Philips 220SW9FB Guida Utente

Philips Pixel Defect Policy

  

 

   

   

 

 

 

 

  Product Features

 

 

 

 

 

 

 

  

 

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.

 

 

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. 

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