Hybrid backlight driving apparatus for liquid crystal display

A display device comprising:

• a display panel;
• a hybrid backlight assembly for emitting light toward the display panel, the hybrid backlight assembly including a plurality of lamps and a plurality of light emitting diodes;
• a lamp inverter for converting a first DC voltage into a lamp driving voltage and supplying the lamp driving voltage to the plurality of lamps;
• and
• a light emitting diode driver for converting the first DC voltage into a light emitting diode driving voltage and supplying the light emitting diode driving voltage to the plurality of light emitting diodes,
• wherein the lamp inverter includes a lamp driving controller for controlling driving of the plurality of lamps in response to a burst dimming signal for the plurality of lamps, a first DC/AC switching device and a second DC/AC switching device for respectively converting the first DC voltage under control of the lamp driving controller to a first AC voltage and a second AC voltage, a first transformer for boosting the first AC voltage and supplying the boosted first AC voltage to a first terminal of each of the plurality of lamps and a second transformer for boosting the second AC voltage and supplying the boosted second AC voltage to a second terminal of each of the plurality of lamps, the boosted second AC voltage having a phase opposite to the boosted first AC voltage.

A method of driving a hybrid backlight assembly of a display device, the hybrid backlight assembly having a plurality of lamps and a plurality of light emitting diodes, the method comprising:

• converting a first DC voltage into a lamp driving voltage and supplying the lamp driving voltage to the plurality of lamps;
• and
• converting the first DC voltage into a light emitting diode driving voltage and supplying light emitting diode driving voltage to the plurality of light emitting diodes,
• wherein the step of converting the first DC voltage into the lamp driving voltage includes converting the first DC voltage to an AC voltage, boosting the first AC voltage to be a first boosted AC voltage and supplying the first boosted AC voltage to a first terminal of each of the plurality of lamps and boosting the first AC voltage to be a second boosted AC voltage and supplying the second boosted AC voltage to a second terminal of each of the plurality of lamps, the second boosted AC voltage having a phase opposite to the first boosted AC voltage.