Rubicon Technology, Inc. (NASDAQ:RBCN), a leading provider of sapphire substrates and products to the LED, semiconductor, and optical markets, today announced that it will showcase its line of sapphire substrates for the LED industry at the International LED Expo in Kintex, Korea, June 25-28. Rubicon will exhibit its line of sapphire products in Booth# F-25 & 26, Hall 4. Sapphire wafers are a key building block for LEDs – the most energy-efficient technology for general lighting and the dominant backlighting technology in consumer products such...