Backlight and display system using same
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United States of America Patent
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Jun 3, 2014
Grant Date -
May 23, 2013
app pub date -
Jan 15, 2013
filing date -
May 20, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A backlight that includes a front reflector and a back reflector that form a hollow light recycling cavity including an output surface is disclosed. The backlight further includes one or more light sources disposed to emit light into the light recycling cavity. The front reflector includes an on-axis average reflectivity of at least 90% for visible light polarized in a first plane, and an on-axis average reflectivity of at least 25% but less than 90% for visible light polarized in a second plane perpendicular to the first plane.
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