Direct current liquid crystal display with highly reflecting dielectric mirror
First Claim
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1. A liquid crystal display for reflection viewing of a direct current electro-optic change in a liquid crystal layer by a reflection bandwidth having a center wavelength, λ
- , comprising;
between two electrodes a layer of liquid crystalline composition in contact with a dielectric mirror;
said dielectric mirror having a thickness effective for conducting direct current and comprising at least one pair of titanium dioxide and silicon dioxide layers, each layer having an optical thickness of nt = [(m +
1)/4)]λ
where n is the index of refraction, t is the layer thickness and m is selected from the group consisting of 0 and positive whole numbers;
said layer of titanium dioxide being in contact with said layer of liquid crystalline composition.
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Abstract
A direct current liquid crystal display device for reflection viewing comprises a dielectric mirror having at least one pair of titanium dioxide and silicon dioxide layers, the titanium dioxide layer being in contact with a layer of liquid crystalline composition, between two electrodes.
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Citations
10 Claims
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1. A liquid crystal display for reflection viewing of a direct current electro-optic change in a liquid crystal layer by a reflection bandwidth having a center wavelength, λ
- , comprising;
between two electrodes a layer of liquid crystalline composition in contact with a dielectric mirror;
said dielectric mirror having a thickness effective for conducting direct current and comprising at least one pair of titanium dioxide and silicon dioxide layers, each layer having an optical thickness of nt = [(m +
1)/4)]λ
where n is the index of refraction, t is the layer thickness and m is selected from the group consisting of 0 and positive whole numbers;
said layer of titanium dioxide being in contact with said layer of liquid crystalline composition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- , comprising;
Specification