LCD tech maturing ?

L

lindon

Johannes H Andersen said:
Yes, I never believed in being lumped with dead pixels. Finally, I will
start thinking of replacing my CRT.

this only covers dead pixel not suck pixel which are a lot more common
problem,

my sony 17in lcd coverd me if it got any dead pixels on the srceen and so
dose my 27in screen but none of them cover stuck pixel, unless the stuck
pixel is green,
 
C

Christo

burchill said:
http://english.chosun.com/w21data/html/news/200412/200412300018.html

tinyURL goodness

http://tinyurl.com/6erao

Samsung have anouced a zero dead pixel policy.

This is very good news, I was thinking of getting an lcd soon but I might
wait a few months to see waht effect this has on other lcd manafacturers.

my old man purchased a pc from currys with a LCD screen included it was an
emachines computer and the lcd is decent enough, it doesnt have a big chunky
frame and it looks quite smart it was purchased about 8 months ago

no dead pixels yet, no problems with the monitor at all

its all sound
 
J

Johannes H Andersen

Christo said:
my old man purchased a pc from currys with a LCD screen included it was an
emachines computer and the lcd is decent enough, it doesnt have a big chunky
frame and it looks quite smart it was purchased about 8 months ago

no dead pixels yet, no problems with the monitor at all

its all sound

But that's not the point. You were lucky getting no dead pixels, but this
has no bearing on what another buyer might get if there is no guarantee
in advance of buying. This is precisely this sort of hocus-pocus
the shops use when they show a perfect demo as an example of their TFTs.
Nothing less than a complete zero dead pixel policy will do.
 
L

loz

burchill said:
http://english.chosun.com/w21data/html/news/200412/200412300018.html

tinyURL goodness

http://tinyurl.com/6erao

Samsung have anouced a zero dead pixel policy.

This is very good news, I was thinking of getting an lcd soon but I might
wait a few months to see waht effect this has on other lcd manafacturers.

Well I don't know where samsung announced this. Apart from the comment on
the news site you linked to there is no mention of this on Samsung's own
website, or any of their press releases or own news items.

Until it is clearly stated by Samsung themselves, I wouldn't go buying an
LCD assuming this policy to be in force.

Loz
 
J

John

http://english.chosun.com/w21data/html/news/200412/200412300018.html

tinyURL goodness

http://tinyurl.com/6erao

Samsung have anouced a zero dead pixel policy.

This is very good news, I was thinking of getting an lcd soon but I
might wait a few months to see waht effect this has on other lcd
manafacturers.

Actually if you look at the consumer reviews you rarely see anyone
mentioning any problems with dead or stuck pixels so they seem to have
been producing pretty good panels for a while now but they just didnt
want to guarantee it I guess. You can damage it easily by knocking it
and dropping it so even if they produced zero dead/stuck pixels you
could get lots of people returning screens from abuse. Someone I know
dropped a camera and it developed a stuck green pixel that was really
noticeable on the LCD screen right after that.
 
K

kony

Actually if you look at the consumer reviews you rarely see anyone
mentioning any problems with dead or stuck pixels so they seem to have
been producing pretty good panels for a while now but they just didnt
want to guarantee it I guess. You can damage it easily by knocking it
and dropping it so even if they produced zero dead/stuck pixels you
could get lots of people returning screens from abuse. Someone I know
dropped a camera and it developed a stuck green pixel that was really
noticeable on the LCD screen right after that.


I suspect they'll simply sort the panels and those with dead
pixels will appear in lower priced off-brands.
 
B

burchill

Well I don't know where samsung announced this. Apart from the comment on
the news site you linked to there is no mention of this on Samsung's own
website, or any of their press releases or own news items.

Until it is clearly stated by Samsung themselves, I wouldn't go buying an
LCD assuming this policy to be in force.

Loz

As with anything on the internet it might not be true, time will tell
obviously, if it is a hoax then its a fairly dull one.

If true there are a couple of possibilities, firstly that samsung will
simply increase the price of their lcd's to cover the production of the
defective ones. LCD's and dead pixels have got a lot of bad press,
people might well be willing to pay more for a quality guarantee.

The second possibility is that they have improved the manafacturing
process to the point where the number of defective panels is very low.

They could also be planning to rebrand defective panels and sell them,
in fact they could do this in either possibility.

The best situation for the consumer is the second one though, better
quality panels and more competition.
 
B

burchill

I suspect they'll simply sort the panels and those with dead
pixels will appear in lower priced off-brands.

Which is why it will be interesting to note which other LCD
manafacturers follow Samsungs lead...
 
D

DevilsPGD

In message <[email protected]> burchill
Samsung have anouced a zero dead pixel policy.

So do I. I've bought a couple LCDs, and I'd have returned any one that
wasn't in working order when I purchased it.
This is very good news, I was thinking of getting an lcd soon but I
might wait a few months to see waht effect this has on other lcd
manafacturers.

Agreed. Promises to be interesting.
 
B

burchill

Well I don't know where samsung announced this. Apart from the comment on
the news site you linked to there is no mention of this on Samsung's own
website, or any of their press releases or own news items.

Until it is clearly stated by Samsung themselves, I wouldn't go buying an
LCD assuming this policy to be in force.

Loz

http://www.forbes.com/infoimaging/f...magingasiapulse_2004_12_30_ix_9333-0197-.html

http://tinyurl.com/3vhuw

According to this article the policy only affects south korea, they are
considering whether to employ the policy worldwide.
 
N

Noozer

Anton Gÿsen said:
Now they just need to sort out the reaction times.

Why? OLED is cheaper and easier to make and will outshine LCD once the
manufacturing lines start up.

LCD is already a dead end as far as technology goes.
 
R

recursor

Noozer said:
Why? OLED is cheaper and easier to make and will outshine LCD once the
manufacturing lines start up.

LCD is already a dead end as far as technology goes.
So how come Samsung are about to invest billions in a new lcd fab. ?
 
N

Noozer

recursor said:
So how come Samsung are about to invest billions in a new lcd fab. ?

I have no idea unless there is something about OLED that they aren't telling
us.

OLED is already in use on some cellphones and camera displays so it does
work.

OLED manufacturing can be done with an "inkjet printer" type technology, so
it should be pretty cheap.
 
L

Lordy

I have no idea unless there is something about OLED that they aren't
telling us.

OLED is already in use on some cellphones and camera displays so it
does work.

OLED manufacturing can be done with an "inkjet printer" type
technology, so it should be pretty cheap.

OLED is currently good for **Simple** portable displays. Not the kind of
thing you would want to watch a DVD on AFAICT ...

http://komar.cs.stthomas.edu/qm425/01s/Tollefsrud2.htm

[Advantages snipped :) !!!!]

Disadvantages:

- Engineering Hurdles – OLED’s are still in the development
phases of production. Although they have been introduced commercially
for alphanumeric devices like cellular phones and car audio equipment,
production still faces many obstacles before production.



- Color – The reliability of the OLED is still not up to par.
After a month of use, the screen becomes nonuniform. Reds, and blues
die first, leaving a very green display. 100,000 hours for red,
30,000for green and 1,000 for blue. Good enough for cell phones, but
not laptop or desktop displays.



- Overcoming LCD’s – LCD’s have predominately been the preferred
form of display for the last few decades. Tapping into the multi-
billion dollar industry will require a great product and continually
innovative research and development. Furthermore, LCD manufacturers
will not likely fold up and roll over to LCD’s. They will also continue
to improve displays and search for new ways to reduce production costs.





Future Outlook:

The OLED technology faces a bright future in the display
market, as the ever-changing market environment appears to be a global
race to achieve new success. Eventually, the technology could be used
to make screens large enough for laptop and desktop computers. Because
production is more akin to chemical processing than semiconductor
manufacturing, OLED materials could someday be applied to plastic and
other materials to create wall-size video panels, roll-up screens for
laptops, and even head wearable displays.
 
L

Lordy

I have no idea unless there is something about OLED that they aren't
telling us.

OLED is already in use on some cellphones and camera displays so it
does work.

OLED manufacturing can be done with an "inkjet printer" type
technology, so it should be pretty cheap.

OLED is currently good for **Simple** portable displays.

http://komar.cs.stthomas.edu/qm425/01s/Tollefsrud2.htm

[Advantages snipped :) !!!!]

Disadvantages:

- Engineering Hurdles – OLED’s are still in the development
phases of production. Although they have been introduced commercially
for alphanumeric devices like cellular phones and car audio equipment,
production still faces many obstacles before production.



- Color – The reliability of the OLED is still not up to par.
After a month of use, the screen becomes nonuniform. Reds, and blues
die first, leaving a very green display. 100,000 hours for red,
30,000for green and 1,000 for blue. Good enough for cell phones, but
not laptop or desktop displays.



- Overcoming LCD’s – LCD’s have predominately been the preferred
form of display for the last few decades. Tapping into the multi-
billion dollar industry will require a great product and continually
innovative research and development. Furthermore, LCD manufacturers
will not likely fold up and roll over to LCD’s. They will also continue
to improve displays and search for new ways to reduce production costs.





Future Outlook:

The OLED technology faces a bright future in the display
market, as the ever-changing market environment appears to be a global
race to achieve new success. Eventually, the technology could be used
to make screens large enough for laptop and desktop computers. Because
production is more akin to chemical processing than semiconductor
manufacturing, OLED materials could someday be applied to plastic and
other materials to create wall-size video panels, roll-up screens for
laptops, and even head wearable displays.
 
R

recursor

<SNIP>
Must have drunk too much recently, I seem to have developed double vision :)
Good post though, oled currently only good for small screens, the new Samsung fab is for 24" +
(up to 50" ish) TFT's I believe. (if anyone from Samsung is reading I'll take any spare 48" screens
of your hands whenever you like)
 
L

Larc

| OLED is currently good for **Simple** portable displays. Not the kind of
| thing you would want to watch a DVD on AFAICT ...
|
| http://komar.cs.stthomas.edu/qm425/01s/Tollefsrud2.htm

Whether OLED will replace LCD or something else will, LCD as currently
employed is a relatively weak technology IMHO. When any technology
overall isn't as good as what it claims to be replacing, it's
definitely not an acceptable stopping place. I think any valid excuse
to get rid of it is going to be jumped on, kicking and screaming of
LCD manufacturers notwithstanding.

Larc



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