Dec 032010

QLED displays promise better color reproduction, energy efficiency and cheaper manufacturing costs than OLED

For the past few years OLED has stolen most of the spotlight as the next generation technology set to outperform current plasma and LCD displays in terms of both energy efficiency and picture quality.

Although OLED is barely out of the blocks, QD Vision and LG Display have just announced a joint development agreement focusing on electroluminescent quantum dot LED (QLED) nanotechnology, which promises to sweep all display technologies before it, including OLED. QLED promises energy efficient displays that offer brighter, richer colors, can be printed on ultra-thin, transparent or flexible substrates and manufactured cheaply.

Way back in 2004 QD Vision took out first place in the International Nanotechnology Business Idea Competition with its idea to produce flat panel displays that use QLEDs to produce images. The prize pack consisting of US$50,000 cash, business plan writing assistance and additional business advisory services allowed the startup company to secure the intellectual property behind the QLED technology that was developed at MIT.

QD Vision’s QLED technology, which it should be stressed, is still in the development stage, will employ patterned thin films of quantum dots – a particle about one nanometer in size that has the display properties of a semiconductor – to create a direct-view, active matrix display.

The company says its current printable saturated QLEDs essentially match or exceed NTSC color standards for displays without the need for color filters. Also, because current OLED displays require lossy color filtering to achieve the same color performance, QLEDs ultimately offer a 30–40 percent luminance efficiency advantage over OLEDs at the same color point. QLEDs also have the potential to be more than twice as power efficient as OLEDs at the same color purity.

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