Philips 271P4QPJEB-27 - Manual (Page 36)

9. Customer care and warranty
9. Customer care and
warranty
9.1 Philips’ Flat Panel Monitors Pixel
Defect Policy
Philips strives to deliverthe highest quality
products.We use some ofthe industry's most
advanced manufacturing processes and practice
stringent quality control. However; pixelor
sub pixeldefects on theTFT Monitor panels
used in flat panelmonitors are sometimes
unavoidable. No manufacturer can guarantee
that allpanels willbe free from pixeldefects;
but Philips guarantees that any monitorwith an
unacceptable number of defects willbe repaired
or replaced underwarranty.This notice explains
the differenttypes ofpixeldefects and deflnes
acceptable defect levels for each type. In order
to qualify for repair or replacement under
warranty; the number ofpixeldefects on aTFT
Monitor panelmust exceed these acceptable
levels. For example; no more than 0.0004% of
the sub pixels on a monitor may be defective.
Furthermore; Philips sets even higherquality
standards for certain types or combinations
of pixeldefects that are more noticeable than
others.This policy is valid worldwide.
subpixel
R G B
pixel
Pixels and Sub pixels
A pixel; or picture element; is composed of
three sub pixels in the primary colors of red;
green and blue. Many pixels togetherform an
image. When all sub pixels ofa pixelare lit; the
three colored sub pixels together appear as a
single white pixel.When allare dark; thethree
colored sub pixels together appear as a single
black pixel. Other combinations of lit and dark
sub pixels appear as single pixels of other colors.
Types of Pixel Defects
Pixel and sub pixeldefects appear on the screen
in different ways.There are two categories of
pixeldefects and severaltypes ofsub pixel
defects within each category.
Bright Dot Defects
Bright dot defects appear as pixels or sub pixels
that are always lit or 'on'.That is; a bright dot is
a sub-pixelthat stands out on the screen when
the monitor displays a dark pattern.There are
the types of bright dot defects.
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).
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