Conductive ink
First Claim
1. A method of making electrically conductive transparent ink comprising providing a transparent conductive rigid film;
- transforming said electrically conductive transparent film into a plurality of electrically conductive transparent flakes;
mixing said electrically conductive transparent flakes with a transparent ink carrier material.
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Accused Products
Abstract
Transparent conductive inks are provided. The conductive ink generally comprises flakes of electrically conductive material mixed with an ink carrier material. This invention shows that by making electrically conductive materials into pre-annealed flat flakes or platelets and mixing them in a suitable fluid, the prior art problems are solved, making it possible for electrically conductive inks to be conveniently used for general purpose applications exploiting their remarkable conductive properties. This is an electrically conductive ink, which is applied at room temperature, and no further annealing or treatment by the user is needed, since the conductive platelets are already annealed.
38 Citations
21 Claims
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1. A method of making electrically conductive transparent ink comprising
providing a transparent conductive rigid film; -
transforming said electrically conductive transparent film into a plurality of electrically conductive transparent flakes;
mixing said electrically conductive transparent flakes with a transparent ink carrier material. - View Dependent Claims (2, 3, 4)
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5. A transparent conductive ink comprising:
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transparent conductive flakes; and
transparent ink carrier material.
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6. A substantially transparent conductive ink comprising:
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substantially transparent conductive flakes; and
substantially transparent ink carrier material.
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7. Apparatus for producing conductive platelets comprising:
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a container and a means for producing a conductive precursor material;
a film application device;
a first substrate coated by said film application device with a film of said conductive precursor material;
an annealing apparatus to anneal the conductive precursor material into the desired electrical resistivity;
a drying and cooling means for producing a conductive film;
a second substrate coated with an adhesive by an adhesive application device;
said adhesive, after application to said second substrate, is dried by a drying apparatus;
a device for transferring conductive film from first substrate onto adhesive coated second substrate;
a means for embrittling said conductive film and said adhesive;
a means for breaking into small platelets and removing the brittle conductive film and adhesive from second substrate;
a means for separating the conductive platelets from the adhesive; and
a means for drying the conductive platelets, and breaking them further into smaller platelets. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. Apparatus for producing conductive ink comprising:
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a continuously moving substrate;
a means for coating said substrate with a conductive film;
a means for removing the conductive film in the form of small conductive platelets; and
a means for mixing a suitable host material with said conductive platelets producing the final conductive ink product. - View Dependent Claims (15, 16)
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17. A process for producing conductive platelets comprising the steps of:
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a. coating a first substrate with conductive precursor material, b. treating said conductive precursor material to provide a conductive film of uniform thickness;
c. transferring said conductive film to a second substrate, said second substrate having an adhesive coating on a surface thereof forming a conductive film-adhesive coating structure, d. breaking said conductive film and said adhesive coating structure into adhesive coated platelets of a selected size, e. separating said adhesive coating from said adhesive coated platelets by means of a solvent, and, f. drying said platelets. - View Dependent Claims (18, 19)
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20. A process for producing conductive platelets comprising the steps of:
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a. coating a first substrate with conductive precursor material, b. treating said conductive precursor material to provide a conductive film of uniform thickness;
c. transferring said conductive film to a second substrate, said second substrate having an adhesive coating on a surface thereof forming a conductive film-adhesive coating structure, d. shaping at least said conductive film into adhesive coated platelets of a selected size, e. separating said adhesive coating from said adhesive coated platelets by means of a solvent, and, f. drying said platelets. - View Dependent Claims (21)
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Specification