| LCD
Pixel Criteria Guideline |
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Due
to current manufacturing methods of LCD display panels,
a certain number of sub-pixel anomalies (a pixel stuck
on or off) are acceptable. Because the manufacturing yield
of perfect LCD Displays are very low, displays may have
some sub-pixels that are either always on or always off.
The cost of accepting only perfect displays could nearly
double the price of a and LCD Display. This is true of
all products using LCD technology, not specific to one
manufacturer. If the industry attempted to set a zero
standard, the current manufacturing yield would be so
low that the cost of an LCD display would be many times
higher than it is today. Luckily, most customers and applications
are tolerant of a low level of non-performing pixels and
prefer the lower cost that the existing standards allow. |
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It
is advised that if you think your LCD screen contains
an excessively high number of pixel anomalies, you can
contact tech support to arrange an evaluation. However,
you should be aware that we will not replace a screen
with just one or a small number of dead pixels. |
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| Pixel
Guidelines: |
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Each
LCD Manufacturer is committed to customer satisfaction
by providing the highest quality products in the industry.
The result is that our LCD displays generally have very
few non-performing pixels. For example, an 18" SXGA (1280
x 1024) display has nearly 4 million sub-pixels. A product
exhibiting 10 non-performing pixels would equate to an
extremely small 0.00025 percent of the total sub-pixels. |
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'(1280
Horizontal Pixels) * (1024 Vertical Pixels) * (3 sub-pixels
per pixel) = 3,932,160 sub-pixels |
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[(10
non-performing pixels) / (3,932,160 sub-pixels)] * 100%
= 0.00025% |
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To
ensure the highest performing displays, the manufacturer
sets limits as to the allowable number of pixel anomalies.
The manufacturer has adopted the following pixel criteria
to supplement our existing limited warranty. This policy
applies to all the manufacturer LCD displays during the
warranty period. |
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The manufacturer sets limits on 12" - 14"
LCD’s at 8 bright sub-pixels, 8 dark sub-pixels, or a
combination of 10.
The manufacturer sets limits on 15" - 17" LCD’s at 3 bright
sub-pixels, 3 dark sub-pixels, or a combination of 5.
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*It
is possible that any replacement display may also have
some non-performing sub-pixels. This should be considered
when requesting a warranty exchange |
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