A race is on to commercialize blue-violet lasers, the key to producing a successor to the DVD
Shuji Nakamura, a researcher at Japan's Nichia Corp., develops the first blue-laser diode.
Matsushita and Sony develop their own blue lasers.
A nine-member consortium--led by Sony, Pioneer, and Matsushita--unveils the Blu-ray Disc standard. Toshiba is uncommitted.
Nichia is expected to launch sales of the first commercial blue-laser diodes.