METHOD AND APPARATUS FOR DEPOSITING MATERIAL FOR AN ELECTRONIC DEVICE

摘要

This invention relates to the deposition of material for electronic devices, particularly or molecular electronic devices such as organic light emitting diodes, by an ink jet-type process. A method of depositing material for an electronic device onto a substrate (600) in a pattern comprising a plurality of pixels (602) is described. The method employs a printer having a print head (222) with a plurality of substantially linearly arranged orifices (227) for ejecting droplets of said material dissolved in a solvent onto said substrate, a first direction being defined substantially parallel to said substantially linearly arranged orifices. The method comprises moving one of said print head and said substrate relative to the other in a second direction (604) sufficiently close to said first direction that the majority of said orifices pass over a single said pixel in turn; ejecting droplets of material from orifices of said majority of orifices as the orifices pass over the said pixel; and repeating said moving and ejecting to build up said pattern.