Printing OLED displays: has their time finally come? Asks IDTechEx: Page 5 of 5

February 25, 2019 //By Dr Khasha Ghaffarzadeh
Printing OLED displays: has their time finally come? Asks IDTechEx
Solution processed light emitting organic materials were demonstrated in 1989 with a tiny 0.1 EQE (external quantum efficiency). Since then there has been tremendous progress on material synthesis/production as well as on display processing. However, thus far, commercialization has remained elusive, but a page may be about to turn.

In general, printing can no longer be dismissed as immature or futuristic. Material-side progress has eliminated or substantially narrowed the EQE penalty that traditionally would have to be paid when adopting printed materials. Steady long-term progress on the processing-side is also enabling commercial production.
Of course, there is much further progress to accomplish. The process yield and TACT will need to be further improved. The dimensions of the commercially printed OLEDs displays will need to be enlarged from the monitor to the TV range. The lifetime of solution OLEDs will need to be further extended especially if the end product is to have an extend lifecycle. Printing resolution will need to become finer.
These ongoing development trends are however often incremental in nature and are present in almost all display technologies. The important point is that printed OLEDs have already broken through enough technical barriers to demonstrate their viability. As such, printed OLEDs have becoming an exciting topic. We think this is a space to closely watch in the coming years.

 

About the author:

Dr Khasha Ghaffarzadeh is Research Director at IDTechEx - www.IDTechEx.com


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