DIELECTRIC BARRIER DISCHARGE LAMP, BACKLIGHT DEVICE, AND LIQUID CRYSTAL DISPLAY

摘要

A dielectric barrier discharge lamp (100A) equipped with a pair of external electrodes (11A, 11B) arranged in series along the direction of tube axis a on the outside of a bulb (10). The lamp capacity C0, which is the capacitance between the pair of external electrodes (11A, 11B), is set such that the quantity q0 of charges discharged per unit length of the external electrode (11A, 11B) and per one discharge is smaller than 100 nC/m between the pair of external electrodes (11A, 11B). The lamp capacity C0 can be adjusted by the width w, the length L of the external electrodes (11A, 11B) and the air gap distance d to the bulb (10). Consequently, high lamp efficiency can be achieved.