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9. Pixel policy
Philips strives to deliver the highest quality
products. We use some of the industry's
most advanced manufacturing processes and
practice stringent quality control. However, pixel
or sub pixel defects on the TFT LCD panels
used in flat panel monitors are sometimes
unavoidable. No manufacturer can guarantee
that all panels will be free from pixel defects,
but Philips guarantees that any monitor with
an unacceptable number of defects will be
repaired or replaced under warranty. This notice
explains the different types of pixel defects and
defines acceptable defect levels for each type. In
order to qualify for repair or replacement under
warranty, the number of pixel defects on a TFT
LCD panel must exceed these acceptable levels.
For example, no more than 0.0004% of the sub
pixels on a 19" XGA monitor may be defective.
Furthermore, Philips sets even higher quality
standards for certain types or combinations
of pixel defects that are more noticeable than
others. This policy is valid worldwide.
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 together form an
image. When all sub pixels of a pixel are lit,
the three colored sub pixels together appear
as a single white pixel. When all are dark, the
three 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.
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