ILLUMINATION DEVICE, BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an illumination device that prevents leak current between the cold-cathode tube and the reflector, lowering of brightness by leak current between the both cold-cathode tubes and the shortening of the life of the cold- cathode tube when plural cold-cathode tubes are lighted at the same time, and a backlight device and a liquid crystal device using the illumination device. SOLUTION: The illumination device which illuminates the light guiding plate 3 for supplying backlight to the liquid crystal panel is comprised of plural cold-cathode tubes 2 and an inverter 1 that drives the cold-cathode tubes 2 arranged adjoined to each other out of plural cold-cathode tubes 2 by a drive voltage of same frequency, same phase and same size.