[ltp] Lines on TFT screen (not linux related)

[Robert A. Munro]

It's likely dead connections for that entire pixel column.  LCDs are
constructed sort of like memory, in a row and column matrix.  Pixels
have red/green/blue (RGB) components.  In your case, the red /green
connections for an entire column of pixels seem not to be working, so
what you see is a blue stripe.  That qualifies as a defective screen.

Good luck,
Robert
 

Michael Cameron wrote:
> 
> I'm more interested in whether or not this is likely to be dead pixels, my
> understanding is that >5 is considered defective, a whole vertical line is
> 1024 which I thought would have been caught by a quality control process.
> Also a little unusual if these are nomally fairly randomly distributed about
> a screen.
> 
> Anyone got any suggestions for causes other than dead pixels?
> 
> Cheers,
> 
> Micahel
> 
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