OPTICAL FILM, PROCESS FOR PRODUCING THE SAME AND POLARIZING PLATE USING THE SAME, LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME AND POLARIZING PROJECTION SCREEN USING THE SAME
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United States of America Patent
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app pub date -
Mar 27, 2014
filing date -
Mar 29, 2013
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Abandoned
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Abstract
To provide an optical film that can transmit one of orthogonal polarized components and scatter the other one thereof and a process for producing the optical film. An optical film includes an optically isotropic continuous phase and an optically anisotropic dispersed phase, in which the optically isotropic continuous phase has a birefringence of below 1.5×10−4; a ratio: L1/L2 of a mean Feret diameter L1 of the optically anisotropic dispersed phase in one direction D1 of in-plane directions of the optical film to a mean Feret diameter L2 of the optically anisotropic dispersed phase in a direction D2 orthogonal to the direction D1 is 2.5 or more; and the mean Feret diameter L2 is 0.5 μm or less.
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