Philips improves inkjet-printing for large-screen polymer OLED displays

Scientists at Philips have designed and built a new high-precision inkjet printer for polymer Organic Light-Emitting Diode (OLED) displays. The fully automated system uses four multi-nozzle print heads on a single common stage to accurately print the required polymer OLED layers in air, which results in a simpler process with fewer process steps and higher accuracy. The inkjet printer can handle substrates of up to 24 inch, but can easily be scaled to large substrates, demonstrating the possibility to develop a low-cost solution for making large polymer OLED displays.