Reflecting cell with modulable reflectivity
AssigneesNexter Systems, Institut Mines Telecom—Imt Atlantique—Bretagne—Pays De La Loire
InventorsLaurent Dupont, Suman Manna
Life of this patent
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Abstract
A reflecting cell including at least two substrates each covered by an electrode and facing each other, the substrates delimitating between them a volume which separates them and which is filled with a bistable liquid crystal-type material with a threshold field, for example a cholesteric liquid crystal, both electrodes being intended to be connected to a voltage source. This cell is characterized in that at least one of the electrodes is formed by associating a pattern, which does not entirely cover the surface of the substrate considered, and a conducting layer which covers the surface of the substrate considered, the conductivity of the material of the layer being lower than that of the material of the pattern.
Claims10
A reflecting cell comprising:
- a first substrate and a second substrate facing each other;
- a first electrode in direct contact with the first substrate and configured to be connected to a voltage source;
- a second electrode in direct contact with the second substrate and configured to be connected to the voltage source, the second electrode comprising:
- a pattern that is in direct contact with the second substrate and does not entirely cover a surface of the second substrate;
- and
- a conducting layer that covers the surface of the second substrate and the pattern, a conductivity of a material of the conducting layer being lower than a conductivity of a material of the pattern;
- and
- a volume that is delimited between and separating the first substrate and second substrate, the volume being filled with a bistable liquid crystal-type material with a threshold field.
Dependencies are inferred from the claim text.