Matthew Stainer

39.4: Development of Full Color Passive PLED Displays by Inkjet Printing

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.

63.3: Multinozzle Printing: A Cost‐Effective Process for OLED Display Fabrication

Cost-effective and scalable patterning of OLED materials remains a key challenge in order for OLED displays to achieve widespread FPD market penetration. We will review progress on multinozzle jet patterning of small-molecule emissive layer materials using a Gen. 4 scale printer. Periodic luminance non-uniformity appears as stitching/swath marks and present a challenge for transitioning this technology from a single to multinozzle printer. Thickness non-uniformity and/or pass effects, present under certain circumstances, can lead to stitching. We will present solutions to stitching and discuss full color printing methods and TACT for the multinozzle printer.

P-78: Measurement Methods for Solution-Coated AMOLED Display Uniformity

DuPont Displays has developed a full set of high performance materials and solution processing technology to address the high cost of manufacturing AMOLEDs. Using a wide variety of custom modeling and analytical approaches we have developed short and long range film thickness control and uniformity which is commercially viable at large glass sizes. In this paper we describe some of the measurement methods we developed, and results measured.

Active-matrix polymer displays made with electroluminescent polymers

Active-matrix organic/polyeric light emitting displays (AMOLEDs/AMPLEDs) are of great potentials for high information content display applications. They offer high brightness, fast response time, high image quality (high contrast, high gray levels and small pixel pitch size) and low power consumption. AMPLEDs are ideal for portable electronic devices such as web-phones, personal data assistants, GPS and handhold computers. AMPLEDs are especially suitable for motion picture applications. Since the image pixels consume power only when they are turned on, and only consume the power necessary for their corresponding brightness, video displays made with AMOLED/AMPLED reduce power consumption and extend display lifetime considerably. Motion picture applications also minimize image retention and optimize display homogeneity. In this presentation, we discuss our recent progress on AMPLEDs and compare their performance with that of AMLCD.