dead pixels in LCD displays ?

[drednox]

can someone please explain to me the practical implications of having a dead pixel in my LCD ?

i see articles and company policies etc. that they take return when teh LCD has 6 dead pixels, 8 dead pixels, etc. now correct me if i am wrong, but isnt there a gazilion pixels on my monitor ? and why would i care if a single or 2 or 3 or 8 of them go dead ? will they even be visible ? or will they shut down my monitor somehow ?

can someone please explain what exactly the problem is ? and what does it look like when i look at my monitor ? since i have never seen any of those dead pixels how can i tell if i have any ? and if this is a serious issue, how long does a monitor have before it needs to be repaired/rebuild/replaced ?


thanks

 

[Gosharkss]

Limitations of the LCD manufacturing process sometimes result in dead sub-pixels. Three sub-pixels one red, one green and one blue make up a ?Pixel?. A dead ?pixel? three adjacent sub-pixels is rare, however dead sub-pixels are very common. A "dead sub-pixel" can take the form of either a black or colored spot on a white background or a white or colored dot on a black background. Since this is a manufacturing issue sub-pixels typically will not go bad over time.

The manufacturing process for LCD displays requires millions of transistors in each panel that make up the sub-pixels. For example a 1280 x 1024 panel has (1280 x 1024 x 3) = 3932160 sub pixels.

To test for dead sub pixel use the MonitorsDirect ToolKit

 

[drednox]

aaaaa

ok, thanks a lot


my LCD kicks butt at the moment, no blotches miscolorations or anything, but its still nice to know for the future.

 

[lung]

Actually, wouldn't a pixel that is stuck either as black or white be a dead/stuck full-pixel and not a sub-pixel? If it is a color, then it would be a dead/stuck sub-pixel(s).