Self-powering display for labels and cards
AssigneeNtera Limited
InventorsMartin Moeller, Henrik Lindstrom, Michael Ryan, David Corr, Alain Briancon, Micheal Cassidy
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Abstract
A device is disclosed that combines a battery system with an electrochromic system by judicious selection of electrodes and the connection of the appropriate electrodes to generate internal as well as external current flows. This system allows the elimination of a battery component reducing cost and improving manufacturing yield by reduction of the number of parts and number of interconnections. However, the design can be further extended to the combination of a battery system with a sensing system.
Claims29
A device comprising:
- a first layer including at least one first electrode having a first material with a first redox potential;
- a second layer including at least one second electrode having a second material with a second redox potential, a metal oxide film, and a redox chromophore adsorbed to the metal oxide film;
- and
- a third layer including at least one third electrode having a third material with a third redox potential;
- the device further includes an electrolyte and the first, second, and third layers contact the electrolyte;
- a first switch electrically connecting the first and second layers;
- and a second switch electrically connecting the second and third layers;
- and
- the first redox potential is more negative than the second redox potential and the third redox potential is more positive than the second redox potential.
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A method of operating a self-powering device comprising:
- providing the device, the device including a first layer including at least one first electrode having a first material with a first redox potential;
- a second layer including at least one second electrode having a second material with a second redox potential, a metal oxide film, and a redox chromophore adsorbed to the metal oxide film;
- and
- a third layer including at least one third electrode having a third material with a third redox potential;
- the device further includes an electrolyte and the first, second, and third layers contact the electrolyte;
- a first switch electrically connecting the first and second layers;
- and a second switch electrically connecting the second and third layers;
- and
- the first redox potential is more negative than the second redox potential and the third redox potential is more positive than the second redox potential;
- the method further comprising, charging the display device by opening the first and second switches.
Dependencies are inferred from the claim text.