RETARDATION FILM BASED ON OPTICALLY ALIGNED LIQUID CRYSTALLINE POLYIMIDE AND OPTICAL DEVICE
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United States of America Patent
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Issued Date -
May 31, 2012
app pub date -
Jun 17, 2010
filing date -
Jun 25, 2009
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Abstract
Provided is a technology by which a retardation film in which regions different from each other in one or both of optical characteristics, i.e., an optical axis and a retardation are patterned can be produced with an additionally small load. The retardation film is formed of a liquid crystalline polyimide film having a photoreactive group. Further provided is an optical device and a liquid crystal display apparatus each having the retardation film.
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