كيف تعمل شاشة اللمس

Capacitive touch screen panels consist of an insulator which is usually glass which is coated with a transparent conductor such as indium tin oxide. Because the finger is an electrical conductor when you touch the screen it changes the electrostatic field, this change can be measured and used to determine the position of the touch. This location is then sent to the controller for processing. Because of the way capacitive touch screens work gloves cannot be used with them. The glove acts as an insulator so you can’t change the field. However special gloves and stylus’ can be bought which are conductive to allow for use with the touch screen.

محمد التونسي