OPTICAL POLYMER FILM, POLARIZER USING SAME, AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To improve contrast of an IPS liquid crystal display device and to cancel difference of hue between color viewed from a front direction and the color viewed from an oblique direction in an IPS mode liquid crystal display device.

SOLUTION: An optical polymer film characterized in 0≤Re(630)≤10, 5≤Rth(630)≤30, and -15≤Rth(λ)≤33 over an entire light wavelength range of 480 to 750 nm is used for a liquid crystal display device. In the formula, Re(λ) is a front retardation value (unit :nm) at a wavelength of λ nm and Rth(λ) is a retardation value (unit :nm) in a film-thickness direction at the wavelength of λ nm.

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