Question

Difference between CRT monitor and LCD monitor

Asked by: sarahsthss

I want to know, what is the difference between CRT and LCD monitor. Please give an example for each. Is an LG monitor a CRT monitor?.

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Asked On
2003-04-01 at 23:09:21ID20571143
Tags

lcd

,

between

,

crt

,

difference

,

monitor

,

CRT

Topics

Computer Displays / Monitors

,

Miscellaneous Hardware

,

LCD & Plasma

Participating Experts
2
Points
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Comments
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Answers

 

by: pjknibbsPosted on 2003-04-01 at 23:12:00ID: 8251694

LG is the name of a company who may (or may not) produce CRT and/or LCD monitors. CRT means "cathode ray tube"--e.g. the normal bulky glass-fronted monitors you're probably familiar with. LCD monitors are Liquid Crystal Displays, which are much thinner and lighter than CRTs but have a fixed resolution (e.g. I have a 15" LCD monitor at home which has a resolution of 1024x768).

 

by: CRAKPosted on 2003-04-01 at 23:35:33ID: 8251788

Another important difference is that CRT monitors can run at different frequencies. To avoid flickering at resolutions shown at <=60Hz (vertical), you could display the same resolution at a higher frequency (>=75Hz, depending on the quality of both the monitor and the VGA card).
LCD monitors run at 60Hz (I think they all do). However, since illuminating pixels die out relatively slow, to won't see any flickering. It may have a disadvantage in fast games though.
(More expensive) LCD monitors MAY have additional features, like a rotating screen: you could adjust your screen from landscape to portrait.

 

by: pjknibbsPosted on 2003-04-02 at 23:10:29ID: 8259336

CRAK: LCD monitors usually don't care much what refresh rate you set as the input, so long as it's not out of range for that monitor. However, you're right about the time taken to switch the pixels on and off being so slow--even on absolute top-end LCDs I don't think this lag drops below 20ms, which would be equivalent to a 50Hz refresh rate.

LCDs don't flicker AT ALL, though. It's not like a CRT where the dots have to be "refreshed" on each pass in order to keep the image visible--once an LCD pixel is set a particular way it STAYS set that way so long as the power is turned on, unless the controller switches it to another state.

 

by: CRAKPosted on 2003-04-03 at 00:27:47ID: 8259643

Thanks

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