Dark Dot Defects; Proximity Of Pixel Defects; Pixel Defect Tolerances - Philips BDL4245E/27 User Manual

BDL3245E / BDL4245E / BDL4645E
6.4.

Dark Dot Defects

Black dot defects appear as pixels or sub-pixels that are always dark or "off ". These are the examples of black dot defects:
One dark dot
6.5.

Proximity of Pixel Defects

Because pixel and sub-pixels defects of the same type that are nearby one another may be more noticeable, Philips also specifies tolerances for the
proximity of pixel defects. In the table below you can find specifications about:
• Allowed amount of adjacent dark dots = (adjacent dark dots =1 pair of dark dots)
• Minimum distance between dark dots
• Total no. of all defective dots
6.6.

Pixel Defect Tolerances

In order to qualify for repair due to pixel defects during the warranty period, a PDP / TFT panel in a Philips Plasma / LCD- display must have pixel or sub-
pixel defects exceeding the tolerances listed in the following table.
BRIGHT DOT EFFECT
1 lit sub pixel
BLACK DOT EFFECT
1 dark sub pixel
TOTAL DOT DEFECTS OF ALL TYPES
NOTE: * 1 or 2 adjacent sub pixel defects = 1 dot defect
Two adjacent dark dots = 1 pair of dark dots
24
Two dark dots, specifications defines the
minimum distance between dark dots
ACCEPTABLE LEVEL
2
ACCEPTABLE LEVEL
10
12