Patent ID: 7723996

Claim:
A backlight assembly comprising: plural pairs of discharge tubes; a pair of inverters converting DC voltages from an exterior into AC voltages to transmit the AC voltages to the plural pairs of discharge tubes; plural pairs of balance transformers, each pair being connected to an output terminal of a corresponding inverter of the inverters; and a fault detection device that detects a fault based on values of current applied to the balance transformers, wherein each pair of the balance transformers comprises: a pair of primary coils each being connected between the output terminal of the corresponding inverter and a corresponding discharge tube; a pair of secondary coils aligned corresponding to the primary coils and connected to each other in series; and a pair of third coils aligned corresponding to the primary coils and connected to each other in series, a first end of the connected third coils being connected to ground, and a second end of the connected third coils being connected to the fault detection device.