Mitsubishi makes breakthrough on cheap LED substrates

The man who invented the blue LED has joined forces with Mitsubishi Chemical and developed a way of producing much cheaper LED substrates.

According to Japanese wire Nikkei.com, Shuji Nakamura and scientists at Mitsubishi have developed a technique that allows them to grow gallium nitride (GaN) crystals as large as two inches in diameter.

When the crystals are sliced, they can be used to make LEDs with far lower power consumption and provide three times the power of those made from sapphire substrates.

Making GaN crystals is expensive but by 2012, said the report, Mitsubishi will be able to go into mass production of two inch substrates as early as 2012. There’s more here (subscription needed).