COLORED CONDUCTIVE FLUIDS FOR ELECTROWETTING AND ELECTROFLUIDIC TECHNOLOGIES

COLORED CONDUCTIVE FLUIDS FOR ELECTROWETTING AND ELECTROFLUIDIC TECHNOLOGIES

Colored conductive fluids for electrowetting or electrofluidic devices, and the devices themselves, are disclosed. The colored conductive fluid includes a polar solvent and a colorant selected from a pigment and/or a dye. The polar solvent has (a) a dynamic viscosity of 0.1 cP to 1000 cP at 25° C.,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SCHWARTZ RUSSELL J, CHEVALLIOT STEPHANIE, MILARCIK APRIL, DHINDSA MANJEET, HEIKENFELD JASON, VILNER STANISLAV G, CLAPP LISA
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
CABLES
CONDUCTORS
ELECTRICITY
INSULATORS
MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES
NANOTECHNOLOGY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
PHYSICS
SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES
SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
TRANSPORTING
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Beschreibung
Zusammenfassung:Colored conductive fluids for electrowetting or electrofluidic devices, and the devices themselves, are disclosed. The colored conductive fluid includes a polar solvent and a colorant selected from a pigment and/or a dye. The polar solvent has (a) a dynamic viscosity of 0.1 cP to 1000 cP at 25° C., (b) a surface tension of 25 dynes/cm to 90 dynes/cm at 25° C., and (c) an electrowetting relative response of 20% to 80%. The colored conductive fluid itself can have an electrical conductivity from 0.1 μS/cm to 3,000 μS/cm and can have no greater than 500 total ppm of monatomic ions with ionic radii smaller than 2.0 and polyatomic ions with ionic radii smaller than 1.45 . The colored conductive fluid should not cause electrical breakdown of a dielectric in the device in which it is employed. An agent for controlling electrical conductivity can optionally be added to the colored conductive fluid.