Patent ID: 7532286

Claim:
An optical resin film, which has Re (λ) and Rth (λ) satisfying retardation requirements (A) to (D), and has a thickness of from 30 μm to 80 μm: (A) 0.1<Re (450)/Re (550)<0.95 (B) 1.03<Re (650)/Re (550)<1.93 (C) 0.4<(Re/Rth (450))/(Re/Rth (550)))<0.95 (D) 1.05<(Re/Rth (650)/(Re/Rth (550))<1.9 wherein Re (λ) represents an in-plane retardation value of the optical resin film with respect to light having a wavelength of λ nm; Rth (λ) represents a thickness direction retardation value of the optical resin film with respect to light having a wavelength of λ nm; and Re/Rth (λ) represents a ratio of an in-plane retardation value to a thickness direction retardation value of the optical resin film with respect to light having a wavelength of λ nm (unit: nm).