Philips 221TE4L, 231TE4L user manual Pixel policy, Pixels and Sub pixels

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10 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 a flat monitor panel 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 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.

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.

These are some 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)

English

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Image 25 Contents
221TE4L 231TE4L Model Contents Koninklijke Philips Electronics N.V. All rights reserved Risk of electric shock or fire SafetyScreen care Unplug the monitor before cleaningGet started and connect your devices Back connectorAV Input Side connector Controls Remote controlSide control buttons SourceGuide InfoOption Prev CHSwitch channels Switch your monitor on/off or to standbyStart to use This section helps you perform basic monitor operationsWatch connected devices Adjust monitor volumePower Supported display resolutionsProduct information Tuner/Reception/TransmissionThis chapter describes the channel installation settings Using TV signal as the input sourceAdd Channels TV Signal Source Signal Meter Enable One-Seg Services NavigationChannel Edit Remove All Channels Exhibition Time SettingsLanguage Date and Time Parental LockThis item set the clock Blue Screen SleepSticker Auto Power-OffThis item set the TV to Demo mode.When Come outCC On Mute This item switches the Closed Caption on or offColor System This item set the color systemThis item adjust the settings when PC is connected Multimedia This chapter describes how to use the multimedia functionMusic Player View PhotosPixels and Sub pixels Pixel policyPixel Defect Tolerances Model General monitor issues TroubleshootingTV channel issues Picture issuesHdmi connection issues Sound issuesComputer connection issues Contact usVersion M4221TEE1BZT
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