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1. Touch Screen Sensor Quanling zheng

2. How Does a Touchscreen Work? A basic touchscreen has three main components: 1 Touch sensor; 2 Controller; 3 Software driver. The touchscreen is an input device, so it needs to be combined with a display and a PC or other device to make a complete touch input system.

8. 4-wire resistive touchscreen

10. 8-wire resistive touchscreen

18. Infrared touchscreen

21. SAW touchscreen

23. Can use any pointing device Can use any pointing device finger, gloved hand or soft tip Human touch Touch method up to 19" 10.4"-60" 10.4"-30" 8.4"-21" Display size Polyester top sheet, glass substrate with ITO coating Any substrate Glass with ITO coating Glass with ITO coating Sensor substrate Unaffected by Surface contaminants. Polyester top sheet is easily scratched Potential for False activation or dead zones From Surface Contaminants Adversely affected by moisture or Surface contaminants Resistant to moisture and other surface contaminants Surface Contaminants /durability good Limited due to spacing of IR sensors Good Good Resolution 75%~85% Very good >92% Very good >92% Very good >92% Transparence Resistive Infrared SAW Capacitive Technology