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DÉFAUTS DE PIXELS AVEC LES TÉLÉVISEURS LCD
Malgré des procédés de fabrication
ultramodernes, il peut se produire dans
de rares cas, en raison de la technique
extrêmement complexe, des pertes de
points lumineux individuels ou
multiples.
Avec les matrices actives TFT d'une
résolution de 480 x 234 pixels qui se
composent de trois sous-pixels (rouge,
vert, bleu), environ 336 960 éléments
d'excitation sont utilisés au total. En
raison de ce nombre élevé de transistors
et du processus de fabrication
extrêmement complexe en découlant, il peut se produire dans certains cas une
défaillance, voire une excitation erronée des pixels et/ou de certains sous-pixels.
Le tableau décrit le nombre de défauts de pixels maximum acceptable sur l'écran
sans qu'il s'agisse d'un cas de garantie. On est, dans certaines conditions, en
présence d'un cas de garantie lorsque le nombre de défauts indiqué ci-dessus est
dépassé dans une catégorie.
Description Nombre
acceptable
Sous-pixels clairs
1 sous-pixel Max. 1
Deux contigus (horizontal/vertical) 0
Distance
Distance minimum entre sous-pixels
clairs et sombres
Min. 5 mm
Sous-pixels
sombres
Individuels Max. 1
Deux contigus Max. 0
Distance
Distance minimum entre sous-pixels
clairs et sombres
Min. 5 mm
Nombre total de sous-pixels clairs et sombres
Max. 2
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