Liquid crystal display with ellipsoidal polarizing plate having an optically anisotropic layer transparent substrate and a polarizing membrane
First Claim
1. A liquid crystal display comprising a liquid crystal cell of a bend alignment mode and two polarizing elements respectively arranged on each side of the liquid crystal cell, at least one of said polarizing elements being an ellipsoidal polarizing plate comprising a lamination of an optically anisotropic layer, a transparent substrate and a polarizing membrane, said optically anisotropic layer containing discotic compounds, said transparent substrate being optically anisotropic, and said polarizing membrane being arranged as an outermost layer of the liquid crystal display,wherein the optically anisotropic layer and the transparent substrate are so arranged that an angle between a normal discotic direction and a slow axis in a plane of the transparent substrate is essentially 45°
- , said normal discotic direction being an average of directions obtained by projecting normal lines of discotic planes of the discotic compounds on the plane of the transparent substrate, and wherein the transparent substrate and the polarizing membrane are so arranged that the slow axis in plane of the transparent substrate is essentially parallel to or essentially perpendicular to a transmission axis in plane of the polarizing membrane.
3 Assignments
0 Petitions
Accused Products
Abstract
A liquid crystal display comprises a liquid crystal cell of a bend alignment mode or a homogeneous alignment mode and two polarizing elements. Each of the elements is arranged on each side of the liquid crystal cell. At least one of the polarizing elements is an ellipsoidal polarizing plate. The ellipsoidal polarizing plate comprises a lamination of an optically anisotropic layer, a transparent substrate and a polarizing membrane. The optically anisotropic layer contains discotic compounds. The transparent substrate is optically anisotropic. The polarizing membrane is arranged as an outermost layer of the liquid crystal display. The optically anisotropic layer and the transparent substrate are so arranged that an angle between a normal discotic direction and a slow axis in plane of the transparent substrate is essentially 45°. The normal discotic direction is an average of directions obtained by projecting normal lines of discotic planes of the discotic compounds on plane of the substrate. The transparent substrate and the polarizing membrane are so arranged that a slow axis in plane of the transparent substrate is essentially parallel to or essentially perpendicular to a transmission axis in plane of the polarizing membrane.
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Citations
23 Claims
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1. A liquid crystal display comprising a liquid crystal cell of a bend alignment mode and two polarizing elements respectively arranged on each side of the liquid crystal cell, at least one of said polarizing elements being an ellipsoidal polarizing plate comprising a lamination of an optically anisotropic layer, a transparent substrate and a polarizing membrane, said optically anisotropic layer containing discotic compounds, said transparent substrate being optically anisotropic, and said polarizing membrane being arranged as an outermost layer of the liquid crystal display,
wherein the optically anisotropic layer and the transparent substrate are so arranged that an angle between a normal discotic direction and a slow axis in a plane of the transparent substrate is essentially 45° - , said normal discotic direction being an average of directions obtained by projecting normal lines of discotic planes of the discotic compounds on the plane of the transparent substrate, and wherein the transparent substrate and the polarizing membrane are so arranged that the slow axis in plane of the transparent substrate is essentially parallel to or essentially perpendicular to a transmission axis in plane of the polarizing membrane.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A liquid crystal display comprising a liquid crystal cell of a homogeneous alignment mode and two polarizing elements respectively arranged on each side of the liquid crystal cell, at least one of said polarizing elements being an ellipsoidal polarizing plate comprising a lamination of an optically anisotropic layer, a transparent substrate and a polarizing membrane, said optically anisotropic layer containing discotic compounds, said transparent substrate being optically anisotropic, and said polarizing membrane being arranged as an outermost layer of the liquid crystal display,
wherein the optically anisotropic layer and the transparent substrate are so arranged that an angle between a normal discotic direction and a slow axis in a plane of the transparent substrate is essentially 45° - , said normal discotic direction being an average of directions obtained by projecting normal lines of discotic planes of the discotic compounds on the plane of the transparent substrate, and wherein the transparent substrate and the polarizing membrane are so arranged that the slow axis in plane of the transparent substrate is essentially parallel to or essentially perpendicular to a transmission axis in plane of the polarizing membrane.
- View Dependent Claims (12, 13, 14)
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15. An ellipsoidal polarizing plate comprising a lamination of an optically anisotropic layer, a transparent substrate and a polarizing membrane, said optically anisotropic layer containing discotic compounds, said transparent substrate being optically anisotropic, and said polarizing membrane being arranged as an outermost layer,
wherein the optically anisotropic layer and the transparent substrate are so arranged that an angle between a normal discotic direction and a slow axis in plane of the transparent substrate is essentially 45° - , said normal discotic direction being an average of directions obtained by projecting normal lines of discotic planes of the discotic compounds on plate of the substrate, and wherein the transparent substrate and the polarizing membrane are so arranged that a slow axis in plane of the transparent substrate is essentially parallel to or essentially perpendicular to a transmission axis in plane of the polarizing membrane.
- View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
Specification