well, google CMOS LXD DRIVER DATASHEET will find a lot of good info.
Otherwise you should spec which display.. Dot matrix, 4 Digit (like a DVM), 20 Character Serial ??
Consider using serial driven display modules, they are way simpler. **broken link removed**
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i am professional LCD engineer for some years and I have a lot of LCD Program and LCD datasheet. If any worldwide friends needed, I would like to email you as soon as possible. Pls. email me firstly. Thanks. My Email address is ken@e-shinedisplay.com.