tag: defect detection

Multi-Tier Die Stacking Enables Efficient Manufacturing
By Jessica Albright - 24 Oct, 2024 - Comments: 0

Advanced packaging is currently facing a critical challenge to increase manufacturing efficiency without sacrificing device performance. Vertical integration techniques, such as multi-tier die stacking and hybrid bonding, enable increased integration density, therefore improving yield of high-quality devices. However, these highly precise processes require significant attention to defectivity... » read more

Achieving Zero Defect Manufacturing Part 3: Prevention Of Defects
By Prasad Bachiraju - 16 Sep, 2024 - Comments: 0

The concept of zero defect manufacturing has been around for decades, arising first in the aerospace and defense industry. Since then, this manufacturing approach has been adopted by the automotive industry, and it has only grown in importance as the sector transitions to electric vehicles. Given the role semiconductors play in today’s vehicles, and will play in the future, it is no surprise ... » read more

Achieving Zero Defect Manufacturing Part 2: Finding Defect Sources
By Prasad Bachiraju - 06 Aug, 2024 - Comments: 1

Semiconductor manufacturing creates a wealth of data – from materials, products, factory subsystems and equipment. But how do we best utilize that information to optimize processes and reach the goal of zero defect manufacturing? This is a topic we first explored in our previous blog, “Achieving Zero Defect Manufacturing Part 1: Detect & Classify.” In it, we examined real-time defe... » read more

Achieving Zero Defect Manufacturing Part 1: Detect & Classify
By Prasad Bachiraju - 11 Jun, 2024 - Comments: 0

Whether the discussion is about smart manufacturing or digital transformation, one of the biggest conversations in the semiconductor industry today centers on the tremendous amount of data fabs collect and how they utilize that data. While chip makers are accumulating petabytes of data across the entire semiconductor process, a question arises: how much of that information is being fully uti... » read more

A Wrap-Up Of Photomask Japan 2024
By Ingo Bork - 23 May, 2024 - Comments: 0

This year, I had the opportunity to attend the 30th Symposium on Photomask and NGL Mask Technology, also called Photomask Japan 2024 (PMJ), in Yokohama, Japan, from April 16 to 18. This well-regarded symposium brings together engineers from all over the world to share ideas on photomasks, NGL masks and related technologies. It was great being back to an in-person conference after four years ... » read more

Using Automatic Defect Classification To Reduce The Escape Rate Of Defects
By Bryce Chi - 09 Apr, 2024 - Comments: 0

Automated optical inspection (AOI) is a cornerstone in semiconductor manufacturing, assembly and testing facilities, and as such, it plays a crucial role in yield management and process control. Traditionally, AOI generates millions of defect images, all of which are manually reviewed by operators. This process is not only time-consuming but error prone due to human involvement and fatigue, whi... » read more

Techniques To Identify And Correct Asymmetric Wafer Map Defects Caused By Design And Process Errors
By James Kim - 22 Feb, 2024 - Comments: 0

Asymmetries in wafer map defects are usually treated as random production hardware defects. For example, asymmetric wafer defects can be caused by particles inadvertently deposited on a wafer during any number of process steps. In this article, I want to share a different mechanism that can cause wafer defects. Namely, that these defects can be structural defects that are caused by a biased dep... » read more

Hunting For Macro Defects: The Importance Of Bare Wafer Inspection
By Aseem Srivastava - 08 Sep, 2022 - Comments: 0

As logic and memory semiconductor devices approach the limits of Moore’s Law, the requirements for accuracy in layer transfer become increasingly stringent. One leading silicon wafer manufacturer estimates that 50% of epitaxial wafer supply for logic will be on nodes equal to or less than 7nm. This is up approximately 30% from earlier in the decade. To meet the demands of extreme ultraviol... » read more

Sky High: More Thoughts To Consider Before Transitioning To The Cloud
By Miki Banatwala - 09 Aug, 2022 - Comments: 0

In our previous blog, I talked about the essential factors that a company must consider in leveraging cloud resources to accelerate their goals. The objective here is not just about putting some of the workload in the cloud; rather, it is about realizing the transformation adopting cloud technologies will bring about. In particular, it is more important to think of the cloud not only as a set o... » read more

Finding Wafer Defects Using Quantum DL
By Technical Paper Link - 13 Jun, 2022 - Comments: 0

New research paper titled "Semiconductor Defect Detection by Hybrid Classical-Quantum Deep Learning" by researchers at National Tsing Hua University. Abstract "With the rapid development of artificial intelligence and autonomous driving technology, the demand for semiconductors is projected to rise substantially. However, the massive expansion of semiconductor manufacturing and the develo... » read more

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