Electrochromic materials and displays
First Claim
1. A method for fabricating flexible electrochromic displays comprising:
- (a) forming electrodes in a pattern on a flexible substrate,(b) coating said electrodes with electrically conductive, essentially ionically isolative material in a layer comprising one or more areas wherein said ionically isolative layer comprises a transparent or translucent matrix having dispersed electroconductive particles comprising mineral particles coated with electrically conductive metal oxide and an electrochromic material, and(c) providing an interface by applying a layer of ionically conductive material, whereby when an electrical potential is applied across the interface, an electrochromic effect is generated.
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Abstract
Dispersions of electrically conductive particles useful for preparing electrically conductive, essentially ionically isolative composite layers having electrically conductive particles dispersed in a polymer matrix. Composite layers can be used in laminates for electrochromic displays where an ionically conductive layer is in contact with electrochromic material. Such displays comprise means for applying an electrical potential across the interface of the ionically conductive layer and the electrochromic material to generate an electrochromic effect at the interface. Electrochromic materials can be provided in the laminates as layers between the ionically conductive layer and the composite layer of electrically conductive particles dispersed in a polymer matrix. Alternatively, the electrochromic material can be incorporated in the conductive particles in the polymer matrix, e.g. as titanium dioxide coated with antimony tin oxide coated with polyaniline dispersed in an light transmitting polymer matrix. The materials of this invention allow for the high speed fabrication of flexible displays, e.g. by printing methods.
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Citations
2 Claims
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1. A method for fabricating flexible electrochromic displays comprising:
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(a) forming electrodes in a pattern on a flexible substrate, (b) coating said electrodes with electrically conductive, essentially ionically isolative material in a layer comprising one or more areas wherein said ionically isolative layer comprises a transparent or translucent matrix having dispersed electroconductive particles comprising mineral particles coated with electrically conductive metal oxide and an electrochromic material, and (c) providing an interface by applying a layer of ionically conductive material, whereby when an electrical potential is applied across the interface, an electrochromic effect is generated. - View Dependent Claims (2)
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Specification