Pixel Policy

June 2005
Types of Pixel Defects
Pixel and subpixel defects appear on the screen in different ways. There are two categories of pixel defects and several types of subpixel defects within each
category.
Bright Dot Defects
Bright dot defects appear as pixels or subpixels that are always lit or "on". These are the types of bright dot defects:
One lit red, green or blue subpixel
Two adjacent lit subpixels:
- Red + Blue = Purple
- Red + Green = Yellow
- Green + Blue = Cyan (Light Blue)
Three adjacent lit subpixels (one white pixel)
Black Dot Defects
Black dot defects appear as pixels or subpixels that are always dark or "off". These are the types of black dot defects:
One dark subpixel Two or three adjacent dark subpixels
Proximity of Pixel Defects
Because pixel and subpixels defects of the same type that are nearby one another may be more noticeable, Philips also specifies tolerances for the proximity
of pixel defects.
Pixel Defect Tolerances
In order to qualify for repair or replacement due to pixel defects during the warranty period, a TFT LCD panel in a Philips flat panel monitor must have pixel or
subpixel defects exceeding the tolerances listed in the following tables.