allows you to visualize 2D layouts as extruded 3D objects, providing a clearer perspective on layer stacks and connectivity. Accessing the 2.5D View Open your layout in the KLayout Editor Navigate to the to open the visualization in a new tab. Navigation Controls The view uses camera-based movement relative to a pivot point (marked by a compass icon): Rotate (Azimuth/Elevation) Right-click + Drag Move Pivot (Up/Down/Left/Right) Middle-click + Drag Move Pivot (Forward/Backward) Mouse Wheel Zoom (Magnify/Shrink) + Mouse Wheel Top-Level View Toggle Keyboard Panning Arrow Keys Keyboard Rotation + Arrow Keys Key Features
: Use the mouse wheel to move the camera forward/backward, or Ctrl + Mouse Wheel to magnify the layout.
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. klayout 25d view
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?
Before you can use the 2.5D view, you need to ensure your system is properly set up. The most critical requirement is . KLayout must be compiled with OpenGL to enable this feature, and your graphics drivers must be compatible. Some older systems or configurations (like older macOS versions with OpenGL 2.1) have historically required a minimum of OpenGL 3.0 or newer , though modern versions of KLayout are more compatible. Pre-built installers from the official KLayout website usually include this support out of the box for Windows, Linux, and modern macOS systems. If you're compiling from source, it's crucial to enable OpenGL dependencies during the build process. allows you to visualize 2D layouts as extruded
The layer definition is controlled via a simple configuration script or graphical table within the plugin interface. You must specify three critical parameters for each layer:
The baseline elevation where the layer begins relative to the substrate ( As integrated circuit (IC) designs grow in complexity,
Manually typing heights every time is inefficient. You can automate your process stack using KLayout's built-in Ruby or Python macro interpreter.
Most plugins feature a "Z-Scale" slider. Because IC layers are extremely thin compared to their lateral width, a ratio looks completely flat. Boosting the Z-scale to
Large layout files can cause the 2.5D viewer to lag or run out of memory. To keep the interface fluid: