Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Reexamination Certificate
2007-08-20
2010-06-15
Stahl, Mike (Department: 2874)
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
C362S610000, C362S615000, C362S628000
Reexamination Certificate
active
07738053
ABSTRACT:
A backlight unit includes a light-source substrate having mounted thereon a plurality of light-emitting elements emitting illumination light; a light guide plate having a side surface with the light-source substrate attached thereto so as to receive the illumination light from the light-emitting elements, the light guide plate also having a first surface extending substantially perpendicular to the side surface, and a second surface; a reflective sheet attached to the first surface and reflecting the illumination light towards the second surface; and an optical sheet layer attached to the second surface and including a plurality of stacked optical sheets. The side surface has a reflective portion that reflects at least a part of the illumination light. The at least a part of the illumination light to be reflected at the reflective portion is incident on the reflective portion at an incidence angle equal to or above a critical angle.
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Sony Corporation
Stahl Mike
Wolf Greenfield & Sacks P.C.
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