Patent ID: 7884706

Claim:
A pressure sensor, comprising: a first conductive layer including first and second conductive plates; a second conductive layer; and a compressible dielectric layer between the first and second conductive layers, wherein one side of the compressible dielectric layer has contiguous contact with both a surface of the first conductive plate and a surface of the second conductive plate, and wherein an opposite side of the compressible dielectric layer has contiguous contact with a surface of the second conductive layer; wherein the first conductive plate and the second conductive layer form a first capacitor; wherein the second conductive plate and the second conductive layer form a second capacitor in series with the first capacitor; wherein the capacitances of the first and second capacitors are measurable via a first lead coupled to the first conductive plate and a second lead coupled to the second conductive plate without a lead coupled to the second conductive layer; and wherein the first and second capacitors are configured to reflect a capacitance according to pressure changes on the compressible dielectric layer.