Double-sided backlight and assembly incorporating a...

Illumination – Edge lighted panel – Light source

Reexamination Certificate

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Details

C362S026000, C362S606000, C362S618000, C362S620000, C362S626000, C349S065000

Reexamination Certificate

active

07972051

ABSTRACT:
Described are a backlight, a backlight assembly for use in an electronic device and an electronic device configured to activate the backlight's first light source and to activate the backlight's second light source independently of one another. The described double-sided backlight may illuminate either the primary display or the secondary display. The disclosed backlight includes two light sources, each used to direct light in opposite directions from the double-sided backlight. The light guide of the backlight is configured to direct light from the first light source in a first direction to exit the light guide via its first face, and to direct light from the second light source in a second direction different from the first direction to exit the light guide via its second face.

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patent: 6554440 (2003-04-01), Umemoto
patent: 2002/0064037 (2002-05-01), Lee
patent: 2003/0063456 (2003-04-01), Katahira
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patent: 2006/0187675 (2006-08-01), Tseng et al.
patent: 102004038344 (2005-02-01), None
patent: 1538468 (2005-06-01), None
PCT Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration, mailed Feb. 12, 2008, pp. 1-11, PCT/US2007/077616, European Patent Office.

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