12.0 Scribe Line & Guard Ring Rules And GuidelinesΒΆ 12.1 Scribe Lines 12.2 Six Metal Scribe Line Guard Ring Structure 12.3 Placement and Electrical Connection of Guard Ring 12.3.1 Guard ring spacing to any other circuits 12.3.2 Guard ring and Vss bus 12.3.3 Used with Down Bond Chip 12.4 Guard Ring design rule check