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Telephone:
1300 884 987
Internet: www.medion.com.au
After Sales Support
D-LED LCD TV pixel faults
Despite the most modern production methods, the highly complex
technology involved in producing this type of device means there may be
individual or multiple pixel drop-outs (dead pixels). This is rare, however.
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
Mio. control elements in use. Occasionally one or more pixels
can fail or become incorrectly controlled because of this very high number of
transistors and the associated extremely complex manufacturing processes
used.
Pixel fault class
Defect type 1
continuously
lit pixel
Defect type 2
continuously
black pixel
Defect type 3
Defect 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
0
2xn*
10
III
5
15
50
50-n*
0
0
2xn*
100
IV
50
150
500
500-n*
0
0
2xn*
1000
5 Pixel
Rows
Sub-Pixel
Pixel
blue
green
red
5 P
ix
e
l
