Efficiency Improvement of Blue Emission of PDP by Gd Doped MgO Film

Takao SAWADA  Ko SANO  Manabu AKIBA  

IEICE TRANSACTIONS on Electronics   Vol.E85-C   No.11   pp.1884-1887
Publication Date: 2002/11/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Electronic Displays)
Category: Plasma Displays
PDP,  MgO,  Gd,  color temperature,  protecting film,  

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We developed a new method to improve the efficiency of the PDP (plasma display panel) by the use of a novel protecting film or Gd doped MgO film. In the cells of the PDP, the VUV (vacuum ultraviolet ray) is generated by Xe discharge. The VUV is simply absorbed by the protecting film or MgO film. Therefore, normally the absorbed VUV doesn't contribute to the light conversion efficiency. However, the novel protecting film or MgO:Gd film radiates the ultraviolet ray of which 317 nm wavelength, by the irradiation of the shorter wavelength VUV, and it excites the blue phosphor. Consequently the efficiency of blue emission is improved.