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DuPont breakthrough could mean bigger OLED TVs that don’t cost the earth

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May 17, 2010

LG's 15-inch OLED TV could soon get some more affordable bigger brothers

LG's 15-inch OLED TV could soon get some more affordable bigger brothers

The prospect of more affordable large screen OLED TVs has taken another step towards becoming reality with the announcement by DuPont that it has developed a manufacturing process that can be used to print large, high-performance OLED TVs cost effectively. The announcement could see OLED TVs become more widespread and affordable than the pint-sized and prohibitively-priced offerings that we have been restricted to until now.

OLEDs have attracted much attention as the next big thing in display technology with their ability to provide high contrast and bright displays with high response times and wide viewing angles while remaining extremely thin and energy efficient. Because they don’t rely on backlighting they eliminate the need for many of the LCD components, such as backlights and color filters.

Until now, consumer products sporting OLED displays have been limited to mobile devices such as cell phones or small screen TVs like the Sony’s 11-inch XEL-1 and LG’s EL9500 which, at 15 inches, is the largest OLED TV on the market. Such products rely on a technique called shadow-mask evaporation to pattern the light-emitting organic molecules that make up the pixels on these displays, which is expensive and limited to small-scale displays.

DuPont says that using its proprietary DuPont Gen 3 solution OLED materials will enable the manufacture of larger screen TVs as it allows larger OLEDs to be printed at cost-effective volumes while delivering the performance and lifetime that has so many people excited about the new technology.

“OLED displays in portable devices are available in the market today, but the current high cost of manufacturing with evaporated materials has limited market adoption and constrained OLED manufacturing for larger size displays,” said David Miller, president – DuPont Electronics & Communications. “Now, with DuPont printed OLED materials and process technology, fabrication costs can be significantly reduced, and manufacturing can be scaled to accommodate TV-size displays.”

The new process DuPont developed along with Dainippon Screen uses a multi-nozzle printer that works like a garden hose to deposit inks that contain active molecules that are insoluble in adjacent layers. It prints the ink in a continuous stream, rather than droplets, and moves over a surface at rates of 4-5m per second while patterning a display.

There have also been concerns about the longevity of OLED materials, but DuPont says its red, green and blue OLED materials can produce displays that can be operational for eight hours a day and last 15 years - surely long enough to survive until the next, next big thing in display technology hits the shelves.

Via Technology Review

About the Author
Darren Quick Darren's love of technology started in primary school with a Nintendo Game & Watch Donkey Kong (still functioning) and a Commodore VIC 20 computer (not still functioning). In high school he upgraded to a 286 PC, and he's been following Moore's law ever since. This love of technology continued through a number of university courses and crappy jobs until 2008, when his interests found a home at Gizmag.   All articles by Darren Quick
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6 Comments

I've been preaching OLED displays for a long time since 2003 & it has been the main reason why I wouldn't buy a large LED or Plasma. In 2005 they stabalized the materials to last 10 years and now they have finally mangaed to implement the same materials in a mass manufacturing process with prototypes that no doubt are being tested. Next step production and taking over the market.

Matt Fletcher
18th May, 2010 @ 08:23 am PDT

Good stuff.

But they may be late to the game. The LCD tv's I see at the stores now are amazing and cheap.....

PrometheusGoneWild.com
18th May, 2010 @ 08:45 am PDT

I want an OLED printer for home use. Print my own OLED displays or at least self-illuminating signs and photos.

Facebook User
18th May, 2010 @ 09:08 pm PDT

i don't know if i read correctly but i like the use of oled but having an 8 hour usage cap may hinder its market to mainstream.

Will
19th May, 2010 @ 01:01 am PDT

I believe the reference to 8 hours a day was just meant to show that if you averaged 8 hours a day the set should last 15 years; not that you are restricted to 8 hours a day.

drumalis
19th May, 2010 @ 11:16 am PDT

This is an impressive advance, truly, but it may not speed commericalization as much as the industry would like. Another major factor in the creation and performance of OLED displays is oxidation of the phosphors. This is why many OLED packages include a dessicant to absorb any moisture that leaks in. Until the packaging can be made 100% impermeable (or a very, very high percentage) aging and color drift of the phosphors will be a big issue.

Alix Paultre
20th May, 2010 @ 06:37 am PDT
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