LCD, Dead Pixels

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da_a_78

Hello,

Can somebody tell from experience whether "dead pixels" are a flaw in
the manufacturing process or an LCD weakness which may emerge over
time? It's important for me to ensure that once I purchase an LCD
monitor that is perfectly free of dead pixels, it will continue to stay
that way for years to come. Otherwise, I'd be better off putting the
money on a good CRT, because I know I wouldn't stand even a single dead
pixel, and I know I'll have a hard time replacing a faulty LCD panel.

Thank you
 
Hello,

Can somebody tell from experience whether "dead pixels" are a flaw in
the manufacturing process or an LCD weakness which may emerge over
time? It's important for me to ensure that once I purchase an LCD
monitor that is perfectly free of dead pixels, it will continue to stay
that way for years to come. Otherwise, I'd be better off putting the
money on a good CRT, because I know I wouldn't stand even a single dead
pixel, and I know I'll have a hard time replacing a faulty LCD panel.

Thank you
Click to expand...
My two penn`orth. Give me a good CRT anytime. Let`s wait `till they perfect
the technology first. It`s no fun being a guinea pig. (Especially if it
costsalot ).
bw..OJ
 
Most concern is expressed when buying a new monitor - any links to the
statement 'it will happen over time'?

FWIW I replaced a 17" Ilyama CRT with a 17" LG LCD and would never go back -
yes this is mainly to do with the desk space saving but have no complaints
about the picture quality either.

BillL
 
Thanks. Your comments will help me make a wiser purchase.
Click to expand...

I was a real late adopter of LCDs as the early ones seemed grossly
priced and often looked weird - washed out or there was a kind of
silvery metallic sheen at some angles. I was also paranoid about dead
pixels. I was finally won over by the low prices and space savings and
wouldnt want to get a CRT either especially since they improved the
ghosting issue with games. There is a compromose though. Reviewers
like Anandtech used to harp on the 6bit-8 bit aspect. Usually to speed
up screens which were fairly slow even a year or two ago which caused
game ghosting problems --- they started making a flood of 6bit panels
that were much faster but dont get as many shades except by
dithereing. In tests reviewers said if you are a picky graphics
designer the banding issues with subtle shades of the various colors
might make a CRT or 8 bit LCD slower planel a better choice. Ive got a
6 bit and it really isnt noticeable so far.

Another thing generally speaking makers have really improved in
regards to bad pixels and many people with cheap LCDs dont see them
anymore. I bought one for $150 zero bad pixels.

My 19" viewsonic was zero then I saw a prominent BLUE partially stuck
pixel after a while. This really bugged the heck out of me. Everytime
I watched a movie with a dark scene youd see this blue pixel floating
close to the middle of the screen. It only seemed to be stuck on blue
during black or dark shades. Strangely enough that was when I
discovered I had a really bad stick of mem. While I was fretting and
moaning about the bad pixel I replaced the bad stick and the bad pixel
disappeared. I dont know if itwas related or not.

They have been hyping alternative technologies but they really arent
catching on. One was slim CRTs. Super slim ones that looked only 4
inches or so thick. I dont see them anywhere. That was supposed to
give LCDs a run for their money this year. These were also hyped.

OLEDs
http://www.cnn.com/2004/TECH/01/07/hln.wired.oleds/

SED
http://www.videsignline.com/news/60400239
 
It will happen over time.

Sorry, but this is not 100% correct. While it is certainly possible for a
pixel to fail over time, it hardly ever happens this way.

I have been using LCD monitors for about 7-8 years now and have done
extensive research on them in the early going. I haven't kept up on them for
a while now but I do remember that, according to NEC, dead pixels are almost
always a result of the manufacturing process. If you buy an LCD with no dead
pixels, it should stay that way throughout the life of the monitor.

Please refer to the following link under the "summary" section.

http://www.necdisplay.com/support/css/Techlibrary/lcd_dead_pixel.htm

Having owned no less than five LCD's, my experience with them seems to
support NEC's tech brief. I kept my first LCD for almost five years and I
have had my current LCD for about four years. Always made sure the ones I
bought had no dead pixels and I have never seen a single pixel suddenly "go
bad".
 
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