LEDs ♦ news digest
home video, video walls and mainstream business and education.
For instance, the company’s latest 5.4 mm2 green LED can output up to 3000 lumens at a current density of 3.0 A/mm2. This chipset allows system manufacturers to design portable LED projectors with performance in excess of 700 lumens, a 40% improvement over products introduced only 1 year ago.
“The rapid pace of improvement of our Pure Green LEDs is a testimony to the large untapped potential of this technology,” says Arvind Baliga, VP of Engineering. “Alternative approaches such as phosphor conversion technologies rely on mature platforms with limited upside potential and also come with a broad spectrum that results in increased optical losses of up to 20%.”
“Our customers recognise that Luminus Projection Chipsets enable the brightest projectors today and more importantly, place them on a faster trajectory to transition their portfolio to a lamp-free model. Increased investment in R&D and rapid prototyping will dramatically accelerate our progress in reaching brightness targets needed to move into the business and education segments,” notes Baliga.
“Luminus’ world’s brightest green LED just got better, and the best testimony to this achievement is over 1 million consumer and professional of lamp-free projection displays that have been deployed using our technology - a market that did not even exist only 4 years ago,” adds Stephane Bellosguardo, Director of Global Product Marketing at Luminus Devices.
“After virtually eliminating lamps in markets such as video walls, our technology is now gaining similar momentum in consumer video, education and business projection markets. With RoHS exemptions for most high pressure mercury lamps set to expire in 2015, these latest advancements in Pure Green LED technology provide our customers with a path towards an environmentally friendly light source that combines cost-effectiveness and performance.”
Luminus will be showcasing its latest advances in LED technology at InfoComm 2012 in Las Vegas at booth #C7942 at the Las Vegas Convention Centre.
Plessey aims to provide GaN-on-Si LEDs with Aixtron reactor by year end
The first Aixtron CRIUS II-XL Reactor will be used to set up a process for growing gallium nitride-on- silicon LEDs. Aixtron SE has a new MOCVD system order from Plessey Semiconductors Ltd., UK.
The contract is for the first of a set of production ready CRIUS II-XL reactors in a 7x6-inch wafer configuration. The reactors are dedicated to the growth of high brightness LED wafers based on GaN-on-Silicon materials.
Barry Dennington, COO of Plessey Semiconductors, comments, “We are on schedule for the production of a world class LED that will become the high performance lighting LED at the price breakthrough the market has been waiting for. We completed the acquisition of the University of Cambridge spin-off company CamGaN in February 2012 and are now installing the capability for the full commercial exploitation of GaN-on- Silicon technology. Furthermore, we will be in early prototype production before the end of Q3 2012 and in full production by Q2 2013.”
CamGaN has already developed a six inch GaN- on-Silicon process on a single wafer Thomas Swan reactor and this process will be transferred to Plessey’s Plymouth plant onto the new Aixtron reactor. According to sources at Plessey, the firm aims to purchase further reactors once the manufacturing process has been established on the CRIUS II-XL tool.
Neil Harper, HB LED Programme and Product Line Director, adds “The CRIUS II-XL reactor will form the basis of our commencement of full production of materials for LEDs. Plessey’s branded MAGIC (Manufactured on GaNICs) LEDs will be fabricated on large area silicon substrates through our 6-inch integrated circuit fabrication line in Plymouth. Aixtron’s latest CRIUS technology has many advantages that meet our needs, such as the best cost-of-ownership for GaN epi-layer growth on 6-inch silicon substrates and eventually on 8-inch silicon substrates. In addition, we can draw upon the excellent support services in the UK from Aixtron Ltd. and Aixtron Europe.
”Bernd Schulte, COO of Aixtron, adds, “We are very pleased to be able to make this announcement.
July 2012
www.compoundsemiconductor.net 65
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