Klayout 25d View Jun 2026

KLayout's 2.5D view is more than just a gimmick—it is a robust analytical engine that turns raw layout data into an insightful, three-dimensional model. While it requires a bit of scripting to unlock its full potential, the flexibility and control it offers for visualizing complex multi-layer designs are unparalleled in a free, open-source EDA tool.

Integrated circuit (IC) layout design requires absolute precision. While traditional 2D GDSII/OASIS layout viewers show a flat, top-down view of complex multi-layer chips, detecting vertical alignment issues can be incredibly difficult. This is where the becomes an essential tool for layout engineers, mask designers, and MEMS researchers.

In KLayout (usually version 0.26 and later), you can find this under: klayout 25d view

Whether you are using the or a specific third-party macro plugin? Share public link

Click and drag the middle mouse button (or hold Shift + Left Click) to slide the view horizontally or vertically. KLayout's 2

: The total vertical thickness of the extruded layer material.

KLayout has long been the industry standard for open-source layout viewing and editing, prized for its speed and extensibility. While traditionally a 2D tool, recent versions have significantly enhanced their visualization capabilities. By leveraging the height property of layers, KLayout transforms flat GDSII/OASIS files into pseudo-3D visualizations. This review explores the utility, performance, and implementation of this feature, concluding that while it is not a full DRC-accurate 3D process simulator, it is an indispensable tool for design architecture visualization and cross-sectional debugging. While traditional 2D GDSII/OASIS layout viewers show a

The KLayout 2.5D view is an indispensable diagnostic tool for modern mask designers, CAD engineers, and researchers. By transforming flat, abstract colored polygons into a physical, vertical representation of a silicon wafer, it democratizes the understanding of complex semiconductor processes. Spend the time to map out your technology file's heights and thicknesses once—the visual clarity it brings to your subsequent tape-out workflows will be well worth the investment.

In the context of Electronic Design Automation (EDA), "25D" (or 2.5D) refers to a visualization method where 2D polygons are extruded vertically based on a assigned "height" and "thickness." Unlike a true 3D engine that accounts for physics, deposition, and etching angles, KLayout’s 25D view is a geometric extrusion.

Review your height ( z_start ) parameters in your setup file. Ensure that Metal 2 is defined with a higher baseline than Metal 1.