Low profile and high efficiency lighting device for...

Details Low profile and high efficiency lighting device for... Low profile and high efficiency lighting device for...

2006-11-27

2009-10-27

Payne, Sharon E (Department: 2875)

Illumination

Edge lighted panel

Light source

C362S561000

Reexamination Certificate

active

07607815

ABSTRACT:
A light source having a flexible substrate and a plurality of dies having LEDs is disclosed. The light source can be conveniently utilized to provide an extended light source by bonding the light source to a suitable light pipe. The substrate is divided into first and second regions. The dies are bonded to the substrate in a first region. A portion of the surface of the substrate in the second region is reflective. The substrate is bent such that the second region forms a reflector that reflects light that would otherwise be emitted in a non-useful direction to a more useful direction. The substrate can be constructed from a three layer flexible circuit carrier in which the dies are mounted on a bottom metal layer to provide an improved thermal path for heat generated in the dies.

REFERENCES:
patent: 5440460 (1995-08-01), Melberg
patent: 6441943 (2002-08-01), Roberts et al.
patent: 6513949 (2003-02-01), Marshall et al.
patent: 2003/0156430 (2003-08-01), Ota et al.
patent: 2004/0141305 (2004-07-01), Higashiyama

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