Manual Medion Akoya S6446 (page 45 of 49) (English)

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27. Information on Display Errors

27.1. European EN ISO 9241-307 Class II Standard

Due to the very high number of transistors and the associated extremely complex

manufacturing processes used, occasionally one or more pixels can fail or become

incorrectly controlled.

In the past, there were a number of approaches for defining the permitted number

of pixel defects. However, these approaches were mostly very complicated and

varied from one manufacturer to the next. When handling warranty issues for all

of its display products, MEDION therefore adheres to the strict and transparent

requirements of the standard EN ISO 9241-307, Class II; which has been briefly

summarised below.

The EN ISO 9241-307 standard defines, amongst other things, the generally

applicable guidelines relating to pixel defects. Pixel defects are categorised into

four fault classes and three defect types. Every individual pixel consists of three sub-

pixels, each of which is assigned a basic colour (red, green, blue).

Pixel structure

5 Pixel

Rows

Sub-Pixel

Pixel

blue

green

red

5 Pixel

Pixel defect types:

• Type 1:

permanently illuminated pixel (bright, white dot) even when not activated. A

white pixel occurs due to the illumination of all three sub-pixels.

• Type 2:

non-illuminated pixel (dark, black dot) even when activated.

• Type 3:

abnormal or faulty red, green or blue sub-pixel (e.g. permanently illuminated at

half brightness, one colour not illuminated, flashing or flickering but not type 1

or 2)

Supplement: Type 3 cluster (= failure of two or more sub-pixels within a 5 x 5 pixel

block). A cluster is a field of 5 x 5 pixels (15 x 5 sub-pixels).

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Medion Akoya S6446 User Manual - German - 53 pages

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Medion Akoya S6446 Manual

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