Mercury-free 18-in. flat fluorescent lamp with good uniformity

摘要

We have dev loped an 18-in. 287×359-mm mercury-free flat fluorescent lamp(FFL) having a new structure that utilizes dielectric barrier discharge and contains pure xenon gas. The electro-optical characteristics have been analyzed. The surface luminance of the lamp having a dif- fuser sheet is 5600 cd/m~2 and the luminance uniformity is 92/100 at an applied voltage of 1050 Vrms and an applied frequency of 20 kHz in the form of a sine wave.