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Patents: Blue and white LEDs
In the past several years, LED manufacturers have announced a wide range of patent licensing deals, but also continue to become embroiled in legal disputes. Updated May 2006. |
LED manufacturers increase production capacity
With its recent announcement that it will make huge investments in its production capacity, Cree has become the latest in a list of rival LED manufacturers that plan to expand. |
GE develops white organic LEDs for lighting
A DOE-funded project to develop white organic LEDs (OLEDs) for lighting applications was described in a talk at the Fourth International Conference on Solid-State Lighting by Anil Duggal of GE Global Research Center. |
Issues of color rendering and perception by the human eye
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New GELcore phosphors improve color-rendering index
For white LED lamps that use phosphor downconversion of blue or UV light, the development of new phosphors is a key requirement to enable improvements in color temperature and color rendering, and to open up new markets for LEDs. |
Fourth International Conference on Solid State Lighting
Among the highlights of the Fourth International Conference on Solid State Lighting were updates on government-sponsored programs in Japan and the US, and a report of white LEDs with a color rendering index approaching the theoretical maximum of 100. |
HB-LED market showed 47% growth in 2003, says Strategies Unlimited
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Asian HB-LED industry sees "phenomenal" growth in 2003
Mike Hatcher reports from the 2004 Strategies in Light conference on the spectacular growth in the HB-LED market in Taiwan, Korea and China. |
The case for LED headlamps
A large number of car manufacturers have experimented with the use of white LED headlights in their concept vehicles, although production models with LED headlights are not expected to hit the marketplace until 2006-2007. |
Cell phone developments drive HB-LED sales
Mike Hatcher reports from the 2004 Strategies in Light conference on the market for HB-LEDs in mobile phones. |
LED lighting: thermal management
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LED lighting: color variation
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LED lighting: metrics and standards
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LED lighting: challenges and benefits
Although there are many benefits associated with using LEDs for lighting applications, there are also many issues to resolve. |
Lighting community outlines challenges for LED industry
Lighting designers are eager to increase their adoption of LED technology, but are looking for device suppliers to remove some of the hurdles, writes Tim Whitaker. |
Intertech LEDs 2003 report: Backlights, airports and vehicles provide market impetus
As chip makers continue to improve the performance and reduce the cost of their products, new applications in areas such as airport lighting and car headlamps continue to emerge. Tim Whitaker reports from the Intertech LEDs 2003 conference. |
Osram Opto extends thin-film technology
Osram Opto Semiconductors has developed a new approach to increase extraction efficiency that does not rely on sidewall emission, and allows the luminance to be scaled with chip area. One result is the development of 618 nm devices with an efficacy of 98 lm/W. |
Cree pushes white LEDs to limit
Cree has developed white LEDs that produce 4.7 lm at 20 mA, and have an efficacy of 74 lm/W. |
LED lights for airports
A number of other applications for LEDs were discussed at the Intertech LEDs 2003 conference, one of the most exciting being airport lighting. |
LEDs continue push into automotive applications
LEDs are already established in some aspects of the automotive lighting market, while speakers at the Intertech LEDs 2003 conference described new applications including headlamps. |
Backlighting drives market growth in 2003
According to Jagdish Rebello of market research company iSuppli, the total LED chip market will reach $3.4 billion in 2003, compared with $3 billion in 2002. |
