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Which is better Plasma or LCD?

Discussion in 'LCD & LED LCD TVs Forum' started by Captain chaos, Aug 8, 2003.

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  1. Captain chaos

    Captain chaos
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    Just a quick question, which is the preferred medium, LCD or Plasma?

    What are the pro's and con's of each?

    Many thanks.
     
  2. LV426

    LV426
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    All flat panel technologies have to use a scaler to produce the pixel structure that the screen requires, and the standards of these can vary hugely. Also, the actual resolutions of various screens can and do differ. Typically but not always, LCDs have more resolution (pixels) than Plasmas. Assuming, then, that you are comparing a Plasma and an LCD that have scalers of equivalent quality, and have the same native resolution (pixel structure) (ie - we are just concerned with the nature of the screen itself) these are factors that come to mind.....

    For both: Perfect geometry and convergence, absolutely no instability (bounce) from voltage regulation issues, and no disturbance from external magnetic fields - these are all attributes of CRTs only.

    LCD: Pro: No screen burn from fixed images. Absolutely no visible refresh rate flicker. Better fill ratio than plasma (the illuminated part of each pixel vs. the black grid that separates them is larger). The screen is illuminated by a backlight which is the only component likely to wear - and it can be replaced, in some cases, by the user. LCD the only flat panel option at smaller screen sizes.

    LCD Con: Pixels never go completely opaque - back light leaks through hence blacks can look grey. Viewing angle on some LCDs is restricted - most often below the horizontal, but worse examples show this in other planes. Both of these vary hugely from model to model. A failed pixel with usually fail bright - meaning that it is very visible (as a coloured pinprick) on dark scenes. Pixels rarely fail in use, but can be DOA and some manufacturers are awkward about replacing. LCD tend to be expensive at large sizes. Some LCDs have a slow response time (speed at which a pxel can change colour) which means that fast moving objects blur. Again - varies hugely from model to model.

    Plasma Pro: Viewing angle less likely to be restricted. Contrast/black levels likely to be better. Cheaper than LCD at large sizes. If a pixel fails, it will likely fail dark - visible on light scenes, but much less so than an LCD failed bright. But more likely to fail in use. Fast response time.

    Plasma Con: Some show refresh flicker. Screen burn is an issue. Some have cooling fans that make a noise. Structure may be more visible (lower fill ratio).

    As with all things - the whole story is a composite of many factors including, as I say, the standard of the supporting circuitry as well as the screen itself. Plus, your own personal preferences. I like LCDs, but that is only my opinion. I can cope with the greyness of black, in preference to the more visible grid structure of plasma and their (on some models) flickering. But you have to see for yourself to make a choice. Hopefully this will give you an idea of what to look for.
     
  3. Captain chaos

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    Thats great Nigel, cheers.

    Typically how many lines of resolution would a 22" LCD have?
     
  4. hornydragon

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    just compare a Sharp 30" or 37" LCD to the plasma equivalent then the difference is clear reflected light is minimal on Sharp SVS panels plasma is like a mirror bit £6k for a 37" is expensive!!!!!
     
  5. LV426

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    The pixel array in the Panachronic and Sharp Aquos 22 inchers is 848(w) x 480(h). This is NOT enough for the full resolution display of a PAL TV signal (which has 576 lines).

    The Samsung 22 incher is 1280 x 720.
     

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