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Slot die coating is a cost‐effective, scalable process for applying continuous organic layers in OLED displays. Uniform submicron coatings can be obtained on patterned OLED backplanes from low viscosity fluids. Coating and drying defects can be reduced by adjusting fluid properties, e.g., surface tension, viscosity and concentration.

The solution processibility of polymer OLED materials allows for the development of a full color display by inkjet printing RGB subpixels. We report on the development of a two‐inch diagonal (80 dpi) passive matrix display using multi‐nozzle inkjet tools. Both the aqueous PEDOT buffer layer and organic solvent‐based PLED inks were deposited by inkjet printing. This paper will discuss some of the technical issues surrounding inkjet printing OLED displays. Images of the all‐print passive matrix PLED display are presented.

A plastic display will offer light weight construction, durability, and the potential for flexible product design. Key to achieving these goals is the design of the substrate. This paper will discuss the specifications of a plastic substrate for OLEDs, the development of a substrate that meets the processing requirements, and the results of device testing.

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