Philips 247E3LHSU/00, Service Manual

Page: 14 / 119

Meridian 3 14
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)
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
monitor displays a light pattern. There are 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.