27
7. Customer care and warranty
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 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
Total bright dot defects of all types
3
BLACK DOT DEFECTS
ACCEPTABLE LEVEL
1 dark subpixel
5 or fewer
2 adjacent dark subpixels
2 or fewer
3 adjacent dark subpixels
0
Distance between two black dot defects*
>15mm
Total black dot defects of all types
5 or fewer
TOTAL DOT DEFECTS
ACCEPTABLE LEVEL
Total bright or black dot defects of all types
5 or fewer
Note
1. 1 or 2 adjacent sub pixel defects = 1 dot defect
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