Flexible and printable electrooptic devices
First Claim
Patent Images
1. An electrochromic (EC) device comprises a pair of conducting electrodes and an electrolyte material disposed between the pair of conducting electrodes,(a) one of the said electrodes is transparent;
- (b) the said device comprises of redox material which is a colorless or a faintly colored monomer.
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Abstract
This invention discloses how EC devices can be fabricated as tags or labels; and further the materials used, device structures and how these can be processed by printing technologies. In addition, systems using displays of such EC devices and their integration with other components are described for forming labels and tags, etc, that may be actuated wirelessly or powered with low voltage and low capacity batteries.
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Citations
83 Claims
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1. An electrochromic (EC) device comprises a pair of conducting electrodes and an electrolyte material disposed between the pair of conducting electrodes,
(a) one of the said electrodes is transparent; (b) the said device comprises of redox material which is a colorless or a faintly colored monomer. - View Dependent Claims (2, 3, 4, 6)
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5. (canceled)
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7-9. -9. (canceled)
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10. A printed electrochromic (EC) device comprising an electrolyte and a pair of conducting electrodes for use as a display or an indicator, wherein the electric potential applied to activate the device causes a color change by deposition of a metal layer at the cathode and the said color change is irreversible.
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11-19. -19. (canceled)
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20. A tag or a label formed using a substrate which is flexible and opaque with front and back surfaces, the said tag or label comprising a printed electrooptic display;
- and electronics to power the said display the said electronics further comprising of a radiofrequency system and an associated antenna, wherein the display is located on the front side of the said substrate and the antenna is located on the back side of the said substrate.
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21-26. -26. (canceled)
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27. A process for producing a flexible electrooptic tag or label comprising a first flexible substrate accommodating an electrooptic display and a radiofrequency activation system, wherein the radiofrequency activation system comprises at least of electronics module and an antenna, and the process comprises of the following;
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(a) printing or forming conductive lines on the said first substrate that connect the display and the radiofrequency components; (b) forming the display on the first flexible substrate;
or pre-forming the display on a second flexible substrate, and assembling the said display on the first flexible substrate;(c) forming an antenna onto the said first substrate, or forming an antenna onto a third flexible substrate, and assembling the said antenna on the said first substrate; (d) pre-forming the electronic module on a fourth flexible substrate and assembling the said electronic module on the said first substrate. - View Dependent Claims (28, 29, 30)
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31-60. -60. (canceled)
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61. A process for forming a solid electrolyte layer by printing of an electrolyte formulation, wherein the formulation in addition to the electrolytic components comprises a either first polymer and a first solvent, or a monomer and an optional second solvent and an optional second polymer;
- wherein the solidification of the printed layer is caused by (a) removal of the first solvent or removal of the second solvent or the polymerization of the monomer;
(b) with simultaneous phase separation of at least one of the said first polymer, said second polymer and the polymer formed by the polymerization of the said monomer. - View Dependent Claims (62, 63)
- wherein the solidification of the printed layer is caused by (a) removal of the first solvent or removal of the second solvent or the polymerization of the monomer;
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64-66. -66. (canceled)
- 69. A manufacturing process for an EC device that comprises first and second electrodes layers, a substrate and an electrolyte layer, wherein (a) the said electrolyte layer is located between two said electrodes, (b) the first electrode is deposited on a substrate, and (c) the said manufacturing process comprises of a deposition of the electrolyte layer by a printing process touching the top surface of the first electrode, followed by sequential deposition by a printing process of the second electrode touching the top surface of the said electrolyte layer.
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70. (canceled)
- 78. A flexible EC device that comprises of at least two electrodes, and at least one electrolyte layer, wherein at least the said electrolyte layer and at least one of the other electrode layers comprise of polymers that have similar mechanical properties.
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81. An electrooptic device used in a display application for a tag or a label, wherein the said device comprises of a plastic substrate, an electrochromic layer, an electrode layer and an optional encapsulation layer, wherein any of the said layers comprise of a biodegradeable material.
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82. A flexible electronic tag or a label which comprise printed electronic components on a substrate, wherein the said substrate is biodegradable material.
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83-88. -88. (canceled)
Specification