a display panel;

a backlight unit including a plurality of blocks for providing light to the display panel, each of the plurality of blocks comprising a plurality of light emitting diodes (LEDs); and

a controller configured to:

obtain backlight control information,

obtain a Pulse Width Modulation (PWM) dimming duty ratio value from the backlight control information,

determine that a backlight control value included in the backlight control information is less than a predetermined value,

increase a voltage applied to a block and reduce a duty ratio during a cycle of one frame, based on the backlight control value being less than the predetermined value,

wherein the backlight control value comprises the PWM dimming duty ratio value, and

wherein the controller is further configured to determine that the backlight control value is less than the predetermined value, based on the PWM dimming duty ratio value being less than a predetermined dimming value,

wherein the controller is further configured to control the block such that current flowing in the block during a half cycle of one frame is different from current flowing in the block during the other half cycle.