Automated X-ray Metrology (AXM) for Advanced Packaging

Let's Talk About Enabling Inline, AI-Driven Yield Optimization for Next-Generation Semiconductor Devices

Executive Summary

Advanced packaging has become a critical enabler of semiconductor innovation, driven by artificial intelligence, high-performance computing, and photonics integration. As device architectures transition toward heterogeneous integration and co-packaged optics, manufacturing complexity increases significantly. Nordson’s Automated X-ray Metrology (AXM) provides a differentiated solution by enabling inline, non-destructive inspection with high precision, high throughput, and AI-driven defect classification. Unlike traditional inspection approaches, AXM operates directly within cleanroom environments, enabling real-time process control and measurable yield improvements.

The Shift to Advanced Packaging

The semiconductor industry is rapidly transitioning from wafer-level packaging to panel-level and heterogeneous integration strategies. These architectures demand tighter interconnect pitches, larger substrate formats, and integration of multiple materials and dies. As a result, inspection requirements have shifted from simple verification to complex, high-resolution metrology that can operate at scale. Nordson’s AXM technology is purpose-built to support this transition, delivering production-ready metrology rather than lab-based analysis.

Manufacturing Challenges

As packaging complexity increases, manufacturers must manage shrinking geometries, increased interconnect density, and greater risk of defects such as non-wet opens and voiding. At the same time, higher-value devices require stricter control to avoid yield loss. Conventional inspection techniques struggle to meet these demands due to limitations in resolution, throughput, or integration into production environments. AXM addresses these gaps by combining precision imaging with automated, inline deployment.

Nordson AXM Technology

Automated X-ray Metrology uses transmissive X-ray imaging to visualize internal structures within semiconductor packages without destruction. Nordson’s implementation extends beyond imaging by delivering true metrology capability, enabling quantitative measurement of bump diameter, stand-off height, and TSV geometry. The system also detects critical failure modes including bridging and missing connections. This combination of inspection and measurement provides a unique advantage in process control. 

Differentiated Imaging Capabilities

Nordson AXM supports 2D, 2.5D, and full 3D reconstruction methods, allowing users to balance throughput with analytical depth. While 2D imaging provides rapid inspection, 3D reconstruction enables volumetric analysis for precise measurements. Unlike competing solutions, Nordson’s platform is optimized for high-throughput inline use while maintaining metrology-grade accuracy. 

Inline Applications Across the Process Flow

AXM is deployed across wafer, chip-on-wafer, and substrate-level processes, providing comprehensive coverage of critical inspection points. This flexibility allows manufacturers to identify defects early, reduce scrap, and improve overall yield. Nordson’s ability to handle wafers, trays, and panels within a single platform further differentiates it from point solutions.

XM8000 Platform Advantage - Key Metrology Tool for Semiconductor Advanced Packaging

The XM8000 Pro is designed for semiconductor fabs, with full cleanroom compatibility and automation integration. It supports SECS/GEM communication and automated material handling systems, enabling seamless integration into production lines. With proven reliability and throughput, it delivers continuous 24/7 operation with minimal operator intervention, reducing cost of ownership.  

AI-Driven Inspection

Artificial intelligence enhances AXM by enabling automated defect classification with higher sensitivity than traditional rule-based systems. Nordson’s AI models reduce the number of images required while improving detection accuracy, directly increasing throughput. This capability allows manufacturers to scale inspection without sacrificing quality. 

Metrology and Yield Optimization

Precise measurement of stand-off height and structural variation enables differentiation between failure modes and early identification of process drift. By providing repeatable, quantitative data, AXM enables closed-loop process control, helping manufacturers improve yield and reduce variability.

Conclusion

Nordson’s Automated X-ray Metrology represents a shift from inspection to intelligent, inline metrology. By combining high-resolution imaging, AI-driven analytics, and full production integration, Nordson delivers measurable improvements in yield, throughput, and reliability. As advanced packaging continues to evolve, AXM will play a critical role in enabling scalable, high-performance semiconductor manufacturing.

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