news digest ♦ LEDs
accommodating layout configurations compared to the original MaxBright.
InfiniLED MicroLEDs are ultra bright
The company says it has developed a light output density of more than 300 W/cm2, the highest recorded for a commercially available LED type device
KaiStar, a joint venture between Epistar and Shenzhen Kaifa Technology Co., Ltd., is based in Xiamen, China and began LED production in 2012.
The systems will be added to KaiStar’s existing fleet of Veeco MOCVD systems as part of its 2013 capacity expansion plan.
MJ Jou, President of Epistar Corporation comments, “This latest capacity expansion in Xiamen is in keeping with our goal to maximise our position in the China LED backlighting, automotive and general illumination market.”
“Since we originally selected Veeco as our MOCVD equipment supplier for KaiStar a year ago, we have been extremely impressed with the product quality, service and support we have received. A critical deciding factor has been Veeco’s quick process transfer which is important as we share know-how across our LED manufacturing sites. In addition, the TurboDisc’s low cost-of-ownership made it a straight-forward decision to turn to Veeco as we add more tools for KaiStar in 2013.”
Bill Miller, Executive Vice President of Veeco, says, “We are pleased to support Epistar and Kaifa as they continue to expand their leadership position in the China market through KaiStar and their other joint ventures. We will remain focused on helping them to achieve their manufacturing goals.”
Veeco’s TurboDisc MaxBright M GaN MOCVD Multi-Reactor System platform is an MOCVD system designed to manufacture high quality, high brightness LEDs. The firm says its MaxBright M provides up to 15 percent improved footprint efficiency, easier serviceability and offers
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www.compoundsemiconductor.net January/February 2013
InfiniLED claims its latest MicroLEDs (µLEDs) have produced record optical beam intensity.
The firm’s newest device is capable of producing up to 1mW of light from a single 20µm pixel at 405nm.
The MicroLED combines the benefits of a laser and a LED to produce ultra-high light output. The MicroLED provides the wavelength flexibility, drive characteristics and simplicity of a LED as well as the power and collimated beam of a laser.
The ability to produce such light intensity and control directly from the chip enables the light to be efficiently used in a range of applications.
InfiniLED has achieved this performance using its patented MicroLED structure.
A parabolic reflector is etched into the semiconductor material during the fabrication process. This places an optical component directly at the site of light generation and at the most effective position for control of the light produced.
Not only has the light been shown to be extracted in ultra-high intensity but also at high efficiencies. By directing all the generated light through a single surface of the semiconductor it can be efficiently collected and used in the wider system.
The MicroLED is currently being used in a range of applications included life sciences, consumer electronics and OEM equipment. The device can be fabricated as a single pixel, large clusters of pixels or as addressable arrays where each pixel is individually switchable. The single pixels can be used to produce high intensity, collimated light over a small area or to produce useable light at ultra-low currents. The single pixels produce light with a few
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