| 摘要 |
The invention more particularly relates to a reusable device for writing, displaying and deleting information with an electronic means on a support means comprising bistable liquid crystals. The object of the invention is a reusable device for writing and displaying information, comprising a substrate (1) onto which are successively applied and from the substrate (1): an electricity conducting coating (2); an optical coating (3) that can absorb all or part of the surrounding light; a coating of a transparent substance (4) in which a plurality of bistable liquid crystals (5) are emulsioned; at least one electricity conducting element (7), characterized in that the electricity conducting element (7) is electrically connected to the electricity conducting coating via an electrical voltage generator (8) to form an electric circuit (9), and in that the electricity conducting element (7) is put into contact and can be moved over the surface of the transparent coating (4) in which a plurality of bistable liquid crystals (5) are emulsioned, to produce a modification of the state of light transmission in said transparent coating at the contact, so as to generate the writing and displaying of information, or the deleting of the displayed information. The invention is used in the technical field of writing and displaying with a liquid crystal support screen.
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