Kerf Checking
Advanced Dicing Technologies Ltd.
6.3-12
including some of the Workpiece beyond the edges of the Kerf, as
shown below:
7 Set the value for Black/White threshold. (The threshold setting is
located below the illumination setting windows on the right pane of the
screen.)
8 Click Teach. The first Model is taught. The Wizard confirms whether
the Model has been taught successfully.
9 Click Next. The Find button is enabled.
10 [Optional] Click Find to verify that the taught Model (Kerf) is
satisfactory. The System searches for the taught Model in the FOV.
The results of the Find procedure are displayed in the FOV, as follows:
• Wmax: Maximum Kerf Width.
• Wmin: Minimum Kerf Width.
• DY: Cut displacement (equivalent to Y Offset).
• Center-To-Max Chip: The distance from the center of the Kerf to
the maximum chipped point.
• Skew: The maximum offset in the Y-Axis between the current
Model and the last Model found
.
• Top Chipping: The maximum chipping measured from Wmin to
the front-most (lowermost) chipped point.
• Bot Chipping: The maximum chipping measured from Wmin to
the rear-most (uppermost) chipped point.
1Kerf (Black)
2 Search Area
(Green)
3 Reticle (Green)
4 Teach Window
(Blue)
Figure 6-32: Teach Kerf Check
2
3
4
1
Note: When teaching the Kerf for angle 0 degrees, make sure it does not cross
the Kerf of 90 degrees.
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