Because an LCD's pixels don't turn off: they stay on until the picture changes. Each pixel is controlled by a transistor that 'holds' the colour value. Therefore they never 'refresh' in that sense of the term. Cranking up the refresh rate on an LCD isn't productive and can lead to glitching on the screen.riddick said:Thanks. I saw that the resolutions can go quite high, but i would like to know how high the refresh rates can go on a crt. My friend has funny eyes, and has to have high refresh rates. I also did not know that lcd should be left at 60hz..why is that?