Philips' Lcd Panel Pixel Defect Policy; Philips Pixel Defect Policy - Philips 150MT Electronic User's Manual

Philips Pixel Defect Policy

Philips Pixel Defect Policy
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Philips' LCD Panel Pixel Defect Policy

Philips strives to deliver the highest quality products. We use some of the industry's most advanced
manufacturing processes and practise 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 15" 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.
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 subpixels
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.
Types of Pixel Defects
Pixel and sub pixel defects appear on the screen in different ways. There are two categories of pixel defects
and several types of sub pixel defects within each category.
Bright Dot Defects appear as pixels or sub pixels that are always lit or 'on'. These are the types of bright dot
defects:
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