Display having light scattering centers
AssigneeRaychem Corporation
InventorsPhilip J. Jones, Akira Tomita, Mark F. Wartenberg
Life of this patent
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Abstract
A display having (a) a first electrode; (b) a second electrode; (c) a display medium positioned between the first and second electrodes, which display medium is switchable between a first state in which incident light is at least one of scattered and absorbed and a second state in which the amount of such scattering and/or absorption is reduced; and (d) scattering centers disposed in front of the second electrode for scattering incident light with a scattering half angle of between about 2 and about 40 degrees when the display medium is in its second state, while permitting at least 10% of the incident light to be transmitted.
Claims15
A display comprising:
- a first electrode means;
- a second electrode means;
- a display medium positioned between the first and second electrode means, which display medium is switchable between a first state in which incident light is at least one of scattered and absorbed and a second state in which the amount of such scattering and/or absorption is reduced;
- and
- plural scattering centers for scattering incident light with a scattering half angle of between about 2 and about 40 degrees when the display medium is in its second state, while permitting at least 10% of the incident light to be transmitted.
A liquid crystal display medium switchable between a first state in which incident light is at least one of scattered and absorbed and a second state in which the amount of such scattering and/or absorption is reduced in the presence of a sufficient electric field, comprising:
- a containment medium;
- discrete volumes of liquid crystals dispersed in the containment medium;
- and
- plural scattering centers dispersed in the containment medium for scattering incident light with a scattering half angle of between about 2 and about 40 degrees when the display medium is in its second state, while permitting at least 10% of the incident light to be transmitted.
Dependencies are inferred from the claim text.