| 摘要 |
Provided are an apparatus and method for controlling an operation of an LED in a light unit. The apparatus includes: a micom for sequentially outputting red, green and blue signals delayed by a predetermined interval through n (n>1) number of channels for each color; a plurality of light emitting diode (LED) drivers for outputting PWM dimming pulses according to the red, green and blue signals inputted through the n number of the channels; a plurality of switching elements for outputting driving currents according to the PWM dimming pulses; and n number of light subunits including a plurality of red, green and blue LED chips sequentially driven by the driving currents outputted from the switching elements.
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