I would like to know how the refresh rate can be calculated for LCD display? what is the best refreshrate for displaying an image with 320x240 resolution on LCD
2007-07-03 18:32:48 · 6 answers · asked by Sai 1 in Computers & Internet ➔ Hardware ➔ Monitors
LCD monitors typically have natural refresh rates, or rates tied more to the hardware and not necessarily the resolution of said hardware.
2007-07-03 18:36:17 · answer #1 · answered by matthew_hetland797 3 · 0⤊ 0⤋
LCD monitors aren't the same as CRT monitors.
Use ONLY the "Native" resolution AND Screen Refresh Rate as specified on the manufacturer's web site for your LCD monitor.
Then, right-click on the Desktop and choose Properties to open the Display Properties Window. In Display Properties > Settings TAB, set the correct "Native" resolution, then click on the Advanced Button, then the Monitor Tab to set the correct Screen Refresh Rate.
"for displaying an image with 320x240 resolution on LCD" will only display as a 3" by 2" image at 100% zoom. If you try to magnify it, it will only look worse.
2007-07-04 01:45:17 · answer #2 · answered by ELfaGeek 7 · 0⤊ 0⤋
LCD internal refresh rates can not be calculated.
60 Hz.
LCDs are different from CRTs but they do have an internal refresh rate - typically 60Hz which is how often the setting of a pixel is reset.
LCDs work by putting a voltage across the liquid crystal material causing it to twist and alter it's polarization effect. However if you leave a DC voltage across the materials they can pick up a residual charge and when you return to a white screen you get a shadow of the old image - kind of like phosphor burn on a CRT. This is called image sticking.
To get around this an AC voltage is applied. This is done by alternately applying a positive voltage to the pixel, then an equal but negative voltage which has the same effect on the liquid crystal but there is no net DC voltage, so no net charge and no image sticking.
2007-07-04 09:13:05 · answer #3 · answered by Simon T 7 · 0⤊ 0⤋
Changing the refresh rate in the driver won't have an effect on an LCD display. LCD screens don't work the same was as a CRT monitor, there's no scanning electron gun building the image, so there isn't a a refresh rate. The image is solid and stable as the light is from a backlight that is on constantly rather than the phosphors being excited as they are struck by the electon beam.
2007-07-04 04:37:51 · answer #4 · answered by Craig H 1 · 0⤊ 1⤋
LCD doesn't have refresh rate. It is the rate of how many frames being sent. LCD got a constant pixel that is "lit". So, it doesn't need to "redraw" the image.
2007-07-04 01:39:32 · answer #5 · answered by Rudy D 2 · 0⤊ 1⤋
use the "true color definition & 1024X768 resolution"
2007-07-04 01:41:47 · answer #6 · answered by Faith K 1 · 0⤊ 1⤋