2020-07-20

UCSB Researchers Creates High Efficiency InGaN Blue Micro LED Through MOCVD Advancement

One critical issue of Micro LEDs is that their luminous efficiency decrease as their dimension shrink, leading to increasing problems in inspection and repair. Technology developers thus try to improve Micro LED efficiency at the phase of epitaxy wafer production. A group of researchers from UCSB, including Nobel winner Shuji Nakamura, recently published a paper describing the method of fabricating high performance InGaN Micro LED with epitaxial tunnel junctions (TJs Micro LEDs). Published in Optics Express, the paper, titled “Size-independent Low...
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2020-06-15

Phosphor-free White LEDs for More Efficient Backlight Applications Developed by UCSB

A new LED manufacture method which does not require phosphor to make white semipolar LED was published by a research team of UCSB with Shuji Nakamura, Nobel winner and LED pioneer, as a co-author. The result was published in Optics Express. White light emitting LEDs are usually made from blue LEDs combining yellow phosphor. But phosphor converted white LEDs usually suffer energy loss and reduced thermal stability. Phosphor-free LEDs, however, are rather difficult to fabricate but the UCSB team proposed an easier method to achieve efficient and polari...
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2020-06-11

UCSB Team Makes LED Light Shine Like Lasers with Advanced Metasurface Design

UC Santa Barbara researchers continue to push the boundaries of LED design a little further with a new method that could pave the way toward more efficient and versatile LED display and lighting technology. UCSB electrical and computer engineering professor Jonathan Schuller and collaborators describe this new approach, which could allow a wide variety of LED devices — from virtual reality headsets to automotive lighting — to become more sophisticated and sleeker at the same time. (Image: UCSB) Usually LEDs emit spontaneous light, comparing to...
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2019-12-30

University of California Files Patent Lawsuit against GE on LED Filament

University of California Santa Barbara (UCSB) continues to guard its patent of filament LED by filing a new patent lawsuit against General Electric (GE). According to a report covered by World Intellectual Property Review, the regents of UCSB filed a patent lawsuit at the US District Court for the Central District of California on December 20, claiming GE’s vintage LED bulbs products infringe three patents of UCSB. (Image: Pixabay) UCSB started to take legal action to secure its intellectual property since July, 2019, when the un...
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2019-12-03

LEDVANCE and UCSB Reach Agreement in Filament LED Patent

University of California (UC) Santa Barbara and LEDVANCE announce they have entered into a licensing agreement in UC Santa Barbara's patent enforcement campaign related to filament LED technology. The agreement authorizes LEDVANCE to manufacture and distribute the patented technology to lighting professionals, retailers and consumers. On July 30, 2019, UC Santa Barbara launched a patent enforcement campaign against five major retailers to promote the respect of its patent rights covering foundational filament LED technology. (Image: Pixabay...
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2019-11-20

Satco Files Lawsuit against UCSB and Claims No Infringement Occurred

Satco Products filed suit against The Regents of the University of California at Santa Barbara (UCSB) in the United States District Court of the Eastern District of New York to declare that the company does not infringe patents claimed by UCSB. In the press release of Satco, the company noted that it brought the legal action to seek a declaration that Satco Products, identified in the UCSB claim letters, do not infringe any of the ten patents asserted by UCSB. Satco also mentioned that it would aggressively defend its products and protect its custome...
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2015-05-12

[Update] DOE Invests $8.2M in Nine SSL R&D Projects

The U.S. Department of Energy announced on May 5, 2015 the competitive selection of nine projects for solid-state lighting (SSL), in response to the SSL R&D funding opportunity announcement (FOA) DE-FOA-0001171. The one- to two-year projects will focus on the areas of Core Technology Research, which involves the application of fundamental scientific concepts to SSL technology; Product Development, which involves using the knowledge gained from basic or applied research to develop or improve commercially viable SSL materials, devices, or systems; and U.S. Manufacturing, which involves accelerating SSL technology adoption through manufacturing innovations and improvements that reduce costs and enhance quality and consistency.
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2013-11-01

UC Santa Barbara Breakthrough Phosphor Research Improves SSL Efficiency

By determining simple guidelines, researchers at UC Santa Barbara's Solid State Lighting & Energy Center (SSLEC) have made it possible to optimize phosphors –– a key component in white LED lighting –– allowing for brighter, more efficient lights.
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Streetlights and high-bay fixtures require high flux and efficacy to meet the ever increasing demands for system efficiency and energy cost reduction for these applications. Today, LUXEON 5050 LEDs received an upgrade in both flux and efficacy... READ MORE

The recent outbreak of COVID-19 has prompted the large-scale search for practical solutions that can prevent the spread of the deadly virus — from researchers and scientists committed to finding a solution, to the manufacturers and consu... READ MORE