Brightness enhancement film having curved prism units and microstructure layer
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United States of America Patent
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app pub date -
Jan 17, 2007
filing date -
Jul 2, 2004
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Abandoned
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Abstract
A brightness enhancement film includes a substrate, a plurality of curved prism units and a light-diffusing microstructure layer. The curved prism units are extended in parallel and formed on a first surface of the substrate. Each of the curved prism units includes at least one meandering surface to provide with changes in curvature. Thus, the meandering surface of the curved prism unit is able to refract incident light in two dimensions with respect to the substrate that may enhance entire light-collecting efficiency in two dimensions. The light-diffusing microstructure layer is formed on a second surface of the substrate.
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