Capacitive Touch Screen
A capacitive touch screen is a glass panel with a special coating of Indium Tin Oxide (ITO) which acts as a conductor. A low level voltage is applied to this layer, resulting in an electrostatic charge. Because the human body acts as an electrical conductor, touching the glass results in a distortion of the electrostatic charge.
Sensors located at each corner of the glass panel measure the frequency of this electrostatic distortion and calculate the coordinate of the user’s finger on the screen.
When used with LCD displays and panel PCs, Capacitive technology offers drift-free and stable performance that is not susceptible to deterioration over time. In addition, capacitive technology is impervious to grease, dirt and water making it ideal for frequent use in point of sale, automation, process control and military applications.
Unaffected by extreme temperatures
Excellent calibration stability
Durable glass surface
Markets and applications
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