Every year, The Wall Street Journal gives out awards for technology innovations. This year is their 10th year. With almost 600 innovations from around the world, the judges' pannel faced a difficult task to choose the first three place winners. The judges assessed the applications on three criteria:
—Does the innovation break with conventional ideas or processes in its field?
—Does it go beyond marginal improvements on something that already exists?
—Will it have a wide impact on future technology in its field or in other fields?
The gold prize winner is the Taiwan-based Industrial Technology Research Institute (ITRI). Their innovation was a flexible display screen for everyday use. "ITRI won the top prize in this year's Innovation Awards contest for a manufacturing technique that promises to clear the way for commercial development of high-quality displays on flexible materials.
Flexible displays are attractive for several reasons: They're lighter than glass displays, making it possible to build larger consumer devices, such as e-readers or tablet computers, that aren't too heavy. They can also be used in some novel applications, such as interactive newspapers that can be bent or rolled and be as portable as the paper-based versions."
"With a stable, viable and cost-effective flexible-display technology," says Barry H. Jaruzelski, an Innovation Awards judge and a partner at consulting firm Booz & Co., "the door is opened to a wide range of truly new applications in consumer electronics and device interfaces."
But producing flexible displays in commercial quantities has proved challenging. To understand why, and why ITRI's innovation has promise, requires a brief tutorial.
Making a flexible display as fully functional as the typical flat-panel computer screen requires layering thin-film transistors on a flexible substrate. Because the flexible material can curl or shift during this process, it's bonded temporarily to a rigid piece of glass. The completed flexible display then has to be detached from the glass without being damaged, which is difficult to do efficiently enough to make the displays on a commercial scale.
ITRI's solution—which it calls FlexUPD, for flexible universal panel for displays—is novel yet simple. It places a "debonding" layer of nonadhesive material between the flexible substrate and the glass. The substrate, which has an adhesive backing, is made slightly larger than the final flexible display and the debonding layer, so it stays steady on the glass. Once the transistors are layered on the substrate and enclosed, the display can be cut out from the excess substrate and easily lifted off the glass.
The idea for the debonding layer, says an ITRI spokeswoman, came from watching cooks prepare paper-thin Taiwanese pancakes, which can be easily peeled from a pan at high temperatures. Cheng-Chung Lee and Tzong-Ming Lee, ITRI division directors, are credited with the idea.
The technique, the institute says, can be used with a variety of displays, including current liquid-crystal-display, or LCD, screens and the next-generation displays made with organic light-emitting diodes, or OLEDs.
ITRI has demonstrated a prototype paper-thin display made with this process, and has licensed the technology to display maker AU Optronics Corp. of Taiwan. The first product using the technology, a flexible display for an e-reader, is planned for release by the end of the year, an ITRI spokeswoman says.
Other companies have demonstrated flexible-screen prototypes and plan to bring them to market using a different manufacturing technology. None, including ITRI's technology, have yet seen commercial success, but ITRI says its improvements make its entry more cost-effective than competing technologies. Also, it says, the technology is compatible with existing factories for fabricating displays, so it can be widely adopted by display makers.
Judges for the Innovation Awards, while noting that ITRI is still in the early stages of commercializing the technology, cited the possible benefits of flexible displays. "This looks like a simple and elegant solution to a manufacturing problem," says William Webb, director of technology resources for Ofcom in the U.K.
ITRI, a nonprofit organization, won an Innovation Award in 2009 for its FleXpeaker, a paper-thin loudspeaker system."
http://online.wsj.com/article/SB10001424052748703470904575500342513725972.html
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