Can somebody explain me what Dead Pixels are?

Can someone please explain me what dead pixels are?
It would be great if you can post pics explaining dead pixels

 

I think a "dead" pixel is one which never lights up, so it stays black all the time. I have one which took me a month to notice because I thought it was a speck of dust. See the attached picture (the offending pixel is the black mark halfway below the "o" and the bottom of the photo). This is a 1680 x 1050 display so in reality it is quite small.

A "stuck" pixel is one which stays the same colour all the time. This can be more obvious and visually annoying. For example, a bright red spot on a black background.

John

 

John explained it pretty well.
For more information check out wikipedia.
Dead pixels.
Stuck pixels.

 

Hmmm.....either my eyes are spoilt or I'm seeing things
Looking at the moniter of my brand new Asus A8Js it seems its got like a 1000 dead pixels

 

Got a picture of it?

A normal LCD wouldn't have that many dead pixels unless there was a large amount of impact. It wouldn't even pass Q.C. heh.

 

I have a little utility called DEADPIX.EXE (248kb).*
You run it and it cycles through the colors so you can easily spot if you have one.

Mfrs don't consider a screen "defective" unless it has several (it varies, 4-9?), but you can return it if it's new and try again. (I returned my first LCD monitor in 2002 because it had one.)

*I don't think I can send a file like that, but you could search for it or something similar.

 

A perennial favourite application for checking LCD displays is Dead Pixel Buddy.

 

dead pixels FTL

 

Take a picture of it and post it here so we can have a look.
If it does have that many then you can send it back to get it replaced.

 

It's very unlikely that a laptop screen of any kind would ship with that serious a problem, but it's always possible. I do know that there was a problem with the early BIOS revisions of the A8Js that would make the screen appear very grainy, which may look somewhat like dead pixels. You could try updating to v2.10.

 

i thought i read something about them here once.... http://www.google.com

 

Thanks for the utility.
I dont have any dead pixels Dead Pixels Buddy helped me find that out.
But yes the Screen does appear very grainy. I also updated the BIOS. It still does.

 

Luckily I dont have any dead pixels thanks to Pixel Buddy. The screen appears too god **** grainy. I've even updated the BIOS. Still no help.