Inkjet Technology for Functional Printing

© Fraunhofer IAP
Printed QD-LEDs.

Fraunhofer IAP offers the idevelopment of inks and processes for a broad range of applications especially for displays, touch sensors and medical applications.

It is a digital printing technology and enables quick change of layout and designs. As such, also some home-printers make use of piezo instead of heating elements. Inkjet printing is contactless and can be used on almost any substrate, even on sticky or viscous surface coatings. Droplets as small as 1 picoliter are ejected from nozzle chambers inside multi-nozzle printheads by mechanical actuation. The specific movement of a piezo element in every nozzle chamber (the waveform) brings the ink into oscillation. The droplet size is determined by the nozzle orifice. 

There is a huge interest in solution-processing of Organic Light Emitting Diodes and Quantum Dot-LED devices for display applications by inkjet printing. Here the advantages are scalability to larger areas, the high degree of possible individualization and savings in materials compared to evaporation technologies. At Fraunhofer IAP, we have experience in inkjet printing of Organic Light Emitting Diodes and Quantum Dot-LED devices and offer process development.




Fraunhofer IAP, Dr. Manuel Gensler,, 0331 568 1913