Author's Latest Posts


Making The Most of Test Resources


Semiconductor testing is undergoing multiple paradigm changes at once with the common goals of producing more known good die per month with low test cost. Achieving these goals requires a delicate balance between yield, quality, and test times. There are multiple ways to go about making better use of existing resources, many of which involve an increasing use of design for test (DFT) methods... » read more

Transforming Test For Co-packaged Optics


Data centers are undergoing a dramatic transformation to reduce the power consumption of high-speed data transmissions by 70% or more with co-packaged optics. By moving optical transceivers from the fronts of racks into the same package as the networking switch and HBMs, AI programs that used to take a week to run can now be completed in a day. To enable this change in production manufacturi... » read more

The Rise Of Panel-Level Packaging


An insatiable demand for logic to memory integration for AI and high-performance computing is driving progress toward very large-format packages, which are expected to approach 10 times the maximum reticle size in the next few years. These assemblies are best developed using fan-out panel-level packaging, replacing today’s wafer carrier with a panel. Fan-out packaging enables substantially... » read more

Easing The Stress For Package-Level Burn-In


Considered something of a necessary evil, burn-in of IC packages during production does a great job of weeding out latent defects so they don’t turn into failures in the field. But as AI and multi-chiplet packages become more common, and concerns about aging circuitry heighten, shifting stress testing to the wafer level looks increasingly attractive from a quality, throughput, and cost standp... » read more

Novel Assembly Approaches For 3D Device Stacks


The next big leap in semiconductor packaging will require a slew of new technologies, processes, and materials, but collectively they will enable orders of magnitude improvement in performance that will be essential for the AI age. Not all of these issues are fully solved but the recent Electronic Components Technology Conference (ECTC) provided a glimpse into the huge leaps in progress that... » read more

Challenges In Using Sub-7nm ICs In Automotive


The automotive industry is producing vehicles with increasing levels of real-time decision-making, enabled by thousands of ICs, sensors, and multi-chip packages, but making sure these systems work flawlessly throughout their expected lifetimes is a growing challenge. Automotive chips traditionally were developed at mature process nodes in five- to seven-year cycles, but much has changed over... » read more

Co-Packaged Optics Reaches Power Efficiency Tipping Point


Commercialization has started for network switches based on co-packaged optics (CPO), which are capable of routing signals at terabits per second speeds, but manufacturing challenges remain regarding fiber-to-photonic IC alignment, thermal mitigation, and optical testing strategies. By moving the optical-to-electronic data conversion as close as possible to the GPU/ASIC switch in data center... » read more

Identifying Sources Of Silent Data Corruption


Silent data errors are raising concerns in large data centers, where they can propagate through systems and wreak havoc on long-duration programs like AI training runs. SDEs, also called silent data corruption, are technically rare. But with many thousands of servers, which contain millions of processors running at high utilization rates, these damaging events become common in large fleets. ... » read more

Backside Power Delivery Nears Production


Backside power delivery is being called a game changer — a breakthrough technology and the next great enabler in CMOS scaling. It promises significant PPA advances, including faster switching, lower voltage droop, and reduced power supply noise. And it is poised to deliver these benefits below the 2nm node, despite a substantial disruption in front-end processes from lithography pattern di... » read more

Why Thin Film Measurements Matter


Semiconductor devices are becoming thinner and more complex, making thin deposited films even harder to measure and control. With 3nm node devices in production and 2nm nodes ramping toward first-silicon, the importance of precise film measurement is only growing in significance as fabs seek to maintain the performance and reliability of leading-edge devices. Whether it’s the read and writ... » read more

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