|OLED Materials & Processing
OLED (organic LED) technology has great potential to become an established next generation display platform. Key advantages include no backlighting, faster video switching, higher contrast and potential for manufacturing via printing. From a materials science perspective the developments in polymer OLEDs, which are based on conductive polymers, has been of great interest in the past decade. But the current commercial technology is so-called small molecule OLEDs, which was invented by Kodak scientists in the 1980s. This technology has been manufactured via vacuum deposition on glass, similar to LCD, but there are very interesting recent developments in solution based processing that enables printing of small molecule OLED displays. The ultimate goal is to develop flexible, printable full color video displays; this requires the parallel development of thin film moisture barrier technology as well as printable TFT device technology. Starting in Q4 2007 there has been increasing momentum in commercial production mainly by Samsung, and there are also promising developments in large area displays with Sony starting to supply the first OLED television in early 2008. Another emerging area is OLED lighting where Universal Display Corporation announced a recent efficiency breakthrough based on its patented materials technology. In this newsletter we highlight recent developments in OLEDs relating to materials, encapsulation, manufacturing and novel applications.