PHASE DIFFERENCE FILM, METHOD FOR MANUFACTURING SAME, AND IMAGE DISPLAY DEVICE

摘要

A phase difference film according to the present invention comprises a laminated body including: a first extension layer which comprises a resin (A) having positive intrinsic birefringence and exhibits wavelength dispersibility (reverse wavelength dispersibility) with the phase difference decreasing as the wavelength shortens in at least the visible light region; and a second extension layer which comprises a resin (B) having positive intrinsic birefringence. The composition of the resin (A) and the composition of the resin (B) are mutually different. The optical axes of both extension layers are mutually parallel. The in-plane phase difference with respect to light of wavelength 590 nm in the phase difference film is 20 to 300 nm. The phase difference film has a laminated structure, can be manufactured by co-extension, can exhibit satisfactory phase difference despite being thin, and exhibits reverse wavelength dispersibility.