Optical retardation firm
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United States of America Patent
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Sep 12, 2006
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N/A
app pub date -
Mar 3, 2004
filing date -
Sep 17, 1996
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Abstract
The invention relates to an optical retardation film comprising two layers of an anisotropic polymer adjacent to each other or adjacent to both sides of a substrate, characterized in that each layer exhibits a tilted structure with an optical symmetry axis having a tilt angle .theta. relative to the plane of the layer, to a means to produce substantially linear polarized light comprising such an optical retardation film and to a liquid crystal display comprising such an optical retardation film.
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