GT Advanced Technologies has released a case study of evaluating the impact of sapphire color on the LED manufacturing process.

All studies were conducted using blind samples of GT ASF sapphire material as well as LED grade sapphire from other sources. The case study results were obtained from an independently conducted Glow Discharge Mass Spectroscopy (GDMS) analysis as well as a High Brightness (HB) LED device fabrication study performed using Photo-thermalmon-path Interferometry (PCI) analysis.

The studies demonstrated that all sapphire, regardless of source, exhibits color at the core level, that the pink hue of GT Advanced Sapphire Furnace (ASF™) material is not indicative of impurities, and that pink ASF sapphire does not have an adverse affect on the LED manufacturing process nor does it require extra steps or incremental costs to remove the pink hue. In addition, it was demonstrated that GT ASF pink sapphire material makes the lowest absorption, highest transmission epi-wafers of the samples examined.

The new study is part of a largerprehensive material characterization project initiated by GT to examine the effects of sapphire material properties on the entire manufacturing processes in the HB LED value chain. Thepany will present the findings of the color case study at the GG LED Conference, December 9-10, in Shenzhen, China.
 

GT Advanced Technologies has released a case study of evaluating the impact of sapphire color on the LED manufacturing process.

All studies were conducted using blind samples of GT ASF sapphire material as well as LED grade sapphire from other sources. The case study results were obtained from an independently conducted Glow Discharge Mass Spectroscopy (GDMS) analysis as well as a High Brightness (HB) LED device fabrication study performed using Photo-thermalmon-path Interferometry (PCI) analysis.

The studies demonstrated that all sapphire, regardless of source, exhibits color at the core level, that the pink hue of GT Advanced Sapphire Furnace (ASF™) material is not indicative of impurities, and that pink ASF sapphire does not have an adverse affect on the LED manufacturing process nor does it require extra steps or incremental costs to remove the pink hue. In addition, it was demonstrated that GT ASF pink sapphire material makes the lowest absorption, highest transmission epi-wafers of the samples examined.

The new study is part of a largerprehensive material characterization project initiated by GT to examine the effects of sapphire material properties on the entire manufacturing processes in the HB LED value chain. Thepany will present the findings of the color case study at the GG LED Conference, December 9-10, in Shenzhen, China.
 

Samsung Electronics Co., the world’s leading TV brand vendor, stated on Dec. 7 that its TV sales hit a record high of 5.7 million units in November, spurred by the high U.S. sales during the Thanksgiving weekend.

According to Samsung’s statement, due to that the sales went up 14% in November from 5 million units in October, thepany is certain to secure the number 1 spot for all of 2011. Also, thepany said in the statement that it was optimistic about the prospects of meeting its 2011 flat-screen TV sales target of 45 million units.

In fact, Samsung's TV division concluded a 240 billion won ($213 million) operating profit in 3Q11, propelled by increased shipments and sales of high-end models such as Internet TVs and LED-backlit flat-screens.

The outstanding performance is attributed to the fact that global TV makers are under business restructuring and outsourcing production as they face the fiercepetition and underperforming market.

Recently, the Samsung Advanced Institute of Technology and Seoul National University have made an announcement that the first LEDs to be fabricated on amorphous glass substrates.

As we know, manufacturers may peffer to improve GaN LEDs on silicon substrates (GaN-on-Si) rather than to choose gallium nitride (GaN)-based LEDs grown on crystalline sapphire wafers due to their expensive cost and are not amenable to large-sized wafer arrays.

But the research conducted by the Samsung Advanced Institute of Technology and Seoul National University has found that GaN LEDs on amorphous glass substrates offer even lower manufacturing costs, easier scalability to large-sized LED arrays, and potential use as emissive devices due to the transparency of the glass substrate material.

According to the research, the secret to controlled growth of the five-period indium GaN/GaN (InGaN/GaN) multiple quantum wells thatprise the emissive layer in the pyramidal-shaped LED array is a thin-film titanium pre-orienting layer that is similar to the GaN hexagonal crystal structure.

Following the pre-orienting layer and the initial low-temperature GaN layer (LT-GaN) is a hole-patterned silicon dioxide (SiO2) layer that further defines the nucleation sites for the emissive-layer growth stages using a local heteroepitaxy process.

After polymerization of the pyramidal structures and a final indium tin oxide (ITO) electrode layer, the pyramidal LED devices were found to emit illumination in the range from 448–478 nm with an approximate luminance of 600 cd/m2.

Up close & personal with the Prospect Park tree, a special project by LED Waves + the City of New York. Image via Flickr Creative Commons.

HPML LED light module a perfect match with reliable light systems
 
OSRAM, one of the two leading light manufacturers in the world, has successfully provided its trademarked High Power Modular Lamps Advance (HPML AD) light module in the iLite System, an inflatable and portable floodlight.

The iLite’s light head is a high-quality, extremely durable OSRAM 12-volt HPML AD module that is IP66-rated for dust and moisture protection.
 
The iLite is a mobile, portable, inflatable LED floodlight. It is freestanding, battery operated and cordless and is ideal for temporary use in a variety of situations such as outdoor sporting events. Weighing less than 10kg, the iLite takes only three minutes to set up using patented “rigid air” technology and provides light brighter than a 300W halogen floodlight for up to three hours. The flexibility and ease-of-use of the iLite is a result of the seamlessbination of its portability with the reliability and durability of the OSRAM HPML AD module that is the light source of the iLite system. The iLite is produced by Air Structure International.
 
Additional benefits of the iLite:
•    Truly flexible lighting, can be easily used in areas without an electrical supply
•    Reliable, unbreakable OSRAM HPML AD creates a robust lighting solution
•    Provides low energy consumption and high level of brightness
•    Cordless, battery operated and easily transportable
 
Customers across the globe are impressed with the iLite. Lawrence James, senior partner of the Detroit-basedpany, The Frameworks, said, “The iLite unit is a quality kit, it is sturdy and well-made.”
 
“We’ve needed a good night illumination system for our winter training sessions in Cornwall for a long time,” said Gary Thompson, chairman of St. Newlyn East FC Club in Cornwall, U.K. “The iLite has opened up a new range of possibilities for us and is even better than we had hoped!”

“We are extremely pleased Air Structure International chose the OSRAM HPML AD as the light source for its iLite System,” said OSRAM Global SSL Outdoor Product Line Director Steven Kwek. “This highlights the remarkable flexibility of our light engine families.”
The HPML AD is part of OSRAM’s extensive range of HPML products, which offers LED products around the world – from LED modules for OEMs toplete LED luminaires.

Side by side Lighting Facts® Labels for the Genesys 1.0 and 2.0 LED T8 Tube Lights

Everlight has officially launched varieties of A60 series and MR16 series LED retrofits at 40 most popular branches of JHC Group in Hong Kong starting from December 1st. It is first time that use “EVERLIGHT” brand to capture Hong Kong market. This is also the most significant step to EVERLIGHT as well.

Currently, LED Lighting already became the pioneer trend and “ECO” marked products in global lighting market. Hong Kong government started to advocate LED lighting few years ago.

EVERLIGHT offers multiple discounts in order to provide Hong Kong consumers not only ECO, but also better performance LED lighting products which are made from Taiwan.

Besides, during the promotion, there will be EVERLIGHT mascot parade at the most popular streets and sightseeing spots to disseminate EVERLIGHT brand and LED Lighting to Hong Kong consumers.

OSRAM Opto Semiconductors Asia Ltd. has a new CEO. Louis Lam took over thepany’s Asian business at the beginning of December. He is also Vice President for worldwide sales of OSRAM Opto Semiconductors. His predecessor Dr Alfred Felder will in future be responsible for global sales of the business unit General Lighting at the parentpany OSRAM AG.

Louis Lam can look back on more than 25 years of experience in marketing and sales, as well as business development in the opto-semiconductors industry. He was responsible, among other things, for the successful expansion of regional business in Asia in the fields of mobile devices, Solid State Lighting (SSL), automotive lighting and various other sectors of industry.

“With his know-how and many years of experience in market development and in building up customer loyalty, Louis Lam is an outstanding choice particularly with a view to the important Asian market. At the same time, our thanks are due to Alfred Felder for his excellent work in this position,” says Aldo Kamper, CEO of OSRAM Opto Semiconductors.

Photo: OSRAM

Dr Alfred Felder (left) has moved to OSRAM AG – Louis Lam (right) took over as new CEO of OSRAM Opto Semiconductors Asia Ltd. in December.

osram-os/press

Curriculum vitae Louis Lam:
2010 – 2011    National Semiconductor Asia Ltd., President and Managing Director
2007 – 2010    OSRAM Opto Semiconductors Asia Ltd., Vice President of APAC Sales
2004 – 2007    SMSC Asia Ltd., Managing Director and Vice President Asia Sales
1998 – 2004    Asia Pacific Ltd., International Sales Director
(OEM and SME Channel Sales for APAC, Japan & Europe)
1994 – 1998    VP Asia and Japan Sales & Marketing, Te Semiconductor Ltd.
1992 – 1994    Bourns Asia Pacific Inc., Area Sales Manager for North Asia
1986 – 1992    National Semiconductor (H.K.) Ltd. Business Unit head of Microsystems Asia
1990    University of East Asia, Macau (MBA)
1981 – 1986    Southern Illinois University, USA (Bachelor and Master in electrical engineering)

ABOUT OSRAM OPTO SEMICONDUCTORS
OSRAM AG (Munich, Germany) is a wholly-owned subsidiary of Siemens AG and one of the two leading light manufacturers in the world. Its subsidiary, OSRAM Opto Semiconductors GmbH in Regensburg (Germany), offers its customers solutions based on semiconductor technology for lighting, sensor and visualization applications. OSRAM Opto Semiconductors has production sites in Regensburg (Germany) and Penang (Malaysia). Its headquarters for North America is in Sunnyvale (USA), and for Asia in Hong Kong. OSRAM Opto Semiconductors also has sales offices throughout the world. For more information go to osram-os.

Lately, unusually cold winter has affected the output of agriculture. Plant Grow Lights may be good for the growers to solve this problem ,and Everlight has actively to seize this opportunity with orders from Chinese Academy of Agricultural Science, an American herbal plant research organization and several European agricultural equipment suppliers.

Mainland China and the United States have issued warnings against unusually cold winter this year. Hebei Provincial Government of China has issued yellow alert for snowstorm while the U.S. National Oceanic and Atmosphere Administration forecast that El Nino Oscillation will bring the Northern hemisphere an unusually cold winter this year.

Unusually low temperatures globally willpound the food shortage issue since they represent fewer growing days. Everlight executives noted that plant grow lights are used as an auxiliary light source for plants, which makes up for shorter winter sunlight in high latitudes.

Everlight’s LED plant-grow light technology has grown mature following its entry into this segment this year. Blue and red LEDs are the most crucial light sources for photosynthesis of green plants.

It’s noted that Philips and Osram have also ventured into the emerging market. In the first quarter of 2011, Everlight and some 10 manufacturers including Philips reached an agreement to develop horticultural factory technologies, including plant-grow lights, plant nutrition liquid, and environmental humidity control.