Colour LCD

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

 

Hi Rune,
You could try modulating it to get shades of RGB. Just out of curiosity,
whats the pixel size?

 

Hello

Thanks for the idea.

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

Rune

 

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

 

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.

 

Just remember to keep the refresh rate above 25Hz or so. Otherwise the
flicker will be annoying.

 

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