"Spehro Pefhany" wrote in message

On Sat, 2 Jun 2007 00:32:01 -0400, the renowned "Tom Del Rosso"
wrote:

In the mid-80s there was a new PCB technology without vias. Traces
just came to an end and disappeared into the board, with maximum
density. What happened? There should be more demand for it than
ever, and good yield should be possible by now if it was done 20
years ago.

You're not talking about blind vias are you? They're alive and well.

Come to think of it, I know what blind vias are, but that's not it. These
were from top and bottom layers, but it looked like the trace came to a dead
end.


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