26
11.1. Pixel faults in TFT monitors
5 Pixel
Rows
Sub-Pixel
Pixel
blue
green
red
5 P
ix
e
l
Despite the state-of-the-art production meth-
ods, in rare cases there may be individual or
multiple pixel drop-outs (dead pixels) due to
the highly complex technology.
For active matrix TFTs with a resolution of
1920 x 1080 pixels
, which are each made up
of three sub-pixels (red, green, blue), there are
a total of
approx. 6.2 million
control elements
in use. Occasionally pixels or individual sub-pix-
els can fail or become incorrectly controlled be-
cause of this very high number of transistors
and the extremely complex manufacturing pro-
cess used in this context.
Pixel defect
class
Defect type 1
Continuously
lit pixel
Defect type 2
Continuously
black pixel
Defect type 3
Defective sub-pixel
lit
black
0
0
0
0
0
I
1
1
2
1
0
1
3
5
II
2
2
5
5-n*
0
2 x n*
10
III
5
15
50
50-n*
0
0
2 x n*
100
IV
50
150
500
500-n*
0
0
2 x n*
1000
n*=1.5
The permitted number of defects for every type named above in each class of pixel
defect refers to one million pixels and must be converted accordingly to match the
physical resolution of the display.
Your device complies with the European ISO 9241-307 Class II standard (pixel defect
class). Pixel defects up to the specified maximum number are not covered by the
warranty.
Содержание ERAZER X52424
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