Reid John Chesterfield

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.

OLED technology scalable for television: Solution process delivers printed lifetime

DuPont recently announced the achievement of record performance in printed organic light emitting diode (OLED) displays, sufficient to enable future adoption of OLED television. Printed devices have reliably achieved T50 luminance lifetimes of 29,000 (red), 110,000 (green) and 34,000 hours (blue) at typical television brightness.