Method for manufacturing spherical blue fluorescent substance
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United States of America Patent
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Jan 11, 2005
Grant Date -
Mar 13, 2003
app pub date -
Aug 16, 2002
filing date -
Dec 2, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a method for manufacturing spherical and highly crystalline BAM blue phosphor particles, that are close to a single crystal. According to the present invention, the spherical BAM blue particles that are preferable for embodying pictures on a very bright PDP screen can be obtained by mixing raw materials with fluxes to prepare a mixture, transferring the mixture into a closed reactor, and heat-treating the mixture under a reducing atmosphere containing nitrogen and hydrogen.
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