Unlocking The Value Of Yield


Have you stopped to consider the impact of yield on your overall product cost? Of course you did, when you considered your yield targets and set your product goals. But is it good enough to stop once the goals are achieved, or should you find ways to drive additional value into your organization once production has begun? What is the value of a 1% improvement in product yield? The short answer ... » read more

Silicon Photonics Raises New Test Challenges


Semiconductor devices continuously experience advancements leading to technology and innovation leaps, such as we see today for applications in AI high-performance computing for data centers, edge AI devices, electric vehicles, autonomous driving, mobile phones, and others. Recent technology innovations include Angstrom-scale semiconductor processing nodes, high-bandwidth memory, advanced 2.5D/... » read more

AI Semiconductors Require An Integrated Test Solution


The rapid proliferation of generative pre-trained transformers based on large language models (LLMs) is driving growth in the market for chips that can run the LLMs and other artificial intelligence (AI) and machine learning (ML) applications. Several types of chips hold promise for accelerating AI computing. Graphical processing units (GPUs) have proven to be capable solutions for the server/c... » read more

Failure To Launch


Failure analysis (FA) is an essential step for achieving sufficient yield in semiconductor manufacturing, but it’s struggling to keep pace with smaller dimensions, advanced packaging, and new power delivery architectures. All of these developments make defects harder to find and more expensive to fix, which impacts the reliability of chips and systems. Traditional failure analysis techniqu... » read more

Early Detection Of C-RES Degradation On High-Current Power Planes


Probe-card or device contactor damage can be dramatic and catastrophic, with yield dropping drastically very quickly. What is not dramatic is the hypothesized slow probe needle or contactor degradation process that might precede catastrophic failure. Such degradation is difficult to detect in the early stages, when probe cards, die, and packages continue to yield normally. A key goal is to dete... » read more

Industry Standards For Chiplets And Their Role In Test


As the semiconductor industry increasingly moves to chiplets, 2.5D/3D packaging, and heterogeneous integration, there are significant new challenges for test. Leaders like Teradyne have the technologies necessary to respond and innovate, but to keep the industry running smoothly, we need effective collaboration, and that demands standardization. Source: Arizona State University There ... » read more

No-Compromise Packetized Test Improves DFT Efforts


Design for Test (DFT) managers often must make difficult and sometimes costly trade-offs between test implementation effort and manufacturing test cost. The traditional method for evaluating these trade-offs has been to use hierarchical DFT methods in a divide-and-conquer approach. In hierarchical DFT efforts, all implementation, including pattern generation and verification, is done at the cor... » read more

Semiconductor Test Faces Technology Shifts In The AI Era


The surge in data-rich applications shows no signs of slowing down, fueling significant evolution within the global semiconductor industry. This insatiable demand for data necessitates a comprehensive ecosystem involving sensors and systems to capture data, networks to transmit it, and storage and processing power to analyze it. Successful deployment of these applications relies on the devel... » read more

Understanding Test Quality In Semiconductor Devices: An Overview


When it comes to semiconductor device testing, the primary goal is to ensure that each device meets functional and performance specifications. Testing also plays a crucial role in confirming that products will work as intended in real-world applications. However, defects in the manufacturing process can be a hindrance, making testing an essential step for quality assurance. Why test matters: F... » read more

Analysis Of Multi-Chiplet Package Designs And Requirements For Production Test Simplification


In recent years there has been a sharp rise of multi-die system designs. Numerous publications targeting a large variety of applications exist in the public domain. One presentation [2] on the IEEE’s website does a good job of detailing the anecdotal path of multi-die systems by way of chiplet building blocks integrated within a single package [2]. The presentation includes references to a ha... » read more

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