Klayout 25d View -

If you are looking to deepen your understanding of KLayout's capabilities, exploring the 2.5D viewer is a great next step.

Look for the or Aspect Ratio Modifier in your 25D plugin.

In KLayout, the (often provided by the "XSection" plugin) typically generates a static 3D model of a small slice of the layout. The 2.5D View is usually a more interactive, global view of the entire chip or a large area, making it better for general inspection rather than detailed process verification. Quick Tips for Setup

The 2.5D view is particularly valuable for backend-of-line (BEOL) debugging and verification:

: See how your metal layers stack up and identify vertical relative dimensions. Congestion Spotting klayout 25d view

As discussed in the KLayout Forum , you can take a traced net (e.g., a VDD/VSS network) and visualize it within the 2.5D view. This makes following a signal through multiple metal layers much easier compared to 2D.

The GDS layer number (e.g., 1/0 for Poly, 2/0 for Via1).

True 3D is blocked by opaque objects. To see lower layers through upper ones, use .

In the context of KLayout, "2.5D" refers to the ability to render 3D geometry based on 2D polygons extruded by defined heights, often utilized through the Cross-Section View and the 3D Viewer . If you are looking to deepen your understanding

: Each layer is assigned a zstart (base elevation) and a height (thickness).

in the toolbar, often visualized as a stacked representation, or check the "View" menu.

If you have not set up a layer stack, KLayout will prompt you to define one. You must specify:

The KLayout 2.5D View is a highly effective, cost-efficient solution for physical design verification. It moves the designer beyond the abstraction of GDSII layers into a representation of physical reality. This makes following a signal through multiple metal

Search for packages related to "3D" or "Cross Section" (such as the popular XSection script or KLayout 3D Viewer plugin). Click and restart KLayout if prompted. Step 2: Define Your Layer Stack (The Technology File)

The 2.5D script is a powerful extension of the DRC language, giving you a lot of control. The official documentation has been updated to reflect that the for setting up the 2.5D stack is through a technology's "Z Stack (2.5d)" component within the Technology Manager ( File > Manage Technologies ). This replaces the older method of manually writing scripts for each view, though the core concepts remain the same.

: The 2.5D view automatically extrudes the 2D shapes based on layer definitions. Net Tracing Integration

: Move, rotate, and zoom through your "3D" chip using camera-based controls. How to Set It Up