Improving the contrast ratio of red pixels in liquid-crystal displays by synthesizing synergists from an anthraquinone colorant

The color properties of liquid-crystal displays are usually classified on the basis of color representations, contrast ratios, and brightness, which primarily depend on the properties of pigments. Among these classifications, the contrast ratio can be improved by minimizing the light scattering of the pigment particles, which is directly related to the degree of dispersion. Therefore, synergists are usually applied to increase the contrast ratio by augmenting the efficiency of the dispersion. In this study, synergists containing anthraquinone as a backbone were synthesized and then their performance in improving the contrast ratio was examined.