| 摘要 |
The present invention relates to a retardation film having a zero wavelength dispersibility and a uniform retardation, and an optical laminated film having a positive wavelength dispersibility. Here, in the retardation film, a homo polypropylene resin has an isotactic index more than 85 percents and having, and a value subtracting an average in-plain retardation value of the retardation film from the in-plain retardation value at the retardation film is in a range of ±5 nm. In the optical laminated film, another retardation film having a negative wavelength dispersibility is laminated on the above retardation film having a zero wavelength dispersibility.
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