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11.1. Pixelfouten bij tft-monitors
Ondanks het gebruik van de modernste pro-
ductiemethoden kunnen er vanwege de zeer
complexe techniek in zeldzame gevallen een
of meer pixels uitvallen.
Bij actieve matrix-tft-monitors met een reso-
lutie van 3440 x 1440 pixels, die elk uit drie
subpixels (rood, groen en blauw) bestaan,
zijn er in totaal ca. 14,8 miljoen elemen-
ten die moeten worden aangestuurd. Van-
wege dit zeer grote aantal transistors en het
daaraan gerelateerde uiterst complexe pro-
ductieproces is het mogelijk dat er af en toe
pixels of afzonderlijke subpixels uitvallen of
verkeerd worden aangestuurd.
Pixelfout-
klasse
Fouttype 1
continu
oplichtende
pixel
Fouttype 2
continu
zwarte pixel
Fouttype 3
defecte subpixel
oplichtend zwart
00000
I11
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
Het toegestane aantal fouten van de bovenstaande typen in iedere foutklasse geldt
per miljoen pixels en moet afhankelijk van de fysieke resolutie van de monitor wor-
den omgerekend.
Het toestel voldoet aan de Europese norm ISO 9241-307 klasse II (pixelfoutklasse).
Pixelfouten tot het aangegeven maximumaantal vallen niet onder de garantie.
5 Pixels
Regels
Subpixel
Pixel
blauw
groen
rood
5 Pixels
24


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