LCD TV Rating

LCD TV What does refresh rate mean?

would like to buy a new LCD flat screen, but looking at two similar models with big difference in price. The only thing that I can see is that one has a 60Hz refresh rate, and the other has 120Hz. What the heck is refresh rate, and would I notice a difference?

Public Comments

1. with 120Hz you will see much clearer picture verse a 60hz
2. Refresh rate is more or less how long it takes the TV to update your screen with the next frame. A higher number means more cycles, which means faster, although it's often difficult to perceive a significant difference in anything greater than 60Hz.
3. The refresh rate is how fast the screen updates. 60 Hertz is 60 times per second 120 Hertz is 120 times per second Would you notice? it depends on the source, if it's an HD DVD Player, probably, if it's on your home computer and you're not a gamer..then no. good luck with that ~m~
4. With a 60hz tv can display a maximum of 60 frames(images) per second and a 120hz tv can display a max of 120 it doesn't really matter though because almost all forms of tv and movies have only 24, 30 or 60 frames per second so you won't see a difference.
5. The refresh rate (most commonly the "vertical refresh rate", "vertical scan rate" for CRTs) is the number of times in a second that display hardware draws the data it is being given. This is distinct from the measure of frame rate in that the refresh rate includes the repeated drawing of identical frames, while frame rate measures how a video source can feed an entire frame of new data to a display. Much of the discussion of refresh rate does not apply to the liquid crystal portion of an LCD monitor. This is because while a CRT monitor uses the same mechanism for both illumination and imaging, LCDs employ a separate backlight to illuminate the image being portrayed by the LCD's liquid crystal shutters. The shutters themselves do not have a "refresh rate" as such due to the fact that they always stay at whatever opacity they were last instructed to continuously, and do not become more or less transparent until instructed to produce a different opacity. The closest thing liquid crystal shutters have to a refresh rate is their response time, while nearly all LCD backlights (most notably fluorescent cathodes, which commonly operate at ~200Hz) have a separate figure known as flicker, which describes how many times a second the backlight pulses on and off.