Touch Screen Technologies
Capacitive
IR (Infrared)
Capacitive
Capacitive touchscreens work by using the conductive properties of the human body to detect touch. They consist of a transparent conductive layer coated on a glass or other insulating substrate. When a finger or other conductive object approaches the screen, it disrupts the electrostatic field, causing a change in capacitance which then determines the touch location.
Resistive
IR (Infrared)
Capacitive
Resistive touch panels work by layering two electrically conductive surfaces separated by a small gap. When pressure is applied, the surfaces come into contact with each other completing a circuit and allowing the device to detect the touch points location. The panel then measures the change in resistance to determine the "x" and "y" coordinates of the registered touch.
IR (Infrared)
IR (Infrared)
IR (Infrared)
IR touch panels work by using a grid of infrared light beams and sensors around the edges of the screen. When a finger touches the screen, it interrupts the infrared beams. The sensors detect the interruption, and the system calculates the touch coordinates based on which beams are blocked. This information is sent to the device's processor to register the touch input.