Method and apparatus for backlighting a device

Details Method and apparatus for backlighting a device Method and apparatus for backlighting a device

2005-06-29

2008-08-05

Payne, Sharon E (Department: 2875)

Illumination

Edge lighted panel

Light source

C362S800000, C362S616000, C362S555000, C362S556000, C362S560000

Reexamination Certificate

active

07407315

ABSTRACT:
A light guide panel is disclosed. The panel comprises a plate for dispersing light and at least one light-emitting diode (LED) coupled to the plate for providing the dispersed light. When the panel is coupled to a keyboard, the at least one LED is under a portion of the keyboard such that when the at least one LED is illuminated, the light from the LED does not distract a user. Accordingly, by strategically placing LEDs within the panel and providing the LEDs under appropriate portions of the keyboard, the device utilizing the keyboard can be smaller than when a conventional light guide panel is utilized. In addition, a further improvement in illumination is provided when a mechanism is provided which reflects light escaping from the edges of the panel back into the panel.

REFERENCES:
patent: 5295216 (1994-03-01), Halter
patent: 6322229 (2001-11-01), Chan et al.
patent: 6361180 (2002-03-01), Iimura
patent: 6364497 (2002-04-01), Park et al.
patent: 6402335 (2002-06-01), Kalantar et al.
patent: 6498631 (2002-12-01), Natsuyama
patent: 6513943 (2003-02-01), Fukuyoshi
patent: 6905237 (2005-06-01), Jacobs et al.
patent: 7153018 (2006-12-01), Nomura
patent: 2003/0058632 (2003-03-01), Maeda et al.
patent: 2004/0008505 (2004-01-01), Chiang
patent: 2004/0017688 (2004-01-01), Liu

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