Patent ID: 8258630

Claim:
A semiconductor device, comprising: a first layer; a second layer above the first layer; a first multi-layered structure; a second multi-layered structure, the first and second multi-layered structures extending from the first layer to connect to the second layer; a supporter extending from the first layer to connect to the second layer, the supporter being between the first and second multi-layered structures, the supporter being separated from the first and second multi-layered structures by empty space; a first contact plug in the first layer, the first contact plug penetrating through the first layer, the first contact plug being electrically connected to the first multi-layered structure; and a second contact plug in the first layer, the second contact penetrating through the first layer, the second contact plug being electrically connected to the second multi-layered structure, wherein the supporter is electrically insulated from the first and second contact plugs.