Patent attributes
A three plate MIM capacitor test structure includes a three plate MIM capacitor, a first test wire in a metal layer above/below the three plate MIM, a second test wire below/above the three plate MIM, a third test wire below/above the three plate MIM, a first via connected to the first test wire, a second via connected to a middle plate of the three plate MIM, and a third via connected to the top and bottom plates of the three plate MIM. The test structure may verify the integrity the MIM capacitor by applying a potential to the first test wire, applying ground potential to both the second test wire and the third test wire, and detecting leakage current across the first test wire and the second and third test wires or detecting leakage current across the second test wire and the third test wire.
