3D IC: Are We There Yet?

3D IC: Are We There Yet?
by Paul McLellan on 04-13-2013 at 4:42 pm

For the last few years, thru silicon via (TSV) based ICs have been looming in the mist of the future. Just how far ahead are they? Xiliinx famously has a high-end gate-array in production on a 2.5D interposer, Micron has a memory cube, TSMC has done various things in 3D that it calls CoWoS (chip on wafer on substrate), Qualcomm have been… Read More


3D Thermal Analysis

3D Thermal Analysis
by Paul McLellan on 07-17-2012 at 11:32 am

Matt Elmore of ANSYS/Apache has an interesting blog posting about thermal analysis in 3D integrated circuits. With both technical and economic challenges at process nodes as we push below 28nm, increasingly product groups are looking towards through-silicon-via (TSV) based approaches as a way of keeping Moore’s law… Read More


GSA 3DIC and Cadence

GSA 3DIC and Cadence
by Paul McLellan on 04-29-2012 at 10:00 pm

At the GSA 3D IC working group meeting, Cadence presented their perspective on 3D ICs. Their view will turn out to be important since the new chair of the 3D IC working group is going to be Ken Potts of Cadence. Once GSA decided the position could not be funded then an independent consultant like Herb Reiter had to bow out and the position… Read More


EDPS: 3D ICs, part II

EDPS: 3D ICs, part II
by Paul McLellan on 04-12-2012 at 10:00 pm

Part I is here.

In the panel session at EDPS on 3D IC a number of major issues got highlighted (highlit?).

The first is the problem of known-good-die (KDG) which is what killed off the promising multi-chip-module approach, perhaps the earliest type of interposer. The KDG problem is that with a single die in a package it doesn’t… Read More


EDPS: 3D ICs, part I

EDPS: 3D ICs, part I
by Paul McLellan on 04-10-2012 at 10:00 pm

The second day (more like a half-day) of EDPS was devoted to 3D ICs. There was a lot of information, too much to summarize in a few hundred words. The keynote was by Riko Radojcic of Qualcomm, who has been a sort of one-man-band attempting to drive the EDA and manufacturing industries towards 3D. Of course it helps if you don’t … Read More


3D Standards

3D Standards
by Paul McLellan on 02-01-2012 at 5:06 pm

At DesignCon this week there was a panel on 3D standards organized by Si2. I also talked to Aveek Sarkar of Apache (a subsidiary of Ansys) who is one of the founding member companies of the Si2 Open3D Technical Advisory Board (TAB), along with Atrenta, Cadence, Fraunhofer Institute, Global Foundries, Intel, Invarian, Mentor, Qualcomm,… Read More