Patent ID: 8030852

Claim:
A backlight device, comprising: a substrate; a lamp disposed on a first side of the substrate; a lamp holder, disposed on the first side of the substrate, for fixing the lamp; an inverter module for providing at least a first driving voltage to drive the lamp; and a balance circuit board coupled to the lamp, wherein the inverter module is disposed at an inverter circuit board, and the balance circuit board is disposed to separate from the inverter circuit board, wherein the balance circuit board comprises at least one of a resistor, a capacitor, an inductor, a switch and the backlight device further comprising a reflector, disposed in parallel to the substrate on a bottom of the lamp holder, for reflecting lights emitted by the lamp; and a diffuser, disposed in parallel to the reflector on a top of the lamp holder, for diffusing lights emitted by the lamp to form a surface light source.