LED structure teardowns

bshanahan14rulz · Sep 17, 2009

short versions free!

http://www.muanalysis.com/publications/

evilc66 · Sep 17, 2009

That was a fun read.

bshanahan14rulz · Sep 17, 2009

yeah, that's about all that is, but at least you nuts over here would appreciate it. I was surprised to learn that the K2 TFFC is actually sitting on a bunch of gold balls and not actually mounted to the substrate with anything else. Plus it's neat to see the surface details of the dice

lolzertank · Sep 17, 2009

Very interesting find!

bshanahan14rulz said:
yeah, that's about all that is, but at least you nuts over here would appreciate it. I was surprised to learn that the K2 TFFC is actually sitting on a bunch of gold balls and not actually mounted to the substrate with anything else. Plus it's neat to see the surface details of the dice

I think the PDF said it's not a K2 TFFC, just a regular K2.

bshanahan14rulz · Sep 18, 2009

I thought Thin-Film Flip-Chip meant that the chip is face-down, like in the K2 shown? or is all luxeon stuff FC and only some of it is TFFC?

Th232 · Sep 18, 2009

As per the last page of the K2 report and the pictures, it's definitely a flip chip design, so I'd say that at least all the K2s are flip chip, but not all are thin-film.

Edit: Checking the Rebels, yep, they're flip-chip as well.