Overview of Test Strategies for 3DICs


A new technical paper titled "Design-for-Test Solutions for 3D Integrated Circuits" was published by researchers at Duke University, Arizona State University, and NVIDIA. Abstract: "As Moore's Law approaches its limits, 3D integrated circuits (ICs) have emerged as promising alternatives to conventional scaling methodologies. However, the benefits of 3D integration in terms of lower power co... » read more

IEDM: Backside Power Delivery


One part of the short course that I attended at IEDM in December was about backside power delivery networks. It was presented by Gaspard Hiblot of imec and titled "Process Architectures Changes to Improve Power Delivery." The presentation is co-credited with Geert Hellings and Julien Ryckaert. I should preface this post with the fact that this presentation was 80 slides long and so I will only... » read more

Enabling Test Strategies For 2.5D, 3D Stacked ICs


Improved testability, coupled with more tests at more insertion points, are emerging as key strategies for creating reliable, heterogeneous 2.5D and 3D designs with sufficient yield.  Many changes need to fall into place to make side-by-side 2.5D and 3D stacking approaches cost-effective, particularly for companies looking to integrate chiplets from different vendors. Today, nearly all of t... » read more

Expanding Advanced Packaging Production In The U.S.


The United States is taking the first steps toward bringing larger-scale IC packaging production capabilities back to the U.S. as supply chain concerns and trade tensions grow. The U.S. is among the leaders in developing packages, especially new and advanced forms of the technology that promise to shake up the semiconductor landscape. And while the U.S. has several packaging vendors, North A... » read more

Scaling Bump Pitches In Advanced Packaging


Interconnects for advanced packaging are at a crossroads as an assortment of new package types are pushing further into the mainstream, with some vendors opting to extend the traditional bump approaches while others roll out new ones to replace them. The goal in all cases is to ensure signal integrity between components in IC packages as the volume of data being processed increases. But as d... » read more

Fan-Out Packaging Options Grow


Chipmakers, OSATs and R&D organizations are developing the next wave of fan-out packages for a range of applications, but sorting out the new options and finding the right solution is proving to be a challenge. Fan-out is a way to assemble one or more dies in an advanced package, enabling chips with better performance and more I/Os for applications like computing, IoT, networking and sma... » read more

Designing 2.5D Systems


As more designs hit the reticle limit, or suffer from decreasing yield, migrating to 2.5D designs may provide a path forward. But this kind of advanced packaging also comes with some additional challenges. How you adapt and change your design team may be determined by where your focus has been in the past, or what you are trying to achieve. There are business, organizational, and technical c... » read more

Shortages, Challenges Engulf Packaging Supply Chain


A surge in demand for chips is impacting the IC packaging supply chain, causing shortages of select manufacturing capacity, various package types, key components, and equipment. Spot shortages in packaging surfaced in late 2020 and have since spread to other sectors. There are now a variety of choke points in the supply chain. Wirebond and flip-chip capacity will remain tight throughout 2021... » read more

Redefining The Power Delivery Network


Reliably getting power around a package containing multiple dies, potentially coming from multiple sources, or implemented in diverse technologies, is becoming much more difficult. The tools and needed to do this in an optimized manner are not all there today. Nevertheless, the industry is confident that we can get there. For a single die, the problem has evolved slowly over time. "For a ... » read more

Chiplet Momentum Rising


The chiplet model is gaining momentum as an alternative to developing monolithic ASIC designs, which are becoming more complex and expensive at each node. Several companies and industry groups are rallying around the chiplet model, including AMD, Intel and TSMC. In addition, there is a new U.S. Department of Defense (DoD) initiative. The goal is to speed up time to market and reduce the cost... » read more

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