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DUNE 100 Product
Semiconductor Fab Solutions

ZEISS DUNE 100

Global wafer shape control for advanced semiconductor manufacturing

Driven by complex layer stacks, thermal cycles and heterogeneous materials throughout the semiconductor process flow, wafers are exposed to increasing stresses that result in significant wafer warpage. With the rising demands of advanced packaging and 3D integration, these deformations become even more critical, impacting focus, overlay and ultimately overall yield and reliability.

ZEISS DUNE 100 enables active wafer shape control with integrated, high‑precision metrology, allowing fabs to measure and correct global wafer warpage individually for each wafer at every critical step. By delivering full‑field wafer topography from front‑end to back‑end and advanced packaging, DUNE® 100 provides fabs with the capability to stabilize focus and overlay, safeguard sensitive process windows.  

  • Wafer shape correction up to the wafer edge
  • Warpage optimization per individual wafer
  • Integrated wafer topography metrology
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Color-coded 3D surface plots of symmetric and freeform optical shapes, illustrating variations in optical surface geometry.

Wafer warpage as a limiting factor

Stress, complex stacks and tight overlay budgets

Modern semiconductor processes introduce multiple high-stress layers, deep structures and complex stacks that can significantly deform the wafer. Warpage accumulates over the wafer life cycle, from bare substrate through front-end device formation, back-end interconnects and advanced packaging steps such as wafer-to-wafer bonding. Global warpage on a wafer can manifest as second‑order wafer shapes such as bowl, umbrella or cylinder, or as third‑order shapes such as saddle.

Excessive wafer shape deviations can lead to overlay errors, pattern placement issues and challenges in lithography and bonding. In severe cases, wafers crack or go out of specification, reducing yield and increasing cost. To maintain process windows and enable next-generation device concepts, fabs require a robust way to measure and actively correct wafer shape, rather than only monitoring it.

  • Circular color gradient heatmap showing a symmetric optical surface, with a blue center transitioning to red at the outer edge.
  • Circular color gradient map with a smooth diagonal shift from blue to green, illustrating an asymmetric optical surface.
  • Circular color gradient heatmap showing a symmetric optical surface, with a blue center transitioning to red at the outer edge.

    Before wafer warpage control
  • Circular color gradient map with a smooth diagonal shift from blue to green, illustrating an asymmetric optical surface.

    After wafer warpage control

Wafer shape control with integrated metrology

ZEISS DUNE 100 is a dedicated wafer shape control solution. It combines an inline metrology system that measures wafer warpage before and after processing with a correction module.

The system performs a pre‑process topography measurement and calculates a wafer‑specific correction pattern that compensates the existing warpage in a defined way. A post‑process measurement verifies the resulting wafer shape and provides a complete report for process tracking.

DUNE® 100 is designed for full fab automation, including automated wafer handling and communication via standard fab automation protocols. The system can be integrated directly into process flows, enabling wafer shape optimization as part of the regular production sequence.

Close-up of a silicon wafer with densely packed microchips arranged in a regular grid pattern, displaying shimmering blue and purple tones.

Wafer shape correction

Controlled wafer shape modification

The core of ZEISS DUNE 100 is a wafer shape control technology that modifies global warpage without altering the front-side pattern.

DUNE® 100 compensates low-frequency wafer shape components such as bowl‑, umbrella‑ and saddle‑type warpage. The process acts inside the wafer material and is designed to maintain backside surface characteristics and device layers.

A dedicated software environment tightly links wafer topography metrology and process control. Wafer‑specific shape measurements are used to calculate the required correction pattern and to execute the correction step as a single, integrated operation. This enables wafer shape correction on an individual wafer basis instead of relying on generic, lot‑level recipes.  

Application areas along the wafer lifecycle

Wafer shape control across front-end, back-end and advanced packaging

  • 3D memory and logic

    Close-up of a silicon wafer with densely packed microchips arranged in a repeating grid pattern, showing reflective, multicolored surfaces

    Three-dimensional memory and logic concepts, for example 3D NAND, DRAM and gate-all-around devices, rely on complex stacks and deep structures that introduce significant global warpage. DUNE® 100 applies wafer shape control to these applications by compensating low-frequency components such as bowl-, umbrella- and saddle-type distortions. This supports more stable conditions for lithography, etch and subsequent process steps and helps maintain device performance across the full wafer.

  • Advanced packaging and wafer bonding

    Close-up of a semiconductor chip with intricate circuit patterns in vivid green, blue, and purple tones.

    In advanced packaging, wafer-to-wafer bonding schemes for high-bandwidth memory, stacked system-on-chip or other 3D IC concepts are highly sensitive to wafer shape and in-plane distortion. DUNE® 100 can be used to optimize wafer shape prior to bonding, improving the global matching conditions between wafers. By performing corrections on a wafer-by-wafer basis, the system supports tighter overlay budgets and more homogeneous bonding interfaces.

  • Further wafer and panel applications

    Close-up of a semiconductor sensor chip with a square, rainbow-colored surface framed by electrical contact pins

    Beyond 3D memory, logic and wafer-to-wafer bonding, DUNE® 100 can be applied wherever global warpage and stress effects impact process robustness, for example in image sensors, power devices and other two- and three-dimensional integrated circuits. The underlying concept of laser-based wafer shape control with integrated topography metrology is also being explored for panel-type carriers and for additional die-level overlay use cases, extending its applicability beyond conventional wafer formats.

Anything is imaginable – a lot is possible

ZEISS enables semiconductor manufacturers worldwide to establish stable processes along the entire wafer lifecycle. As device architectures become more complex and three-dimensional, control of global wafer shape is increasingly critical for overlay performance, bonding quality and yield.

ZEISS DUNE 100 is a wafer shape control system that combines warpage correction with integrated wafer topography metrology. It is designed to optimize wafer shape on an individual wafer basis and to support robust front-end, back-end and advanced packaging processes.

For further information please contact our experts. 

Contact to ZEISS SMT