Surface Discharge Characteristics of New Flat Fluorescent Lamp Enhanced by MgO Nano-Crystals

  • Lee, Yang-Kyu (Department of Information and Nano Materials Engineering Kumoh National Institute of Technology) ;
  • Heo, Seung-Taek (Department of Information and Nano Materials Engineering Kumoh National Institute of Technology) ;
  • Lee, You-Kook (Department of Information and Nano Materials Engineering Kumoh National Institute of Technology) ;
  • Lee, Dong-Gu (Department of Information and Nano Materials Engineering Kumoh National Institute of Technology)
  • 발행 : 2009.10.12

초록

It has been recently reported that nano-sized MgO single crystal powders emit ultraviolet by stimulation of electrons under vacuum condition. Therefore, in this study, nano-crystalline MgO powders were applied to a xenon plasma flat fluorescent lamp for LCD backlight to improve emission efficiency of the lamp by help of extra ultraviolet from nano-MgO. For comparison with nano-crystalline MgO powders, MgO nano-thin film was applied directly on phosphors inside a lamp panel through e-beam evaporation The luminance and efficiency of FFL with an addition of MgO nano-crystal powders on phosphors were improved by around 20%. Application of MgO thin film to phosphors worsened the emission characteristics of FFLs, even rather than FFL without MgO. The reason came from insufficient stimulation of phosphors by UV, crystallinity of MgO, and low secondary electron coefficient.

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