Showing posts with label LED backlight LCD. Show all posts
Showing posts with label LED backlight LCD. Show all posts

Monday, May 21, 2007

Researchers tout better, brighter LEDs

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A pair of researchers at UCLA's Henry Samueli School of Engineering and Applied Science seem to think they're well on their way to building a better LED -- one that's not only brighter than existing LEDs, but more energy efficient and less expensive to boot. According to Physorg, the team's biggest success so far is red phosphorescent LED (or PLED) that delivered a record-breaking 18 lumens per watt (compared to an average of 12 lumens per watt with current red LEDs). The key to that, it seems, was to simplify the LED as much as possible, which they did by adding a polymer powder and liquid mixture to a "previously top-secret material" developed by Canon. The resulting "paint-like product" was then used to coat a layer of glass, with a charge then added to get the whole thing going. From the sound of it, these new wonder LEDs should be making their way into consumer products sooner rather than later, with Canon (naturally) reportedly already having licensed the technology and the first commercial products expected in "about three years."

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Thursday, May 17, 2007

Samsung poised to introduce white LED-backlit displays

Posted May 14th 2007 4:04PM by Erik Hanson

Samsung LED LCD televisionSamsung believes that by 2010, 30% of all LCD televisions will include LED backlights instead of the conventional flourescent used in most sets now. What's different from the LED units we've seen before is that Samsung wants to use white LEDs, with single diodes custom-coated to produce the same backlight previously requiring combinations of red, green, and blue bulbs. Samsung recently invested in Intematix, which produces custom phosphor coatings for LED bulbs to create uniform color -- required in a television to faithfully reproduce colors. Until recently costs have been higher for LED backlight units, keeping them relegated to higher-end models. Samsung claims the single bulb process reduces costs by 40%, but time will tell whether white-only LEDs are truly better or cheaper than tri-color LEDs, or if they are just the next "Reveal lightbulb" marketing gimmick.

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