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OPTICAL TOUCH PANEL AND TOUCH DISPLAY PANEL AND TOUCH INPUT METHOD THEREOF

  • US 20110298753A1
  • Filed: 02/21/2011
  • Published: 12/08/2011
  • Est. Priority Date: 06/04/2010
  • Status: Active Grant
First Claim
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1. An optical touch panel, comprising:

  • a substrate, having a surface;

    a single planar light generator, disposed outside the surface of the substrate for generating a planar light;

    wherein an illuminating range of the planar light covers a range of the surface of the substrate;

    at least a retro reflector device, disposed on at least a side of the substrate for reflecting the planar light; and

    a single photo sensor array, disposed outside the surface of the substrate for sensing the reflected planar light and generating reflected light distribution information.

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