Smart Gui - Algorithm Training Material_rev1.pdf - 第29页

Copyright © ViT rox All Rights Reserved . 29 1. Solder V olume 2D+3D ● Using 2D (Grayscale) and 3D(Height) ● OR Relation between 2D and 3D as pass criteria ● Every single pixels in the joint box will go through inspectio…

CR Type Algorithm - Joint (2D Only)

5. Joint Coverage Threshold

● Using 2D only (Grayscale)

● Every single pixels in the joint box will go through inspection.

● The pixels highlighted in purple colour is the passed pixels that

(Grayscale on that pixel < Gray Thres set).

● The number in yellow beside the joint box is the percentage of

pass pixels. Refer to example below.

1. Solder Volume 2D+3D

● Using 2D (Grayscale) and 3D(Height)

● OR Relation between 2D and 3D as pass criteria

● Every single pixels in the joint box will go through inspection

CR Type Algorithm - Joint (Solder Volume 2D+3D)

1. Solder Coverage 2D+3D (um)

● Same as Solder Coverage 2D+3D (%)

● Except the height unit in um.

● The height thres will increased when lifted body happened.

● Below shows 2 examples with height Threshold: 80um at

different conditions:

a. Without Lifted body

b. With Lifted body

CR Type Algorithm - Joint [Solder Coverage 2D+3D (um)]

Pass Criteria for single pixel:

a. Measured Grayscale < Joint Grey Thres

b. Solder Height (%) > Joint Height Thres (%).

The overall pass criteria depends on:

Joint Coverage (%) > Joint Coverage Thres (%)

where,