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One lit red, green or blue
sub pixel
Two adjacent lit sub pixels:
- Red + Blue = Purple
- Red + Green = Yellow
- Green + Blue = Cyan (Light Blue)
Three adjacent lit sub
pixels (one white pixel)
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 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.
BRIGHT DOT DEFECTS ACCEPTABLE LEVEL
MODEL
220
BW8
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