Rubicon Technology, Inc. announces the launch of its commercial line of large diameter patterned sapphire substrates (PSS) in four-inch through eight-inch diameters. This new product line provides LED chip manufacturers with a ready-made source of large diameter PSS to serve the needs of the rapidly growing LED general lighting industry.
Growth of the LED general lighting market is expected to expand from nearly 300 million lamps shipped in 2012 to 3 billion by 2020 according to IMS Research. Technology innovation is helping the LED supply chain prepare for this dramatic growth. Most high-brightness LED manufacturers etch a pattern into the sapphire wafers in order to both improve epitaxial growth and extract more light from each chip. Patterned sapphire substrates have been available for purchase in smaller diameters, but Rubicon now offers highly customizable 6" and 8" PSS. The larger substrates increase chipmakers' throughput and efficiency.
Rubicon offers fully customizable sub-micron patterning capability with tight dimensional tolerances, within ±0.1 µm. With an edge exclusion zone as small as 1 mm, Rubicon offers LED chip manufacturers more usable area to maximize the number of chips per wafer. Patterning is available in a range of shapes including cone, dome and pyramid, and in a range of orientations. Further customization of geometry, pattern and orientation is available upon request.