Black Dot Defects
Black dot defects appear as pixels or sub pixels that are always dark or 'off'. That
is, a dark dot is a sub-pixel that stands out on the screen when the monitor displays a light pattern.
These are the types of black dot defects:
One dark sub pixel
Two or three adjacent dark sub pixels
Proximity of Pixel Defects
Because pixel and sub pixels defects of the same type that are near to one another may be more
noticeable, Philips also specifies tolerances for the proximity of pixel defects.
Pixel Defect Tolerances
In order to qualify for repair or replacement due to pixel defects during the warranty period, a TFT
LCD panel in a Philips flat panel monitor must have pixel or sub pixel defects exceeding the
tolerances listed in the following tables.
BRIGHT DOT DEFECTS
ACCEPTABLE LEVEL
MODEL
190TW8
1 lit subpixel
3
2 adjacent lit subpixels
1
3 adjacent lit subpixels (one white pixel)
0
Distance between two bright dot defects*
15 mm
Total bright dot defects of all types
3
BLACK DOT DEFECTS
ACCEPTABLE LEVEL
MODEL
190TW8
1 dark subpixel
5
2 adjacent dark subpixels
2
3 adjacent dark subpixels
0
Distance between two black dot defects*
15 mm
Total black dot defects of all types
5
TOTAL DOT DEFECTS
ACCEPTABLE LEVEL
MODEL
190TW8
Total bright or black dot defects of all types
5
* 1 or 2 adjacent sub pixel defects = 1 dot defect
Your Philips monitor is ISO13406-2 Compliant
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