| 摘要 |
A retardation film includes a substrate, concave-and-convex regions formed on the substrate and arranged at a pitch smaller than a wavelength of visible light, each of the concave-and-convex regions having a concave portion and a convex portion, and an inorganic film formed on the concave-and-convex regions by depositing an inorganic material on the concave-and-convex regions in a direction oblique to a surface of the substrate.
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