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

: A compass icon on the ground plane indicates the center of rotation and scaling. For detailed API documentation, refer to the D25View Class Reference on the official KLayout website sample script

Performance: Because it is not a full 3D mesh, the 2.5D view is very fast, allowing you to rotate and zoom into complex layouts in real-time. klayout 25d view

Pro tip: For extremely large layouts (>10 GB GDSII), create a quick 25D view by first using Hierarchy > Flatten on selected cells, then reduce detail with Edit > Selection > Convert to polygons with a tolerance of 0.01 µm.

Define Extrusions: Use specific DRC functions to build your stack: z(layer, [options]): Extrudes a specific layer. The 2

To "generate a piece" or see your design in this view, you typically need to follow these steps: 1. Enable the 2.5D Feature

While there is no single academic "paper" exclusively dedicated to the KLayout 2.5D view For detailed API documentation, refer to the D25View

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