Top prize for 'light' inventor
A Japanese scientist who invented environmentally friendly sources of light has been awarded this year's Millennium Technology Prize.
Professor Shuji Nakamura was given the 1m Euro (£680,000) prize at a ceremony in Helsinki, Finland.
The award recognised his inventions of blue, green and white light-emitting diodes (LEDs) and the blue laser diode.
White LEDs could provide a sustainable, low-cost alternative to lightbulbs, especially in developing countries.
His other inventions such as blue LEDs are used in flat-screen displays, while blue lasers are already being exploited in the next generation of DVD player.
"Professor Nakamura's technological innovations in the field of semiconductor materials and devices are groundbreaking," said Jaakko Ihamuotila, chairman of the Millennium Prize Foundation.
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