Synthesis of tricyanopyrrolidone derivatives as synergists for improving contrast ratio of liquid crystal displays

The contrast ratio is an important color property of liquid crystal displays. Color properties are classified as colors' purity, contrast ratio, and brightness; these mainly depend on pigment properties. The contrast ratio in particular can be improved by minimizing the light scattering of pigment particles, which is directly related to their degree of dispersion. Therefore, synergists are usually employed to increase the contrast ratio by augmenting the dispersion efficiency. In this study, tricyanopyrrolidone derivatives as blue color synergists were synthesized and examined for their performance to improve the contrast ratio of liquid crystal displays. The results of this study prove that tricyanopyrrolidone derivatives as synergists for blue pigment effectively improve the contrast ratio.