TOKUSHIMA, Japan, Dec. 20 -- Nichia Corp. and Sony Corp. announced they will jointly develop blue-violet laser diodes for use in optical disc recording. They have also agreed to share their blue-violet laser diode technologies, patents and know-how. Specifically, the companies will jointly develop 405 nm high-output blue-violet laser diodes for "Blu-ray Disc," a large-capacity optical disc video recording format, and will enhance their technological level for mass production. For more information, visit: www.nichia.com