Phoshor and light-emitting diode
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United States of America Patent
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Issued Date -
Aug 2, 2007
app pub date -
Mar 22, 2005
filing date -
Mar 24, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed is a phosphor which is excited by a long wavelength light source in the ultraviolet region or blue-violet visible region and mainly emits light in violet-blue-yellow-red visible region. Also disclosed is a low-cost light-emitting diode which is easily mounted and excellent in color rendering properties. This light-emitting diode does not have much color change due to radiation angle. A phosphor composed of SiC is characterized in that it is excited by an outside light source for emitting light and doped with N and at least one of B and Al.
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