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6. Customer care and warranty
display displays a light pattern. These
are 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 Display panel in a Philips flat panel display must have pixel or sub pixel
defects exceeding the tolerances listed in the following tables.
BRIGHT DOT DEFECTS
ACCEPTABLE LEVEL
1 lit subpixel
3
2 adjacent lit subpixels
1
3 adjacent lit subpixels (one white pixel)
0
Distance between two bright dot defects*
>15mm
Three adjacent lit sub pixels (one white
pixel).
Note
A red or blue bright dot must be
more than 50 percent brighter than
neighboring dots while a green
bright dot is 30 percent brighter than
neighboring dots.
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
