Patent ID: 6737293
Filing Date: 2004-05-18
Classification: C01G,C09K,H01L,Y10T

Abstract:
A method for manufacturing a Thin Film Inorganic Light Emitting Diode device, said method comprising the following steps, in order:(1) preparing a nanoparticle dispersion of ZnS doped with a luminescent centre by precipitation from appropriate aqueous solutions comprising zinc ions, sulfide ions and dopant ions, (2) washing said dispersion of doped ZnS to remove non-precipitated ions, (3) coating onto a first conductive electrode said washed dispersion of doped ZnS, optionally after admixture with a binder, (4) applying on top of said coated layer resulting from step (3) a second conductive electrode, with the proviso that at least one of said first and second electrode is transparent.