SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Technology Stocks : Wolf speed -- Ignore unavailable to you. Want to Upgrade?


To: RocketMan who wrote (1493)1/9/2000 5:38:00 PM
From: John Walliker  Respond to of 10714
 
RocketMan,

...unless brightness was the determining factor. I can understand that for highway signs, etc, but not for cellular phones...

Power consumption is of enormous importance in cellular phones. If the same brightness can be obtained with less power then it is very worthwhile. The eye is most sensitive in the green/yellow part of the spectrum, so combining this colour range with very high efficiency leds gives the longest battery life.

John



To: RocketMan who wrote (1493)1/9/2000 6:23:00 PM
From: unclewest  Respond to of 10714
 
OK, but why would they replace the LEDs that are already used? I understand the bright blue/green LEDs and how they are better/cheaper than competing technologies, but that does not imply that a cell maker would go to that technology instead of using current non-SiC technology, unless brightness was the determining factor. I can understand that for highway signs, etc, but not for cellular phones.

In the LED business cost is everything and CREE's are cheaper but equally bright with the latest improvements.

CREE's design allows for easier connectivity which overcomes engineering problems in some apps where sapphire is used. The same design does not work with sapphire.