minConcaveEdgeLength

Specifies the minimum edge length for an edge that is in a concave corner of a shape on the layer.

minConcaveEdgeLength Quick Reference

Value Type

The minConcaveEdgeLength constraint has a Value that is the minimum edge length, in user units, for an edge that is in a concave corner of a shape on the layer.

Parameter

• lengthSum (Value, optional) specifies that the constraint does not apply if the sum of consecutive edges that are shorter than the minimum edge length value is less than the value of this parameter.

Examples

set_constraint -layer Metal2 -constraint minConcaveEdgeLength \
  -Value 0.05

MINSTEP 0.05 INSIDECORNER ;

spacings(
        (minInsideCornerEdgeLength "Metal2" 0.05)
        )

Sets the minimum inside corner edge length on Metal2 to 0.05. The results of the specified constraint on shapes in the following figure are:

• Shapes b and e are violations because their consecutive edges are less than 0.05 μm.
• Shapes a, c, d and f are not inside corner checks.
  
  Concave and Convex Edge Examples
  

Related Topics

Length and Width Constraints