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Old 11-06-2011, 12:54 PM   #37
elcreative
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Quote:
Originally Posted by HarryT View Post
It's not - it's a matter of physics. A pixel on an LCD screen does not repeatedly dim and need to be refreshed again, as the phosphor on a CRT does. The backlight behind the screen is shining with a constant brightness - it's not flickering. They used to flicker, in the "old days" when LCD screens had fluorescent backlights, but these days LCD screens have LED backlights, which have a constant light output.
But the pixel does change at the refresh rate, otherwise you'd have a static image... the light doesn't come from the pixel, it is transmitted through it... and the pixels vary at the refresh rate to give a variable picture... the screen is refreshed at the refresh rate (60, 75 whatever per second) and, whilst the screen doesn't blank between refreshes as CRT did, it still changes at that rate per second...
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