Sub-50 nm Multi-DOF Motion Systems for Advanced Packaging Integration

As AI, HPC, and hyperscale data centers push toward extreme compute density, larger reticle integration, andhigher HBM stacks, heterogeneous integration has become essential for achieving next-generation bandwidth, energy efficiency, and interconnect density.

These trends introduce new challenges in alignment accuracy, thermal stability, and substrate scalability - especially as the industry transitions from wafer-level to panel-level 2.5D/3D integration.

Three application domains are emerging as critical enablers: RDL Lithography, Advanced Packaging Metrology&Inspection, and Hybrid Bonding.

Meeting their accuracy and throughput requirements increasingly depends on motion architectures with deeply embedded high-resolution metrology. By tightly integrating precision multi-DOF measurement with multi-DOF actuation and advanced control, systems can achieve and maintain sub-50 nm positioning even under high dynamic and thermally varying conditions. This unified motion–metrology approach provides a more robustpath to the precision and stability required for advanced heterogeneous integration.

This presentation highlights how innovations in equipment architecture, 6-DOF actuation, MIMO control, and multi-DOF encoder technologies address emerging bottlenecks across chiplet-dense 3DIC, high-stack HBM, and co-packaged optical interfaces. Measured results demonstrate improvements in accuracy, stability, drift compensation, and throughput.

The talk concludes with a forward look at how integrated motion–metrology platforms will support larger substrates, tighter pitches, and the convergence of electrical and optical interconnects for future AI and data-center systems.

Key Technologies Covered

CORE TECHNOLOGIES AND INNOVATIONS

• Unified Motion–Metrology Architectures enabling consistent sub-50 nm alignment across multiple equipment types.
• Magnetic bearings and zero-stiffness architectures as the next breakthrough enabler for ultra-high-performance motion systems.
• Embedded High-Resolution Multi-DOF Metrology for real-time sensing under thermal and dynamic disturbances in critical processes, ensuring high accuracy through continuous measurement
• Thermal Management improving long term stability and tool-to-tool matching.

SYSTEM LEVEL APPROACHES

• Scalable Wafer-to-Panel Motion Methodologies
• @Equipment level: Reuses core architecture across substrate sizes.
• @Final product level: Supports panel-level Hybrid Integration with consistent precision.

APPLICATION AREAS ADDRESSED

• Advanced Lithography for RDL (Step and scan applications, overlay, pattern placement, large-substrate motion).
• Metrology & Inspection (Scanning and Step & Repeat, multi-DOF sensing, drift-free platforms).
• Hybrid and TCB Bonding (sub-50 nm alignment, multi-DOF force-controlled bonding, fine-pitch interconnects).
• Co-Packaged Optics (CPO) (6DOF optical-electrical alignment).
• Panel-Level 2.5D/3D Integration (scalable motion systems, uniformity, throughput).