Klayout: 25d View Extra Quality

Mastering the KLayout 25D View: A Deep Dive into 2.5D Visualization for IC and MEMS Design

Introduction: The Limitations of Flat Layouts

For decades, integrated circuit (IC) and microelectromechanical systems (MEMS) designers have relied on two-dimensional (2D) tools to create complex physical layouts. KLayout, the open-source, high-performance layout viewer and editor, has become an industry favorite precisely because of its lightning-fast 2D rendering and robust polygon manipulation. However, as semiconductor technology pushes into advanced nodes (5nm, 3nm) and heterogeneous integration (chiplets, TSVs, and MEMS structures), the limitations of flat, top-down viewing become painfully apparent.

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OpenGL Support: The 2.5D view is only available if your KLayout version was compiled with OpenGL support. Mastering the KLayout 25D View: A Deep Dive into 2

So next time you’re hunting for a mysterious short or explaining your floorplan to a colleague, tilt your view, extrude those layers, and see your design rise off the plane. Vertical scaling factor – Controls how tall each

  1. Vertical scaling factor – Controls how tall each layer appears. A higher factor exaggerates layer separation, useful for distinguishing stacked metal lines.
  2. Layer transparency – Adjustable per layer, allowing the user to see through upper layers to lower-level details.
  3. Lighting and shadows – Simple directional lighting helps reinforce depth perception.
  4. Rotation and tilt – The view can be panned, rotated, and tilted continuously, unlike static isometric views in some other tools.

Practical Limits: The current implementation handles approximately 100,000 polygons before performance significantly degrades. How to Use the 2.5D Viewer

Example Python Script (Auto-extrude by layer name):