Quote:
Originally Posted by andrewed
Hi,
I really, really wish that what I said were incorrect.
While LED light is constant and has improved the viewability of computer screens, backlighting is separate from the display itself and the actions of its pixels.
Regrettably, LCD pixels do turn on and off that often. The refresh rate (60-90Hz) refers to the display, not the backlight. It is what makes LCD capable of both showing quickly moving images and irritating to the eye.
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When an LCD screen is showing a static image, such as a page of text, the pixels do not turn off and on when the display refreshes. Yes, of course the image can change 60 times a second (or whatever the refresh rate is), but individual pixels will not change unless instructed to do so by the display controller. The pixels certainly do not turn off and on every time the display refreshes.