Process for aligning liquid-crystalline polymers
AssigneeHoechst Aktiengesellschaft
InventorPeter Harnischfeger
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Abstract
A process for aligning a layer of a liquid-crystalline, polymeric material in which a gas or liquid stream is passed over the liquid-crystalline, polymeric material, preferably for aligning main-chain polymers which have a nematic phase by passing a hot stream of air onto the material. Electrooptical displays which contain an alignment layer of this type have high contrast. The alignment layers have advantages over conventional rubbed alignment layers since, for example, no electrostatic charging takes place.
Claims7
A process for aligning a layer of a liquid-crystalline, polymeric material, which comprises passing a laminar gas stream, having a temperature in the range of the nematic phase of the liquid-crystalline polymeric material, over the liquid-crystalline, polymeric material to achieve said aligning of said layer.
Dependencies are inferred from the claim text.