There are two different types of Capacitive Touch Panels available on the market: Surface Capacitance and Projected Capacitance. The illustration on this slide is the surface capacitance panel, which is only one side of the insulator coated with the conductive material with a small voltage amount applied to the layer. This will result in a uniform electrostatic field. As a human or other conductor interacts with the uncoated surface, a capacitor is formed. This type of capacitance is moderately durable but has limited resolution. Surface capacitance is most often used in simple applications, due to it being susceptible to false signals and needs calibration during manufacturing.