for Iphone 3GS Digitizer

for 3GS Iphone Touch Screen DigitizerProduct Description for 3Gs Iphone Touch Screen digitizer 1.100% Brand New and never used,please bid with confidence. 2. It is used to repair replace your wrong,damaged,cracked,not recognised touch digitizer panel. 3. Each screen is tested before shipping and 100% working. 4. It is fits for all the models listed below . 5. You will get 1 pry tool & a piece 0f adesive for free(OPTIONAL). 6. Delivery in 48 hours after confirm payment. 7. Large quantity in stock. 8. If there is any question, please feel free to contact our service department. Our pleasure to serve you. Compatible with:for 3Gs Iphone Touch Screen digitizer Package include: 1 X touch screens digitizer for Iphone 3Gs 1X ADHESIVE (FREE,OPTIONAL) 5 toolS ($0.7 OPTIONAL) Projected capacitance(Technology-Link) Projected Capacitive Touch (PCT) technology is a capacitive technology which permits more accurate and flexible operation, by etching the conductive layer. An XY array is formed either by etching a single layer to form a grid pattern of electrodes, or by etching two separate, perpendicular layers of conductive material with parallel lines or tracks to form the grid (comparable to the pixel grid found in many LCD displays). Applying voltage to the array creates a grid of capacitors. Bringing a finger or conductive stylus close to the surface of the sensor changes the local electrostatic field. The capacitance change at every individual point on the grid can be measured to accurately determine the touch location. The use of a grid permits a higher resolution than resistive technology and also allows multi-touch operation. The greater resolution of PCT allows operation without direct contact, such that the conducting layers can be coated with further protective insulating layers, and operate even under screen protectors, or behind weather and vandal-proof glass. PCT is used in a wide range of applications including point of sale systems, smartphones, and public information kiosks. Visual Planet's ViP Interactive Foil is an example of a kiosk PCT product, where a gloved hand can register a touch on a sensor surface through a glass window.