Disclosed are a backlight unit and a liquid crystal display device having the same, capable of reducing tube current variation between light sources. The backlight unit includes a plurality of lamps provided at both ends thereof with electrodes and having a tubular shape, a plurality of lamp holders for fixing the both ends of the lamps, at least one substrate on which the lamp holders are mounted, and at least two conductors formed on the substrate in opposition to each other to generate capacitance for uniformly maintaining tube current of the lamps.