Philips V Series Manuale d'uso - Pagina 27

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7.Customer care and warranty

7. Customer care and

warranty

7.1 Philips' Flat Panel Monitors

Pixel Defect 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

Monitor 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 Monitor panel must 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 higher

quality standards for certain types or

combinations of pixel defects that are

more noticeable than others. This policy

is valid worldwide.

Sub pixels

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.

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

Bright dot defects appear as pixels or

sub pixels that are always lit or 'on' . That

is, a bright dot is a sub-pixel that 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.

pixels