Issue Date: April 4, 2011
Sumitomo, Samsung Form LED Venture
Sumitomo Chemical and Samsung LED have agreed to form a joint venture in South Korea to produce sapphire substrates for light-emitting diodes. Sumitomo is already a supplier of high-purity alumina used in manufacturing sapphire substrates. To make LEDs, manufacturers slice sapphire ingots into thin sheets that are then coated with a luminescent layer. The partners expect that their venture will eventually supply a broader range of LED materials.
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