Philips 170X4FS [52/84] Philips flat panel monitors pixel defect policy

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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. 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.

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 Bright dot defects appear as pixels or sub pixels that are always lit or 'on'. These are the

types of bright dot defects: