Patent ID: 8187681

Claim:
A transparent film of which Re (λ) and Rth (λ) defined by following formulae (I) and (II) satisfy following formulae (III) and (IV): Re (λ)=( nx−ny )× d, (I) Rth (λ)={( nx+ny )/2 −nz}×d, (II) 0 ≦|Re (630)|≦50, (III) Rth (400)× Rth (700)<0, and 0 ≦|Rth (700)− Rth (400)|≦150, (IV) wherein Re (λ) means an in-plane retardation value at a wavelength λ nm (unit: nm); Rth (λ) means a thickness-direction retardation value at a wavelength λ nm (unit: nm); nx means a refractive index in the in-plane slow-axis direction; ny means a refractive index in the in-plane fast-axis direction; nz means a refractive index in the film thickness direction; and d means a thickness of the film; and wherein the transparent film comprises a compound which has an absorption in a UV region of from 200 to 400 nm and of which the wavelength dispersion of Re and Rth is larger on the shorter wavelength side.