Led luminescence apparatus and method of driving the same
AssigneeSeoul Semiconductor Co., Ltd.
InventorsYoung Do JONG, Hyun Gu KANG, Hye Man JUNG, Kang Nyung LEE
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Abstract
A light-emitting diode (LED) driving circuit configured to drive LED units includes a rectification circuit unit to receive an alternating current (AC) power voltage and rectify the AC power voltage to output a unidirectional ripple voltage, a pulse-width modulation (PWM) signal generation unit to generate PWM decision signals. The PWM signal generation unit is configured to sequentially drive the LEDs according to the PWM decision signals.
Claims17
A light-emitting diode (LED) driving circuit configured to drive LED units, the driving circuit comprising:
- a rectification circuit unit to receive an alternating current (AC) power voltage and rectify the AC power voltage to output a unidirectional ripple voltage;
- and
- a pulse-width modulation (PWM) signal generation unit to generate PWM decision signals,
- wherein the PWM signal generation unit is configured to sequentially drive the LEDs according to the PWM decision signals.
A light-emitting diode (LED) driving circuit, comprising:
- a rectifier to receive an alternating current (AC) voltage and rectify the AC voltage to generate a rectified voltage;
- and
- a pulse-width modulation (PWM) signal generation unit to generate a first PWM decision signal and a second PWM signal,
- wherein the PWM signal generation unit is configured to provide the first PWM decision signal and the second PWM decision signal to LED units, and the PWM signal generation unit is configured to sequentially drive the LED units according to the first and the second PWM decision signals.
Dependencies are inferred from the claim text.