Ellipsoidal polarizing plate comprising two optically anisotropic layers and polarizing membrane
AssigneeFuji Photo Film Co., Ltd.
InventorYoji Ito
Life of this patent
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Abstract
An ellipsoidal polarizing plate comprises two optically anisotropic layers, a polarizing membrane and a transparent protective film. Each of the optically anisotropic layers has a direction giving the maximum refractive index and a plane of the layer. The first optically anisotropic layer has an angle of 5° to 85° between the direction giving the maximum refractive index and the plane. The second optically anisotropic layer is optically positive and uniaxial. The second optically anisotropic layer has an angle of 0° to 5° between the direction giving the maximum refractive index and the layer plane.
Claims10
An ellipsoidal polarizing plate comprising:
- a first optically anisotropic layer;
- a second optically anisotropic layer;
- a polarizing membrane;
- and
- a transparent protective film,
- wherein the first optically anisotropic layer has an angle of 5° to 85° between the direction giving the maximum refractive index and the layer plane, and wherein the second optically anisotropic layer is optically positive and uniaxial, and the second optically anisotropic layer has an angle of 0° to 5° between the direction giving the maximum refractive index and the layer plane.
A liquid crystal display comprising a liquid crystal cell of TN mode and two polarizing elements arranged on both sides of the liquid crystal cell, wherein at least one of the polarizing elements is an ellipsoidal polarizing plate comprising a first optically anisotropic layer, a second optically anisotropic layer, a polarizing membrane and a transparent protective film, wherein the first optically anisotropic layer has an angle of 5° to 85° between the direction giving the maximum refractive index and the layer plane, and wherein the second optically anisotropic layer is optically positive and uniaxial, and the second optically anisotropic layer has an angle 0° to 5° between the direction giving the maximum refractive index and the layer plane.
Dependencies are inferred from the claim text.