Nichia and Sony have come to an agreement on the cross license of
Blue-Violet Laser Diode (hereafter Blue-Violet LD) related patents for
optical disc use.
In December 2002, Nichia and Sony have agreed to collaborate on the
development of Blue-Violet LD as well as building-up an environment to
share the usage of the related technologies which the 2 companies possess,
to accelerate the growing demand of Blue-Violet LD. Nichia and Sony have
also worked in collaboration on the Blue-Violet LD development for optical
disc recording/play-back use.
The cross license agreement will further strengthen the collaboration and
will enable usage of all related patents on Blue-Violet LD, with no time
limit, in the field of the optical disc recording/playback usage.
Collectively, there are approximately 800 patent applications in total
filed by both companies.
Blue-Violet LD is a 405nm wavelength semiconductor laser which will be
vital for Blu-ray disc system, enabling digital recording of
high-definition (HD) contents (movies) in consumer use and professional
disc system XDCAM. It is the key device in the HD era, in various
occasions where high quality images/movies are the key in HD contents
creation in Digital HD broadcasting and recording/play-back in consumer
Through the cross-license Sony will also
mass-produce and be the supplier of Blue-Violet LD, leading to building-up
a stable environment of the supply of Blue-Violet LD for optical disc use,
required for Blu-ray disc system market which is expected increase
Results of the join developments so far have already been implemented in
mass production by both companies, and mass production shipment by Nichia
and partial shipment of evaluation samples to other companies by Sony are
Both companies have agreed to continue to collaborate in technology
development, leading to enhanced performance of Blue-Violet LD and
contribution in the development of Blu-ray disc and XDCAM market.