Trusted Design Tab¶
The Trusted Design tab manages comparison to golden gds files.
The following tools are available in the Trusted Design tab:
Import Golden¶
Opens a dialogue to import the layer.
Golden Compare¶
Initiates the golden compare operation
Reports¶
Opens the report in the bottom pane
See the golden compare tutorial: Comparing a Layer to a Golden Layer
Types of Differences¶
In the following examples, the golden layer is blue, the fabricated layer is red, and the difference is yellow. The tolerance used was 1 micron.
Extra Metal¶
When fabricated metal has no golden metal near it, as defined by the tolerance, then that area will be flagged as an Extra Metal error.
Missing Metal¶
When golden metal has no fabricated metal near it, as defined by the tolerance, then that area will be flagged as a Missing Metal error.
Bridge¶
A bridge is when one extracted polygon overlaps two or more golden polygons. This error is always detected, regardless of the tolerance setting.
Gap¶
A gap is when one golden polygon overlaps two or more extracted polygons. This error is always detected, regardless of the tolerance setting.
Errors and Warnings¶
Differences are either considered errors or warnings. In general, differences are flagged as warnings if the highlighted area is smaller than the tolerance.