Patent ID: 8810882

Claim:
A display pixel comprising; a first polar fluid; a non-polar fluid; a first substrate; a second substrate arranged relative to the first substrate to define a hydrophobic channel containing the first polar fluid and the non-polar fluid, wherein at least one of the first polar fluid and the non-polar fluid is visible through at least one of the first substrate and the second substrate; a first electrode on the first substrate; a dielectric layer between the first electrode and the first polar fluid; a first Laplace barrier within the hydrophobic channel, the first Laplace barrier defining a fluid pathway open to movement of the first polar fluid within the hydrophobic channel; and a first voltage source electrically connected with the first electrode, the first voltage source configured to electrically bias the first electrode to cause the first polar fluid to move within the hydrophobic channel relative to the first Laplace barrier, wherein the first polar fluid is moved to a first position within the hydrophobic channel when the first electrode is biased by the first voltage source with a first voltage that is less than or equal to a threshold voltage to provide a first display state, and the first polar fluid moves from the first position to a second position within the hydrophobic channel when the first electrode is biased by the first voltage source with a second voltage that is greater than the threshold voltage to provide a second display state.