the holes on the circuit are for fixing back-light (the circuit is the same for models with/without backlight), this one has no back-light.
Unfortunately, I have made some search, but not found any data-sheet for the LM2339SGR model.
The only thing I have found in this link : www.goldmine-elec.com/pdf/243_pgs1-49HALF.pdf
is that (not very usefull):
Solomon LCD Display Small PC board with 2 ICs is marked 010611CA,LM2339SGR 97-02400.
Size of PC board is 3.3'' x 1.74'' and the LCD size is 2.71''L x 1.18''Tall.
These are brand new with pro-tective film on LCD. Has female 15 pin connector
for hookup. We canít find data on this LCD so we are selling them cheap.
G15592 99Ę ea.