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US 6,618,113 B1Granted
Liquid crystal device
AssigneeSharp Kabushiki Kaisha
InventorsDiana Cynthia Ulrich, Craig Tombling
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Abstract
A liquid crystal device comprises pixels which are switchable between a white state and a black state. Spacers are disposed in gaps between the pixels and are birefringent such that the spacers have the same optical properties as liquid crystal in the black state. For example, the spacers may have the same retardation as the liquid crystal layer with an optic axis fixed in the direction of the optic axis of the liquid crystal when in the black state.
Claims29
A liquid crystal device comprising:
- a liquid crystal layer containing a plurality of pixels separated by interpixel gaps, each of the pixels having a first optical state resulting in maximum light attenuation, characterised by at least one spacer disposed in the interpixel gaps and having substantially the same retardation as the first pixel optical state.
Dependencies are inferred from the claim text.