Rotate, pan, and zoom in perspective mode. You can tilt from a top-down orthographic view to a nearly horizontal angle, making it easy to spot, for instance, a metal line crossing over a polysilicon gate with minimal clearance.
Here’s a detailed, engaging write-up about — a powerful feature set within the popular open-source EDA tool, KLayout. Beyond Flat Design: Unlocking KLayout’s 2.5D Capabilities For years, KLayout has been a cornerstone in the semiconductor design community — a fast, scriptable, and highly reliable viewer and editor for GDS/OASIS layouts. Most users know it as a “2D tool,” perfect for inspecting polygons, layers, and hierarchies. But scratch the surface, and you’ll discover a powerful 2.5D engine that transforms how you visualize and analyze integrated circuit layouts. What Does “2.5D” Mean in KLayout? In the context of layout tools, 2.5D refers to the ability to visualize multiple layers in a pseudo-3D perspective, where each layer is extruded vertically with a user-defined height and color. This is not full 3D (no sidewall angles or complex material modeling), but it provides enough depth to reveal overlapping structures, vertical clearances, and routing congestion at a glance — something flat 2D views obscure. Key Features of KLayout’s 2.5D View 1. Extruded Layer Rendering Each design layer (e.g., Metal1, Poly, Active) can be assigned a physical thickness and a translucent or solid color. When you tilt the view, layers stack up like a multi-story building, giving an immediate sense of vertical proximity and overlap. klayout 2.5d
So next time you’re staring at a dense tangle of metal and vias in flat 2D, hit Ctrl+Shift+3 and see your design rise off the page. Rotate, pan, and zoom in perspective mode
Unlike exporting to a separate 3D tool, KLayout’s 2.5D view is interactive. You can click on structures, measure distances, and query properties without leaving the environment. Selection highlights pop out in 3D space. Beyond Flat Design: Unlocking KLayout’s 2
