MATERIALS AND CONFIGURATIONS FOR REDUCING WARPAGE IN OPTICAL FILMS
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United States of America Patent
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app pub date -
Jan 21, 2009
filing date -
May 1, 2003
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Abandoned
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Abstract
A multilayer optical body is disclosed and includes a light reflecting element formed from a first polymer material and a second polymer material having an index of refraction difference sufficient to reflect light of at least one polarization, and at least one non-optical warp-resistant layer disposed on the light reflecting element. The at least one non-optical one warp-resistant layer includes an intimate mixture of i) polystyrene or a first polystyrene copolymer and ii) a second polystyrene copolymer or ii) a polyester or copolyester.
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