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Contrast ratio in LCD-TFT display

Discussion in 'Electronic Design' started by [email protected], Apr 12, 2009.

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  1. Guest

    Can i consider contrast ratio in LCD-TFT display, in approximated
    analysis, independent from forward current of led-backlight? I think
    yes, because it is the fraction of light that liquid crystal can
    block...or not?
    Thanks
     
  2. I would think so too.

    More importantly, it is only valid for viewing in total darkness - since
    the contrast ratio for TFTs is likely dominated by ambient light
    reflection.
     
  3. Guest

    Another question: if i want to compare white luminance of two display
    datasheet, due to different forward current used, how can i do it?I
    should know responsivity to calculate it (i think), but how can i
    obtain it?
    thanks
     
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