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Inspection Procedure
4.2
IC Inspection Example
4.2
IC Inspection Example
In this example, we will use an IC to illustrate what kinds of inspection are possible and
how to perform them.
Pitch
Refer to "4.2.3
Mark Detection
(Gray ScaleWindow
Checker)" for details.
4.2.1
Character Verification (Character Verification Checker)
Use the Character Verification checker to inspect characters and numbers printed on
the inspection target. The Character Verification checker compares the characters on
the inspection target with registered images to see if they are the same and thereby
identify quality problems.
There are two types of inspection; Character Verification (character−by−character) and
Pattern Inspection (comparison of multiple characters at one time).
Refer to 7 Character Verification Checker for a detailed explanation.
− The text portion to be inspected is the white part as shown in the diagram.
Here we will run through the character inspection procedure using this as an example.
4 − 4
Number of leads
Width
Characters to be inspected by
the Character Verification checker.
Refer to p. 8 − 3 for details.
Refer to "4.2.2 Inspection of
No. of Leads, Pitch and Width
(Lead Inspection Checker)"
for details.
Refer to "4.2.1 Character
Verification (Character Verification
Checker)" for details.
OCR Type A230
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