Hi,
I'm trying to design a controller for a Hitachi color STN display, but I'm running in to all kinds of problems here. I think most of it comes from the fact that I really don't know anything about how LCD displays work, so I was hoping someone in this group could enlighten me a little.
From what I've gathered from the displays datasheet, it seems the display is controlled by two different clock signals, one for vertical and one for horizontal lines. Once these clock signals are set correctly, it should just be a matter of clocking the pixel data in right?
There seems to be three bits for each color component, red, blue and green, and by my calculation this gives 8 different colors. However the display is listed as beeing able to show up to 65,000 different colors. How exactly is this possible?
I have thought about various dithering schemes, but i think most of them implies very dramatical losses in refresh speeds, resolution and image quality. What is the normal way of producing colors on a CSTN display?
Regards, Anders