Backlight module and brightness enhancement film thereof
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United States of America Patent
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Nov 6, 2007
Grant Date -
May 31, 2007
app pub date -
Apr 21, 2006
filing date -
Nov 25, 2005
priority date (Note) -
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Abstract
A backlight module includes a light source, a light guide plate for guiding light from the light source, and a brightness enhancement film having a plurality of spherical surface microlenses for gathering light from the light guide plate. In contrast to traditional prism sheets, the brightness enhancement film having the plurality of spherical surface microlenses have better efficiency of light-gathering.
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