Liquid crystal display and method for driving the same

The present invention relates to a liquid crystal display device and a driving method thereof. A liquid crystal display device according to an embodiment of the present invention includes a display panel divided into a block of virtual; A backlight unit including a plurality of light sources for irradiating light to the display panel; By analyzing digital image data generated by the blocks of each of the dimming value, the backlight dimming control for adjusting the global dimming value on the basis of the dimming values ​​of the block to increase the brightness of the plurality of light sources within a predetermined power consumption; And a light source driver for outputting a light source drive signal for driving said light source in accordance with the dimming values ​​and the global dimming values ​​of the block.