Firm sees red over blue LED invention claims

By John Boyd in Yokohama IT’S an invention worth billions of dollars. But with the blue light-emitting diode already more than 10 years old, the row over who deserves the credit rumbles on. Last week, the company at the centre of the controversy told its side of the story. Light-emitting diodes were invented in the 1960s, when it was found that semiconductors could be made to emit visible light. Green and red LEDs quickly became common, but it wasn’t until 1993 that the first blue LED was created by Nichia of Japan. With the three primary colours now available,
  • 首页
  • 游艇租赁
  • 电话
  • 关于我们