Patent ID: 8488299

Claim:
A capacitor structure, comprising: a first electrode layer having a peak-valley like structure, the peak-valley like structure of the first electrode layer having at least one first convex portion and at least one first concave portion; a first dielectric layer disposed over the first electrode layer, wherein the first dielectric layer has a uniform thickness between 0.1 μm and 10 μm; a second electrode layer having a peak-valley like structure disposed over the first dielectric layer, the peak-valley like structure of the second electrode layer having at least one second convex portion and at least one second concave portion, the at least one second concave portion inserted in the at least one first concave portion, the at least one first convex portion inserted in the at least one second convex portion; a second dielectric layer disposed over the second electrode layer; and a third electrode layer disposed over the second dielectric layer, wherein at least two gaps are formed between the peak-valley structure of the second electrode layer and the third electrode layer, thereby providing parallel combinations of at least two different capacitances.