A capacitive touch panel (CTP) is a type of touch screen that detects touch by sensing changes in electrostatic capacitance. It consists of transparent layers of electrodes forming a grid of sensors; when a finger or conductive stylus touches the screen, it alters the local electric charge, which the controller detects as a touch point.
Capacitive panels can accurately detect multiple simultaneous touches (multi-touch) and support complex gestures. They are widely used in smartphones, tablets, industrial HMIs, and kiosks due to their durability (scratch-resistant) and excellent optical clarity. Industrial capacitive screens can even sense touches through gloves or with moisture present, making them versatile in harsh environments.
