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7. Pixel defect policy
We make every effort to deliver the highest quality products and use some of the industry's most
advanced manufacturing processes whilst practicing stringent quality control. However, pixel or
sub-pixel defects on the panels used in LCD displays are sometimes unavoidable. No manufacturer
can guarantee that all panels will be free of pixel defects, but ProDVX guarantees that any LCD
display with an unacceptable number of defects will be repaired during the warranty period in line
with your local guarantee conditions.
This notice explains the different types of pixel defects and defines the acceptable defect level for
the LCD screen. In order to qualify for repair under warranty, the number of pixel defects must
exceed a certain level as shown in the reference table. If the LCD screen is within specification, a
warranty exchange/claim back will be refused. Additionally, given that certain types or
combinations of pixel defects are more noticeable than others, ProDVX sets even higher quality
standards for these.
7.1 Pixels and sub-pixels
7.2 Types of pixel defects + dot definition
Pixel and sub-pixel defects appear on the screen in different ways. There are three categories of
pixel defects and several types of sub-pixel defects within each category.
Dot definition = what is a defective "dot"? :
One or more defective, adjacent sub-pixels are defined as one "dot". The number of defective sub-
pixels is not relevant to define a defective dot. This means that a defective dot may consist of one,
two or three defective sub-pixels which may be dark or lit.
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A pixel, or picture element, is composed of three sub-pixels in the primary
colors red, green and blue. Many pixels together form an image. When all the
sub-pixels of a pixel are lit, the three colored sub-pixels together appear as a
single white pixel. When they are all 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.
One dot = one pixel; consists of three red, green and blue sub-pixels.
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