Touch Screens

What is a touch screen

A touchscreen is an device normally layered on the top of an electronic visual display of an information processing system. A user can give input or control the information processing system through simple or multi-touch gestures by touching the screen with a special stylus/pen and-or one or more fingers.

Different types of touch screens

Resistive touch


In electrical engineering, resistive touch screens are touch-sensitive computer displays composed of two flexible sheets coated with a resistive material and separated by an air gap or microdots. There are two different types of metallic layers.


Capacitive Touchscreen

Capacitive touchscreen displays rely on the electrical properties of the human body to detect when and where on a display the user touches. Because of this, capacitive displays can be controlled with very light touches of a finger and generally cannot be used with a mechanical stylus or a gloved hand.


SAW (Surface Acoustic Wave) Touch Screen