Method for producing a bistable display device with low-voltage microcontroller
AssigneeThales Dis France SAS
InventorStephane TOUVET
Life of this patent
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Abstract
The invention more particularly relates to a method and device for controlling a segmented electrophoretic display. Such displays, preferably covered by the invention, comprise a layer (or a film) of microcapsules containing colored particles suspended in a fluid or a gas, the same layer being sandwiched between two electrodes: at least one first electrode having the shape of the segment to be displayed a second transparent electrode made by a conductive layer of indium tin oxide (ITO) for example. Alternative electrodes based on a thin film of carbon nanostructures, silver or copper wires can also be used.
Claims11
A method for producing a segmented electrophoretic display device comprising a bistable display operating at predetermined opposing voltages and an electronic circuit with a microcontroller for controlling the display according to a control programme, comprising the following steps:
- supplying said microcontroller, which is (i) different from a specific display controller for a bistable display, and (ii) configured to deliver voltages on input/output ports, lower in absolute value than the predetermined voltages, and
- compensating the voltages delivered by the microcontroller with at least one compensation voltage to at least reach said predetermined opposing voltages.
A segmented electrophoretic display device comprising
- a bistable display operating at predetermined opposing voltages, and
- an electronic circuit with a microcontroller for controlling the display according to a control programme, the electronic comprising:
- said microcontroller, which is (i) different from a specific display controller for a bistable display, and (ii) configured to deliver voltages on input/output ports, lower in absolute value than the predetermined voltages, and
- a compensation voltage generator configured to compensate said voltages delivered by the microcontroller and to reach at least said predetermined opposing voltages.
Dependencies are inferred from the claim text.