FPC Visual Inspection System AVI800Z by Zhengye

Overview

The Zhengye AVI800Z FPC Visual Inspection System is a high-precision, automated optical inspection platform engineered for quality assurance in flexible printed circuit (FPC) manufacturing. Unlike conventional laser cutting or drilling equipment, the AVI800Z is specifically designed for post-processing visual defect detection—not material ablation—on finished or semi-finished FPC substrates, coverlays (CVL), rigid-flex boards (RF), and thin multilayer PCBs. It integrates high-resolution industrial imaging, programmable stage motion control, and calibrated illumination to perform non-contact, repeatable surface inspection at micron-level resolution. The system operates under ISO Class 8 (100,000) cleanroom conditions to minimize particulate interference during inspection, ensuring measurement integrity for critical microstructural features such as trace edge roughness, solder mask voids, pad misalignment, and coverlay registration errors. Its architecture supports integration into inline production lines via standard SECS/GEM or Modbus TCP protocols, enabling real-time pass/fail classification and SPC data export.

Key Features

• Automated sample handling with precision fixture-based loading and conveyorized transport—eliminates manual placement and reduces operator-induced variability.
• High-stability XYZ motion platform with ±2 µm repeatability and 500 mm/s traverse speed, optimized for rapid field-of-view stitching across large-area FPC panels (up to 200 × 270 mm).
• Dual-wavelength coaxial and oblique LED illumination modules, configurable per inspection zone to enhance contrast for diverse defect types—including micro-scratches, carbon residue, delamination halos, and solder mask thinning.
• Embedded vision engine supporting real-time image preprocessing (flat-field correction, adaptive thresholding, sub-pixel edge detection) and rule-based defect classification without reliance on cloud infrastructure.
• Modular optical head accommodating interchangeable telecentric lenses (0.5× to 5× magnification) and optional UV-enhanced CMOS sensors for enhanced resolution of sub-20 µm features.
• Compliance-ready audit trail generation: timestamped image capture logs, user access records, parameter change history, and calibration event tracking aligned with GLP and ISO 9001 documentation requirements.

Sample Compatibility & Compliance

The AVI800Z accommodates standard FPC substrates including polyimide (PI)-based flex circuits (thickness range: 25–125 µm), adhesiveless and adhesive-type coverlays, and hybrid rigid-flex laminates up to 1.6 mm total thickness. Fixture adaptability supports roll-to-roll pre-cut panels, palletized arrays, and individually framed units. All mechanical and optical components conform to IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emission) standards. The system’s software architecture supports 21 CFR Part 11-compliant electronic signatures and audit trails when deployed in regulated medical device or aerospace electronics manufacturing environments. Calibration procedures follow ISO/IEC 17025 guidelines, with traceable reference artifacts available for annual third-party verification.

Software & Data Management

The proprietary VisionInspect™ software suite provides a unified interface for recipe management, defect annotation, statistical process monitoring, and MES integration. Inspection recipes define region-of-interest (ROI) grids, tolerance thresholds, classification logic trees, and reporting templates—all stored in encrypted SQLite databases with SHA-256 hashing. Raw images are archived in lossless TIFF format with embedded EXIF metadata (exposure time, lens ID, stage coordinates). Data export options include CSV (for SPC charting), XML (for FA database ingestion), and PDF reports compliant with IPC-A-600 and IPC-6013 acceptance criteria. Optional OPC UA server module enables bidirectional communication with factory-wide SCADA and QMS platforms.

Applications

• Final QA screening of rolled or stamped FPCs prior to packaging—detecting edge burrs, incomplete coverlay coverage, and laser-induced carbonization zones.
• Process validation for CVL lamination and thermal press cycles—quantifying bond-line uniformity and identifying micro-void clusters.
• Root-cause analysis support in failure analysis labs—correlating optical anomalies with cross-sectional SEM/EDS results.
• Supplier qualification audits—standardized inspection protocols applied across multiple vendor lots to ensure consistent dimensional and surface finish compliance.
• Design for Manufacturability (DFM) feedback loop—aggregating defect frequency maps to guide layout optimization for high-yield FPC fabrication.

FAQ

Is the AVI800Z capable of inspecting double-sided FPCs without manual flipping?
Yes—the system supports programmable Z-axis focus stacking and dual-camera top/bottom imaging modules (optional configuration), enabling synchronized inspection of both conductor layers in a single pass.
Can inspection recipes be transferred between AVI800Z units across different production sites?
Yes—recipes are portable via encrypted USB key or network share and retain full metrological traceability when loaded onto units with matching hardware revision and calibration status.
Does the system meet IPC-A-610 or IPC-J-STD-001 acceptability criteria for flex circuit inspection?
While the AVI800Z does not enforce acceptance rules autonomously, its measurement outputs (e.g., defect size, location, contrast ratio) are fully compatible with IPC-A-610 Revision H and J-STD-001E classification frameworks when used with certified operator-defined judgment criteria.
What maintenance intervals are recommended for optical calibration and stage alignment?
Zhengye recommends quarterly verification using NIST-traceable step gauges and photomask standards; full recalibration is advised annually or after any impact event exceeding 5 g acceleration.
Is remote diagnostics and firmware update supported?
Yes—via secure TLS-encrypted SSH tunnel; all updates undergo cryptographic signature validation prior to installation, and rollback capability is retained for the previous two firmware versions.