Wavelength separator, planar illumination device and liquid crystal display device using the wavelength separator
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United States of America Patent
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Jul 31, 2012
Grant Date -
Jul 30, 2009
app pub date -
Jan 23, 2009
filing date -
Jan 23, 2008
priority date (Note) -
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Abstract
A liquid crystal display device includes a reflective color filter arranged to intersect with an optical path of light emerging from a principal surface of a light guide plate, and a recycle portion arranged at a side of the light guide plate opposite to the reflective color filter. Out of light incident on the light guide plate, light reflected by the reflective color filter is returned to the reflected color filter again by being reflected by the recycle portion via the light guide plate.
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