Liquid crystal display device

A liquid crystal display device comprising:

• a liquid crystal display panel;
• a light source device having a discharge tube;
• and
• a light source driving circuit driving the discharge tube which performs a blinking operation in synchronism with a frame period with only one ON period thereof in the frame period, said ON period of the blinking period being shorter than the frame period, wherein
• the light source driving circuit includes
• a primary side circuit receiving voltage pulses in synchronism with a burst signal which turns on and off alternately only during ON periods of the blink operation and stays off during OFF periods of the blink operation, and outputting a primary voltage, a frequency of the burst signal during the ON periods of the blink operation being higher than a frequency of the blinking operation, and lower than a frequency of a lamp current and a lamp voltage of the discharge tube,
• a transformer circuit boosting the primary voltage to an alternating voltage, and
• a secondary circuit applying the alternating voltage to the discharge tube,
• wherein the primary side circuit includes
• a first active element comprising a first terminal receiving the voltage pulses via a first resistor, and a second terminal connected to one end of the transformer circuit,
• a second active element comprising a first terminal receiving the voltage pulses via a second resistor, and a second terminal connected to the other end of the transformer circuit, and
• a third active element comprising a first terminal connected to a third terminal of the first active element and a third terminal of the second active element, and a second terminal connected to a reference voltage, and the third active element turning on in a burst-on period of the burst signal and turning off in a burst-off period of the burst signal,
• wherein voltage amplitudes applied to the discharge tube during the burst-off period are greater than voltage amplitudes applied during the burst-on period, and
• wherein current amplitudes applied to the discharge tube during the burst-off period are greater than zero, and smaller than current amplitudes applied during the burst-on period.