Zhengye X-Ray Inspection System for Semiconductor Packaging

Overview

The Zhengye X-Ray Inspection System for Semiconductor Packaging is a high-precision, industrial-grade non-destructive testing (NDT) platform engineered for real-time internal structural analysis of semiconductor packages, lead frames, wire bonds, solder joints, and encapsulated die assemblies. Based on the fundamental principle of X-ray transmission imaging—where differential X-ray attenuation across materials of varying atomic density generates contrast in the resulting radiograph—the system delivers high-resolution 2D projection images suitable for failure analysis (FA), process validation, and incoming quality control. Unlike generic X-ray systems designed for PCB or battery inspection, this instrument is purpose-built with optimized geometry, radiation shielding, and detector calibration specifically for sub-100 µm feature resolution in IC packaging contexts—including QFN, BGA, WLCSP, and SiP modules. Its fixed-stage design with motorized triaxial source-detector kinematics ensures mechanical stability critical for repeatable metrology-grade measurements under controlled laboratory or cleanroom environments.

Key Features

• Triaxial Motorized Kinematics: Independent, programmable motion control of X-ray tube and image intensifier along X, Y, and Z axes via precision ball-screw mechanisms and synchronous stepper drives—enabling precise focal spot positioning, magnification tuning, and depth-of-field optimization without stage movement.
• 2.5D Metrology Suite: Integrated measurement engine supports calibrated linear distance, circle diameter, concentricity between multiple circles, point-to-center offset, and angular deviation—all traceable to NIST-traceable reference standards and compliant with ISO 17025 metrological practices.
• CNC Path Programming: User-defined inspection sequences can be recorded, edited, and replayed for batch consistency; ideal for low-volume, high-mix production lots requiring rapid re-inspection of known defect locations or critical interconnect zones.
• Real-Time Navigation Interface: Large-scale overview window provides live thumbnail mapping of the entire field of view; mouse-click navigation enables sub-pixel target localization with automatic mechanical slewing—reducing operator dependency and minimizing setup time per sample.
• Digital Image Processing Pipeline: Supports DICOM, TIFF, BMP, and PNG formats; includes real-time contrast enhancement, noise suppression, edge sharpening, histogram equalization, and dynamic range expansion—ensuring optimal visualization of low-contrast features such as voids in solder bumps or delamination at die-attach interfaces.

Sample Compatibility & Compliance

The system accommodates standard semiconductor package formats up to 300 mm × 300 mm footprint, including wafer-level substrates (with optional vacuum chuck), singulated dies, and full-panel assemblies. It meets IEC 61000-6-3 (EMC emissions), IEC 61000-6-2 (immunity), and GB/T 18801–2015 (Chinese national standard for industrial X-ray equipment safety). Radiation shielding complies with GBZ 117–2020 for occupational exposure limits. While not certified to ISO/IEC 17025 out-of-the-box, the system’s software architecture supports audit-ready logging required for GLP/GMP-aligned FA labs—including timestamped image capture, user authentication, and change history tracking.

Software & Data Management

The proprietary inspection software runs on Windows 10 IoT Enterprise and implements role-based access control (RBAC) with configurable user permissions. All measurement data, annotated images, and CNC programs are stored in an encrypted SQLite database with automated daily backup scheduling. Export options include CSV for SPC integration, PDF reports with embedded metadata (exposure parameters, magnification factor, pixel size), and DICOM-compliant archives compatible with enterprise PACS infrastructure. The software adheres to FDA 21 CFR Part 11 requirements for electronic records and signatures when configured with digital certificate authentication and audit trail activation.

Applications

• Wire bond integrity assessment (lift-off, shorting, misbonding)
• Solder joint void analysis in flip-chip and BGA interconnects
• Die attach uniformity and void detection
• Mold compound delamination and crack propagation monitoring
• Lead frame warpage and plating thickness estimation
• Post-reflow and post-assembly defect screening in high-reliability automotive and aerospace ICs

FAQ

Is this system qualified for use in Class 1000 cleanrooms?
Yes—the enclosure is constructed from stainless steel and anodized aluminum with sealed motion components; optional HEPA-filtered air purge kits are available for ISO Class 6 (Class 1000) environments.
Can the software interface with MES or factory automation systems?
Yes—via TCP/IP-based API (RESTful endpoints) and OPC UA server module, enabling bidirectional communication with Siemens SIMATIC IT, Rockwell FactoryTalk, or custom MES platforms.
What is the minimum detectable void size in solder joints?
Under optimal geometric magnification (≥5×) and with 90 kVp tungsten-target X-ray source, the system resolves voids ≥25 µm in diameter with >90% detection probability at 95% confidence level, per ASTM E2737-20 guidelines.
Does the system support automated pass/fail classification using AI algorithms?
Basic rule-based classification is included; deep learning inference models (e.g., CNN-based defect segmentation) can be deployed via optional Python SDK integration with customer-provided training datasets.
Is remote diagnostics and firmware update supported?
Yes—secure TLS-encrypted remote access is enabled through built-in VNC server with two-factor authentication; over-the-air firmware updates are delivered via signed package verification and rollback-safe partitioning.