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Home / Courses / Touch Screen Gestures / Types of Touch Screen / Infrared Touch Screen

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Design Course

Touch Screen Gestures

Touch Screen Technologies
by
Prof. Keyur Sorathia
DoD, IIT Guwahati
Infrared Touch Screen
 
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An array of infrared Light Emitting Diodes (LEDs) and photo detector pairs are placed around the edges of the panel. The LEDs are placed both horizontally and vertically creating a grid of infrared light beams. When a finger or any object touches the screen, the grids of LED beams are obstructed, helping to find out the X and Y positioning of the object approaching the touch screen.

Infrared touch screen can detect any object (e.g. finger, stylus, glove etc.) approaching the touch screen, which makes it a desirable technology to use. Additionally, it can be scaled to any size without losing the resolution. Light transmission is also considered better than resistive touch screens.


The figure above showcases the front view of infrared touch screen.


Figure above showcases the touch event caused in infrared touch screen

  • Introduction
  • Types of Touch Screen
    • Infrared Touch Screen
    • Resistive Touch Screen
    • Capacitive Touch Screen
    • Surface Acoustic Wave
    • Wii Based Touch Screen
    • Comparison of all Touch Screens
  • Finger and Touch Targets
  • Touch Targets
  • Gestures of Touch Screen
  • Touch Feedback
  • Design Consideration
  • Downloads
  • Contact Details
  • Credits

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