Within the 2.5D viewer, you can define how much each layer is "extruded" in the vertical dimension, enabling you to represent the dielectric stack thickness.
Allows for visual inspection of the physical stackup, which is vital for identifying inter-layer connectivity issues. Setting Up and Using the 2.5D View
As integrated circuit (IC) designs grow in complexity, visualizing the physical layout becomes crucial. While 2D views are essential for editing, they don't always convey the vertical, three-dimensional relationship between layers, such as metal stack-ups or TSV (Through-Silicon Via) placements.
It cannot accurately simulate the physical structure of processes with significant non-planarization, such as STI (Shallow Trench Isolation) or advanced FinFET structures. Conclusion klayout 25d view
: Drag with the right mouse button to change the viewing angle (azimuth and elevation).
KLayout exposes its 25D functionality via Ruby and Python APIs. For advanced users, scripts can generate 25D snapshots for documentation or automated review.
# Extrudes layer 1/0 to a height of 200nm, starting at z=100nm z(input(1, 0), zstart: 0.1.um, height: 200.nm) Within the 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.
in the toolbar, often visualized as a stacked representation, or check the "View" menu.
Step 2: Configuring the Layer Stack (The .lyp or Script Setup) While 2D views are essential for editing, they
Here is a comprehensive guide to understanding, configuring, and leveraging the 2.5D view in KLayout to optimize your design-to-manufacturing workflow. What is the KLayout 2.5D View?
# Conceptual KLayout Python Macro for 25D Setup import pya # Define your process stack: (Layer, Source, Z-Start, Thickness) stack = [ ("Active", "1/0", 0.0, 0.3), ("Poly", "2/0", 0.3, 0.2), ("Contact", "3/0", 0.3, 0.5), ("Metal1", "4/0", 0.8, 0.4) ] # Apply to the active 25D view instance... # (Load this into KLayout's Macro Editor for direct integration) Use code with caution. Advanced Visualization Controls
: Navigate to Tools > 2.5d View > New 2.5d Script to open a template in the macro editor.
If you want to tailor this setup for a specific process, let me know: What are you currently using? Are you designing CMOS, MEMS, or Silicon Photonics ?