RT-500 Wafer Metrology System: Why Integrated Precision is Essential for R&Ds
In the global semiconductor race—stretching from the innovation hubs of Taiwan and Korea to emerging sectors in India and Southeast Asia—the ability to rapidly verify wafer integrity is a critical competitive advantage. As AI-driven demand pushes for complex materials like SiC, GaN, and specialized glass substrates, the “Metrology Gap” between thickness verification and surface quality analysis has become a significant bottleneck for R&D centers.
The RT-500 Wafer Metrology System is a specially designed passive non-contact metrology system that bridges this gap by measuring both wafer thickness and surface roughness within a single, integrated platform.
The Challenge: The Hidden Bottleneck in Material Characterization
Most metrology workflows are fragmented. Measuring a wafer’s Total Thickness Variation (TTV) usually requires one setup, while analyzing Surface Roughness (Ra/Rq) requires another. This redundancy doesn’t just increase CAPEX; it introduces more wafer handling, increasing the risk of contamination and micro-damage.
For facilities developing next-gen sensors or power semiconductors, this “Metrology Gap” slows down the iteration cycle. They need a system that offers the same high-end sensing technology found in inline tools but optimized for versatile, batch-style research.
The Solution: RT-500 Universal Metrology Platform
The RT-500 is a specially designed passive non-contact metrology system that can measure wafer thickness and surface roughness in one measurement system. By integrating two distinct sensing modalities, it provides a holistic view of wafer geometry and surface topography.

Key Technical Advantages for Professionals:
-
1. Dual-Mode High-Precision Sensing:
-
Nanometer Thickness Control: Using a fixed dual capacitance probe sensor specified in SEMI standards, the RT-500 measures semiconductor wafers with a high precision of 10nm resolution.
-
WLI Surface Analysis: For roughness, the system utilizes an economical White Light Interferometer (WLI) to achieve sub-micron precision.
-
Extreme Vertical Resolution: The WLI module provides a maximum Height Resolution of 1nm, allowing for the analysis of ultra-fine surface textures.
-
-
2. Versatility Across Materials and Sizes
-
Wide Coverage: The system handles everything from small pieces to 4″, 6″, 8″, and 12″ wafers.
-
Complex Samples: It is engineered for excellent measurement performance on transparent, semi-transparent, and milky-colored samples.
-
Advanced Topography: Beyond simple metrics, it enables high-speed, high-resolution 3D topography measurement for detailed defect analysis.
-
-
3. Optimized for the Modern Lab Environment:
-
Flexible Handling: Features a 780mm x 700mm work plate table with manual loading and position change for maximum user control.
-
Smart Software: Powered by a Windows 10-based dual SW system, providing an intuitive GUI for both thickness and roughness data management.
-
Stable Infrastructure: Built on an Al steel frame with anti-vibration pads to ensure measurement integrity in diverse lab settings.
-
Strategic Value: Maximizing ROI in Asia’s Semiconductor Hubs
Investing in the RT-500 is a strategic move to optimize your facility’s yield and research throughput. By consolidating two essential metrology functions into one compact system, labs can:
-
Reduce Scrap Rates: Detect scratch, abrasion, and defects at the earliest stage.
-
Accelerate Recipe Development: Fast system setup and 5-point bow measurement allow for immediate process feedback.
-
Lower Total Cost of Ownership: An economical device that replaces the need for two separate specialized tools.
“In the world of high-performance semiconductors, you can only manage what you can accurately measure.” The RT-500 provides the scientific foundation to ensure your R&D projects move from concept to production with absolute confidence.
Driving Transformative Advancements KOVIS Semiconductor MI Technology
We are committed to empowering global innovators with breakthrough Metrology and Inspection expertise. For technical consultations, sample testing, or a formal quotation:
Contact our Global Sales Team: 📧 jennifer.song@kovistek.com (Assistance available in English)
