TGV Laser Micro-Via Drilling System | 5µm Vias, 1:100 Aspect Ratio
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Wafer‑Level TGV Laser Micro‑Via Drilling System for Advanced Glass Substrate Packaging

Author: Dr. Jian Li, Senior Process Engineer, 14+ years in IC packaging automation

Overview:
The Wafer‑Level Through‑Glass Via (TGV) laser drilling system enables ultra‑fine, high‑aspect-ratio micro-vias on glass substrates. Ideal for next-generation advanced packaging, display ICs, MEMS, and heterogeneous integration, this platform addresses the limitations of traditional mechanical and chemical drilling with unmatched precision, speed, and substrate compatibility.

    Ultra-Fine Vias

    ≤5 µm diameter, aspect ratio up to 1:100 for high-density interconnects.

    High Throughput

    ≥5000 points/s for mass production & high-volume manufacturing.

    Multi-Material

    Quartz, borosilicate, soda‑lime, aluminosilicate glass.

    Multi-Shape Capability

    Round, square, blind, through, micro‑trench vias.

    Precision

    Repeatability ≤±1 µm; pattern accuracy ≤±3 µm.

    Automated Handling

    Supports 4–12 inch wafers, basket-type loading.

    Core Technologies

    Laser Modification Physics
    Controlled laser-induced micro-structuring for clean vias.
    High-Precision Motion Control
    XY stage repeatability ≤1 µm.
    Thermal-Stress Optimization
    Minimizes substrate cracking & residual stress.
    Automated Wafer Handling
    4–12 inch, basket-type load/unload, FOUP compatible.

    Technology Comparison

    Technology Via Size Aspect Ratio Material Compatibility Notes
    Laser TGV ≤5 µm Up to 1:100 Quartz, Borosilicate, Soda-lime, Aluminosilicate Ideal for high-density packaging
    Mechanical Drilling >30 µm <1:10 Limited Slow, risk of chipping
    Chemical Etching 10–50 µm 1:5–1:20 Glass only Poor shape control, isotropic
    Ultrasonic Drilling >20 µm <1:10 Limited Not suitable for fine-pitch ICs

    Technical Specifications

    Substrate Size4–12 inch round or square glass wafers
    Loading MethodAutomatic basket-type / cassette
    Processing MethodFixed laser + high-precision XY motion platform
    Platform Speed≤1000 mm/s
    Minimum Via Diameter5 µm
    Max Aspect Ratio1:100
    Platform Repeatability≤±1 µm
    Positioning Accuracy<±2 µm
    Pattern Accuracy≤±3 µm @ 300 mm field
    Throughput≥5000 points/s

    Applications

    Glass-based IC packaging Display driver ICs High-density interposers MEMS and sensor modules Optical and RF packaging HPC & AI accelerators (glass interposers)

    Selection Guide

    Choose this system if your production requires:

    • Ultra-fine vias ≤5 µm
    • High aspect ratio (1:100)
    • Multi-shape drilling (blind, through, trench)
    • High-volume throughput (≥5000 points/s)
    • Multi-glass substrate compatibility
    • Tight alignment precision (<±3 µm)

    Future Trends

    Frequently Asked Questions

    Q1: What is the smallest via size achievable?
    A: 5 µm, enabling high-density interconnects for advanced glass packaging.
    Q2: Which glass materials are compatible?
    A: Quartz, borosilicate, soda‑lime, aluminosilicate glass, and more.
    Q3: What aspect ratios are achievable?
    A: Up to 1:100 for deep, narrow vias without cracking.
    Q4: How fast is the drilling throughput?
    A: ≥5000 points/s, suitable for mass production and high-volume fabs.
    Q5: Which applications benefit most?
    A: Glass IC packaging, display drivers, MEMS, high-density interposers, AI accelerators.
    Q6: Does the system handle blind & through vias?
    A: Yes, multi-shape capability: round, square, blind, through, and micro-trench vias.

    Unlock the Potential of Glass Substrate Packaging

    Precision TGV laser drilling system engineered for next-gen IC substrates, interposers, and 3D heterogeneous integration.

    ≥5000 vias/s 5µm / 1:100 AR ±1µm repeatability

    Contact our engineering team for process demonstration & integration support.