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HT-R1

The World’s First Reflection-Based Holotomography System

  • ForOpaque substrates
  • Lateral resolution130 nm
  • Height sensitivity0.1 nm

Precision in Every Layer. Clarity in Every Interface.

The Tomocube HT-R1™ is the first holotomography system to operate in reflection mode, enabling non-destructive, high-resolution 3D inspection of opaque and transparent samples. It is optimized for advanced materials such as wafers, display panels, and semiconductor packages, delivering 3D structural insights beyond the reach of surface-only tools.
While traditional systems are limited to surface imaging, the HT-R1™ captures both surface and internal structures depending on the material’s transparency. For opaque surfaces, it delivers detailed 3D topography. For transparent layers, it reveals both surface and subsurface features—including multilayer films, embedded structures, and interface quality—all in true 3D.
With a lateral resolution of 130 nm, axial resolution of 0.294 μm (in air), and surface sensitivity down to 0.1 nm, the HT-R1™ detects subtle variations and hidden defects that are often missed by conventional tools. Its full-field imaging capability allows rapid data acquisition over large areas, making it ideal for high-throughput environments where speed and accuracy are critical.
HT-R1™ redefines reflection-mode inspection by combining precision, speed, and versatility—empowering manufacturers to improve yield, ensure process reliability, and meet the demands of next-generation semiconductor and display production.

Features

  • Larger Field-of-View
    Non-Destructive 3D Inspection of Surfaces and Embedded Structures
    Visualizes both surface and internal structures without cutting or damaging the sample.
  • Larger Field-of-View
    Ultra-High Resolution and Sensitivity
    Delivers 130 nm lateral resolution, 0.294 µm axial resolution (in air), and 0.1 nm surface sensitivity.
  • Larger Field-of-View
    High-Speed Full-Field 3D Acquisition
    Rapidly captures wide-area 3D data for efficient, high-throughput inspections.
  • Larger Field-of-View
    Stable Measurement Across Complex Multilayer Stacks
    Consistently measures complex structures with multiple materials and interfaces.

User benefits

  • Comprehensive 3D Visualization Beyond the Surface

    Beyond the surface-level information of conventional tools that provide only surface-level information, HT-R1™ offers true 3D imaging of surface topography and, in transparent layers, internal structure. No cutting, polishing, or physical contact is required. This allows repeated inspection of valuable or delicate samples without the risk of damage or contamination. Manufacturers can monitor product quality at any stage of production, confidently identifying internal defects or irregularities that may affect product performance. The ability to observe the full internal structure, layer by layer, ensures greater confidence in process control and long-term product reliability.

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  • Faster Inspection for High-Throughput

    Traditional high-precision inspection methods often require long scanning times, limiting their practicality for fast-moving production environments. The HT-R1™’s full-field 3D data acquisition rapidly covers large areas in a fraction of the time, making it highly effective for inline inspection, process monitoring, and real-time quality assurance—without sacrificing accuracy.

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  • Accurate Inspection of Complex Layer Combinations (Metal & Transparent Layers)

    In advanced packaging processes such as hybrid bonding, complex structures often include thin transparent dielectric layers positioned alongside metal features. Traditional optical inspection tools struggle with such configurations because differences in material properties cause variations in reflected light phase, and underlying structures beneath the transparent layers introduce further interference. The HT-R1™ addresses these challenges with reflection-based holotomography, accurately separating and visualizing both metallic and transparent regions—even in multilayer stacks with complex subsurface patterns. This enables precise control and verification of critical structures that are otherwise extremely difficult to inspect with conventional methods.

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  • Sub-Micrometer CD Measurement

    Despite operating in the visible light range, the HT-R1™ achieves 130 nm lateral resolution, enabling critical-dimension (CD) analysis at submicron scales below the reach of conventional optical inspection. This allows for precise analysis of fine features and narrow line widths at submicron scales, which are increasingly common in advanced semiconductor and packaging processes. Manufacturers can now perform high-resolution dimensional measurements without resorting to slower or destructive methods.

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Configuration

  • HT-R1 Module

    • HT imaging unit
    • Auto Focus Sensor
    • Low-Magnification Align & Review Optics
    • TomoPilot interface with Host
    HT-R1™ Module

Specifications

System typeReflection-based holotomography (world’s first and only)
Lateral resolution130 nm
Axial resolution0.294 µm (in air)
Height sensitivity0.1 nm
Target samplesOpaque substrates and mixed stacks — silicon wafers, metal layers, PCBs, RDL structures, hybrid bonding interfaces, CMP surfaces, micro displays (LEDoS / OLEDoS), transparent layers such as SiO₂
Measurement outputs3D surface topography, sub-micrometer critical dimensions (width / height / profile), Cu pad recess depth, bonding-interface and CMP roughness, multilayer film structure
ConfigurationsModule (HT imaging unit, autofocus sensor, alignment optics, TomoPilot host interface)
SoftwareTomoPilot (host integration) · TomoAnalysis MI (Metrology & Inspection — data viewing & quantitative analysis)
Dimensions & facility requirementsSee technical datasheet — available on request

* For the full specification sheet including dimensions, environmental and host-integration requirements, request the datasheet.

See your own sample in 3D

The fastest way to evaluate the HT-R1™ is with your sample, not ours.
Send us a sample — we measure it and review the full 3D dataset with you, free of charge.

  • 01Send your sample
    under NDA
  • 02We measure it and prepare
    a full 3D analysis report
  • 03Review the data live
    with our application engineer