Conductive polymer layer articles and method
First Claim
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1. A touch screen comprising a first conductive layer and a second conductive layers separated by a gap, wherein at least one of the conductive layers comprises a conductive polymer and nonconductive particles, and wherein the nonconductive particles do not provide electrical isolation of the first conductive layer from the second conductive layer.
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Abstract
The present invention relates to conductive layers, conductive (e.g. sheet or film) material, methods of making conductive layers, and articles such as touch screens.
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Citations
20 Claims
- 1. A touch screen comprising a first conductive layer and a second conductive layers separated by a gap, wherein at least one of the conductive layers comprises a conductive polymer and nonconductive particles, and wherein the nonconductive particles do not provide electrical isolation of the first conductive layer from the second conductive layer.
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2. The touch screen of claim 2 wherein the conductive polymer is dispersed in a polymeric binder matrix.
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16. A conductive sheet comprising
a conductive layer disposed on a substrate, wherein the conductive layer comprises conductive polymer and nonconductive particles having a mean particle size ranging from about 0.2 micrometers to 10 micrometers, and wherein the nonconductive particles do not provide electrical isolation of the conductive layer.
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19. A method of making a conductive sheet comprising:
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providing a substrate;
providing a composition comprising a mixture of polymeric binder, conductive polymer and nonconductive particles; and
disposing the composition onto the substrate forming a conductive layer wherein the nonconductive particles do not provide electrical isolation of the conductive layer.
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Specification