OPTICAL FILM, POLARIZING PLATE AND DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an optical film which is produced without using a solvent and is excellent in optical and physical properties, and in particular which is produced with little break during production and has little variation in retardation, and to provide a polarizing plate and a display device using the same.

SOLUTION: The optical film is formed by melt-casting a melt containing a cellulose ester raw material which is prepared by liquidizing a cellulose ester with a supercritical fluid and then evaporating the supercritical fluid.

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