z(input(2, 0), height: 300.nm)
You’ll never look at a flat GDS the same way again.
The 25D view relies on OpenGL. On Linux, ensure libgl1-mesa-glx is installed. On Windows, the standard install includes software emulation, but hardware acceleration is recommended. In KLayout, go to View > 2.5D View . If grayed out, your build lacks OpenGL.
True 3D is blocked by opaque objects. To see lower layers through upper ones, use .
KLayout’s advantage is – you do not leave the tool. No export, no conversion, no separate window management (beyond one extra view). klayout 25d view
The 25D View requires a technology file or a specific layer properties configuration to tell KLayout how high each layer sits in space. Step 1: Access the 25D View Menu Open your layout file (GDS/OASIS) in KLayout. Navigate to the top menu bar.
Objects flicker or have gaps between them. Solution: This is "Z-fighting" (two layers at exactly the same height). Set a micro offset (e.g., Metal1 height 30, Via height 30.001). Alternatively, lower your screen's anti-aliasing settings.
Navigation revolves around moving a camera relative to a pivot point marked by a compass icon. Mouse/Keyboard Input Right-click and drag Move Pivot (Translate) Middle-click and drag Zoom (Magnify Layout) Ctrl + Mouse Wheel Top-Level View Hold Shift key Practical Applications
It cannot accurately simulate the physical structure of processes with significant non-planarization, such as STI (Shallow Trench Isolation) or advanced FinFET structures. Conclusion z(input(2, 0), height: 300
This makes the 25D view exceptionally fast—almost as responsive as 2D—while conveying 80% of the spatial insight of a full 3D engine.
Visualize air gaps, suspended membranes, waveguides, and cavities to ensure mechanical and optical clearance before sending files to the foundry.
Fix: Do not render the entire chip. Draw a small or Selection Box over a specific cell or region of interest, right-click, and select "Open 25D View for Selection". Best Practices for IC, MEMS, and Photonics Designers
Because semiconductor layers are often very thin relative to their width, the 2.5D view includes a on the right side of the window. Increasing this factor exaggerates the vertical dimensions, making it easier to see height variations that would otherwise appear flat. Advanced Visualization Features True 3D is blocked by opaque objects
Check your layer setup table. If all your layers have an elevation and thickness of zero, they will render as flat 2D shapes.
Exploring the KLayout 2.5D View: A Powerful Tool for IC Visualization
Share intuitive, spatial representations of complex device architectures with team members, fabricators, or clients who may struggle to interpret flat mask data.
Before diving into KLayout, we must clarify the terminology. In computer graphics, implies full six-degree-of-freedom navigation (x, y, z translation, plus roll, pitch, yaw). 2D offers only x and y.