Transactions on Electrical and Electronic Materials

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A New Xenon Plasma Flat Fluorescent Lamp Enhanced with MgO Nano-Crystals for Liquid Crystal Display Applications

  • 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)
  • Received : 2010.03.12
  • Accepted : 2010.07.14
  • Published : 2010.08.25
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Abstract

Nano-sized MgO single crystal powders have recently been reported to emit ultraviolet by stimulation of electrons in a vacuum. In this study, nanocrystalline MgO powders were applied to a xenon plasma flat fluorescent lamp (FFL) for a liquid crystal display backlight to improve its emission efficiency through the extra ultraviolet from the nano-MgO crystals. For comparison, a MgO nano-thin film was applied directly on the phosphors inside a lamp panel through e-beam evaporation. Adding MgO nano-crystal powders to the phosphors improved the luminance and efficiency of FFLs by around 20% and MgO nano-crystal coverage of 40% of the phosphor provided the best FFL emission characteristics; however, application of MgO thin film to the phosphors degraded the emission characteristics, even compared to FFLs without MgO. This was due to insufficient ultraviolet stimulation of the phosphors and the crystallinity and low secondary electron coefficient of the MgO.

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References

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  2. M. Ilmer, R. Lecheler, H. Schweizer, and M. Seibold, SID Int. Symp. Digest Tech. Papers 31 (Long Beach, CA 2000 May 18-22, Society for Information Display), p. 931. https://doi.org/10.1889/1.1833108
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