Philips 150X4FS Electronic User's Manual page 53

Philips Pixel Defect Policy
One lit red, green or blue sub
pixel
Black Dot Defects
the types of black dot defects:
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
MODEL
1 lit sub pixel
2 adjacent lit sub pixels
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Two adjacent lit sub pixels:
- Red + Blue = Purple
- Red + Green = Yellow
- Green + Blue = Cyan (Light Blue)
Black dot defects appear as pixels or sub pixels that are always dark or 'off'. These are
One dark sub pixel
150X4
0
0
Three adjacent lit sub pixels
(one white pixel)
Two or three adjacent dark sub pixels
ACCEPTABLE LEVEL
150C4/170C4
4 or fewer
2 or fewer
170X4/170N4
0
0