PHASE DIFFERENCE FILM, LAMINATED POLARIZING FILM, AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a phase difference film having improved heat-resistant phase difference stability, a small photoelastic modulus and negative optical anisotropy, and to provide a laminated polarizing film achieving a wide viewing angle and a liquid crystal display device having a significantly enlarged viewing angle.

SOLUTION: The phase difference film is formed from a styrene resin containing a copolymer of styrene and maleic acid anhydride, wherein a copolymerization molar ratio of styrene/maleic acid anhydride is 70/30 to 86/14 and a photoelastic coefficient is ≤8×10-12Pa-1. The laminated polarizing film is formed by laminating the phase difference film and a polarizing film. The liquid crystal display device includes the phase difference film.

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