To custom the monochrome lcd display screen, what things we need to care about? we have to concern about what kinds of display mode that we need, and the display interface, connection way, and the viewing direction of monochrome display screen, because monochrome lcd display has the viewing angle limited, especially for monochrome TN lcd display, its viewing angle is narrow than the STN mode lcd screen. but monochrome lcd display have the advantage in custom make tooling fee and the unit cost. Monochrome lcd display means only one color display, so we can not change the display color when we use monochrome lcd display. but we could choose one of background that we need for monochrome lcd display, such as yellow-green, blue, or gray, white or black background that we prefer.