Proximity Of Pixel Defects; Pixel Defect Tolerances - Philips 170B4MG Electronic User's Manual

Philips Pixel Defect Policy
One lit red, green or blue
subpixel
Black Dot Defects Black dot defects appear as pixels or sub pixels that are always dark or 'off'. These are the
types of black dot defects:
One dark subpixel

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
MODEL
1 lit subpixel
2 adjacent lit subpixels
3 adjacent lit subpixels (one
white pixel)
Distance between two bright
dot defects*
file:///D|/L/english/170b4mg/product/pixel.htm (2 of 3) [4/28/2003 1:32:37 PM]
Two adjacent lit subpixels:
- Red + Blue = Purple
- Red + Green = Yellow
- Green + Blue = Cyan (Light Blue)
170B4
4 or fewer
2 or fewer
0
15 mm or more
Three adjacent lit subpixels (one
white pixel)
Two or three adjacent dark subpixels
ACCEPTABLE LEVEL
170S4
6 or fewer
2 or fewer
0
15 mm or more