New DuPont Inks May Help Make OLED Products Affordable
Cost of goods is usually one of the biggest problems in getting high-tech products to the marketplace. This is true even when there’s an obvious energy efficiency or quality benefit, such as with OLED televisions. A new ink printing process form DuPont, however, may smooth OLED technology’s path to market.
OLED displays are expensive to manufacture and, the larger the display, the greater the cost. Even though small compared to most TV display standards, a 15” OLED television is priced about $2700. This is far more than a comparably sized LCD model.
OLEDs have traditionally been produced using high-cost vacuum deposition of organic materials on layers of film. Newer OLED technology uses inkjet printers to spray the material onto substrates in the same way a printer sprays ink onto paper. One challenge to this process, though, has been developing non-bleeding inks with the needed electrical properties.
DuPont’s system uses inks that are mutually insoluble. Additionally, the inks are applied with a multi-nozzle printer made by Dainippon Screen that is effective in properly layering the inks to ensure performance.
OLED products still have a long way to go before they’re as common as LCDs. DuPont’s invention, though, is a big step forward in the right direction.
image credit: Dupont