SZAX (a LCD module reseller) was giving away some LCD screens (without documentation). So I got them at the price of shipping. And… here it is.
I bought these screens some while ago. The small one have integrated controller while the bigger one doesn’t. Both were sold for $1.5 each.
The integrated controller on the small one is UC1698U, which is a CSTN controller instead of a STN controller. This do cause some trouble, since every pixel in the controller map to three pixels on the screen.
Sorry for the image quality, I should have waited till morning to take the photo.
Read more if you want to see the reverse engineered pinouts and driver source code (possibly useless).