Phosphor and plasma display panel using the same
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United States of America Patent
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Dec 16, 2008
Grant Date -
Dec 8, 2005
app pub date -
May 4, 2005
filing date -
May 11, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A phosphor of the present invention is characterized by: having a phosphor main portion containing zinc silicate as a base material and manganese as an activator; and having at least one element from among titanium (Ti), zirconium (Zr), and hafnium (Hf), or having at least one element from among molybdenum (Mo) and tungsten (W), added to the phosphor main portion. The phosphor with such a composition is capable of precisely controlling the composition of a surface region (i.e. the surface including the vicinity) of each phosphor particle and improving the crystallinity, which leads to a high luminous efficiency and a reduction in time-lapse degradation.
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