Info on CREE core(s) ??

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Enlightened
Joined
Nov 11, 2006
Messages
208
Location
Madison, WI
Is there any information out there regarding the core chip/engine used in the cree xlamp line .. apparently the older 'XBright' (XB9000?) has been replaced with the newer 'EZBright1000' core used in the XRE.

Just doing some googling and it looks like the history of white LED development is ugly. Lots of patents and suits. Many people were involved in the development of white LEDs.

I need to satisfy my geek curiosity - are there any pictures or diagrams of the xbright core? Things like the geometry of the pn junction, what techniques are being used to help the created light escape the die. Apparently Cree has been very tight lipped about things.
 

SpeedEvil

Newly Enlightened
Joined
Dec 3, 2006
Messages
59
Dig around on the cree website.
There are details of the dies there.
Somewhere I've even got some samples - admittedly of older ones.
 
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