Optical compensatory sheet and liquid crystal display
First Claim
1. An optical compensatory sheet comprising a transparent support and an optically anisotropic layer provided thereon and having an optic axis inclined at 20 to 34 degrees from the normal of the sheet,wherein the optically anisotropic layer is formed from a discotic compound capable of forming a discotic nematic phase and an organic compound which has compatibility with the discotic compound and is capable of lowering a transition temperature to the discotic nematic phase by at least 10°
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Accused Products
Abstract
Disclosed is an optical compensatory sheet comprising a transparent support and an optically anisotropic layer provided thereon and having an optic axis inclined at 20 to 34 degrees from the normal of the sheet, wherein the optically anisotropic layer is formed from a discotic compound capable of forming a discotic nematic phase and an organic compound which has compatibility with the discotic compound and is capable of lowering a transition temperature of the discotic nematic phase by at least 10° C. Further, a liquid crystal display provided with the optical compensatory sheet is disclosed.
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Citations
20 Claims
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1. An optical compensatory sheet comprising a transparent support and an optically anisotropic layer provided thereon and having an optic axis inclined at 20 to 34 degrees from the normal of the sheet,
wherein the optically anisotropic layer is formed from a discotic compound capable of forming a discotic nematic phase and an organic compound which has compatibility with the discotic compound and is capable of lowering a transition temperature to the discotic nematic phase by at least 10°
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15. A liquid crystal display comprising a liquid crystal cell which comprises a pair of substrates provided with a transparent electrode and twist-oriented nematic liquid crystal sealed therebetween, a pair of polarizing sheets arranged on both sides of the cell, and an optical compensatory sheet provided between the liquid crystal cell and the polarizing sheet;
wherein the optical compensatory sheet comprises a transparent support and an optically anisotropic layer provided thereon and has an optic axis inclined at 20 to 34 degrees from the normal of the sheet, the optically anisotropic layer being formed from a discotic compound capable of forming a discotic nematic phase and an organic compound which has compatibility with the discotic compound and is capable of lowering a transition temperature to the discotic nematic phase by at least 10°
C.- View Dependent Claims (16, 17, 18, 19, 20)
Specification