Japanese researchers Akinori Koukitu and Yoshinao Kumagai, who are professor and associate professor, respectively, at the Division of Applied Chemistry, the Tokyo University of Agriculture and Technology (TUAT), and researchers of Tokuyama Corp. , have made breakthroughs on a deep ultraviolet LED that has the world's highest levels of output characteristics. With a forward current of 150mA, its output and external quantum efficiency are 20mW and 3.0%, respectively. There were two problems in the development of the deep ultraviolet LED: developing a high...

Scientists from University of Georgia have made breakthroughs on creating an LED that emits a warm white light using a single light emitting material, or phosphor, with a single emitting center for illumination. One of the researchers on the project, Zhengwei Pan, an associate professor in the department of physics in the UGA Franklin College of Arts and Sciences and in the College of Engineering, said in a posting on the UGA website, “Our material achieves a warm color temperature while at the same time giving highly accurate color rendition, which is somethin...

Verbatim will launch a new range of LED products based on Seoul Semiconductor (SSC)’s ”nPola” technology. Since 2010, Verbatim has been introducing a growing portfolio of high performance LED lamps to the lighting market. To address market requirements for LED lamps that more closely approximate the characteristics of halogen lighting, Verbatim will launch a new range of LED products based on Seoul Semiconductor (SSC)’s ”nPola” technology. “nPola” utililizes gallium nitride (GaN) substrates from Verbatim&r...

A Japanese research team has announced on January 10 that it developed a new efficiently deep ultraviolet sterilization LED lamp, featuring small volume, electricity saving, environmentally and long lasting ,compared to traditional low pressure mercury lamp. Currently, low pressure mercury lamps are widely used in medical and food application. Because of the environmental harm caused by mercury, researchers are seeking for substitutes. Deep UV is an ultraviolet ray that has short wavelength with high efficient of killing bacteria. And the substrate crystallization has influ...

At CES 2013, Panasonic has exhibited a 56-inch 4k OLED display. The company applied its own printing process to the display and cooperated with Sony in the development of the display's oxide semiconductor. Panasonic President Kazuhiro Tsuga stressed the large size, vivid color and slimness of the display in a keynote speech, however, the company has not disclosed when to mass-produce the display or its expected price....

Jagged microscopic scales covering the surface of a firefly's light-emitting abdomen make an excellent light-extraction layer for LEDs, as researchers from Belgium, France, and Canada discovered. They then created an LED overlayer that increased light extraction by up to 55%.1, 2 The researchers hail from the University of Namur (Namur, Belgium); European Synchrotron Research Facility (Grenoble, France); Université Catholique de Louvain (Louvain-la-Neuve, Belgium); and Université de Sherbrooke (Québec, Canada). The researchers dete...

PhotonStar LED Group plc, continues to work with CSR plc (CSR) in the development of its Bluetooth Smart home lighting products.   The firms worked closely to create a joint LED lighting demonstration on the CSR booth at CES International 2013 in Las Vegas, showing how Bluetooth low energy wireless technology can enable smartphones, tablets and other connected devices to control systems such as lighting throughout the home. Photonstar’s existing LED lighting system is fully colour tuneable and dimmable, and the addition of CSR’s Bluet...

SemiLEDs proudly announces its power improvements in its EV-LED family allowing single-chip emitters to achieve over 130lm/W. SemiLEDs announced its recent improvements in both epitaxial quality and chip process to its EV- family of LED chips. These improvements allowed a 10% increase in blue chip brightness and 8% decrease in forward voltage (Vf) during mass production, enabling its clients to achieve over 130lm/W with cool white and 110lm/W with warm white. The measurements were taken at 350mA. With Enhanced Vertical (EV) technology, SemiLEDs was abl...

BluGlass has utilized its low temperature RPCVD process to develop p-type GaN, an essential material that make up the top layers of a nitride LED.   Preliminary testing has been carried out on the sample using a 0.5mm diameter size p-type indium contact. The light output was measured with a UV-detector positioned under the wafer calibrated at the wavelength of the light emission. At 20mA and 4.7V, the light output was 270µW (light emission at 458nm with a full width half maximum of 19nm) At 50mA and 5.5V, the light output was 1.23mW (light emission ...

Smart Home Labs has launched the RoboSmart wireless LED lighting system that enables smart lighting control via smartphone, tablet or computer over Bluetooth Smart wireless with customizable apps for both iOS and Android. And the new LED light bulb is available for pre-orders on the world’s largest open-funding platform IndieGoGo. The unique combination of energy efficient LED design and Bluetooth communications allows anyone the freedom to fully customize control of their home lighting, not previously possible with standard LED bulbs. Harnessing the ...

NASA's planning a test to replace fluorescent lighting panels in the ISS with a solid-state LED lighting module which produces blue, white, or reddish light depending on the time. It hopes that this change will serve as a counter-measure to the inevitable disruption of the body's circadian rhythm while in space — this would hopefully reduce insomnia, which can have a host of deleterious effects while in space. Sleep in space has long been a concern for NASA — back in 2001, a study showed that 50 percent of some Space Shuttle crews relied on medicat...

Lately, a US academic has made a breakthrough on a flicker-free, shatterproof, alternative light source for large-scale lighting applications. Dr David Carroll at Wake Forest University has utilized the technology based on Field-Induced Polymer Electroluminescent Technology (FIPEL) and emits a soft white light, to create the light source.       According to Dr Carroll, the light source is made from three layers of moldable, white-emitting polymer blended with nanomaterials that glow when stimulated to create bright, natural “white lig...

Infrared thin-film chip leaps to 72 percent efficiency The infrared chip prototype has achieved a new record with an efficiency of up to 72 percent. At 930 milliwatts from an operating current of 1 amp, its light output under laboratory conditions is 25 percent higher than that of the chips currently available on the market, which means that future infrared LEDs can be made even more energy-efficient. The efficiency was measured at room temperature and at a dc current up to 1 amp. With a wavelength of 850 nanometers the chip has been designed in particular for infrared illuminatio...

MagnaChip Semiconductor Corporation ("MagnaChip"), a Korea-based designer and manufacturer of analog and mixed-signal semiconductor products, today announced the launch of an advanced 4-channel LED backlight unit (BLU) driver IC (model:MAP3242) that features a 50% increase in driving power making it ideally suited for TV applications.

Seoul Semiconductor announced that it would be accelerating the sales of MJT(Multi Junction Technology) series, which uses Seoul’s integrated Acrich technology, on November 21. A big advantage of the MJT series is that its 5630 and 3528 packages offer LED lighting manufacturers easier production with the standard (module) size and enable lighting fixtures to deliver world-class performance up to 100 lumens per watt. Unlike the conventional method that requires complicated circuitry to connect multiple LED chips, the MJT series is designed to operate at va...

WEBENCH Schematic Export supports CAD platforms from Cadence, Mentor Graphics and Altium Texas Instruments Incorporated (TI) (NASDAQ: TXN) unveiled WEBENCH® Schematic Export, a new online tool that exports analog designs from TI’s WEBENCH Design Center to industry-leading computer-aided design (CAD) development platforms from Cadence Design Systems, Inc., Mentor Graphics and Altium. WEBENCH Schematic Export will be demonstrated in TI’s booth #420 in Hall A4, at the Electronica trade show in Munic...

Sumitomo Chemical Co Ltd showcased a light guide plate made with an ink-jet technology at FPD International 2012 from Oct 31 to Nov 2, 2012, in Yokohama, Japan. It is targeted at LCD panels using an LED backlight such as of TVs and monitors. The light guide plate was made by using an ink-jet technology to form a concave-convex pattern with an ultraviolet curable resin on the "Sumipex," Sumitomo Chemical's acrylic resin. The diameter of the pattern can be controlled between 30-70μm. Compared with light guide plates made by using an injection m...

iPad is used to control streetlights in London borough. After a successful pilot scheme, the London borough has created a ‘Smart Lights system’ deploying Philips CosmoPolis Outdoor Lighting products in conjunction with a Harvard LeafNut CMS system. The council will also install GE Ceramic Metal Halide StreetWise lamps. The project will take four years to complete and it is hoped the £3.25 million investment will save council taxpayers £420,000 per year from 2015/16 onwards. All of the borough’s 14,000 streetlights will be adapted to...

NGK Insulators, Ltd. of Japan has announced the development of high-quality GaN wafers to reduce defects and roughly double the luminous efficiency of green LEDs over previous models. NGK achieved this breakthrough by using a crystal growth technology that it has improved through a proprietary approach. The GaN wafers developed by NGK feature low defect density across the entire 2-inch diameter of the wafer surface and have a colorless transparency. NGK achieved this through proprietary improvements to liquid phase epitaxial technology for single crystal growth. ...

A group of South Korean scientists have collaborated to translate what they observed in fireflies over toward a better, less expensive, LED lens. Their work is essentially mimicking a bioluminescent organ for lighting applications Following the contemporary practice of investigating biological systems, the team attempted to copy the structure of a firefly's underbelly into work that may lead to more efficient and cheaper LED lighting. They wrote about a better anti-reflective lens for LED in their paper, "Biologically inspired LED lens from cuticular nanostruct...

Taiwan LED leading brand TESS today reveal brand new product – 12W 1000 lumens omni-directional LED Bulb, this remarkable product not only breakthrough the current technology barrier but also reflect the demand in lighting market, TESS proofs it great powerful research and development ability in LED solutions again. Core value of TESS R&D is to keep challenging technology barrier, to provide innovative LED products and to bring new concept of energy saving to next generation. This brand new omni-directional LED Bulb (12W CW-1000lm/12W WW-...

The world's largest LED chipset supplier has announced the launch of a 2200K colour chipset to meet the market demand for a warmer, golden light that can match the output of an incandescent lamp.   The 2200K XTE high power LED chip is the result of a co-development between CREE, the market-leading innovator of lighting-class LEDs, and high power LED light manufacturer, Aeon Lighting Technology (ALT).   The 2200K chipset has tackled one of the greatest challenges of LED design by achieving the preferred warm coloration, consistent with that ...

Vietnamese scientists are trying to create LED lamp products which have the light spectrum suitable with every kind of plant, which can help save electricity, churn out clean and off-season products. According to Dr Phan Hong Khoi, Managing Director of the high-efficiency public lighting project in Vietnam, LED is a special type of semiconductor diode which can generate a narrow spectrum, discrete light when excited. LED lamps can create different colors, depending on the semiconductor materials used and operating conditions. With LED lamps, scientists use two bea...

GreenWave Reality’s Connected Lighting Solution has made a dream that wirelessly influence light bulbs’ color, brightness with iPhone come true. People reside in Europe can begin to enjoy such luxuries, as GreenWave Reality’s Connected Lighting Solution combine energy star certified LED bulbs with home’s wireless network, allowing you to control your abode’s lights with the touch of a smartphone (or tablet). Unlike like LIFX version, customers won’t be able to change the color, but probably can influence their brightness, and t...

Rohm Co Ltd has showcased a planer LED lighting panel featuring LED packages with a high color rendering index as high as 98 at CEATEC JAPAN 2012 held from Oct 2 to 6, 2012. High color rendering index According to the firm, the panel was made by arranging LED packages on a plane surface and covering them with a light diffusion plate. It emits light from the entire surface of the panel like an OLED lighting panel. By using its fluorescent material technologies, Rohm realized a general color rendering index (Ra) as high as 98 and prevented the sulfurati...

Epistar and Azzurro have jointly made breakthroughs on developing GaN-on-silicon based LEDs utilising Epistar’s HB LED structures and Azzurro’s technology for 150mm GaN-on-silicon in just 4 months. The firms transferred Epistar’s existing LED structures built on sapphire to the GaN-on-silicon material system, marking GaN-on-silicon one step further towards implementation in mass production. GaN-on-silicon growth is often associated with many technological challenges. But the use of templates with unique strain‐engineering technology from A...

UK imaging technology developer Integration Technology Ltd (ITL) is consolidating its Continental Europe operations with the appointment of Achim Herzog to the role of European Business Development Manager. Southern Germany-based Herzog brings over a decade’s worth of experience in printing and UV curing to ITL. He joins from Atlantic Zeiser where he was product manager for the digital and security printing division and worked formerly in sales and strategic development for ITL strategic partner, IST METZ. Achim Herzog anticipates growing...

Lately, Nissha Printing Co Ltd has developed a lighting apparatus using dye-sensitized solar cells (DSSCs) and started to sell it. It is the first time that a DSSC developed and manufactured in Japan has been commercialized. The lighting apparatus, "Akarie," stores electricity generated with the DSSCs during daylight hours in a rechargeable battery. And the electricity is used to power an LED lamp during nighttime hours. The Akarie is made by using DSSCs on the top of a case that measures 200 x 200 x 85mm and weighs 3.7kg and placing a rechargea...

SemiLEDs leads the packaging manufacturers and became one of the first to pass a third party LM-80 test in Taiwan, performed by IST, required by Energy Star. SemiLEDs (Nasdaq: LEDS), with cooperation of Integrated System Technology(IST), is proud to announce that its S35 product line has successfully completed the requirements of the stringent 6000 hour lumen maintenance test (LM-80) and the results showed an extrapolated lifetime of up to 50,000 hours. SemiLEDs’ S35 series is the first product to pass the LM-80 after IST’s received t...

According Tech-On.com, Kyoto University’s professor Hiroyuki Yano, has added resin, etc to paper or its material (pulp) to make transparent paper. This breakthrough was announced at the New Technology Presentation Meetings, which the university organized Aug 24, 2012, in Tokyo. Yano expects that the new technologies will be applied to transparent OLED substrates, substrates of organic thin-film photovoltaic (PV) cells, electronic paper, materials for car windows, packaging containers, etc. Cellulose nanofibers, which constitute pulp, have a width of 10-20nm ...