My device has pixel errors

31.03.2017 13:56

With a large number of cells current displays have, it is possible that individual cells may have an error and are permanently turned on or off. The results are constantly lit or black pixels.

The following conditions must be satisfied for the correct measurement of the pixel error:

•  Preheating of the test monitor > 1 hour

• Ambient temperature 25°C +/- 5°C

• Relative humidity 40-70%

• Test must be carried out in a dark room

Our displays underlie the pixel error class II. Refer to the table below to determine the appropriate permissible pixel errors

In relation to each one million existing pixels, the following pixel defects are allowed:

ISO 9241-307

Pixel error class

Error type 1

Permanent bright pixel

Error type 2

Permanent dark pixel

Error type 3

Birght subpixel

Error Type 4

Dark subpixel

former class of ISO 13406-2

0

0

0

0

0

I

I

1

1

2    +    1
1    +    3
0    +    5

Not applicable

II

2

2

5    +    0
4    +    2
3    +    4
2    +    6
1    +    8
0    +   10

II

III

5

15

Up to 50

III

IV

50

150

Up to 500

IV

The calculation shall be rounded mathematically.

For example, a 22“ Full HD display consists of 1920 x 1080 = 2.073.600 pixels.

2 pixelerror type 1 x 2.073.600 = 4,1472    
          1.000.000

Correspondingly 4 permanent bright pixels (type 1) would be within the tolerance and 5 would be outside.

If your product exceeds the values of error type 2, or you have further questions, please contact our customer service here.  Please indicate your customer number and invoice number.


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