Hi..
it is generally written on back side of display.. in small fonts..
i have 16 pin LCD in which
1-vss
2-vcc
3-vee
4-RS
5-R/W
6-Enable
7-data0........14-data7
15-led+
16-led-
.
this is in most of lcd's... better if you post an image of lcd..
best of "WORK"..
regards.