747534
120
Zoom out
Zoom in
Previous page
1/124
Next page
120 af 124
12. Pixelfejl i LCD-skærme
5 Pixel
Linjer
Subpixel
Pixel
blå
grøn
rød
5 Pixel
I aktiv matrix TFT-skærme (TFT) med en opløsning på 1600 x 900 pixel, som
hver er sammensat af tre subpixels (rød, grøn, blå), anvendes i alt ca. 4,3 mio.
måltransistorer. På grund af det meget høje antal transistorer og den yderst
komplicerede fremstillingsproces som dette medfører, kan der i enkelte tilfæl-
de forekomme svigt eller et forkert valg af hhv. pixels eller enkelte subpixels.
Man har mange gange tidligere forsøgt med de mest forskellige metoder at
definere antallet af tilladte pixelfejl. Men de var for det meste yderst kompli-
cerede og helt forskellige fra mærke til mærke. Man følger derfor ved garanti-
behandling af alle TFT-displayprodukter de strenge og transparente krav i ISO
9241-307, klasse II standarden. Her følger et kort sammendrag:
ISO-standarden ISO 9241-307 giver bl.a. almengyldige definitioner af pixelfejl.
Pixelfejlene kategoriseres i fire fejlklasser og tre fejltyper. Hver enkelt pixel er
igen sammensat af tre subpixels med hver sin grundfarve (rød, grøn, blå).
Pixelfejlklasse Fejltype 1
konstant
lysende pixel
Fejltype 2
konstant
sort pixel
Fejltype 3
defekt subpixel
lysende sort
00000
I112
1
0
1
3
5
II 2 2 5
5-n*
0
0
2xn*
10
III 5 15 50
50-n*
0
0
2xn*
100
IV 50 150 500
500-n*
0
0
2xn*
1000
n* = 1,5
Det tilladte antal fejl af ovennævnte typer i hver fejlklasse skal ses i forhold til en million pixel og skal omregnes svaren-
de til displayets fysiske opløsning.
120


Need help? Post your question in this forum.

Forumrules


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:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Medion MD 20327 - Akoya P54037 at:


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 MD 20327 - Akoya P54037 in the language / languages: English, German, Dutch, Danish, French, Italian as an attachment in your email.

The manual is 1,92 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