Patent ID: 7518594
Filing Date: 2009-04-14
Classification: G02F,G09G,H01J,H05B

Abstract:
1. A liquid crystal display device including a liquid crystal display panel and a backlight disposed behind said liquid crystal display panel, said backlight comprising: a light source comprising a discharge tube including a sealed-off transparent tube body and a discharge gas sealed within said sealed-off transparent tube body with no electrodes disposed within said sealed-off transparent tube body, and first and second electrodes disposed outside said sealed-off transparent tube body; and a power source which supplies a first high-frequency voltage to said first electrode and a second high-frequency voltage to said second electrode, wherein said first electrode is disposed at one end of said sealed-off transparent tube body in a direction of a longitudinal axis thereof, and said second electrode is disposed at another end of said sealed-off transparent tube body in the direction of the longitudinal axis thereof; wherein a phase of said first high-frequency voltage is opposite from a phase of said second high-frequency voltage, and wherein a length of a first wiring for coupling said power source to said first electrode is approximately equal to a length of a second wiring for coupling said power source to said second electrode.