Liquid crystal device
AssigneeCanon Kabushiki Kaisha
InventorsTakahiro Hachisu, Seishi Miura
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Abstract
A liquid crystal device is constructed in such a structure that a plurality of stripe bulkheads substantially perpendicular to a direction of a layer of a smectic liquid crystal are provided on at least one of a pair of substrates retaining the smectic liquid crystal therebetween and that an elastic modulus E of the bulkheads, an outside pressure P, an area A1 of the substrate, a total area A2 of contact surfaces between the bulkheads and the substrate, and a volumetric shrinkage ratio ΔVlc/Vlc of the smectic liquid crystal within an ambient temperature range of the liquid crystal device satisfy the following relation: (1/E)×P×(A1/A2)≧ΔVlc/Vlc, whereby the bulkheads become able to be compressed in response to volumetric shrinkage of the liquid crystal.
Claims10
A liquid crystal device comprising a pair of substrates retaining a smectic liquid crystal therebetween and a plurality of bulkheads intersecting with a direction of a layer of the smectic liquid crystal provided on at least one of the pair of substrates,
- wherein an elastic modulus E of the bulkheads, an outside pressure P, an area A1 of the substrate, a total area A2 of contact surfaces between the bulkheads and the substrate, and a volumetric shrinkage ratio ΔVlc/Vlc of the smectic liquid crystal within a temperature variation range of an atmosphere in which the liquid crystal device is placed satisfy the following relation:
- (1/E)×P×(A1/A2)≧ΔVlc/Vlc.
A liquid crystal device comprising a pair of substrates retaining a smectic liquid crystal therebetween and a plurality of stripe bulkheads intersecting with a direction of a layer of the smectic liquid crystal provided on at least one of the pair of substrates,
- wherein an elastic modulus E, a height L, a spacing D, and a length H of the bulkheads, an outside pressure P, an area A1 of the substrate, a total area A2 of contact surfaces between the bulkheads and the substrate, and a volumetric shrinkage amount ΔVlc within a temperature variation range of an atmosphere in which the liquid crystal device is placed, of the smectic liquid crystal filled in a space defined by the pair of substrates and a pair of bulkheads satisfy the following relation:
- (1/E)×L×P×(A1/A2)≧ΔVlc/(D×H).
Dependencies are inferred from the claim text.