Patent ID: 8378451

Claim:
A device comprising: a substrate; a first MIM capacitor disposed over the substrate; and a second MiM capacitor disposed over the first MiM capacitor, the first MiM capacitor and the second MiM capacitor being electrically connected in parallel; wherein the first MiM capacitor comprises: a first electrically conductive layer; a first insulating layer disposed over the first electrically conductive layer; a second electrically conductive layer; a second insulating layer disposed over the second electrically conductive layer; and a first wiring layer disposed over the second insulating layer and electrically connected to the second electrically conductive layer by one or more via connections through the second insulating layer; wherein the second MiM capacitor comprises: a third electrically conductive layer; a third insulating layer disposed over the third electrically conductive layer; a fourth electrically conductive layer; a fourth insulating layer disposed over the fourth electrically conductive layer; and a second wiring layer disposed over the fourth insulating layer and electrically connected to the fourth electrically conductive layer by one or more via connections through the fourth insulating layer; wherein the fourth electrically conductive layer is substantially co-extensive with the second electrically conductive layer, and is disposed substantially directly over the second electrically conductive layer; wherein slots are provided in the first wiring layer; wherein the device comprises first vias extending from the first electrically conductive layer to the third electrically conductive layer, the first vias passing through a slot in the first wiring layer; wherein slots are provided in the electrically conductive layer, wherein the device comprises second vias extending from the first wiring layer to the second wiring layer, the second vias passing through a slot in the third electrically conductive layer; and wherein slots are provided in the second wiring layer.