How does the touch screen technology work?

Discussion in 'iPod touch' started by RumMunkey, Sep 25, 2007.

  1. RumMunkey macrumors 6502a

    RumMunkey

    Joined:
    Nov 3, 2006
    Location:
    Canada
    #1
    It doesn't appear to be the same as touch screens you see on ATMS or on POS systems at the grocery store.

    It's a hard glass, not a soft clear overlay like the touch screen of my Sony Commander remote. I can't see any sort of sensors or receptors when I look closely at the screen.

    I think it has the potential to be revolutionary. I can see many future applications for this. From everything to in-car entertainment systems to laptops to remote controls, to video game systems, to just about anything else you can imagine.

    What exactly are the mechanics behind the touch screen?
     
  2. Blue Velvet Moderator emeritus

    Joined:
    Jul 4, 2004
    #3
    Found this on a site about Jeff Han's work. It may be relevant for Apple's touchscreen technology...

    Main page
    http://cs.nyu.edu/~jhan/
     
  3. Ryon macrumors member

    Joined:
    Apr 15, 2005
    #4
  4. jeremy.king macrumors 603

    jeremy.king

    Joined:
    Jul 23, 2002
    Location:
    Fuquay Varina, NC
    #5
    Magic
     
  5. madmaxmedia macrumors 68030

    Joined:
    Dec 17, 2003
    Location:
    Los Angeles, CA
    #6
    It doesn't rely on pressure, it has a capacitance sensor like the trackpad on a notebook computer, or the clickwheel on an iPod (the wheel, not the clicky buttons.)

    http://www.eetimes.com/showArticle.jhtml?articleID=174909778
    http://en.wikipedia.org/wiki/Touchpad

    That's why you can't use a stylus with the Touch, like you do with PDA's and some other phones. But of course there are advantages as well (I much prefer the Touch's glass screen, vs. a Palm PDA type screen surface.)

    The capacitance sensor itself, relies on magic.
     

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