Reflector Parameters for High Reflectance and High Contrast Ratio with White-Taylor Reflective Display

We have calculated the appropriate reflector parameters for high white-state reflectivity. First, we studied the reflector with and without a refractive layer. With a refractive layer on the reflector, the appropriate average reflector slope is smaller than that without, because the incident light refracts at the air interface and the incident angle to the reflector is small. Next, we investigated the appropriate reflector for a White-Taylor display. We found that the optimum shape of the reflector for reflective display depends on the type of light source, i.e., a diffused light source or a point light source. The optimum average slope of the reflector (K) for the White-Taylor display is between 7° and 10°. With this value of K, we can achieve both high reflectivity and a high contrast ratio with both a diffused light source and a point light source.