| 摘要 |
Provided is a retardation film comprising a polymer film, and, disposed thereon, an optically-anisotropic layer, of which thickness is equal to or less than 5 mum, of which in-plane retardation at a wavelength of 550 nm, Re(550), is from 0 to 10 nm, and of which thickness-direction retardation at the same wavelength, Rth(550), is from 250 to 450 nm; and satisfying the following formula: 1.00<=Rth(450)/Rth(550)<=1.07 or 1.04<=Rth(450)/Rth(550)<=1.09.
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