Surface Capacitive Touch Screen

In this basic technology, only one side of the insulator is coated with a conductive layer. A small

voltage is applied to the layer, resulting in a uniform electrostatic field. When a conductor, such as

a human finger, touches the uncoated surface, a capacitor is dynamically formed. The sensor\'s

controller can determine the location of the touch indirectly from the change in the capacitance as

measured from the four corners of the panel.


Advantages

• Can be used to register touch on a sensor surface through a glass window.
• Capacitive withstand contaminants such as grease, dirt, water, running liquid, harsh chemicals and can be NEMA-sealed.
• The life expectancy is over 225 million mechanical touches.
• Capacitive technology transmits around 90% percent of the light from the screen.
• Life span of more than more than 50 million touches in one location.
• Technology with fastest touch response time