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MULTI-TOUCH DETECTING APPRATUS AND METHOD FOR LCD DISPLAY APPARATUS

  • US 20110122075A1
  • Filed: 05/25/2010
  • Published: 05/26/2011
  • Est. Priority Date: 11/23/2009
  • Status: Abandoned Application
First Claim
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1. A multi-touch detecting apparatus comprising:

  • a liquid crystal display (LCD) module which comprises an LCD panel and a backlight unit (BLU);

    a plurality of infrared light sources which emits infrared light toward the LCD module;

    an infrared light detecting camera which is disposed proximate a rear surface of the LCD panel and detects infrared light reflected from an object on the LCD panel; and

    a control unit which turns off the BLU when the infrared light detecting camera is turned on.

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