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LEDs ♦ news digest


environment for employees and visitors to experience at Douglass House.


Cabinet Member for Finance, Councillor Mark Lowry, says, “Plessey Semiconductors is a local business pioneering a new innovative product which has huge growth potential. We are keen to support their research into their latest lighting product, which is designed to reduce carbon emissions and save money, by providing a test bed for them. If successful, this could bring with it huge investment and job opportunities into the city.”


Neil Harper, Plessey’s LED business unit director, adds “We are excited to be able to work with Plymouth City Council and to play a key role in this first pilot project. Our solid-state LED lighting solution helps Plymouth City Council create a better working environment as well as contributing aggressively towards achieving their ambitious targets for cost and performance efficiencies. We are looking forward to continuing the development programme with our partners at Plymouth City Council.”


features.


Soraa used the GaN characteristics like the optical transparency and the high electrical and thermal conductivity to create a unique vertical structure for these LEDs. The layers deposited by epitaxy are very thin.


Soraa GaN on GaN LED packaged in a silicon WLP


A high current density per square cm is obtained, estimated at 120A / sq cm. The Soraa LEDs have a triangular shape to limit the internal reflection of the light and thus increase the light extraction.


An original silicon package with a multilayer mirror is used to increase the light extraction of the LED lamp.


More details are described in the report, “LED : SORAA : Tri-LED & Lightchip,” available from System Plus Consulting.


Source: Yole Développement (www.yole.fr)


Neil Harper, Plessey’s Solid State Lighting Business Unit Director, explaining the benefits of the new lighting to Councillor Brian Vincent - Cabinet Member for Environment, Plymouth City Council


This breakthrough will enable much faster adoption of LED implementation in both commercial and residential market segments. The joint development programme with Plymouth City Council is a cornerstone of Plessey’s pledge to help create better use of the limited resources available on our planet.


Soraa unveils first GaN on GaN LED packaged in a silicon WLP


This LED has a gallium nitride substrate, triangular shaped chip, simplified epitaxial structure and an original silicon-based wafer level packaging


Soraa has recently released the first GaN on GaN LED in a 50W halogen equivalent MR16 lamp with several new


Cambridge Nanotherm & Optocap ship first Chip-on- Heatsinks to LED firm The joint technology was chosen for its outstanding


thermal performance, reduced costs and simplified supplier management and assembly


Cambridge Nanotherm is partnering with Optocap, an advanced microelectronic and optoelectronic packaging design and assembly company.


Together, the companies have shipped what they say is the first ever Chip-on-Heatsink modules to a customer in the LED industry.


“As a design and assembly service provider we need to ensure we specify materials that will enhance our customers’ products,” says David Ruxton, CEO of Optocap. “We specified Cambridge Nanotherm’s technology due to the outstanding thermal performance


July 2013 www.compoundsemiconductor.net 69


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