Refresh rate 100hz lcd

Discussion in 'LCD & LED LCD TVs Forum' started by christhedon, Jan 4, 2007.

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  1. christhedon

    christhedon
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    Since I understand that lcd's pixels are either on or off what does a refresh rate of 100hz mean for them? and why is it better than 50hz? (Other than the number is bigger which gives the impression it would be better)

    Can anyone give a layman common sense type answer to this questions?

    Thanks,

    Chris
     
  2. thommcghome

    thommcghome
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  3. christhedon

    christhedon
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    First I thought it was a good article and then I realised I didn't really get it as it was too technical. Surely there is a two line laymen answer to this question.
     
  4. InterNUT

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    Anyone ??? :confused:
     
  5. CFCCFC

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    What does it mean?
    50hz or 100hz is is the speed at which the picture on your screen is redrawn or flashed in front of your eyes with an lcd screen.

    Slower refresh rates provide a noticable flicker, 15hz or below would look very jerky. So the higher the better. Higher refresh rates create a steady picture (and is easier on your eyes).

    At 50hz the picture is redrawn 50 times per second, at 100hz it is redrawn 100 times in a second.

    Hence the new 100hz technology gives a better picture.

    How does it work?
    Either read the technical stuff, or in layman's terms, the magic box'a trix in the thingamabob makes the screen fairies stay awake all the time. It's Advanced Wizardry. If you knew how to do it, you'd have to promise never to say or the Faculty would send someone round from the Assassin's Guild to inhume you.
     
  6. Rajveer

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    Why would we need a picture to be drawn at 100 times a second though, the human eye can only capture at around 25-30 frames per second no? Not bashing, but genuinly asking, I've never really understood that (even though I do admit 60 fps does look smoother than 30...) :)
     
  7. LV426

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    Flicker is an artefact that LCD screens are totally unaffected by.

    According to that article, there are other reasons why refreshing the image more frequently may give benefits, but flicker isn't one of them in this case.
     
  8. thommcghome

    thommcghome
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    Film gets away with low such frame rates as they use motion blur. Try these articles on the matter;

    http://amo.net/NT/02-21-01FPS.html
    http://www.100fps.com/how_many_frames_can_humans_see.htm

    There's also this program (Read the Readme file before use);
    http://www.tweakguides.com/files/FPSCompare_v05_beta.zip

    You can Google more articles on the matter though. Regardless; the frame rate used in film is no indication of how much we can see.
     

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