Structure of a light emitting diode

Details Structure of a light emitting diode Structure of a light emitting diode

2007-05-01

2009-08-11

Alavi, Ali (Department: 2875)

Illumination

Plural light sources

With modifier

C362S247000, C362S084000

Reexamination Certificate

active

07572029

ABSTRACT:
A light emitting diode includes a base board, at least one light emitting diodes fitted on an upper side of the base board, and a light shade made of either of glass and quartz, which is secured over said at least one light emitting diodes on the base board; the light shade has a fluorescent powder layer on a top thereof for changing color of light; the light shade has a reflecting layer on lateral wall portions thereof for reflecting light produced by the light emitting diodes such that light gathers at the top of the light shade to be brighter; furthermore, in manufacturing, the lateral wall portions of the light shade are soaked in and etched with hydrofluoric acid so as to have irregular depressions and lumps on the surfaces to enhance reflectivity of the reflecting layer.

REFERENCES:
patent: 7144131 (2006-12-01), Rains
patent: 2005/0099808 (2005-05-01), Cheng et al.
patent: 2006/0186431 (2006-08-01), Miki et al.

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