Manual Medion MD20130 (page 47 of 158) (English, German, Dutch, Danish, French, Italian, Spanish)

519022

Zoom out

Zoom in

1/158

Pixel errors in the TFT monitor

A total of approx. 6.9 m control transistors are used in the case of Active Matrix TFTs with a resolution of 1920 x

1200 Pixeln (WSXGA), each composed of three sub-pixels (red, green, blue). A failure or incorrect control of

pixels or individual sub-pixels can arise occasionally, because of this very high number of transistors and the

extremely complex manufacturing process associated with it.

There have been continuous approaches to define the number of permitted pixel errors in the past. However,

these attempts have for the most part been very complicated and completely different from manufacturer to

manufacturer. MEDION follows the strict and transparent requirement of the ISO 13406-2, Class II Norm,

which are summarised in brief in the following, in the handling of guarantees for all TFT display products for this

reason.

Among other matters, the 13406-2 ISO Standard defines generally applicable

guidelines in relation to pixel errors. The pixel errors are categorised into four

error classes and three types of error. Each individual pixel is composed in its

turn of three sub-pixels each with a basic colour (red, green, blue).

Types of pixel error:

 Type 1: Pixels shining for a long time (bright, white point), although not activated.

A white pixel arises because of the illumination of all three sub-pixels.

 Type 2: Pixels not shining (dark, black point), although activated

 Type 3: Abnormal or defective sub-pixels coloured red, green or blue (e.g. shining for a long time with half

brightness, not lighting one colour, flashing or flickering, but not Type 1 or 2)

Addition: Cluster of Type 3 (= failure of two or more sub-pixels in a block of 5 x 5 pixels. A cluster is a field of 5 x 5

pixels (15 x 5 sub-pixels).

Classes of pixel error:

Error Class Type 1Type 2Type 3Cluster of Type 3

I 0 0 0 - 0

II 225 - 2

III 5 15 50 5

IV 50 150 500 50

The permitted number of errors of the types specified above in each class of error relates to a million pixels and

must be converted in accordance with the physical resolution of the display.

A maximum permitted number in Error Class II follows from this:

For a resolution o

M. pixel Sub-pixels (Type, see

above)

1024 x 768 (15") 0.786432 2.359296 2 2 4 - 2

1280 x 1024 (17,18, 19") 1.310720 3.932160 3 3 7 - 3

1600 x 1200 (19“) 1.920000 5.760000 4 4 10 - 4

1440 x 900 (19“ wide) 1.296000 3.888000 3 3 7 - 3

1680 x 1050 (20“ wide, 22“ wide) 1.764000 5.292000 4 4 10 - 4

1920 x 1080 (23.6" wide) 2.073600 6.220800 4 4 10 - 4

1920 x 1200 (25.5" wide) 2.304000 6.912000 4 4 10 - 4

Error Class I is only used in the case of special applications, e.g. in the medical sector, and is associated with

corresponding supplementary costs. Error Class II has become established as the standard for manufacturers

conscious of quality and with very good display units.

Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

Forumrules

To achieve meaningful questions, we apply the following rules:

First, read the manual;
Check if your question has been asked previously;
Try to ask your question as clearly as possible;
Did you already try to solve the problem? Please mention this;
Is your problem solved by a visitor then let him/her know in this forum;
To give a response to a question or answer, do not use this form but click on the button 'reply to this question';
Your question will be posted here and emailed to our subscribers. Therefore, avoid filling in personal details.

new questions and answers
new manuals

You will receive an email to register for one or both of the options.

Get your user manual by e-mail

Enter your email address to receive the manual of Medion MD20130 in the language / languages: English, German, Dutch, Danish, French, Italian, Spanish as an attachment in your email.

The manual is 3,33 mb in size.

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.

Info

Medion MD20130 Manual

Product: