| 摘要 |
A polymer film that has an in-plane retardation Re(lambda) and a thickness-direction retardation Rth(lambda) satisfying formula (i) and (ii), and that further has a surface energy of at least one surface is from 50 mN/m to 80 mN/m: 0@Re(630)@10, and |Rth(630)|@25;(i) and |Re(400)-Re(700)|@10, and |Rth(400)-Rth(700)|@35.(ii) in the formulae, Re(lambda) and Rth(lambda) are measurement values at the wavelength of lambda nm, and an optically-compensatory film, an optical material such as a polarizer and a liquid-crystal display device using the polymer film.
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