Patent ID: 8130483

Claim:
A capacitor structure, comprising: a pair of first and second plate electrodes stacked along a first direction on a substrate in which at least an inner wiring is arranged; a first insulation layer at least partially interposed between the first and the second electrodes along the first direction, so that the first and the second plate electrodes are electrically insulated from each other; a second insulation layer on the substrate such that the first electrode, the first insulation layer, and the second electrode are covered with the second insulation layer; a first plug extending through the second insulation layer along the first direction, the first plug making electrical contact with the second electrode; a second plug extending through the first and the second insulation layers along the first direction, the second plug making electrical contact with the first electrode; a third insulation layer on the second insulation layer; a comb-shaped third electrode making contact with the first plug in the third insulation layer, the third electrode having a first common wiring extending in a second direction and a plurality of first branch wirings extending in a third direction, the first, second, and third directions all being orthogonal to one another, the plurality of first branch wirings being commonly connected to the first common wiring; and a comb-shaped fourth electrode making contact with the second plug in the third insulation layer and facing the third comb-shaped electrode, the fourth electrode having a second common wiring extending in the second direction and a plurality of second branch wirings extending in the third direction, the plurality of second branch wirings being commonly connected to the second common wiring, the first and the second branch wirings being alternately arranged and spaced apart in the third direction.