Light emitting device having phosphor of alkaline earth metal silicate
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United States of America Patent
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Sep 13, 2005
Grant Date -
Mar 18, 2004
app pub date -
Dec 28, 2001
filing date -
Dec 28, 2000
priority date (Note) -
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Abstract
The light emitting device has a light emitting diode which is made of a nitride semiconductor and a phosphor which absorbs a part of lights emitted from the light emitting diode and emits different lights with wavelengths other than those of the absorbed lights. The phosphor is made of alkaline earth metal silicate fluorescent material activated with europium.
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