Philips Pixel Defect Policy
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. There are two 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.
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.
BRIGHT DOT DEFECTS
ACCEPTABLE LEVEL
MODEL
170V9
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
file:///D|/cd manual/philips/08/170V9/lcd/manual/ENGLISH/170V9/product/pixel.htm（第 2／3 页）2/23/2008 3:28:14 PM
