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Display show elevates importance of green technologies

Posted: 27 May 2008 ?? ?Print Version ?Bookmark and Share

Keywords:SID? technologies green? display?

Along with a number of display industry firsts at last week's Society for Information Display SID) conference, manufacturers acknowledged the need to incorporate green technologies and production processes.

Among the firsts:

  • Panasonic showed the world's largest high-definition plasma display at 150 inches.

  • LG Displays described a roll-to-roll printing process for TFT LCDs.

  • Royal Philips detailed a novel design for full-color e-paper.

  • Sony showed a newspaper on a wide-angle projection display.

  • PureDepth outlined multilayered LCDs for creating 3D effects.

    But speakers stressed environmental issues. "We need to apply a long-term environmental commitment within the TFT-LCD industry, and have companies develop best practices that improve both the bottom line and the environmental footprint," said Paul Peng, senior VP and general manager at AU Optronics Corp.

    AU Optronics has launched a "Green Solutions" initiative that has so far yielded eco-friendly LCD TV technology with energy savings by optimizing a backlight design. The company's latest 46-inch LCD TV panel reduces power consumption by up to 50 percent while retaining 500 nits of brightness with a 5,000:1 contrast ratio.

    The LCD TV Association also rolled out a GreenTV logo program. Chairman Bruce Berkoff said the association wants to "help focus LCD TV manufacturers and brands on reducing the power consumption of LCD TVs and raising consumer awareness about this issue."

    The groups is working with TV vendors to promote the use of ambient light sensors that can automatically lower set brightness in a dark room by decreasing power to the backlight. "This may reduce power consumption by at least 30 percent," Berkoff said.

    Sony's Yoshito Shiraishi said it new OLED TV is eco-friendly. Sony's XEL-1 OLED "consumes 60 percent less power than comparable technologies like LCD and PDP in flat panel TVs," Shiraishi claimed.

    Mary Lou Jepsen, founder of Pixel Qi Corp., said her company has focused on developing low-energy, low-cost portable devices for the developing world. In a keynote, Jepsen displays will play a key role in the initial design of portable devices. Jepsen also has founded Pixel Qi, a startup focusing on new displays that integrate touch screens and a wireless capability: "We started with two big ideas: a holistic approach and a new architecture where the screen is basically an ASIC," she said.

    "Portable electronics is migrating to the display, with embedded electronics eventually right in the display glass itself," said Jepsen. "The result is that where the average notebook consumes 20 to 40W, [while the company's XO laptop] consumes 2 to 4W."

    Other display makers stressed green technologies at SID. For example, 3M showed optical film that lowers LCD energy consumption by 30 percent. It also showcased a 60W, 32-inch LCD TV, and a Lenovo 19-inch wide 20W monitor that uses only two CCFL bulbs, each optimized with Vikuiti brightness enhancement films.

    Leading display glass provider Corning described its Eagle XG glass substrates that use no heavy metals or halides.

    Qualcomm's Mirasol displays save power by using MEMS-based screens that require no back light and actuating mirrors that reflect ambient light. Unipixel reported progress on its TMOS architecture that it claims is 10 times more optically efficient than LCDs. The company plans to license multiple LCD manufacturers in 2009. There appears to be ample opportunity for display makers to grow in the more than $107 billion display market, that it is projected to grow to more than $128 billion by 2010.

    - Nicolas Mokhoff
    EE Times

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