what a difference?

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can somebody tell me why the pixel response time in lcd monitors is
measured in [ms] while the rise/fall time of dot pitch in crt monitors
is measured in [ns]. I know this is quite different structure of these
monitors but I mean the values they depend on (especially in lcd).
maybe there's any example to caunt the response time?
 
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On 17 May 2004 09:10:18 -0700, sonkar@wp.pl (sonia) wrote:

>can somebody tell me why the pixel response time in lcd monitors is
>measured in [ms] while the rise/fall time of dot pitch in crt monitors
>is measured in [ns]. I know this is quite different structure of these
>monitors but I mean the values they depend on (especially in lcd).
>maybe there's any example to caunt the response time?
In lcd screens you have to move molecules,
in crt screens you have to move electrons
and molecules are more than 10,000 times heavier.
 
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"sonia" <sonkar@wp.pl> wrote in message
news:52eee87b.0405170810.24995227@posting.google.com...
> can somebody tell me why the pixel response time in lcd monitors is
> measured in [ms] while the rise/fall time of dot pitch in crt monitors
> is measured in [ns]. I know this is quite different structure of these
> monitors but I mean the values they depend on (especially in lcd).
> maybe there's any example to caunt the response time?

Well, the basic reasons behind this could take quite some
time to cover in any depth at all, IF I understand what you're
asking here. The simplest answer is that (a) it IS very different
mechanisms we're talking about here (on the one hand, you have
an electron beam delivering a pretty good wallop of energy to
a small area of phosphorescent chemicals as it passes by, while
on the other a relatively low voltage - or better, the electric
field that it creates - is causing the molecules within a liquid to
re-orient themselves; and (b), once again, the CRT really doesn't
HAVE any such things as pixels, so to speak of a "pixel response
time" in that technology is somewhat meaningless.

Bob M.