Hi,
You might need to get one of these LCM 1602, some more details here
[
henrysbench.capnfatz.com]
I'm using one to drive a 20 x 4 char over I2C, it's not on printer but IoT project but I think it's what you need to drive LCD display with Ramps board.
Supporting 3D Printers with Parts and Build services.
Printer: Ormerod 2 (528.4) Duel extruder set-up with Aluminium X-Rib, RRPro Firmware v1.11-ch (2016-04-08)