No abstract

At the pressure range of 30~200 Torr in EEFLs, the lifetimes will be discussed to be about 60,000 hours in the long run operation of 11,000 hours. In the test of lamp failure, pinhole formation has been shown to be the insulation layer breakdown of glass in the dielectric barrier discharge of capacitive coupled EEFLs.

Cold cathode fluorescent lamps (CCFLs) adopting MgO‐Coated Electrode are investigated to be a high performance with respect to the reduction of lamp voltage and ignition voltage, the increase of luminance and efficiency, and the reduction of heat‐generation at the electrode in comparison with the conventional CCFLs.

The plasma propagation has been investigated by observing the optical signal along the tube of the EEFL for 32″ LCD backlight unit. The light starting from the electrode of high voltage moves toward the other side of electrode grounded electrically with the electron plasma propagation speed about 4×105 m/s.