Assuming you can work out the pin sharing.
(keeping the servo library ISR routines from mucking with the pin being used to control the LCD)
Keep in mind that a call to update the LCD using the stock LiquidCrystal library can take quite a while. i.e. 100's of microseconds per character being written. And if you do a clear() or home() that is 2ms for either of those.
So just writing a string of say 10 characters, will be several milliseconds.
That is a long time to block servo signals if you lock out the servo during the LCD update.
i2c LCD modules are less than $1 USD.
I2C modules are worth their price just for the included contrast pot, imo.
Thank you for the info
I managed to get it working, using the analog pins as digital ones for the display
Thanks all for the help ! ( I already have another question, but I can't delete this thread, should I create a new thread ? )