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LIQUID CRYSTAL DISPLAY TO WHICH INFRARED RAYS SOURCE IS APPLIED AND MULTI-TOUCH SYSTEM USING THE SAME

  • US 20090167656A1
  • Filed: 12/23/2008
  • Published: 07/02/2009
  • Est. Priority Date: 12/31/2007
  • Status: Active Grant
First Claim
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1. A liquid crystal display (LCD) to which infrared rays (IR) light sources are applied, comprising:

  • a back light in which a plurality of lamp light sources and a plurality of IR light sources are repeatedly arranged in column and row directions;

    a diffusion plate and a plurality of optical sheets arranged on the back light; and

    an LCD panel provided on the back light to display an image using light incident from the back light.

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