RETARDATION FILM, POLARIZING PLATE, AND VERTICALLY ALIGNED LIQUID CRYSTAL DISPLAY

摘要

Disclosed is a long retardation film having a slow axis in the film width direction, wherein the in-plane elastic modulus e_s in the slow axis direction and the in-plane elastic modulus e_f in the fast axis direction (the direction perpendicular to e_s) satisfy the following relation (1). 1.26 = e_s/e_f = 2.60 (1) This retardation film is also characterized in that the in-plane retardation Ro is 30-100 nm and the retardation in the thickness direction Rt is 70-300 nm at a wavelength of 589 nm, with Rt/Ro being 2-5.