Tunable coupled fluorescence display devices

Abstract

An example electrophoretic luminescent device includes: an outer substrate and an inner substrate, one of which is a waveguide material, or includes a waveguide layer; a light source, the light from which is coupled to the waveguide material or waveguide layer; and at least one tunable fluorescent layer comprising: a driven electrode and a reference electrode, the driven electrode and the reference electrode disposed in a spaced apart relationship between the inner substrate and the outer substrate; an electrophoretic media, the electrophoretic media comprising a fluorescent charged nanoparticle, oppositely charged polymers or nanoparticles to balance the charge, the fluorescent charged nanoparticles inducible to fluoresce when they are within the evanescent field of the waveguide; and a controller coupled to the driven electrode, the controller to drive the driven electrode to induce a voltage difference to change the electromagnetic field applied to the electrophoretic media.

Dependencies are inferred from the claim text.