Light emitting diode apparatus and method for enhancing luminous efficiency thereof
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United States of America Patent
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Apr 16, 2013
Grant Date -
Nov 24, 2011
app pub date -
May 24, 2010
filing date -
May 24, 2010
priority date (Note) -
Expired
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Abstract
A light emitting diode apparatus with enhanced luminous efficiency is disclosed in the present invention. The light emitting diode apparatus includes a light emitting diode chip for providing a first light beam; a substrate, having a cross-section of a trapezoid, for supporting the light emitting diode chip, which is transparent to the first light beam; and an encapsulating body, containing a phosphor and encapsulating the light emitting diode chip and the substrate, for fixing the light emitting diode chip and the substrate and providing a second light beam when the phosphor is excited by the first light beam. Due to the shape of the substrate, contact area of the substrate with the phosphor is enlarged. Luminous efficiency is enhanced as well.
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