Patent ID: 8854714
Filing Date: 2014-10-07
Classification: G02B

Abstract:
1. A colored conductive fluid comprising: at least one polar solvent having (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%, and at least one colorant selected from a pigment and/or a dye, wherein the colored conductive fluid has an electrical conductivity from 0.1 μS/cm to 3,000 μS/cm and has no more than 500 total ppm of monatomic ions with ionic radii smaller than 2.0 Å and polyatomic ions with ionic radii smaller than 1.45 Å.