Philips 231T1SB/00 Service Manual page 18

Meridian 1
18
One lit red, green or blue sub 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. There are two types of black
dot defects:
One dark sub pixel
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
The display does not have more than:
3 bright dots
5 dark dots
5 total bright and dark dots
No more than two adjacent (less than 2.5 mm edge-to-edge) defective pixels.
Two adjacent lit sub pixels:
- Red + Blue = Purple
- Red + Green = Yellow
- Green + Blue = Cyan (Light Blue)
Three adjacent lit sub pixels
(one white pixel)
Two or three adjacent dark sub pixels