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Sharp joins blue-laser diode market

Posted: 22 Nov 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Sharp? blue-laser? blue-laser diode? Nichia? Sony?

Sharp Corp. has become the second merchant supplier of blue-laser diodes, following Nichia Corp. and already started supplying diodes to an undisclosed client.

Nichia and Sony Corp. are producing blue-violet lasers in volume at present under a cross-licensing deal. For now, however, Sony's capacity is dedicated to internal use for production of the Playstation 3.

On the merchant market, Sharp's capacity will supplement Nichia's supply, which is estimated to be several hundred thousand units a month. Sharp has a startup capacity of 150,000 units a month and can expand that depending on the volume of orders, according to a spokesman.

Sharp said it has no plans at present to detail its technology at academic conferences, but said it believes its blue-laser diode does not infringe Nichia or Sony patents.

The Sharp diode emits at 406nm with 20mW maximum power out for read-only applications, such as for Blu-ray Disc and HD-DVD players. The diode achieves a 10,000hr lifetime with continuous-wave operation at 5mW power output. Power consumption is 168mW.

- Yoshiko Hara
EE Times




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