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EEFLs (External Electrode Fluorescent Lamps) are used as backlight source for large screen size LCDs. Since electrodes are outside of the discharge tube, lifetime is enhanced when compared with CCFLs (Cold Cathode Fluorescent Lamps) and a single inverter can drive multiple EEFL tubes and a compact design can be realized. EEFLs can be driven by both sinusoidal and square waveforms. Moreover, synchronizing...
Electroluminescent (EL) lamps are flat solid-state ac driven devices in which light is generated by impact excitation to optical energies of luminescent centers in a Mn-, Cu- or Tb doped ZnS phosphor layer by high-energy electrons and radiant decay to ground state of these luminescent centers. They are useful in applications which require diffuse low level uniform illumination. This paper presents...
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