Patent ID: 7973343

Claim:
A multibit electro-mechanical memory device, comprising: a substrate; a bit line extending in a first direction on the substrate; a first interlayer insulating film on the bit line; first and second lower word lines on the first interlayer insulating film, the first and second lower word lines separated horizontally from each other by a trench, and extending in a second direction that intersects the first direction; a spacer abutting a sidewall of each of the first and second lower word lines; a pad electrode inside a contact hole, wherein the contact hole is formed by removing a portion of the first interlayer insulating film exposed to the spacer on the bit line; first and second cantilever electrodes suspended over first and second lower voids that correspond to upper parts of the first and second lower word lines provided in both sides on the pad electrode, the first and second cantilever electrodes being separated from each other by the trench, and being curved in a third direction that is perpendicular to the first and second direction; a second interlayer insulating film on the pad electrode; first and second trap sites supported by the second interlayer insulating film to have first and second upper voids on the first and second cantilever electrodes; and first and second upper word lines on the first and second trap sites.