BACKLIGHT UNIT AND DISPLAY DEVICE HAVING THE SAME

摘要

A backlight unit is formed in a display device and includes a power converter which generates a light source driving power voltage in response to a voltage control signal, a plurality of light emitting diode strings which receive the light source driving power voltage through each one end thereof, and a controller which is connected to the other end of each light emitting string and generates a plurality of current control signals for controlling each current of the light emitting diode strings and a voltage control signal. The controller generates the voltage control signal in response to the current control signal which is supplied to the light emitting diode string with the lowest forward driving voltage among the light emitting diode strings.