| 摘要 |
A display device and a control method thereof are provided to enhance display characteristics and image quality of a display device by reducing a current ripple component in a driving current. A display device includes an optical source, plural voltage sources(30,40,50,60), and a controller(100). The voltage sources supply predetermined source voltages to the optical source. The controller controls the voltage sources, so that currents of the respective source voltages, which are supplied from the voltage sources, have predetermined phase differences from each other. The voltage sources include switching units(33,43,53,63,35,45,55,65) and PWM(Pulse Width Modulation) generators(31,41,51,61). The switching unit supplies the current from a predetermined constant current source to the optical source. The PWM generator generates a PWM signal for turning on/off the switching unit.
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