I digged one of my my all-kinds-of-things boxes and found a display with SM16312 chip (or SMI6312). It's pretty similar to yours.
Unfortunately I couldn't find any other parts related to this display, so I don't know about the power supply or other things.
The board has total 10 wires, some labeled:
GND - ground
DATA - serial data (?)
D** (can't read, it's worn off)
LCK - serial clock (?)
RMOE - IR remote
+5V - voltage in
and 4 other wires without label, coming from a different place (two of them going straight to the display (the AC power or something?)).
It would be nice to use this display in something... Well, at least the board has a few buttons to use in other projects.