by Michael A. Fury, Techcet Group
July 21, 2011 – The third and final day of the San Francisco Organic Microelectronics & Optoelectronics Workshop VII was attended almost as well as Day 1, but sport coats and neckties gave way to jeans and sneakers.
Daniel Lecloux of DuPont gave us an update on solution processing for OLED display and lighting applications. Solution processing is critical to the economic viability of high volume OLED manufacturing. High-speed printing is not a term applied lightly here — using DNS equipment, the print heads move across the glass at 2-5 m/sec, with accelerations as high as 10G. The manufacturing system technology is scalable beyond Gen 4. At the moment, the ITO, aluminum, and electron transport layers (ETL) are vapor deposited; the remainder are solution printed, and a printed ETL is now being qualified. The shortest pixel life is for blue at 30,000 hours, with red slightly better and green ~2