[Display Glossary.zip] EP.40 : Touch Screen Panel
A touchscreen panel (TSP) detects the precise coordinates of a user's touch on a display. Once contact is made, it pinpoints the location and relays the data to the device's control system, triggering the corresponding function. Touch technologies are broadly divided into resistive and capacitive systems. Early smartphones relied on resistive panels, which register input through applied pressure. Today, capacitive touchscreens dominate.