Wafer Testing

Built on Deaote's 15+ years of expertise in precision mould and motion component manufacturing, the wafer testing features a rigid granite base, thermally stabilized structure, and anti-vibration design to ensure consistent performance in cleanroom environments (Class 100/1000). It supports seamless integration with wafer probers, optical microscopes, ATE (Automatic Test Equipment) systems, and data acquisition tools, making it ideal for both R&D and high-volume production testing of logic chips, memory devices, power semiconductors, and compound semiconductors (GaAs, SiC, GaN).

The modular design of the wafer testing allows for full customization of travel ranges, speed/acceleration parameters, and control interfaces (GPIB, USB, Ethernet) to match specific wafer testing workflows. Our solution enables semiconductor manufacturers to achieve higher testing accuracy, reduce false failure rates, and improve throughput—critical for meeting the miniaturization and performance demands of next-generation semiconductor devices.

Core Advantages

1. Sub-Micron 4-Axis Alignment Accuracy

Equipped with high-resolution linear encoders (0.05μm resolution) and direct-drive torque motors for Theta axis, the platform achieves ±0.5μm repeat positioning accuracy (X/Y), ±1μm absolute accuracy (X/Y), ±2μm Z-axis positioning accuracy, and 0.001° Theta axis angular accuracy. This ensures precise alignment between wafer dies and test probes/inspection optics, eliminating misalignment-induced errors in electrical characterization and optical inspection.

2. High-Speed & Stable Motion Control

Optimized motion control algorithms and air-bearing guideways enable high-speed movement (X/Y max speed: 150mm/s, Z-axis max speed: 50mm/s) with ultra-low settling time (≤30ms for X/Y, ≤50ms for Z). The non-contact drive mechanism eliminates mechanical wear and backlash, ensuring consistent motion stability over millions of cycles—essential for high-throughput wafer testing (up to 2500 dies per hour).

3. Thermally Stable & Anti-Vibration Design

Constructed with a natural granite base (thermal expansion coefficient ≤0.5×10⁻⁶/℃) and active anti-vibration isolation system, the platform minimizes positional drift caused by temperature fluctuations (≤0.1μm/℃) and external vibrations. The Z-axis features a precision ball screw drive with preload compensation to maintain stability during vertical positioning, critical for probe contact force control (0.1g to 100g) in wafer testing.

4. Wide Wafer Compatibility & Flexibility

The wafer testing supports wafer sizes from 4-inch to 12-inch with adjustable vacuum chucks and auto-centering mechanisms, no need for custom fixture replacement. It accommodates wafer thicknesses from 50μm to 800μm and is compatible with bare wafers, patterned wafers, and wafer-level packages (WLP), adapting to diverse semiconductor testing needs (DC parametric testing, RF testing, optical inspection).

5. Cleanroom-Compatible & Low Maintenance

Designed for Class 100 cleanroom operation, the wafer testing features a sealed enclosure with HEPA filtration to prevent particle contamination of wafers and test equipment. IP54 protection grade and lubrication-free air-bearing components reduce maintenance requirements, extending MTBF (Mean Time Between Failures) to ≥35,000 hours under standard operating conditions.

6. Easy Integration & Customization

Compatible with industry-standard control software and communication protocols (GPIB, RS232, Ethernet/IP), the platform integrates seamlessly with existing wafer test systems. Suzhou Deoute offers full customization of travel ranges (X/Y: 100×100mm to 300×300mm; Z: 50mm to 150mm), Theta axis rotation range (±5° to ±10°), and chuck temperature control (-40℃ to 200℃) to meet unique customer requirements.

Technical Specifications

Application Scenarios

Engineered for 4-axis wafer testing and inspection, our XYZT platform is widely used in the following semiconductor applications:

● Wafer Probing: Electrical characterization (DC/AC/RF) of logic chips, DRAM/NAND memory devices, and power semiconductors (MOSFET, IGBT)

● Optical Inspection: Wafer-level defect detection, pattern alignment, and metrology for advanced semiconductor manufacturing

● Reliability Testing: High/low temperature cycling, burn-in testing, and lifetime characterization of compound semiconductors (GaAs, SiC, GaN)

● Wafer-Level Packaging (WLP): Alignment and bonding of wafer-level packages for consumer electronics and automotive applications

● R&D Testing: Prototyping and validation of new semiconductor designs in lab environments (customizable for small-batch testing)

About Deaote

Suzhou Deaote Precision Mould Co., Ltd. is a leading high-tech enterprise specializing in R&D, manufacturing, and sales of precision motion platforms, custom moulds, and semiconductor testing components. With over 15 years of expertise in precision manufacturing, we serve global customers in the semiconductor, electronics, and industrial automation sectors across Europe, North America, Asia, and beyond.

Our XYZT inspection motion platform leverages our core competencies in precision mould design and motion control engineering to address the unique challenges of semiconductor wafer testing. We provide end-to-end solutions—from custom platform design and prototyping to on-site installation, calibration, and lifetime technical support—ensuring our products meet the strictest industry standards for precision and reliability.

Committed to "Precision Drives Progress, Innovation Creates Value", Deaote is ISO 9001:2015 certified and invests 15% of annual revenue in R&D to develop next-generation motion solutions for the semiconductor industry. Our global service network ensures fast response times and local support for our international customers.