E
E
N
NG
GLLIIS
SH
H
24
This leads to a maximum
allowed
number in
class II type failure:
Resolution Mill.
Pixel SubPixel Type
(s.above)
1024 x 768 (15")
0.786432
2.359296
2 2 4 - 2
1280 x 1024 (17,18, 19")
1.310720
3.932160
3 3 7 - 3
1600 x 1200 (19“)
1.920000
5.760000
4 4 10 - 4
Class I type failure only applies to special applications, e.g. medical applications,
and results in corresponding price increases. Class II type failure is the estab-
lished standard for quality conscious manufacturers with high quality displays.
Example 1:
A 15” - XGA-display consists of 1024 horizontal and 768 vertical picture dots
(pixel), which amounts to a total of 786,432 pixel. Related to one million pixels
this translates into a factor of about 0.8.
Class II type failure consequently allows for two defects each of type 1 and type 2
and 4 defects of type 3 and 2 clusters of type 3.
Example 2:
A 17” - SXGA-display consists of 1280 horizontal and 1024 vertical picture dots
(pixel), which amounts to a total of 1,31 million pixels. Based on one million pixels
this translates into a factor of about 1.31.
Class II type failure consequently allows for three defects each of type 1 and type
2 and 7 defects of type 3 and 3 cluster of type 3.
These cases are normally not covered by warranty.
If the number of failures exceeds the figures of any category mentioned above
then this may be covered by the warranty.
