Philips 278C4QHSN/27 Proximity of Pixel Defects, For the proximity of pixel defects, Tables

8. Customer care and warranty
Note	Proximity of Pixel Defects
A red or blue bright dot must be more than 50	Because pixel and sub pixels defects of the
percent brighter than neighboring dots while	same type that are near to one another may be
a green bright dot is 30 percent brighter than	more noticeable, Philips also specifies tolerances
neighboring dots.	for the proximity of pixel defects.
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.These are
the types of black dot defects.
	Pixel Defect Tolerances
	In order to qualify for repair or replacement
	due to pixel defects during the warranty period,
	a TFT Monitor 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
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
BLACK DOT DEFECTS		ACCEPTABLE LEVEL
1 dark subpixel			5 or fewer
2 adjacent dark subpixels			2 or fewer
3 adjacent dark subpixels		0
Distance between two black dot defects*			>15mm
Total black dot defects of all types			5 or fewer
TOTAL DOT DEFECTS		ACCEPTABLE LEVEL
Total bright or black dot defects of all types			5 or fewer

Note

1.1 or 2 adjacent sub pixel defects = 1 dot defect

2.This monitor is ISO9241-307 compliant, Class-I compliant.(ISO9241-307: Ergonomic requirement , analysis and compliance test methods for electronic visual displays)

3.ISO9241-307 is the successor of formerly known ISO13406 standard, which is withdrawn by the International Organisation for Standardisation (ISO) per: 2008-11-13.

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