LED/OLED Lighting Technology Expo [Getty Images]

TOKYO - APRIL 14: A visitor touches a light emitting diode (LED) bulb during the second LED/OLED Lighting Technology Expo 'LIGHTING JAPAN' at Tokyo Big Sight on April 14, 2010 in Tokyo, Japan. LED and OLED lightings attract a great deal of attention as an environmental protection technology. (Photo by Kiyoshi Ota/Getty Images)

Getty Images News Kiyoshi Ota