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Questions about TFT displays
Well, response time usually refers to the rate at which the pixels can switch from full ON to OFF. The lower the response time, the better, as it will reduce 'ghosting' artifacts, where a fast moving image would have a ghost trail of afterimages behind it.
As for the refresh rate.. most LCDs are 60-85Hz.. however, you have to remember than unlike a conventional CRT that has to scan the electron beam across the whole tube to keep the phosphor glowing, LCD transistors are on or off (or in some intermediate state to provide contrast and differant colors). The refresh rate for an LCD is the rate at which the framebuffer updates the transistor status. So for static images like a windows desktop, it could be refreshing at 10Hz and you wouldn't know it (until you move the mouse).
For games however, LCDs still aren't quite up to CRT standards due to the ghosting issues.. the liquid crystals and traisistors can't keep up with extremely high speed motion all that well, so some motion blur will occur. Its a lot better than it used to be however. I only find it to be noticable with less expensive LCDs (especially laptops).
As for the refresh rate.. most LCDs are 60-85Hz.. however, you have to remember than unlike a conventional CRT that has to scan the electron beam across the whole tube to keep the phosphor glowing, LCD transistors are on or off (or in some intermediate state to provide contrast and differant colors). The refresh rate for an LCD is the rate at which the framebuffer updates the transistor status. So for static images like a windows desktop, it could be refreshing at 10Hz and you wouldn't know it (until you move the mouse).
For games however, LCDs still aren't quite up to CRT standards due to the ghosting issues.. the liquid crystals and traisistors can't keep up with extremely high speed motion all that well, so some motion blur will occur. Its a lot better than it used to be however. I only find it to be noticable with less expensive LCDs (especially laptops).
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