Almost all LCD text modules are based on the Hitachi chipset, if you do not usually record specific data. There are a few of my PIC tutorial, all you really need to know, there is also a link to the EPA where they have a useful complement LCD, you can download.
Thanks for your time and attntion but I wonder if you can guide me to the specific query regarding optical properties of
the specific LCD type mentioned by me in my post.What is epa? Any way I thank you for your kind attnetion