Projected Capacitive Touch Panel
Capacitive touch panel works through body's current induction. When finger is on or close to touch panel surface, due to body electric field, the user and touch panel surface forms one coupling capacitance.
For high frequency current, capacitance is direct conductor, then fingers suck a small current from the contact point, through amplifying and accurately calculating this current signal,
Finally the controller works out the touch point position
Projected Capacitive Technology:
■ Projected Capacitive Technology permits more accurate and flexible operation by etching the conductive layer on the touch screen.
■ Projected Capacitive Touch Screen uses multiple layers of glass or film with optical bonding in assembly process.
■ Cover lens is usually made by tempered glass which can stand against shock and impact.
■ Projected Capacitive touch panels are embedded with high performance IC and users can enlarge, shrink, rotate, flip and drag pages easily due to the multi-touch gesture support (multi-point touch screen).