Patent ID: 7906832
Filing Date: 2011-03-15
Classification: H01L

Abstract:
1. A semiconductor device comprising a plurality of capacitance elements that are stacked, wherein each of the capacitance elements has an MIM (Metal-Insulator-Metal) structure obtained by holding a capacitance film made of an insulating material between first and second electrodes made of a metallic material, a stack of the plurality of capacitance elements includes at least two said first electrodes, at least one said second electrode, and at least two said capacitance films, said at least two first electrodes are formed at a same position in plan view, a first via connected in common to the first electrodes penetrates at least one of the first electrodes, the first and second electrodes are so arranged as to partially overlap each other in plan view, the second electrode deviates in position from the first electrodes in plan view, the first via extends to penetrate the capacitance film of a lowermost capacitance element among the plurality of capacitance elements and reach a lowermost first electrode among said at least two first electrodes, and a second via connected to the second electrode is arranged at a position deviated from the first electrodes in plan view, and penetrates the capacitance film of the lowermost capacitance element.