Transparent heat spreader for LEDs

Details Transparent heat spreader for LEDs Transparent heat spreader for LEDs

2009-02-26

2010-12-14

Dang, Phuc T (Department: 2892)

Active solid-state devices (e.g., transistors, solid-state diode

Incoherent light emitter structure

With housing or contact structure

C438S026000

Reexamination Certificate

active

07851819

ABSTRACT:
A heat spreader for an LED can include a thermally conductive and optically transparent member. The bottom side of the heat spreader can be configured to attach to a light emitting side of the LED. The top and/or bottom surface of the heat spreader can have a phosphor layer formed thereon. The heat spreader can be configured to conduct heat from the LED to a package. The heat spreader can be configured to conduct heat from the phosphors to the package. By facilitating the removal of heat from the LED and phosphors, more current can be used to drive the LED. The use of more current facilitates the construction of a brighter LED, which can be used in applications such as flashlights, displays, and general illumination. By facilitating the removal of heat from the phosphors, desired colors can be better provided.

REFERENCES:
patent: 7618157 (2009-11-01), Galvez et al.
patent: 2002/0176459 (2002-11-01), Martinsen
patent: 2005/0232818 (2005-10-01), Sandell et al.
patent: 2006/0279949 (2006-12-01), Shin et al.
patent: 2008/0099777 (2008-05-01), Erchak et al.
patent: 2008/0175008 (2008-07-01), Hu et al.
patent: 2009/0161354 (2009-06-01), Hsu et al.

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