LCD montors- Why set refresh to 60hz instead of 85hz+?

[JEDI]

I've read and been told that the refresh rate should be set to 60hz for LCD's as opposed to the highest possible for CRTs.

Why is lower the better for LCDs?

 

[yhelothar]

because the highest possible on an LCD is usually at 60Hz.

 

[Peter]

No, because LCD's don't refresh. All pixels are on all the time, there is no electron beam scanning a surface, refreshing glowing phosphor.
The slower signal is better on an analog VGA connection because the LCD panel's resampling unit has an easier task of phasing in to the signal, not the least because the signal quality from not-so-good VGA cards is drastically better at lower frequencies.

 

[Bateluer]

Originally posted by: Peter
No, because LCD's don't refresh. All pixels are on all the time, there is no electron beam scanning a surface, refreshing glowing phosphor.
The slower signal is better on an analog VGA connection because the LCD panel's resampling unit has an easier task of phasing in to the signal, not the least because the signal quality from not-so-good VGA cards is drastically better at lower frequencies.

Aye.

When I set my LCD's refresh above 60hz, it makes the text blurry. At 60hz, everything is crystal clear and sharp.

 

[Peter]

Then either the VGA signal is too washed out to begin with, or the re-digitizing logic inside the panel can't phaselock onto the signal properly.

DVI eliminates any such effect 😉

 

[koj]

so 60hz is safe on the eyes when using an lcd compared to a crt?

 

[JEDI]

apparently, yes.

crt's have a refresh rate. the faster the screen refreshes, the better it it on your eyes. LCD's do not need to refresh.

hm..why is 60hz the minimum?

 

[SynthDude2001]

Originally posted by: JEDI
apparently, yes.

crt's have a refresh rate. the faster the screen refreshes, the better it it on your eyes. LCD's do not need to refresh.

hm..why is 60hz the minimum?

Probably because most graphics adapters do not support refresh rates much lower than that....60hz has been the standard.

 

[Jeffyboy]

You make your video card work harder by refreshing more often.. and it is not required on an LCD panel.
Have you ever seen flicker on an lcd panel? It is not needed for game play either.... no way could you react fast enough to make a diference in the slightest

Jeff

 

[Johnbear007]

LCD's do not refresh. That is why they are better for your eyes than any CRT even refreshing at 200hz