I would like to understand how can I determine the number of color of a STN screen.
For a TFT screen it is simple if I have 6R-6G-6B screen it is 262144 color, if it is 8R-8G-8B it is 16million colors. I just have to do the 2^n with n the number of bit.
But on STN there is usually 4 or 8 bits driven in the LCD. But if I understood well the functionment of this type of screen each bit is latch on 1 segment. Then with 8 bits you drive 8 segments so 2 and 2/3 pixel which for me mean that each segment can only be either on or off then you just have 8 color possible for a pixel. But I saw some description with STN of 4096 colors, how is that possible? I think I missed something in the operation mode of a STN screen.
Is it a mater of duty cycle? How do I determine a number of color for a STN screen?