Your camera takes nice pictures but what is your question. My first suggestion is to install google so you can look up technical information on it. You need to read the instructions for your display. Next see if you can find some sample code. Load it up in your Arduino that is connected to the display as it should be. Check there may have been demonstration code with the display.
My question is if anyone has an idea of how it works, I have tried to make it work with the Liquid Crystal library, i2c connection and I have no result, but the strange thing is that it connects like a normal LCD. It has 16 pins.
"It has 16 pins." So do 16 Pin ICs. Post a link to technical information on the display. There is no such thing as a normal LCD, Most are custom. There is no standard for the pins that I know about.
You might need to read this...
http://www.kontest.ru/datasheet/AMPIRE/AG320240A.pdf