| 摘要 |
A retardation film which hardly causes shift or unevenness in retardation values and which has a refractive index profile of nx>nz>ny (that is, 0<Rth[590]/Re[590]<1) is provided. A retardation film according to an embodiment of the present invention comprises a stretched polymer film containing a styrene-based resin and a polycarbonate-based resin, which satisfies the following expressions (1) and (2): <?in-line-formulae description="In-line Formulae" end="lead"?>100 nm<=Re[590]<=350 nm (1)<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>0.2<=Rth[590]/Re[590]<=0.8 (2)<?in-line-formulae description="In-line Formulae" end="tail"?> |
