Using LCD's of mobiles?
Google seems to be the best bet AFAIK. The modules vary wildly. There are types that resemble a TV with horizontal and vertical sync and pixels, ones with smart controllers (even SPI, as in a 3310 IIRC) and probably some had bare segments. Most probably don't have easily published specs.

Another thing you'll have to worry about is the connector types. Many cellphone parts have incredibly tight pitch components.