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LIGHT EMITTING DIODE DRIVING MODULE

  • US 20090261743A1
  • Filed: 06/27/2008
  • Published: 10/22/2009
  • Est. Priority Date: 04/18/2008
  • Status: Active Grant
First Claim
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1. A light emitting diode driving module, suitable to drive a plurality of light emitting diode strings in parallel connection, wherein each of the light emitting diode strings has a first terminal and a second terminal;

  • the light emitting diode driving module comprising;

    a voltage converting apparatus, for producing a driving voltage at the first terminal of each the light emitting diode string according to a conduction voltage;

    a conduction voltage detecting apparatus, coupled to the second terminal of each the light emitting diode string for detecting the conducting states of the light emitting diode strings and producing the conduction voltage and a plurality of enabling signals;

    a reference voltage generating apparatus, for generating a first reference voltage according to the enabling signals; and

    a current-adjusting apparatus, for producing a plurality of driving currents respectively flowing through each the light emitting diode string.

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