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13. Pixelfehler bei LCD-TVs (Full HD)
Trotz modernster Fertigung kann es
auf Grund der hochkomplexen Technik
in seltenen Fällen zu Ausfällen von ein-
zelnen oder mehreren Leuchtpunkten
kommen.
Bei Aktiv Matrix TFTs mit einer Auflö-
sung von 1920 x 1080 Pixel, welche
sich aus je drei Sub-Pixel (Rot, Grün,
Blau) zusammensetzen, kommen ins-
gesamt ca. 6,2 Mio. Ansteuerelemente
zum Einsatz. Aufgrund dieser sehr ho-
hen Anzahl von Transistoren und des
damit verbundenen äußerst komplexen Fertigungsprozesses kann es verein-
zelt zu einem Ausfall oder zur fälschlichen Ansteuerung von Pixel bzw. einzelnen
Sub-Pixel kommen.
Pixelfehler-
klasse
Fehlertyp 1
ständig
leuchtender
Pixel
Fehlertyp 2
ständig
schwarzer Pi-
xel
Fehlertyp 3
defekter Subpixel
leuchtend schwarz
00000
I112
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
n*=1,5
Die erlaubte Anzahl von Fehlern der o. g. Typen in jeder Fehlerklasse bezieht sich
auf eine Million Pixel und muss entsprechend der physikalischen Auflösung der
Displays umgerechnet werden.
5 Pixel
Zeilen
Sub-Pixel
Pixel
blau
grün
rot
5 Pixel
61


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