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US 5,247,377 AGranted
Process for producing anisotropic liquid crystal layers on a substrate
AssigneeRohm GmbH Chemische Fabrik
InventorsJuergen Omeis, Norbert Rau, Michael Kunesch
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Abstract
A process for producing thin, anisotropic layers composed of liquid crystalline substances, the liquid crystalline substances being applied in a thin layer to one side of a support having a surface prestructured in such a way that the structure is given a preferred direction which determines orientation of the liquid crystalline substance and data storage devices produced.
Claims30
A process for producing an anisotropic layer of a liquid crystalline substance on one substrate, comprising the steps of:
- deforming a surface of the one substrate by producing parallel grooves on said surface,
- applying a 0.1-5 micron layer of a liquid crystalline substance capable of being oriented by said grooves onto said grooved surface, wherein said grooves orient said liquid crystalline substance, and
- tempering the liquid crystalline substance.
A data storage device, comprising:
- one substrate, said one substrate having at least one surface, wherein said surface has parallel grooves therein, and
- a 0.1-5 micron layer of oriented liquid crystalline material in contact with said grooved surface of said one substrate.
Dependencies are inferred from the claim text.