OPTICAL SHEET AND COMPOSITE SHEET WITH MOIRE FRINGE, AND BACKLIGHT ASSEMBLY HAVING THE SAME
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United States of America Patent
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Issued Date -
Aug 4, 2011
app pub date -
Sep 8, 2009
filing date -
Sep 8, 2008
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Abandoned
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Abstract
The present invention relates to an optical sheet and a composite sheet with a moire fringe and a backlight assembly having the same. The present invention provides an optical sheet including: a first pattern layer on which a first pattern array is formed and a second pattern layer on which a second pattern array generating a moire fringe by overlapping with the first pattern array is formed. With the present invention, it can expand a viewing angle while improving luminance. In addition, the number of LED light sources mounted on the backlight assembly is reduced, making it possible to reduce production costs.
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