One idea to correct this problem is the possibility of superimposing capacitive switches at any point within the pixel matrix, without affecting the quality of the display. Also, additional screen-printed information may be superimposed on another layer of glass. The rate is ideally 300 frames per second, but is adequate at 50 or 60. Common sizes for the displays currently on the market range from 3.6 inches diagonally to 10.4 inches diagonally. Viewing angles reach 160 degrees in the horizontal direction.
Power consumption varies widely.
The power necessary to drive the displays is directly related to the desired refresh rate. The power required ranges from about 2 to 27 W. Brightness ranges from 50 to 80 nits in the modules observed. The contrast ratio may seem a little low, but it will not wash out in ambient light as LCD displays tend to do. Contrast is stable across all viewing angles in EL Displays. EL technology lags behind liquid crystals in one significant area, it lacks full-color capability.