Actually,you gave no useful information to let us help you.
You should give a gross idea of your system.Such as what kind of processor you will use, DSP or MPU or FPGA?If you use MPU,it will support LCD display.If not,you should find LCD modules with built-in controller.……There are many questions in a system.What we know from your information is you need a voiceprint identification system and you have no idea about such a system.I suggest you give more information,so others will give some useful advice.
Added after 2 minutes:
By the way,if you just need an LCD module,you could find datasheet in the website of maufacturers.Such as TRULY,TOPWAY etc.You could find one that you need.