CALL CHARGES

Electrons in your finger are attracted to the positive electrodes in the sensing layer (). That creates a charge imbalance which brings more electrons to the transmitting layer (). The electrodes measure the increase in charge to identify the touch’s location. When the screen is pressed, the device’s processor needs to recognise intentional pressure from surrounding electrical noise and the hand holding it. The processor derives an X,Y coordinate based on the location of the pressure. It also calculates the downward force Z – the difference between a tap and a swipe – and reads the outline of the touch (W) to decide the kind of object (finger, stylus or other) and to determine the intended target. This data is combined with information about what your screen’s current display to calculate whether the touch was deliberate and, if so, its intended purpose.