Patent ID: 7126575

Claim:
A liquid crystal display device comprising: a backlight assembly including i) a lamp assembly including a plurality of lamps arranged in parallel, each of the lamps having a first electrode formed at a first end and a second electrode formed at a second end, the lamp assembly providing the lamps with a power voltage to turn on or turn off the lamps, ii) a receiving container to receive the lamp assembly, the receiving container having a plurality of openings facing each of the lamps, iii) a lamp driving device including iii-1) a substrate facing the receiving container, iii-2) a lamp driving module, mounted on the substrate, to provide the lamps with the power voltage, iii-3) a plurality of sensors, disposed on the substrate to face the lamps, to detect an operation state of the lamps and to output a plurality of sensing signals, iii-4) a voltage cut-off module, disposed on the substrate, to compare the sensing signals with a predetermined reference signal, the voltage cut-off module providing the lamp driving module with a voltage cut-off signal to prevent the lamp driving module from providing the lamps with the power voltage when at least one of the sensing signals has an amplitude smaller than the reference signal; and a liquid crystal display panel assembly, mounted on the receiving container, to display an image using a light generating from the lamps.