OPTICAL FILM AND BACKLIGHT MODULE USING SAME
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United States of America Patent
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Issued Date -
Jun 25, 2009
app pub date -
May 21, 2008
filing date -
Dec 19, 2007
priority date (Note) -
Abandoned
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Abstract
An optical film has at least one surface forming a dense and alternate arrangement of light condensation structures. The light condensation structures have a pyramid configuration having a major axis and a minor axis. Each light condensation structure forms four differently oriented light emission faces, so that the light condensation structure simultaneously condenses lights that are in vertical direction and horizontal direction with respect to the optical film and then emits the condensed lights. In this way, when the optical film is applied to a backlight module, the number of the optical film required by the backlight module to realize desired condensation of light can be reduced to thereby lower the manufacturing costs of the backlight module.
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