Zeon Corporation

Hung Trong La

Shuhei Okude

Kazuki Takagi

A layered phase difference film including, in the following order: a resin layer Aformed of a resin Ahaving a positive intrinsic birefringence; a resin layer B formed of a resin B having a negative intrinsic birefringence; and a resin layer Aformed of a resin Ahaving a positive intrinsic birefringence, wherein the resin layer Aand the resin layer B are in direct contact with each other, the resin layer B and the resin layer Aare in direct contact with each other, the resin layer Aand the resin layer Aare negative C-plates, the resin layer B is a positive B-plate, and the layered phase difference film has an Nz coefficient within a range of 0 to 1.

Multilayer retardation film and method for producing same

The present invention provides a liquid crystal display that prevents false colors and has a wide viewing angle, display screen contrast that does not decline, and excellent productivity. The liquid crystal display, comprising a liquid crystal cell, a sheet-shaped optically anisotropic body positioned on only one side of the liquid crystal cell, and a pair of light polarizers located on both sides of the liquid crystal cell, wherein the optically anisotropic body satisfies the relationship of n&#x3e;n&#x3e;nat wavelength of 550 nm, where nis in-plane refraction index of lag axis direction, nis refraction index of the direction perpendicular to the lag axis in the plane, and nis refraction index of the thickness direction; and has a local minimal value in wavelength range of 380 to 490 nm and monotonous increase in both the short wavelength and long wavelength directions from the wavelength that shows the local minimal value, in wavelength characteristics of frontal direction retardation for light in wavelength range of 380 to 780 nm.

Growing community of inventors

Tokyo, Japan

Hung Trong La