In KLayout, the is a visualization feature that transforms flat 2D layout patterns into a semi-3D representation by "extruding" layers vertically. This is particularly useful for visualizing wiring congestion, checking the relative vertical dimensions of a process stack, or inspecting complex via connections in a more intuitive spatial context. Key Features and Requirements Extrusion Mechanism
Define Extrusions: Use specific DRC functions to build your stack: z(layer, [options]): Extrudes a specific layer. klayout 25d view
The 2.5D view in KLayout is a specialized visualization mode that bridges the gap between traditional flat 2D mask layouts and full 3D process modeling. By extruding 2D polygons vertically based on defined thickness and elevation, it provides designers with a spatial understanding of the material stack without the computational overhead of true 3D topography. The Core Concept: Extrusion over Topology In KLayout, the is a visualization feature that
Unlike a true 3D CAD program, KLayout uses "pseudo-3D" or 2.5D. This means it takes the 2D shapes on your layers and extrudes them vertically according to a Layer Properties file or a Technique definition. It is particularly useful for checking overlaps, vias, and structural heights in MEMS, photonics, or IC design. Key Features Left-click + drag – Rotate view (azimuth and elevation)