Back to results
US 6,724,141 B2Granted
Particular type of a thin layer inorganic light emitting device
AssigneeAgfa-Gevaert
InventorHieronymus Andriessen
Life of this patent
Estimating the term…
Abstract
A Thin Layer Inorganic Light Emitting device is disclosed comprising a substrate, a first electrode, a coated layer comprising substantially undoped zinc sulfide nanoparticles, and a second electrode. On applying a voltage between the two electrodes the device emits light with an emission maximum of electroluminescence at a wavelength above 450 nm.
Claims18
A Thin Layer Inorganic Light Emitting Device comprising, in order,
- a transparent or semi-transparent substrate,
- a first electrode,
- a coated layer comprising zinc sulfide nanoparticles,
- a second electrode, with the proviso that at least one of said first and second electrodes is semi-transparent,
- characterized in, that (a) said zinc sulfide nanoparticles substantially contain no metal impurities, and (b) the device is capable of emitting light in response to a direct current caused by applying a voltage between said first and second electrode, with an emission maximum of electroluminescence at a wavelength above 450 nm.
2 more elements
Dependencies are inferred from the claim text.