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What are the white spot in the die photo?
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fxxjssc



Joined: 06 Jan 2006
Posts: 80
Helped: 2
Post05 Nov 2009 3:39   

What are the white spot in the die photo?
Hi all,
I always find this kind of die photo with many
white spot like in the attached picture. are these bonding
pads or some other use? if they are bonding pads, how
do so many bonding wires connect to such a chip?
or they use probe station to test this chip?

Thanks
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dick_freebird



Joined: 04 Mar 2008
Posts: 309
Helped: 45
Location: USA
Post05 Nov 2009 16:26   

What are the white spot in the die photo?
I would take them to be probe points, or bump attach
pads - perhaps already bumped. They appear different
than the periphery bond / probe pads.

You'd have to play with different mags and tilts to get a
better idea.
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