielectric material along both of the interior and exterior surfaces extends along both of upper and lower segments of the sidewalls; wherein upper lattice material is directly against top exterior surfaces of the sidewalls, and wherein the dielectric material along the exterior surfaces of the sidewalls is beneath the upper lattice material; and wherein the top of the storage node structure has an uppermost surface which is coplanar with an uppermost surface of the lattice material.