Bei Aktiv Matrix LCDs (TFT) mit einer Auflösung von 1920 x 1080 Pixeln, welche sich
aus je drei Sub-Pixeln (Rot, Grün, Blau) zusammensetzen, kommen insgesamt ca.
6,2 Mio. Ansteuertransistoren zum Einsatz. Aufgrund dieser sehr hohen Anzahl von
Transistoren und des damit verbundenen äußerst komplexen Fertigungsprozesses,
kann es vereinzelt zu einem Ausfall oder zur fälschlichen Ansteuerung von Pixeln
bzw. einzelnen Sub-Pixeln kommen.
In der Vergangenheit gab es immer wieder verschiedenste Ansätze die Anzahl
der erlaubten Pixelfehler zu definieren. Diese waren aber zumeist sehr kompliziert
und von Hersteller zu Hersteller völlig unterschiedlich. MEDION folgt daher für alle
TFT-Display-Produkte bei der Garantieabwicklung den strengen und transparenten
Anforderungen der Norm EN 9241-307, Klasse II; welche im Folgenden kurz zu-
sammengefasst sind.
Der Standard EN 9241-307 definiert u.a. allgemein gültige Vorgaben in Bezug auf
Pixelfehler. Die Pixelfehler werden in vier Fehlerklassen und drei Fehlertypen kate-
gorisiert. Jeder einzelne Pixel setzt sich wiederum aus drei Sub-Pixeln mit je einer
Grundfarbe (Rot, Grün, Blau) zusammen.
Pixelaufbau
5 Pixel
Zeilen
Sub-Pixel
Pixel
blau
grün
rot
5 Pixel
99440_S6214T BE ALDI BE Content MSN 4005 1135 RC1.indb 22899440_S6214T BE ALDI BE Content MSN 4005 1135 RC1.indb 22810.09.2014 14:23:5010.09.2014 14:23:50
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