The display resolution was 192 x 56 and included the PCB, backlight, holder, connectors and a scratch-resistant cover. One of the greatest challenges of the design was the color requirement. The customer was looking for a very specific blue for the characters on the LCD and originally thought of using a 470nm blue in order to get the right color. However, with a negative image display, the 470nm blue color is not bright enough to get the kind of contrast required for this premium application. Lumex suggested using white binned LEDs with specific X&Y coordinates for the backlight and finding the right filter to achieve the color requirements. Ultimately, Lumex was able to create the right blue character effect on the negative image DFSTN display.