Resistive Touchscreen

The resistive TFT touchscreen is constructed of a hard-coated polyester top sheet that is overlaid on a conductive-coated glass layer. Voltage is applied to the top sheet. As a user touches the screen, the top sheet compresses and comes into contact with the glass layer, causing current to flow to the four corners in proportion to the distance from the edge. Ths controller then calculates the position of the finger, based on the current flow. Because the controller derives both the "X" and "Y" touch coordinates from the stable glass layer, the accuracy and operation of the touchscreen is unaffected by any damage that may have occurred to the top sheet.

Using the Resistive Touchscreen

The resistive touchscreen functions as traditional single-touch screens.