Ecsibeo Ab

Bengt Stebler

Dietrich Demus

Lachezar Komitov

Torbj&ouml;rn Lagerwall

An electrooptic device ( ), and the methods for manufacturing, including a liquid crystal material ( ) disposed between electroded flat glass or polymer substrates ( ) which have been precoated with a e.g. a chiral smectic surface layer ( ) in such way that the surface layer is able to mediate switching of the liquid crystal ( ) between different optical states. The chiral smectic surface layer can be a polymer, oligomer or monomer liquid crystal with paraelectric, ferroelectric, ferrielectric or antiferroelectric response, which is insoluble in the liquid crystal used for the bulk ( ) between the electroded substrates ( ). the switchable surface director enforces a certain orientation of the optic axis in the bulk liquid crystal ( ), which can be a conventional non-chiral or chiral nematic or smectic in a twisted or non-twisted configuration.

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Göteborg, Sweden

Bengt Stebler