View: Klayout 25d

: You need a script that defines the material stack. This script specifies the for each layer. : Many modern Open-PDKs, such as the IHP SG13G2 PDK , already include pre-configured 2.5D viewer settings. : Once your script is ready, select Tools > 2.5D View Navigating the 3D Space

Once the window opens, you may need to configure a . This is a simple mapping where you tell KLayout: "Layer 1/0 has a height of 0.5µm and starts at an elevation of 1.0µm."

You need a DRC-based script (Design Rule Check) to define the stackup, specifically importing/generating polygon layers. 2. Creating a 2.5D Script To create a new script:

A dedicated list on the right allows you to toggle specific material groups on or off, which is useful for "peeling back" upper metal layers to see lower-level transistor structures. klayout 25d view

Instead, the 2.5D view works by by a specified, configurable thickness. This allows you to see the "sandwich" structure of your chip. It provides an excellent, efficient way to visualize: Wiring congestions in a three-dimensional space.

It is much easier to see if a via is "floating" or if a metal layer is missing its underlying insulation in a 2.5D space than by looking at overlapping flat colors.

If you want to tailor this visualization to your workflow, tell me: : You need a script that defines the material stack

To help tailor this setup for your specific workflow, tell me:

To get started with the 2.5D view in KLayout, follow these steps, typically configured via technology files (like the Sky130 PDK): Load your design in KLayout.

Unlike a full 3D engine that might require complex solid modeling, the 2.5D view works by "extruding" your 2D shapes based on defined height and elevation parameters. Flat polygons (X and Y coordinates). : Once your script is ready, select Tools > 2

Once the stack-up is configured, click or Render . A new viewport window will appear showing your design in a 3D perspective. Rotate: Left-click and drag your mouse to spin the model.

Enhancing GDSII/OASIS Visualization: A Deep Dive into KLayout 25D View