Patent ID: 8222061

Claim:
A process for fabricating a semiconductor quantum dot layer on a substrate, the semiconductor quantum dot layer being an emissive layer of a multi-color display, the process comprising: providing a liquid precursor including semiconductor quantum dots dispersed in a liquid carrier; generating a mist of droplets of the liquid precursor, the mist of droplets comprising droplets each including a suspension of one or more of the semiconductor quantum dots in the liquid carrier; directing the mist of droplets towards the substrate, so as to form a liquid precursor film on the substrate; using a shadow mask to pattern the liquid precursor film; and removing the liquid carrier from the patterned liquid precursor film so as to form the semiconductor quantum dot layer on the substrate, the semiconductor quantum dot layer being patterned by the shadow mask to form the emissive layer of the multi-color display, the multi-color display being a QD-LED (quantum dot light emitting diode) display.