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Colour LCD

Discussion in 'General Electronics' started by Rune Christensen, May 27, 2005.

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  1. Hello

    I have bought a LM64C152 colour LCD screen. Is it possible to create more
    than 8 different colours on the screen?

    There is three different pixel colours Red, Green and Blue but each colour
    is on or off because there is only one bit per pixel.

    Thanks
    Rune Christensen
    M.Sc.E.E
     
  2. Hi Rune,
    You could try modulating it to get shades of RGB. Just out of curiosity,
    whats the pixel size?
     
  3. Hello

    Thanks for the idea.

    You can find the datasheet at
    http://www.devl.org/lcd/lm64c152.pdf

    Rune
     
  4. Hi Rune,
    Since this is a _passive_ matrix color LCD, using shades does not make
    much sense. The colors are not that clear and stable as on a TFT.
    ALso, colors heavily depend on the ambient temperature and on the
    viewing angle.

    HTH
    Wolfgang
     
  5. While this is all true, it is perhaps worth pointing out that it *is*
    common for LCD controllers to implement multiple colour "shades" by
    modulation of the pixels.
     
  6. Just remember to keep the refresh rate above 25Hz or so. Otherwise the
    flicker will be annoying.
     
  7. Rich Grise

    Rich Grise Guest

    PC displays dither the pixels. Consider your triads in groups
    of four, which you could call a "super-pixel". Then you could
    haven in effect 15 levels of each color (plus off, of course).
    (you could do it with 2x, 3x, or whatever).

    They've been doing that on PCs for years. :)

    Good Luck!
    Rich
     
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