NEC LCD1501-BK Service Manual page 45

Note 6: Approach of adjacent defects
R
≤ 6.5mm
Note 7: A set of 2 or more dot defects in an area of 5×5 pixels
If there are two or more dot defects [(5)] in an area of 5×5 pixels, such a set of dot defects shall be
counted as one cluster.
Note 8. Two or more pixels or sub-pixels with more than one fault of 1) or 2) within 5x5 pixels
Count as defect
5x5 pixels
R G
R G
R
>10mm
The distance between adjacent defects shall be longer than 10mm.
5×5 pixels
Dot defects [(5)]
1 cluster
5x5 pixels
R G
R G
R R
≤ 6.5mm
There shall be no more than 3 clusters throughout
the screen area.
Do not count as defect
5x5 pixels
R G
R G
5-11