Study on Preparation and Property of a High Luminance Flat Back-light for LCD

A new flat back-light excited by plasma employing solid ITO film as the electrode was developed.This back-light was composed of two flat glasses in which the pure Xe(at pressure of 2.66×104 Pa) and a layer of phosphor was sealed.Two ITO films were added on the out surfaces by using the transparent conductive tape,where the glass with thickness of 1.1 mm was used as the dielectric barrier discharge layer.The white light was available by exciting the phosphor layer with the plasmas introduced by high-frequency voltage.The luminance was 5000 cd/m2 accompanied with the lighting homogeneity over 92%.The experimental results showed that the most suitable driving frequency was 10.0 kHz,and the lifetime reached 5000 hours.