LED drive system and backlight module with same

LED drive system and backlight module with same

  • CN 101,106,858 A
  • Filed: 08/22/2007
  • Published: 01/16/2008
  • Est. Priority Date: 08/22/2007
  • Status: Active Application
First Claim
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1. a LED drive system is arranged on the circuit board with at least one light-emitting diode, it is characterized in that this LED drive system comprises:

  • One temperature detecting module is connected in this light-emitting diode and comprises a thermoelectric converting unit, and this thermoelectricity converting unit produces a variations in temperature in order to the heat energy of accepting this light-emitting diode work and producing, and produces the voltage of a correspondence according to the temperature that is changed;

    One hysteresis voltage module is electrically connected at this temperature detecting module, produces a hysteresis voltage in order to receive this voltage;

    AndOne electric current limiting module is electrically connected at this hysteresis voltage module and this light-emitting diode, drives this light-emitting diode in order to receive this hysteresis voltage and to produce a drive current.

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